/* ==========================================================================
   Telegram Mini App - Developer Tools
   Comprehensive CSS Framework
   ========================================================================== */

/* ==========================================================================
   1. CSS Custom Properties & Telegram Theme Integration
   ========================================================================== */

:root {
  /* Telegram Theme Variables with Fallbacks */
  --tg-theme-bg-color: var(--tg-theme-bg-color, #ffffff);
  --tg-theme-text-color: var(--tg-theme-text-color, #000000);
  --tg-theme-hint-color: var(--tg-theme-hint-color, #999999);
  --tg-theme-link-color: var(--tg-theme-link-color, #2481cc);
  --tg-theme-button-color: var(--tg-theme-button-color, #3390ec);
  --tg-theme-button-text-color: var(--tg-theme-button-text-color, #ffffff);
  --tg-theme-secondary-bg-color: var(--tg-theme-secondary-bg-color, #f4f4f5);
  --tg-theme-header-bg-color: var(--tg-theme-header-bg-color, #ffffff);
  --tg-theme-accent-text-color: var(--tg-theme-accent-text-color, #3390ec);
  --tg-theme-section-bg-color: var(--tg-theme-section-bg-color, #ffffff);
  --tg-theme-section-header-text-color: var(--tg-theme-section-header-text-color, #3390ec);
  --tg-theme-subtitle-text-color: var(--tg-theme-subtitle-text-color, #999999);
  --tg-theme-destructive-text-color: var(--tg-theme-destructive-text-color, #ff3b30);
  --tg-theme-bottom-bar-bg-color: var(--tg-theme-bottom-bar-bg-color, #ffffff);

  /* Safe Area Insets */
  --safe-area-top: env(safe-area-inset-top, 0px);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
  --safe-area-left: env(safe-area-inset-left, 0px);
  --safe-area-right: env(safe-area-inset-right, 0px);

  /* App-specific Variables */
  --header-height: 56px;
  --bottom-nav-height: 56px;
  --content-padding: 16px;
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 20px;
  --border-radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;

  /* Z-index layers */
  --z-content: 1;
  --z-sticky: 100;
  --z-header: 200;
  --z-bottom-nav: 200;
  --z-modal-backdrop: 300;
  --z-modal: 400;
  --z-toast: 500;
  --z-tooltip: 600;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', 'Consolas', monospace;
  --font-size-xs: 11px;
  --font-size-sm: 13px;
  --font-size-md: 15px;
  --font-size-lg: 17px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Status colors */
  --color-success: #34c759;
  --color-warning: #ff9500;
  --color-error: #ff3b30;
  --color-info: #007aff;

  /* Action colors */
  --color-test: #34c759;
  --color-build: #ff9500;
  --color-dev: #007aff;
  --color-install: #af52de;
  --color-lint: #5ac8fa;
  --color-format: #8e8e93;
}

/* Dark mode detection */
@media (prefers-color-scheme: dark) {
  :root {
    --tg-theme-bg-color: var(--tg-theme-bg-color, #212121);
    --tg-theme-text-color: var(--tg-theme-text-color, #ffffff);
    --tg-theme-hint-color: var(--tg-theme-hint-color, #aaaaaa);
    --tg-theme-link-color: var(--tg-theme-link-color, #6ab3f3);
    --tg-theme-button-color: var(--tg-theme-button-color, #3390ec);
    --tg-theme-button-text-color: var(--tg-theme-button-text-color, #ffffff);
    --tg-theme-secondary-bg-color: var(--tg-theme-secondary-bg-color, #181818);
    --tg-theme-header-bg-color: var(--tg-theme-header-bg-color, #212121);
    --tg-theme-section-bg-color: var(--tg-theme-section-bg-color, #212121);
    --tg-theme-bottom-bar-bg-color: var(--tg-theme-bottom-bar-bg-color, #212121);
  }
}

/* ==========================================================================
   2. Reset & Base Styles
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  color: var(--tg-theme-text-color);
  background-color: var(--tg-theme-bg-color);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Prevent pull-to-refresh on mobile */
body.no-pull-refresh {
  overscroll-behavior-y: contain;
}

a {
  color: var(--tg-theme-link-color);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

a:hover {
  opacity: 0.8;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: transparent;
  border: none;
  outline: none;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul,
ol {
  list-style: none;
}

/* ==========================================================================
   3. Typography Classes
   ========================================================================== */

.font-small {
  font-size: var(--font-size-sm) !important;
}

.font-medium {
  font-size: var(--font-size-md) !important;
}

.font-large {
  font-size: var(--font-size-lg) !important;
}

/* Body font size classes */
body.font-small { font-size: 14px; }
body.font-medium { font-size: 16px; }
body.font-large { font-size: 18px; }

.text-primary {
  color: var(--tg-theme-text-color);
}

.text-secondary {
  color: var(--tg-theme-subtitle-text-color);
}

.text-hint {
  color: var(--tg-theme-hint-color);
}

.text-accent {
  color: var(--tg-theme-accent-text-color);
}

.text-link {
  color: var(--tg-theme-link-color);
}

.text-destructive {
  color: var(--tg-theme-destructive-text-color);
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-mono {
  font-family: var(--font-mono);
}

.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.text-wrap {
  word-wrap: break-word;
  overflow-wrap: break-word;
}

/* ==========================================================================
   4. App Layout
   ========================================================================== */

#app,
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  max-width: 100vw;
  overflow-x: hidden;
  height: 100%;
  max-height: 100vh;
}

#main-content,
.app-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding-top: calc(var(--header-height) + var(--safe-area-top));
  padding-bottom: calc(var(--bottom-nav-height) + var(--safe-area-bottom));
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  position: relative;
}

/* Tab Content Panels */
.tab-content,
.tab-panel {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  flex-direction: column;
  opacity: 0;
  transform: translateX(20px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  animation: fadeIn 0.2s ease;
}

.tab-content.active,
.tab-panel.active {
  display: flex;
  opacity: 1;
  transform: translateX(0);
}

.tab-panel.slide-left {
  transform: translateX(-20px);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Scrollable content area */
.scrollable-content,
.scroll-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--content-padding);
  padding-left: calc(var(--content-padding) + var(--safe-area-left));
  padding-right: calc(var(--content-padding) + var(--safe-area-right));
  -webkit-overflow-scrolling: touch;
}

/* Tab Header */
.tab-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--content-padding);
  background: var(--tg-theme-secondary-bg-color);
  border-bottom: 1px solid rgba(128, 128, 128, 0.2);
  flex-shrink: 0;
}

.tab-header h2 {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

/* ==========================================================================
   5. Header
   ========================================================================== */

#header,
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  height: calc(var(--header-height) + var(--safe-area-top));
  padding-top: var(--safe-area-top);
  padding-left: var(--safe-area-left);
  padding-right: var(--safe-area-right);
  background-color: var(--tg-theme-header-bg-color);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(128, 128, 128, 0.1);
  transition: background-color 0.3s ease;
}

.header-content,
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--content-padding);
  max-width: 800px;
  margin: 0 auto;
}

.header-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  flex: 1;
  text-align: center;
}

#header h1 {
  font-size: 1.1em;
  font-weight: 600;
}

.header-left,
.header-right,
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 60px;
}

.header-right,
.header-actions {
  justify-content: flex-end;
}

/* Active Project Badge */
.active-project-badge {
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  padding: 4px 10px;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-xs);
  font-weight: 500;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.active-project-badge:empty {
  display: none;
}

/* Header Icon Button */
.icon-btn,
.header-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--border-radius-full);
  color: var(--tg-theme-text-color);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.icon-btn:hover,
.header-btn:hover {
  background-color: rgba(128, 128, 128, 0.1);
}

.icon-btn:active,
.header-btn:active {
  transform: scale(0.92);
}

.icon-btn.active {
  color: var(--tg-theme-button-color);
  background: rgba(36, 129, 204, 0.1);
}

.icon-btn svg,
.header-btn svg,
.header-btn img {
  width: 24px;
  height: 24px;
}

/* Status Indicator */
.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  color: var(--tg-theme-hint-color);
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--tg-theme-hint-color);
  transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.status-dot.online,
.status-dot.connected,
.status-indicator.connected {
  background-color: var(--color-success);
  box-shadow: 0 0 8px rgba(52, 199, 89, 0.5);
  animation: pulse 2s ease-in-out infinite;
}

.status-dot.offline,
.status-dot.disconnected,
.status-indicator.disconnected {
  background-color: var(--color-error);
}

.status-dot.busy {
  background-color: var(--color-warning);
  animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.1);
  }
}

/* ==========================================================================
   6. Bottom Navigation
   ========================================================================== */

#bottom-nav,
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-bottom-nav);
  height: calc(var(--bottom-nav-height) + var(--safe-area-bottom));
  padding-bottom: var(--safe-area-bottom);
  padding-left: var(--safe-area-left);
  padding-right: var(--safe-area-right);
  background-color: var(--tg-theme-bottom-bar-bg-color);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(128, 128, 128, 0.1);
  display: flex;
  justify-content: space-around;
  align-items: center;
}

.bottom-nav-inner {
  display: flex;
  align-items: stretch;
  justify-content: space-around;
  height: var(--bottom-nav-height);
  width: 100%;
}

.nav-btn,
.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 4px;
  padding: 8px 12px;
  max-width: 80px;
  color: var(--tg-theme-hint-color);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast), transform var(--transition-fast);
  position: relative;
}

.nav-btn:active,
.nav-item:active {
  transform: scale(0.92);
}

.nav-btn.active,
.nav-item.active {
  color: var(--tg-theme-accent-text-color);
}

.nav-btn svg,
.nav-item svg,
.nav-item img {
  width: 24px;
  height: 24px;
  transition: transform var(--transition-fast);
}

.nav-btn.active svg,
.nav-item.active svg,
.nav-item.active img {
  transform: scale(1.1);
  stroke-width: 2.5;
}

.nav-btn span,
.nav-item-label {
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: 1;
}

/* Navigation Badge */
.nav-badge {
  position: absolute;
  top: 2px;
  right: 50%;
  transform: translateX(12px);
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  background-color: var(--tg-theme-destructive-text-color);
  color: #ffffff;
  font-size: 11px;
  font-weight: 600;
  line-height: 18px;
  text-align: center;
  border-radius: var(--border-radius-full);
  animation: badge-pop 0.3s ease;
}

.nav-badge.dot {
  min-width: 8px;
  width: 8px;
  height: 8px;
  padding: 0;
  top: 6px;
  transform: translateX(8px);
}

@keyframes badge-pop {
  0% {
    transform: translateX(12px) scale(0);
  }
  50% {
    transform: translateX(12px) scale(1.2);
  }
  100% {
    transform: translateX(12px) scale(1);
  }
}

/* ==========================================================================
   7. Chat Tab
   ========================================================================== */

#tab-chat {
  display: flex;
  flex-direction: column;
}

#tab-chat.active {
  display: flex;
}

.chat-container,
#chat-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  height: 100%;
  overflow-y: auto;
  padding: var(--content-padding);
}

.chat-messages,
#messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--content-padding);
  padding-left: calc(var(--content-padding) + var(--safe-area-left));
  padding-right: calc(var(--content-padding) + var(--safe-area-right));
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
}

/* Message Bubble */
.message {
  display: flex;
  flex-direction: column;
  max-width: 85%;
  padding: 10px 14px;
  border-radius: var(--border-radius-lg);
  word-wrap: break-word;
  overflow-wrap: break-word;
  line-height: var(--line-height-normal);
  position: relative;
  animation: message-in 0.3s ease;
}

@keyframes message-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message.user {
  align-self: flex-end;
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  border-bottom-right-radius: 4px;
}

.message.bot {
  align-self: flex-start;
  background-color: var(--tg-theme-secondary-bg-color);
  color: var(--tg-theme-text-color);
  border-bottom-left-radius: 4px;
}

.message.error {
  background: rgba(255, 59, 48, 0.1);
  color: var(--color-error);
  border-left: 3px solid var(--color-error);
}

.message-time {
  font-size: var(--font-size-xs);
  color: var(--tg-theme-hint-color);
  margin-top: 4px;
  opacity: 0.7;
}

.message.user .message-time {
  text-align: right;
}

/* Code Block in Messages */
.message pre,
.message-bubble pre {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  margin: 8px 0;
  padding: 12px;
  background-color: #1e1e1e;
  color: #d4d4d4;
  border-radius: var(--border-radius-md);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.message code,
.message-bubble code {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  background-color: rgba(128, 128, 128, 0.15);
  padding: 2px 6px;
  border-radius: 4px;
}

.message pre code,
.message-bubble pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* Syntax Highlighting */
.code-keyword { color: #569cd6; }
.code-string { color: #ce9178; }
.code-number { color: #b5cea8; }
.code-comment { color: #6a9955; }
.code-function { color: #dcdcaa; }
.code-variable { color: #9cdcfe; }
.code-operator { color: #d4d4d4; }
.code-class { color: #4ec9b0; }

/* Typing Indicator */
#typing-indicator,
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background-color: var(--tg-theme-secondary-bg-color);
  border-radius: var(--border-radius-lg);
  border-bottom-left-radius: 4px;
  width: fit-content;
  margin: var(--content-padding) auto var(--content-padding) 0;
  max-width: 800px;
}

#typing-indicator.hidden {
  display: none;
}

#typing-indicator span,
.typing-dot {
  width: 8px;
  height: 8px;
  background-color: var(--tg-theme-hint-color);
  border-radius: 50%;
  animation: typing-bounce 1.4s ease-in-out infinite;
}

#typing-indicator span:nth-child(1),
.typing-dot:nth-child(1) { animation-delay: -0.32s; }
#typing-indicator span:nth-child(2),
.typing-dot:nth-child(2) { animation-delay: -0.16s; }
#typing-indicator span:nth-child(3),
.typing-dot:nth-child(3) { animation-delay: 0s; }

@keyframes typing-bounce {
  0%, 80%, 100% {
    transform: scale(0);
  }
  40% {
    transform: scale(1);
  }
}

/* Chat Input Area */
#input-area,
.chat-input-container {
  padding: 12px var(--content-padding);
  padding-left: calc(var(--content-padding) + var(--safe-area-left));
  padding-right: calc(var(--content-padding) + var(--safe-area-right));
  background-color: var(--tg-theme-secondary-bg-color);
  border-top: 1px solid rgba(128, 128, 128, 0.1);
  flex-shrink: 0;
}

.input-container,
.chat-input-wrapper {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--tg-theme-bg-color);
  border-radius: var(--border-radius-xl);
  padding: 8px 8px 8px 16px;
}

#message-input,
.chat-input {
  flex: 1;
  min-height: 24px;
  max-height: 120px;
  padding: 12px 16px;
  resize: none;
  background: transparent;
  border: none;
  border-radius: 20px;
  outline: none;
  color: var(--tg-theme-text-color);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  font-family: inherit;
  transition: background-color 0.3s ease;
}

#message-input::placeholder,
.chat-input::placeholder {
  color: var(--tg-theme-hint-color);
}

.send-btn,
.chat-send-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.send-btn:hover,
.chat-send-btn:hover {
  transform: scale(1.05);
}

.send-btn:active,
.chat-send-btn:active {
  transform: scale(0.95);
}

.send-btn:disabled,
.chat-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.send-btn svg,
.chat-send-btn svg {
  width: 20px;
  height: 20px;
}

/* ==========================================================================
   8. Projects Tab
   ========================================================================== */

.projects-container,
#projects-list {
  display: flex;
  flex-direction: column;
  gap: var(--content-padding);
  padding: var(--content-padding);
}

/* Project Card */
.project-card {
  background-color: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-lg);
  padding: 16px;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  border: 2px solid transparent;
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.project-card:active {
  transform: scale(0.98);
}

.project-card.active {
  border-color: var(--tg-theme-accent-text-color);
  box-shadow: 0 0 0 3px rgba(51, 144, 236, 0.2);
}

.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.project-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-md);
  background-color: var(--tg-theme-secondary-bg-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tg-theme-accent-text-color);
}

.project-icon svg {
  width: 24px;
  height: 24px;
}

.project-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: var(--font-size-sm);
  color: var(--tg-theme-hint-color);
}

.project-info-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.project-info-item svg {
  width: 14px;
  height: 14px;
}

.project-name {
  font-weight: 600;
  font-size: var(--font-size-md);
  margin-bottom: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-path {
  font-size: var(--font-size-sm);
  color: var(--tg-theme-subtitle-text-color);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-type {
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.project-status {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-sm);
  color: var(--tg-theme-hint-color);
}

.project-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.project-status-dot.synced {
  background-color: var(--color-success);
}

.project-status-dot.unsynced {
  background-color: var(--color-warning);
}

.project-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(128, 128, 128, 0.2);
}

.project-action-btn {
  flex: 1;
  padding: 8px;
  border: none;
  border-radius: var(--border-radius-sm);
  background: rgba(128, 128, 128, 0.1);
  color: var(--tg-theme-text-color);
  font-size: var(--font-size-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: background var(--transition-fast);
}

.project-action-btn:hover {
  background: rgba(128, 128, 128, 0.2);
}

.project-action-btn svg {
  width: 14px;
  height: 14px;
}

/* File Browser */
.file-browser {
  background-color: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  animation: slideInRight 0.2s ease;
}

.file-browser.hidden {
  display: none;
}

@keyframes slideInRight {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

.file-browser-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(128, 128, 128, 0.1);
  background-color: var(--tg-theme-secondary-bg-color);
}

#file-browser-path {
  flex: 1;
  font-size: var(--font-size-sm);
  font-family: var(--font-mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Breadcrumb Navigation */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-sm);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.breadcrumb::-webkit-scrollbar {
  display: none;
}

.breadcrumb-item {
  color: var(--tg-theme-link-color);
  white-space: nowrap;
  padding: 4px 8px;
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-fast);
}

.breadcrumb-item:hover {
  background-color: rgba(128, 128, 128, 0.1);
}

.breadcrumb-item.current {
  color: var(--tg-theme-text-color);
  font-weight: 500;
}

.breadcrumb-separator {
  color: var(--tg-theme-hint-color);
}

/* File Tree */
.file-tree,
.file-list {
  padding: 8px 0;
  flex: 1;
  overflow-y: auto;
}

.file-tree-item,
.file-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.file-tree-item:hover,
.file-item:hover {
  background-color: rgba(128, 128, 128, 0.05);
}

.file-tree-item:active,
.file-item:active {
  background-color: rgba(128, 128, 128, 0.1);
}

.file-tree-item.selected {
  background-color: rgba(51, 144, 236, 0.1);
}

.file-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tg-theme-hint-color);
}

.file-icon.folder {
  color: #f9a825;
}

.file-icon.file-js { color: #f7df1e; }
.file-icon.file-ts { color: #3178c6; }
.file-icon.file-py { color: #3776ab; }
.file-icon.file-json { color: #5b5b5b; }
.file-icon.file-md { color: #083fa1; }
.file-icon.file-html { color: #e34f26; }
.file-icon.file-css { color: #1572b6; }

.file-tree-item svg,
.file-item svg {
  width: 18px;
  height: 18px;
}

.file-name {
  flex: 1;
  font-size: var(--font-size-md);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-meta,
.file-size {
  font-size: var(--font-size-xs);
  color: var(--tg-theme-hint-color);
}

/* Indentation for nested items */
.file-tree-item[data-depth="1"] { padding-left: 32px; }
.file-tree-item[data-depth="2"] { padding-left: 48px; }
.file-tree-item[data-depth="3"] { padding-left: 64px; }
.file-tree-item[data-depth="4"] { padding-left: 80px; }

/* ==========================================================================
   9. Git Tab
   ========================================================================== */

.git-container {
  padding: var(--content-padding);
}

.git-section {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(128, 128, 128, 0.2);
}

.git-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.git-section h3 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  color: var(--tg-theme-hint-color);
  margin-bottom: 12px;
}

/* Branch Info */
.git-branch-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px;
  background: var(--tg-theme-secondary-bg-color);
  border-radius: var(--border-radius-sm);
  margin-bottom: 12px;
}

.git-branch-info svg {
  color: var(--tg-theme-button-color);
}

#current-branch {
  font-weight: 600;
  font-family: var(--font-mono);
}

/* Branch Selector */
.branch-selector,
.branch-selector-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 12px 16px;
  background-color: var(--tg-theme-section-bg-color);
  border: 1px solid rgba(128, 128, 128, 0.3);
  border-radius: var(--border-radius-md);
  color: var(--tg-theme-text-color);
  font-size: var(--font-size-md);
  transition: background-color var(--transition-fast);
  position: relative;
  margin-bottom: 16px;
}

.branch-selector-btn:hover {
  background-color: var(--tg-theme-secondary-bg-color);
}

.branch-icon {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--tg-theme-accent-text-color);
}

.branch-icon svg {
  width: 18px;
  height: 18px;
}

.branch-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
  background-color: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 10;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.branch-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.branch-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  width: 100%;
  text-align: left;
  transition: background-color var(--transition-fast);
}

.branch-option:hover {
  background-color: rgba(128, 128, 128, 0.1);
}

.branch-option.selected {
  background-color: rgba(128, 128, 128, 0.15);
  color: var(--tg-theme-accent-text-color);
}

/* File Status List */
.git-files,
.git-status {
  background-color: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  margin-bottom: 16px;
  padding: 12px;
  max-height: 200px;
  overflow-y: auto;
}

.git-files-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background-color: var(--tg-theme-secondary-bg-color);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.git-file-item,
.git-file {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(128, 128, 128, 0.1);
  font-size: var(--font-size-sm);
  font-family: var(--font-mono);
}

.git-file-item:last-child,
.git-file:last-child {
  border-bottom: none;
}

.git-file-checkbox {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  border: 2px solid var(--tg-theme-hint-color);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.git-file-checkbox.checked {
  background-color: var(--tg-theme-button-color);
  border-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

.git-file-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* File Status Badges */
.git-status-badge,
.git-file-status {
  padding: 2px 8px;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.git-status-badge.modified,
.git-file-status.modified {
  background-color: rgba(255, 149, 0, 0.15);
  color: var(--color-warning);
}

.git-status-badge.added,
.git-file-status.added {
  background-color: rgba(52, 199, 89, 0.15);
  color: var(--color-success);
}

.git-status-badge.deleted,
.git-file-status.deleted {
  background-color: rgba(255, 59, 48, 0.15);
  color: var(--color-error);
}

.git-status-badge.renamed {
  background-color: rgba(88, 86, 214, 0.15);
  color: #5856d6;
}

.git-status-badge.untracked,
.git-file-status.untracked {
  background-color: rgba(128, 128, 128, 0.15);
  color: var(--tg-theme-hint-color);
}

/* Commit Message */
.commit-section,
.commit-form {
  background-color: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-lg);
  padding: 16px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.commit-section-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--tg-theme-section-header-text-color);
  margin-bottom: 12px;
}

.commit-textarea,
#commit-message {
  width: 100%;
  min-height: 80px;
  padding: 12px;
  background-color: var(--tg-theme-secondary-bg-color);
  border: 1px solid rgba(128, 128, 128, 0.2);
  border-radius: var(--border-radius-md);
  color: var(--tg-theme-text-color);
  font-size: var(--font-size-md);
  font-family: inherit;
  resize: vertical;
  transition: border-color var(--transition-fast);
}

.commit-textarea:focus,
#commit-message:focus {
  border-color: var(--tg-theme-accent-text-color);
}

.commit-textarea::placeholder,
#commit-message::placeholder {
  color: var(--tg-theme-hint-color);
}

/* Git Actions */
.git-actions,
.git-sync-actions {
  display: flex;
  gap: 8px;
}

.git-sync-actions .action-btn {
  flex: 1;
}

/* Button Group */
.btn-group {
  display: flex;
  gap: 8px;
}

.btn-group.full-width .btn {
  flex: 1;
}

/* Diff Viewer */
.diff-viewer {
  background-color: #1e1e1e;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

.diff-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background-color: #252526;
  color: #cccccc;
  border-bottom: 1px solid #3c3c3c;
}

.diff-content {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.diff-line {
  display: flex;
  padding: 0 16px;
  line-height: 1.6;
  white-space: pre;
}

.diff-line-number {
  width: 40px;
  color: #858585;
  text-align: right;
  padding-right: 16px;
  user-select: none;
  flex-shrink: 0;
}

.diff-line-content {
  flex: 1;
  color: #d4d4d4;
}

.diff-line.added {
  background-color: rgba(52, 199, 89, 0.15);
}

.diff-line.added .diff-line-content {
  color: var(--color-success);
}

.diff-line.deleted {
  background-color: rgba(255, 59, 48, 0.15);
}

.diff-line.deleted .diff-line-content {
  color: var(--color-error);
}

.diff-line.context {
  background-color: transparent;
}

/* ==========================================================================
   10. Actions Tab
   ========================================================================== */

.actions-container {
  padding: var(--content-padding);
}

/* Button Grid */
.actions-grid,
.action-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

@media (min-width: 480px) {
  .actions-grid,
  .action-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) {
  .actions-grid,
  .action-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.action-card,
.action-btn-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 8px;
  background-color: var(--tg-theme-section-bg-color);
  border: none;
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.action-card:hover,
.action-btn-card:hover {
  background-color: var(--tg-theme-secondary-bg-color);
  box-shadow: var(--shadow-md);
}

.action-card:active,
.action-btn-card:active {
  transform: scale(0.95);
}

.action-card.running {
  box-shadow: 0 0 0 2px var(--tg-theme-button-color);
}

.action-icon,
.action-btn-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.action-icon.test { background: var(--color-test); }
.action-icon.build { background: var(--color-build); }
.action-icon.dev { background: var(--color-dev); }
.action-icon.install { background: var(--color-install); }
.action-icon.lint { background: var(--color-lint); }
.action-icon.format { background: var(--color-format); }

.action-btn-icon svg {
  width: 24px;
  height: 24px;
}

.action-card span,
.action-btn-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--tg-theme-text-color);
  text-align: center;
}

/* Command Input */
.custom-command-section,
.command-input-section {
  margin-bottom: 20px;
}

.custom-command-section h3,
.recent-commands-section h3 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  color: var(--tg-theme-hint-color);
  margin-bottom: 12px;
}

.custom-command-input,
.command-input-wrapper {
  display: flex;
  gap: 8px;
  background-color: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-lg);
  padding: 8px;
}

.custom-command-input input,
.command-input {
  flex: 1;
  padding: 12px 16px;
  background-color: var(--tg-theme-secondary-bg-color);
  border: 1px solid rgba(128, 128, 128, 0.3);
  border-radius: var(--border-radius-md);
  color: var(--tg-theme-text-color);
  font-family: var(--font-mono);
  font-size: var(--font-size-md);
}

.command-input::placeholder {
  color: var(--tg-theme-hint-color);
}

.command-run-btn {
  padding: 12px 20px;
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.command-run-btn:hover {
  opacity: 0.9;
}

.command-run-btn:active {
  transform: scale(0.95);
}

/* Recent Commands */
.recent-commands-section {
  margin-bottom: 20px;
}

.recent-commands-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.recent-command {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--tg-theme-secondary-bg-color);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.recent-command:hover {
  background: rgba(128, 128, 128, 0.2);
}

.recent-command-text {
  flex: 1;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.recent-command-time {
  font-size: var(--font-size-xs);
  color: var(--tg-theme-hint-color);
}

/* Log Viewer */
.log-viewer,
.logs-container {
  background-color: #0d1117;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: #d4d4d4;
}

.log-header,
.logs-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background-color: #161b22;
  border-bottom: 1px solid #30363d;
}

.log-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #c9d1d9;
}

.log-filter {
  padding: 6px 10px;
  border: 1px solid rgba(128, 128, 128, 0.3);
  border-radius: 6px;
  background: var(--tg-theme-bg-color);
  color: var(--tg-theme-text-color);
  font-size: var(--font-size-sm);
}

.log-actions {
  display: flex;
  gap: 8px;
}

.log-action-btn {
  padding: 4px 8px;
  font-size: var(--font-size-xs);
  color: #8b949e;
  transition: color var(--transition-fast);
}

.log-action-btn:hover {
  color: #c9d1d9;
}

.log-content {
  padding: 16px;
  max-height: 300px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: #c9d1d9;
}

.log-entry,
.log-line {
  display: flex;
  gap: 12px;
  padding: 4px 8px;
  border-left: 3px solid transparent;
  margin-bottom: 2px;
  animation: fadeIn 0.2s ease;
}

.log-entry.info { border-left-color: var(--color-info); }
.log-entry.warning { border-left-color: var(--color-warning); color: var(--color-warning); }
.log-entry.error { border-left-color: var(--color-error); color: var(--color-error); }
.log-entry.success { border-left-color: var(--color-success); color: var(--color-success); }

.log-timestamp {
  color: #6e7681;
  flex-shrink: 0;
}

.log-message {
  flex: 1;
  word-break: break-all;
}

.log-message.info { color: #58a6ff; }
.log-message.success { color: #3fb950; }
.log-message.warning { color: #d29922; }
.log-message.error { color: #f85149; }

/* Process Status Indicators */
.process-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background-color: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-md);
  margin-bottom: 12px;
}

.process-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.process-indicator.running {
  background-color: var(--color-success);
  animation: pulse 1.5s ease-in-out infinite;
}

.process-indicator.stopped {
  background-color: var(--tg-theme-hint-color);
}

.process-indicator.error {
  background-color: var(--tg-theme-destructive-text-color);
}

.process-name {
  flex: 1;
  font-weight: 500;
}

.process-action {
  color: var(--tg-theme-link-color);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   11. Settings Tab
   ========================================================================== */

.settings-container {
  padding: var(--content-padding);
}

/* Settings Section */
.settings-section {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(128, 128, 128, 0.2);
}

.settings-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.settings-section h3,
.settings-section-header {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--tg-theme-section-header-text-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0 16px;
  margin-bottom: 12px;
}

.settings-group {
  background-color: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.setting-item,
.settings-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(128, 128, 128, 0.1);
}

.setting-item:last-child,
.settings-item:last-child {
  border-bottom: none;
}

.setting-item label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  cursor: pointer;
}

.settings-item-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
}

.settings-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  flex-shrink: 0;
}

.settings-icon svg {
  width: 18px;
  height: 18px;
}

.settings-icon.blue { background-color: rgba(0, 122, 255, 0.15); color: var(--color-info); }
.settings-icon.green { background-color: rgba(52, 199, 89, 0.15); color: var(--color-success); }
.settings-icon.orange { background-color: rgba(255, 149, 0, 0.15); color: var(--color-warning); }
.settings-icon.red { background-color: rgba(255, 59, 48, 0.15); color: var(--color-error); }
.settings-icon.purple { background-color: rgba(88, 86, 214, 0.15); color: #5856d6; }
.settings-icon.gray { background-color: rgba(128, 128, 128, 0.15); color: var(--tg-theme-hint-color); }

.settings-item-info {
  flex: 1;
  min-width: 0;
}

.settings-item-title {
  font-size: var(--font-size-md);
  margin-bottom: 2px;
}

.settings-item-subtitle {
  font-size: var(--font-size-sm);
  color: var(--tg-theme-subtitle-text-color);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.settings-item-value {
  font-size: var(--font-size-md);
  color: var(--tg-theme-hint-color);
}

.settings-item-arrow {
  color: var(--tg-theme-hint-color);
  margin-left: 8px;
}

.setting-item select,
.setting-item input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid rgba(128, 128, 128, 0.3);
  border-radius: var(--border-radius-sm);
  background: var(--tg-theme-secondary-bg-color);
  color: var(--tg-theme-text-color);
  font-size: 1em;
  margin-top: 6px;
}

.setting-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--tg-theme-button-color);
}

/* Status Items */
.status-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(128, 128, 128, 0.1);
}

.status-item:last-child {
  border-bottom: none;
}

.status-label {
  font-weight: 500;
}

.status-value {
  color: var(--tg-theme-hint-color);
}

.status-value.online {
  color: var(--color-success);
}

.status-value.offline {
  color: var(--color-error);
}

/* Toggle Switch (iOS Style) */
.toggle-switch {
  position: relative;
  width: 51px;
  height: 31px;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(128, 128, 128, 0.3);
  border-radius: 31px;
  transition: background-color var(--transition-normal);
}

.toggle-slider::before {
  position: absolute;
  content: "";
  height: 27px;
  width: 27px;
  left: 2px;
  bottom: 2px;
  background-color: #ffffff;
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: transform var(--transition-normal);
}

.toggle-switch input:checked + .toggle-slider {
  background-color: var(--color-success);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(20px);
}

.toggle-switch input:focus + .toggle-slider {
  box-shadow: 0 0 0 2px rgba(52, 199, 89, 0.3);
}

/* Slider */
.range-slider {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(128, 128, 128, 0.3);
  border-radius: 2px;
  outline: none;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

.range-slider::-webkit-slider-thumb:active {
  transform: scale(0.95);
}

.range-slider::-moz-range-thumb {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  border: none;
}

.slider-container {
  padding: 16px;
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: var(--font-size-xs);
  color: var(--tg-theme-hint-color);
}

/* ==========================================================================
   12. Buttons
   ========================================================================== */

.btn,
.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: var(--font-size-md);
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: transform var(--transition-fast), opacity var(--transition-fast), background-color var(--transition-fast);
  user-select: none;
  white-space: nowrap;
}

.btn:disabled,
.action-btn:disabled {
  opacity: 0.5;
  pointer-events: none;
  cursor: not-allowed;
}

.btn:hover,
.action-btn:hover {
  opacity: 0.9;
}

.btn:active:not(:disabled),
.action-btn:active {
  transform: scale(0.96);
}

/* Primary Button */
.btn-primary,
.action-btn.primary {
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

/* Secondary Button */
.btn-secondary,
.action-btn.secondary {
  background-color: var(--tg-theme-secondary-bg-color);
  color: var(--tg-theme-text-color);
}

.btn-secondary:hover:not(:disabled),
.action-btn.secondary:hover {
  background-color: rgba(128, 128, 128, 0.2);
}

/* Destructive Button */
.btn-destructive,
.action-btn.danger {
  background-color: rgba(255, 59, 48, 0.15);
  color: var(--tg-theme-destructive-text-color);
}

.btn-destructive:hover:not(:disabled),
.action-btn.danger:hover {
  background-color: rgba(255, 59, 48, 0.25);
}

/* Success Button */
.action-btn.success {
  background: var(--color-success);
  color: white;
}

/* Outline Button */
.btn-outline {
  background-color: transparent;
  border: 2px solid var(--tg-theme-button-color);
  color: var(--tg-theme-button-color);
}

.btn-outline:hover:not(:disabled) {
  background-color: rgba(51, 144, 236, 0.1);
}

/* Ghost Button */
.btn-ghost {
  background-color: transparent;
  color: var(--tg-theme-link-color);
}

.btn-ghost:hover:not(:disabled) {
  background-color: rgba(128, 128, 128, 0.1);
}

/* Button Sizes */
.btn-sm {
  padding: 8px 14px;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 16px 28px;
  font-size: var(--font-size-lg);
}

.btn-block {
  display: flex;
  width: 100%;
}

/* Icon Button */
.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
}

.btn-icon svg {
  width: 20px;
  height: 20px;
}

/* Loading Button */
.action-btn.loading,
.btn.loading {
  pointer-events: none;
  opacity: 0.7;
}

.action-btn.loading::after,
.btn.loading::after {
  content: '';
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: 8px;
}

/* ==========================================================================
   13. Modals
   ========================================================================== */

.modal,
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
  animation: fadeIn 0.2s ease;
}

.modal.hidden {
  display: none;
}

.modal-backdrop.open,
.modal:not(.hidden) {
  opacity: 1;
  visibility: visible;
}

.modal-content,
.modal-panel {
  position: relative;
  z-index: var(--z-modal);
  background-color: var(--tg-theme-bg-color);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
  width: 90%;
  max-width: 400px;
  max-height: 80vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
}

.modal:not(.hidden) .modal-content {
  opacity: 1;
  visibility: visible;
}

/* Centered Modal (Desktop) */
.modal.centered .modal-content {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
}

.modal.centered.open .modal-content {
  transform: translate(-50%, -50%) scale(1);
}

/* Slide-up Modal (Mobile) */
.modal.slide-up .modal-content {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  max-width: 100%;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  transform: translateY(100%);
  max-height: 85vh;
  max-height: 85dvh;
  padding-bottom: var(--safe-area-bottom);
}

.modal.slide-up.open .modal-content {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(128, 128, 128, 0.1);
  position: sticky;
  top: 0;
  background: inherit;
}

.modal-header h2,
.modal-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--tg-theme-secondary-bg-color);
  color: var(--tg-theme-hint-color);
  transition: background-color var(--transition-fast);
}

.modal-close:hover {
  background-color: rgba(128, 128, 128, 0.2);
}

.modal-close svg {
  width: 16px;
  height: 16px;
}

.modal-body,
.modal-content-inner {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.modal-footer {
  display: flex;
  gap: 12px;
  padding: 16px 20px;
  border-top: 1px solid rgba(128, 128, 128, 0.1);
}

.modal-footer .btn {
  flex: 1;
}

/* Modal Handle (for slide-up modals) */
.modal-handle {
  display: none;
  width: 36px;
  height: 4px;
  background-color: rgba(128, 128, 128, 0.3);
  border-radius: 2px;
  margin: 8px auto;
}

.modal.slide-up .modal-handle {
  display: block;
}

/* ==========================================================================
   14. Toast Notifications
   ========================================================================== */

#toast-container,
.toast-container {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + var(--safe-area-bottom) + 16px);
  left: 50%;
  transform: translateX(-50%);
  left: var(--content-padding);
  right: var(--content-padding);
  left: calc(var(--content-padding) + var(--safe-area-left));
  right: calc(var(--content-padding) + var(--safe-area-right));
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 90%;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background-color: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  opacity: 0;
  transform: translateY(20px);
  animation: toast-in 0.3s ease forwards;
}

.toast.hiding {
  animation: toast-out 0.3s ease forwards;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes toast-out {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-20px);
  }
}

.toast-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
}

.toast-icon svg {
  width: 16px;
  height: 16px;
}

.toast.success,
.toast.success .toast-icon {
  background-color: var(--color-success);
  color: white;
}

.toast.error,
.toast.error .toast-icon {
  background-color: var(--color-error);
  color: white;
}

.toast.warning,
.toast.warning .toast-icon {
  background-color: var(--color-warning);
  color: white;
}

.toast.info .toast-icon {
  background-color: rgba(0, 122, 255, 0.15);
  color: var(--color-info);
}

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-title {
  font-weight: 600;
  font-size: var(--font-size-md);
  margin-bottom: 2px;
}

.toast-message {
  font-size: var(--font-size-sm);
  color: var(--tg-theme-subtitle-text-color);
}

.toast-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: var(--tg-theme-hint-color);
  flex-shrink: 0;
  transition: background-color var(--transition-fast);
}

.toast-close:hover {
  background-color: rgba(128, 128, 128, 0.1);
}

.toast-close svg {
  width: 14px;
  height: 14px;
}

/* ==========================================================================
   15. Loading States
   ========================================================================== */

/* Spinner */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(128, 128, 128, 0.2);
  border-top-color: var(--tg-theme-button-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto;
}

.spinner.sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

.spinner.lg,
.spinner.large {
  width: 48px;
  height: 48px;
  border-width: 4px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
}

.loading-overlay.hidden {
  display: none;
}

.loading-content {
  text-align: center;
  color: white;
}

.loading-content p {
  margin-top: 16px;
  font-size: var(--font-size-md);
}

/* Loading State */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--tg-theme-hint-color);
}

.loading-state p {
  margin-top: 12px;
}

/* Skeleton Screens */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--tg-theme-secondary-bg-color) 25%,
    rgba(128, 128, 128, 0.1) 50%,
    var(--tg-theme-secondary-bg-color) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
  border-radius: var(--border-radius-sm);
}

@keyframes skeleton-shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton-text {
  height: 14px;
  margin-bottom: 8px;
}

.skeleton-text.short {
  width: 40%;
}

.skeleton-text.medium {
  width: 70%;
}

.skeleton-text.long {
  width: 90%;
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.skeleton-card {
  height: 80px;
  margin-bottom: 12px;
}

.skeleton-button {
  width: 100px;
  height: 44px;
}

/* Progress Bar */
.progress-bar {
  height: 4px;
  background-color: rgba(128, 128, 128, 0.2);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--tg-theme-button-color);
  border-radius: 2px;
  transition: width var(--transition-normal);
}

.progress-bar.indeterminate .progress-bar-fill {
  width: 30%;
  animation: progress-indeterminate 1.5s ease-in-out infinite;
}

@keyframes progress-indeterminate {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(400%);
  }
}

/* Pull to Refresh */
.pull-to-refresh {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 0;
  overflow: hidden;
  text-align: center;
  padding: 16px;
  color: var(--tg-theme-hint-color);
  transition: height var(--transition-normal), transform 0.2s;
}

.pull-to-refresh.active {
  height: 60px;
}

.pull-to-refresh.pulling {
  transform: translateY(20px);
}

.pull-to-refresh-icon {
  width: 24px;
  height: 24px;
  color: var(--tg-theme-hint-color);
  transition: transform var(--transition-normal);
}

.pull-to-refresh.active .pull-to-refresh-icon {
  animation: spin 0.8s linear infinite;
}

/* ==========================================================================
   16. Utility Classes
   ========================================================================== */

/* Display */
.hidden { display: none !important; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

/* Flexbox */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }
.flex-none { flex: none; }
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }

/* Gap */
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-5 { gap: 20px; }
.gap-6 { gap: 24px; }

/* Spacing */
.m-0 { margin: 0; }
.m-1 { margin: 4px; }
.m-2 { margin: 8px; }
.m-3 { margin: 12px; }
.m-4 { margin: 16px; }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mx-auto { margin-left: auto; margin-right: auto; }

.p-0 { padding: 0; }
.p-1 { padding: 4px; }
.p-2 { padding: 8px; }
.p-3 { padding: 12px; }
.p-4 { padding: 16px; }
.px-1 { padding-left: 4px; padding-right: 4px; }
.px-2 { padding-left: 8px; padding-right: 8px; }
.px-3 { padding-left: 12px; padding-right: 12px; }
.px-4 { padding-left: 16px; padding-right: 16px; }
.py-1 { padding-top: 4px; padding-bottom: 4px; }
.py-2 { padding-top: 8px; padding-bottom: 8px; }
.py-3 { padding-top: 12px; padding-bottom: 12px; }
.py-4 { padding-top: 16px; padding-bottom: 16px; }

/* Border Radius */
.rounded-sm { border-radius: var(--border-radius-sm); }
.rounded-md { border-radius: var(--border-radius-md); }
.rounded-lg { border-radius: var(--border-radius-lg); }
.rounded-xl { border-radius: var(--border-radius-xl); }
.rounded-full { border-radius: var(--border-radius-full); }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }
.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }

/* Width/Height */
.w-full { width: 100%; }
.h-full { height: 100%; }
.min-w-0 { min-width: 0; }
.min-h-0 { min-height: 0; }

/* Opacity */
.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-100 { opacity: 1; }

/* Cursor */
.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

/* User Select */
.select-none { user-select: none; }
.select-text { user-select: text; }

/* ==========================================================================
   17. Animations
   ========================================================================== */

/* Fade In/Out */
.fade-in {
  animation: fadeIn var(--transition-normal) ease forwards;
}

.fade-out {
  animation: fadeOut var(--transition-normal) ease forwards;
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* Slide Animations */
.slide-in-up {
  animation: slideInUp var(--transition-normal) ease forwards;
}

.slide-in-down {
  animation: slideInDown var(--transition-normal) ease forwards;
}

.slide-in-left {
  animation: slideInLeft var(--transition-normal) ease forwards;
}

.slide-in-right {
  animation: slideInRight var(--transition-normal) ease forwards;
}

@keyframes slideInUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes slideInDown {
  from { transform: translateY(-20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes slideInLeft {
  from { transform: translateX(-20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Scale */
.scale-in {
  animation: scaleIn var(--transition-normal) ease forwards;
}

@keyframes scaleIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* Bounce */
.bounce {
  animation: bounce 0.5s ease;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Shake */
.shake {
  animation: shake 0.5s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-5px); }
  40%, 80% { transform: translateX(5px); }
}

/* Haptic Feedback Visual Cue */
.haptic-tap {
  animation: hapticTap 0.15s ease;
}

@keyframes hapticTap {
  0% { transform: scale(1); }
  50% { transform: scale(0.97); }
  100% { transform: scale(1); }
}

/* Button Press Effect */
.btn-press {
  transition: transform var(--transition-fast);
}

.btn-press:active {
  transform: scale(0.95);
}

/* ==========================================================================
   18. Responsive Design
   ========================================================================== */

/* Small screens */
@media (max-width: 360px) {
  .actions-grid,
  .action-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-btn span {
    font-size: 0.6em;
  }

  .action-icon {
    width: 40px;
    height: 40px;
  }

  .action-card {
    padding: 12px 8px;
  }
}

/* Tablet */
@media (min-width: 768px) {
  :root {
    --content-padding: 24px;
    --header-height: 64px;
  }

  #main-content,
  .app-content {
    max-width: 720px;
    margin: 0 auto;
  }

  .message {
    max-width: 70%;
  }

  .modal.slide-up .modal-content {
    max-width: 500px;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    border-radius: var(--border-radius-xl);
  }

  .modal.slide-up.open .modal-content,
  .modal.slide-up:not(.hidden) .modal-content {
    transform: translateX(-50%) translateY(0);
  }

  .actions-grid,
  .action-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .git-sync-actions {
    max-width: 400px;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  :root {
    --content-padding: 32px;
  }

  #main-content,
  .app-content {
    max-width: 900px;
  }

  .project-card:hover {
    transform: translateY(-4px);
  }

  .action-btn:hover,
  .action-card:hover {
    transform: translateY(-2px);
  }

  /* Hover states for desktop */
  .nav-btn:hover,
  .nav-item:hover {
    color: var(--tg-theme-accent-text-color);
    background-color: rgba(128, 128, 128, 0.05);
  }

  .setting-item:hover,
  .settings-item:hover {
    background-color: rgba(128, 128, 128, 0.05);
  }

  .file-tree-item:hover,
  .file-item:hover {
    background-color: rgba(128, 128, 128, 0.08);
  }
}

/* Landscape Mode */
@media (orientation: landscape) and (max-height: 500px) {
  :root {
    --header-height: 48px;
    --bottom-nav-height: 48px;
  }

  .modal.slide-up .modal-content {
    max-height: 95vh;
    max-height: 95dvh;
  }

  .nav-btn span,
  .nav-item-label {
    display: none;
  }

  .nav-btn svg,
  .nav-item svg,
  .nav-item img {
    width: 28px;
    height: 28px;
  }
}

/* Large Desktop */
@media (min-width: 1440px) {
  #main-content,
  .app-content {
    max-width: 1100px;
  }
}

/* ==========================================================================
   19. Accessibility
   ========================================================================== */

/* Focus States */
*:focus {
  outline: none;
}

*:focus-visible {
  outline: 2px solid var(--tg-theme-accent-text-color);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--tg-theme-accent-text-color);
  outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
  }

  .btn,
  .action-btn {
    border: 2px solid currentColor;
  }

  .toggle-slider {
    border: 2px solid var(--tg-theme-text-color);
  }

  .setting-item,
  .settings-item,
  .git-file-item,
  .git-file,
  .file-tree-item,
  .file-item {
    border-bottom: 2px solid rgba(128, 128, 128, 0.3);
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .tab-content,
  .tab-panel {
    transition: none;
  }

  .spinner {
    animation: none;
    border-top-color: var(--tg-theme-button-color);
    opacity: 0.7;
  }

  .typing-dot,
  #typing-indicator span {
    animation: none;
  }

  .status-dot {
    animation: none;
  }

  .skeleton {
    animation: none;
    background: var(--tg-theme-secondary-bg-color);
  }

  .progress-bar.indeterminate .progress-bar-fill {
    animation: none;
    width: 50%;
  }
}

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  padding: 8px 16px;
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* ==========================================================================
   20. Print Styles
   ========================================================================== */

@media print {
  #header,
  .header,
  #bottom-nav,
  .bottom-nav,
  .modal-backdrop,
  .modal,
  #toast-container,
  .toast-container {
    display: none !important;
  }

  #main-content,
  .app-content {
    padding: 0;
  }

  body {
    background: white;
    color: black;
  }

  a {
    text-decoration: underline;
  }

  .message {
    border: 1px solid #ccc;
  }

  .btn,
  .action-btn {
    border: 1px solid currentColor;
  }
}

/* ==========================================================================
   21. Dark Mode Specific Overrides
   ========================================================================== */

@media (prefers-color-scheme: dark) {
  .diff-viewer {
    background-color: #0d1117;
  }

  .diff-header {
    background-color: #161b22;
    border-color: #30363d;
  }

  .log-viewer,
  .logs-container {
    background-color: #0d1117;
  }

  .log-header {
    background-color: #161b22;
    border-color: #30363d;
  }

  .message.user code {
    background-color: rgba(255, 255, 255, 0.15);
  }

  .toggle-slider::before {
    background-color: #ffffff;
  }

  .range-slider::-webkit-slider-thumb {
    background: #ffffff;
  }

  .range-slider::-moz-range-thumb {
    background: #ffffff;
  }
}

/* ==========================================================================
   22. iOS Specific Fixes
   ========================================================================== */

/* Prevent iOS zoom on input focus */
@supports (-webkit-touch-callout: none) {
  input[type="text"],
  input[type="email"],
  input[type="password"],
  input[type="number"],
  textarea,
  select {
    font-size: 16px;
  }
}

/* iOS bounce scroll fix */
.scrollable-content,
.scroll-content {
  -webkit-overflow-scrolling: touch;
}

/* iOS safe area handling for fixed elements */
@supports (padding: max(0px)) {
  #header,
  .header {
    padding-top: max(var(--safe-area-top), 0px);
    padding-left: max(var(--safe-area-left), 0px);
    padding-right: max(var(--safe-area-right), 0px);
  }

  #bottom-nav,
  .bottom-nav {
    padding-bottom: max(var(--safe-area-bottom), 0px);
    padding-left: max(var(--safe-area-left), 0px);
    padding-right: max(var(--safe-area-right), 0px);
    height: calc(var(--bottom-nav-height) + max(var(--safe-area-bottom), 0px));
  }

  #input-area {
    padding-bottom: calc(var(--content-padding) + max(var(--safe-area-bottom), 0px));
  }

  .modal.slide-up .modal-content {
    padding-bottom: max(var(--safe-area-bottom), 16px);
  }
}

/* ==========================================================================
   23. Component State Variants
   ========================================================================== */

/* Disabled State */
.disabled,
[disabled] {
  opacity: 0.5;
  pointer-events: none;
  cursor: not-allowed;
}

/* Loading State */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Error State */
.error {
  border-color: var(--tg-theme-destructive-text-color) !important;
}

.error-message {
  color: var(--tg-theme-destructive-text-color);
  font-size: var(--font-size-sm);
  margin-top: 4px;
}

/* Success State */
.success {
  border-color: var(--color-success) !important;
}

.success-message {
  color: var(--color-success);
  font-size: var(--font-size-sm);
  margin-top: 4px;
}

/* ==========================================================================
   24. Empty States
   ========================================================================== */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
  color: var(--tg-theme-hint-color);
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
  color: var(--tg-theme-hint-color);
  opacity: 0.5;
}

.empty-state-icon svg {
  width: 100%;
  height: 100%;
}

.empty-state-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 8px;
}

.empty-state-description {
  font-size: var(--font-size-md);
  color: var(--tg-theme-subtitle-text-color);
  margin-bottom: 24px;
  max-width: 280px;
}

/* ==========================================================================
   25. Badges
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 8px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--border-radius-full);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.badge-primary {
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

.badge-secondary {
  background-color: var(--tg-theme-secondary-bg-color);
  color: var(--tg-theme-text-color);
}

.badge-success {
  background-color: rgba(52, 199, 89, 0.15);
  color: var(--color-success);
}

.badge-warning {
  background-color: rgba(255, 149, 0, 0.15);
  color: var(--color-warning);
}

.badge-error {
  background-color: rgba(255, 59, 48, 0.15);
  color: var(--color-error);
}

.badge-info {
  background-color: rgba(0, 122, 255, 0.15);
  color: var(--color-info);
}

/* ==========================================================================
   26. Dividers
   ========================================================================== */

.divider {
  height: 1px;
  background-color: rgba(128, 128, 128, 0.15);
  margin: 16px 0;
}

.divider-vertical {
  width: 1px;
  height: 100%;
  background-color: rgba(128, 128, 128, 0.15);
  margin: 0 16px;
}

.divider-with-text {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 16px 0;
}

.divider-with-text::before,
.divider-with-text::after {
  content: "";
  flex: 1;
  height: 1px;
  background-color: rgba(128, 128, 128, 0.15);
}

.divider-text {
  font-size: var(--font-size-sm);
  color: var(--tg-theme-hint-color);
  white-space: nowrap;
}

/* ==========================================================================
   27. Chips/Tags
   ========================================================================== */

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background-color: var(--tg-theme-secondary-bg-color);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
  transition: background-color var(--transition-fast);
}

.chip:hover {
  background-color: rgba(128, 128, 128, 0.2);
}

.chip.selected {
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

.chip-icon {
  width: 16px;
  height: 16px;
}

.chip-remove {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin-left: 2px;
  margin-right: -4px;
  transition: background-color var(--transition-fast);
}

.chip-remove:hover {
  background-color: rgba(0, 0, 0, 0.1);
}

.chip-remove svg {
  width: 12px;
  height: 12px;
}

/* ==========================================================================
   28. Tooltips
   ========================================================================== */

.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  padding: 6px 10px;
  background-color: var(--tg-theme-text-color);
  color: var(--tg-theme-bg-color);
  font-size: var(--font-size-xs);
  border-radius: var(--border-radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  z-index: var(--z-tooltip);
}

.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
}

/* ==========================================================================
   29. Scrollbar Styling
   ========================================================================== */

/* Custom scrollbar for webkit browsers */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background-color: rgba(128, 128, 128, 0.3);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background-color: rgba(128, 128, 128, 0.5);
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(128, 128, 128, 0.3) transparent;
}

/* Hide scrollbar but keep functionality */
.scrollbar-hidden {
  scrollbar-width: none;
}

.scrollbar-hidden::-webkit-scrollbar {
  display: none;
}

/* ==========================================================================
   30. Form Elements
   ========================================================================== */

/* Input Field */
.input-field {
  width: 100%;
  padding: 12px 16px;
  background-color: var(--tg-theme-secondary-bg-color);
  border: 1px solid transparent;
  border-radius: var(--border-radius-md);
  color: var(--tg-theme-text-color);
  font-size: var(--font-size-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-field:focus {
  border-color: var(--tg-theme-accent-text-color);
  box-shadow: 0 0 0 3px rgba(51, 144, 236, 0.15);
}

.input-field::placeholder {
  color: var(--tg-theme-hint-color);
}

.input-field.error {
  border-color: var(--tg-theme-destructive-text-color);
}

.input-field.error:focus {
  box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.15);
}

/* Input Group */
.input-group {
  margin-bottom: 16px;
}

.input-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--tg-theme-text-color);
}

.input-help {
  font-size: var(--font-size-xs);
  color: var(--tg-theme-hint-color);
  margin-top: 4px;
}

/* Checkbox */
.checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.checkbox input {
  display: none;
}

.checkbox-box {
  width: 22px;
  height: 22px;
  border: 2px solid var(--tg-theme-hint-color);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.checkbox input:checked + .checkbox-box {
  background-color: var(--tg-theme-button-color);
  border-color: var(--tg-theme-button-color);
}

.checkbox-box svg {
  width: 14px;
  height: 14px;
  color: var(--tg-theme-button-text-color);
  opacity: 0;
  transform: scale(0.5);
  transition: all var(--transition-fast);
}

.checkbox input:checked + .checkbox-box svg {
  opacity: 1;
  transform: scale(1);
}

.checkbox-label {
  font-size: var(--font-size-md);
}

/* Radio Button */
.radio {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.radio input {
  display: none;
}

.radio-circle {
  width: 22px;
  height: 22px;
  border: 2px solid var(--tg-theme-hint-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.radio input:checked + .radio-circle {
  border-color: var(--tg-theme-button-color);
}

.radio-circle::after {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--tg-theme-button-color);
  opacity: 0;
  transform: scale(0);
  transition: all var(--transition-fast);
}

.radio input:checked + .radio-circle::after {
  opacity: 1;
  transform: scale(1);
}

.radio-label {
  font-size: var(--font-size-md);
}

/* Select Dropdown */
.select-wrapper {
  position: relative;
}

.select-field {
  width: 100%;
  padding: 12px 40px 12px 16px;
  background-color: var(--tg-theme-secondary-bg-color);
  border: 1px solid transparent;
  border-radius: var(--border-radius-md);
  color: var(--tg-theme-text-color);
  font-size: var(--font-size-md);
  appearance: none;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.select-field:focus {
  border-color: var(--tg-theme-accent-text-color);
}

.select-arrow {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--tg-theme-hint-color);
  pointer-events: none;
}

/* ==========================================================================
   31. Lock Screen
   ========================================================================== */

.lock-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--tg-theme-bg-color);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.lock-screen.hidden {
  display: none;
}

.lock-content {
  text-align: center;
  padding: 24px;
  max-width: 320px;
}

.lock-content svg {
  color: var(--tg-theme-button-color);
  margin-bottom: 16px;
}

.lock-content h2 {
  font-size: 1.5em;
  margin-bottom: 8px;
}

.lock-content p {
  color: var(--tg-theme-hint-color);
  margin-bottom: 24px;
}

.lock-content .action-btn {
  display: inline-block;
  text-decoration: none;
}

/* ==========================================================================
   Quotes Tab Styles
   ========================================================================== */

/* Quick Stats */
.quotes-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.stat-card {
  background: linear-gradient(135deg, var(--tg-theme-button-color), #7c3aed);
  border-radius: var(--border-radius-lg);
  padding: 16px;
  text-align: center;
  color: white;
}

.stat-value {
  display: block;
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 4px;
}

.stat-label {
  font-size: var(--font-size-xs);
  opacity: 0.9;
}

/* Sub Tabs */
.sub-tabs {
  display: flex;
  background-color: var(--tg-theme-secondary-bg-color);
  border-radius: var(--border-radius-lg);
  padding: 4px;
  margin-bottom: 16px;
}

.sub-tab {
  flex: 1;
  padding: 10px 16px;
  background: transparent;
  border: none;
  color: var(--tg-theme-hint-color);
  font-weight: 500;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sub-tab.active {
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

/* Subtab Content */
.subtab-content {
  display: none;
}

.subtab-content.active {
  display: block;
}

/* Filter Pills */
.filter-pills {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 16px;
  -webkit-overflow-scrolling: touch;
}

.pill {
  padding: 8px 16px;
  background-color: var(--tg-theme-secondary-bg-color);
  border: none;
  border-radius: 20px;
  color: var(--tg-theme-hint-color);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pill.active {
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

/* Card List */
.card-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-bottom: 80px;
}

/* Quote/Invoice Cards */
.quote-card,
.invoice-card {
  background-color: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-lg);
  padding: 16px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.quote-card:hover,
.invoice-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.quote-card:active,
.invoice-card:active {
  transform: scale(0.98);
}

.quote-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.quote-number {
  font-weight: 600;
  font-size: var(--font-size-sm);
  font-family: var(--font-mono);
}

.quote-client {
  color: var(--tg-theme-text-color);
  font-weight: 500;
  margin-bottom: 8px;
}

.quote-details {
  display: flex;
  justify-content: space-between;
  color: var(--tg-theme-hint-color);
  font-size: var(--font-size-xs);
  margin-bottom: 8px;
}

.quote-total {
  font-size: 20px;
  font-weight: 700;
  color: var(--tg-theme-button-color);
}

/* Status Badges */
.status-badge {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.status-badge.draft {
  background: #6b7280;
  color: white;
}

.status-badge.sent {
  background: #3b82f6;
  color: white;
}

.status-badge.viewed {
  background: #8b5cf6;
  color: white;
}

.status-badge.accepted {
  background: #10b981;
  color: white;
}

.status-badge.rejected {
  background: #ef4444;
  color: white;
}

.status-badge.expired {
  background: #f59e0b;
  color: black;
}

.status-badge.pending {
  background: #f59e0b;
  color: black;
}

.status-badge.paid {
  background: #10b981;
  color: white;
}

.status-badge.overdue {
  background: #ef4444;
  color: white;
}

/* FAB (Floating Action Button) */
.fab {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + 20px + var(--safe-area-bottom));
  right: 20px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  font-size: 28px;
  border: none;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  z-index: 50;
  transition: all var(--transition-fast);
}

.fab:hover {
  transform: scale(1.1);
}

.fab:active {
  transform: scale(0.95);
}

/* Payment Methods Grid */
.payment-methods {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}

.method-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 16px 12px;
  border: 2px solid var(--tg-theme-hint-color);
  border-radius: var(--border-radius-md);
  background: transparent;
  color: var(--tg-theme-text-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.method-btn:hover {
  border-color: var(--tg-theme-button-color);
}

.method-btn.selected {
  border-color: var(--tg-theme-button-color);
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

.method-btn span:first-child {
  font-size: 24px;
}

.method-btn span:last-child {
  font-size: var(--font-size-xs);
}

/* Totals Preview */
.totals-preview {
  background: var(--tg-theme-secondary-bg-color);
  border-radius: var(--border-radius-md);
  padding: 16px;
  margin-bottom: 16px;
}

.total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(128, 128, 128, 0.1);
}

.total-row:last-child {
  border-bottom: none;
}

.total-final {
  border-top: 2px solid var(--tg-theme-hint-color);
  font-size: 18px;
  font-weight: 700;
  padding-top: 12px;
  margin-top: 8px;
}

.discount-input {
  display: flex;
  align-items: center;
  gap: 4px;
}

.discount-input input {
  width: 60px;
  text-align: right;
  padding: 8px;
}

/* Quote Wizard */
.quote-step {
  animation: fadeIn 0.3s ease;
}

.quote-step label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--tg-theme-hint-color);
}

.quote-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}

.quote-item-row {
  display: grid;
  grid-template-columns: 1fr 60px 80px 40px;
  gap: 8px;
  align-items: center;
}

.quote-item-row input {
  padding: 10px;
}

.btn-remove-item {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 59, 48, 0.1);
  color: var(--color-error);
  border: none;
  font-size: 18px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-remove-item:hover {
  background: rgba(255, 59, 48, 0.2);
}

/* Client Search */
.client-search {
  position: relative;
  margin-bottom: 12px;
}

.suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  z-index: 10;
  display: none;
}

.client-search:focus-within .suggestions {
  display: block;
}

.suggestion-item {
  padding: 12px 16px;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.suggestion-item:hover {
  background: rgba(128, 128, 128, 0.1);
}

/* Detail Modal */
.detail-section {
  margin-bottom: 20px;
}

.detail-section h4 {
  font-size: var(--font-size-sm);
  color: var(--tg-theme-hint-color);
  margin-bottom: 8px;
}

.detail-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(128, 128, 128, 0.1);
}

.detail-item:last-child {
  border-bottom: none;
}

.item-name {
  color: var(--tg-theme-text-color);
}

.item-amount {
  font-weight: 600;
}

.total-big {
  font-size: 28px;
  font-weight: 700;
  color: var(--tg-theme-button-color);
}

/* Quote Actions Footer */
.quote-actions {
  display: flex;
  justify-content: space-around;
}

.btn-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 20px;
  background: transparent;
  border: none;
  color: var(--tg-theme-text-color);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: var(--border-radius-md);
}

.btn-icon:hover {
  background: rgba(128, 128, 128, 0.1);
}

.btn-icon span:first-child {
  font-size: 24px;
}

.btn-icon span:last-child {
  font-size: var(--font-size-xs);
}

/* Buttons */
.btn-primary {
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  padding: 12px 24px;
  border-radius: var(--border-radius-md);
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-secondary {
  background-color: var(--tg-theme-secondary-bg-color);
  color: var(--tg-theme-text-color);
  padding: 12px 24px;
  border-radius: var(--border-radius-md);
  border: none;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-link {
  background: transparent;
  color: var(--tg-theme-link-color);
  border: none;
  padding: 8px 0;
  font-weight: 500;
  cursor: pointer;
}

.btn-register-payment {
  margin-top: 12px;
  width: 100%;
  padding: 10px;
  background-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  border: none;
  border-radius: var(--border-radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-register-payment:hover {
  opacity: 0.9;
}

/* Modal Slide Up Animation */
.modal.slide-up {
  transform: translateY(100%);
}

.modal-overlay.open .modal.slide-up {
  transform: translateY(0);
}

/* ==========================================================================
   18. Time Tracking Tab
   ========================================================================== */

/* Timer banner */
.timer-banner {
  background: linear-gradient(135deg, var(--tg-theme-button-color), #4f46e5);
  color: white;
  padding: 16px;
  border-radius: var(--border-radius-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  box-shadow: var(--shadow-md);
}

.timer-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timer-project {
  font-size: var(--font-size-sm);
  opacity: 0.9;
}

.timer-elapsed {
  font-size: 28px;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 2px;
}

.btn-stop {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  padding: 12px 20px;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.btn-stop:hover {
  background: rgba(255, 255, 255, 0.3);
}

.btn-stop:active {
  transform: scale(0.95);
}

/* Quick Start Section */
.quick-start {
  background: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-md);
  padding: 16px;
  margin-bottom: 16px;
}

.quick-start h3 {
  font-size: var(--font-size-sm);
  color: var(--tg-theme-section-header-text-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.project-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.project-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--tg-theme-secondary-bg-color);
  border: none;
  border-radius: 20px;
  color: var(--tg-theme-text-color);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.project-btn:hover {
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

.project-btn:active {
  transform: scale(0.95);
}

.project-color-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.btn-outline {
  width: 100%;
  padding: 12px;
  background: transparent;
  border: 1px dashed var(--tg-theme-hint-color);
  border-radius: var(--border-radius-sm);
  color: var(--tg-theme-hint-color);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-outline:hover {
  border-color: var(--tg-theme-button-color);
  color: var(--tg-theme-button-color);
}

/* Day Summary */
.day-summary {
  background: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-md);
  padding: 16px;
  margin-bottom: 16px;
}

.day-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.day-header h3 {
  font-size: var(--font-size-sm);
  color: var(--tg-theme-section-header-text-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.day-total {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--tg-theme-button-color);
}

/* Entries List */
.entries-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.entry-card {
  display: flex;
  align-items: center;
  padding: 12px;
  background: var(--tg-theme-secondary-bg-color);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.entry-card:hover {
  transform: translateX(4px);
}

.entry-color {
  width: 4px;
  height: 32px;
  border-radius: 2px;
  margin-right: 12px;
}

.entry-info {
  flex: 1;
  min-width: 0;
}

.entry-project {
  font-weight: 600;
  font-size: var(--font-size-sm);
  margin-bottom: 2px;
}

.entry-desc {
  font-size: var(--font-size-xs);
  color: var(--tg-theme-hint-color);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.entry-duration {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--tg-theme-button-color);
  font-weight: 600;
}

.entries-list.compact .entry-card {
  padding: 8px 12px;
}

.empty-state-small {
  text-align: center;
  padding: 24px;
  color: var(--tg-theme-hint-color);
}

.empty-icon-small {
  font-size: 32px;
  margin-bottom: 8px;
  display: block;
  opacity: 0.5;
}

/* Week Overview */
.week-overview {
  background: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-md);
  padding: 16px;
  margin-bottom: 16px;
}

.week-overview h3 {
  font-size: var(--font-size-sm);
  color: var(--tg-theme-section-header-text-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.week-chart {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  height: 120px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(128, 128, 128, 0.2);
}

.day-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 36px;
  height: 100%;
  justify-content: flex-end;
}

.bar-fill {
  width: 24px;
  background: var(--tg-theme-button-color);
  border-radius: 4px 4px 0 0;
  min-height: 4px;
  transition: height 0.3s ease;
}

.bar-label {
  font-size: 10px;
  color: var(--tg-theme-hint-color);
  margin-top: 4px;
}

.bar-day {
  font-size: 12px;
  font-weight: 600;
  margin-top: 2px;
  color: var(--tg-theme-text-color);
}

.week-stats {
  display: flex;
  justify-content: space-around;
  padding-top: 16px;
}

.week-stats .stat {
  text-align: center;
}

.week-stats .stat-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--tg-theme-button-color);
  display: block;
}

.week-stats .stat-label {
  font-size: var(--font-size-xs);
  color: var(--tg-theme-hint-color);
}

/* Time Projects Section */
.time-projects-section {
  background: var(--tg-theme-section-bg-color);
  border-radius: var(--border-radius-md);
  padding: 16px;
  margin-bottom: 80px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.section-header h3 {
  font-size: var(--font-size-sm);
  color: var(--tg-theme-section-header-text-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  transform: scale(1.1);
}

.btn-icon:active {
  transform: scale(0.95);
}

.time-project-card {
  display: flex;
  align-items: center;
  padding: 12px;
  background: var(--tg-theme-secondary-bg-color);
  border-radius: var(--border-radius-sm);
  margin-bottom: 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.time-project-card:hover {
  transform: translateX(4px);
}

.time-project-card:last-child {
  margin-bottom: 0;
}

.project-color-indicator {
  width: 4px;
  height: 40px;
  border-radius: 2px;
  margin-right: 12px;
}

.project-card-info {
  flex: 1;
}

.project-card-name {
  font-weight: 600;
  margin-bottom: 2px;
}

.project-card-client {
  font-size: var(--font-size-xs);
  color: var(--tg-theme-hint-color);
}

.project-card-hours {
  text-align: right;
}

.project-hours-value {
  font-weight: 700;
  color: var(--tg-theme-text-color);
}

.project-hours-label {
  font-size: var(--font-size-xs);
  color: var(--tg-theme-hint-color);
}

/* FAB (Floating Action Button) */
.fab {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + 20px + var(--safe-area-bottom));
  right: 20px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  border: none;
  z-index: 50;
  transition: all var(--transition-fast);
}

.fab:hover {
  transform: scale(1.1);
}

.fab:active {
  transform: scale(0.95);
}

.fab.secondary {
  background: var(--tg-theme-secondary-bg-color);
  color: var(--tg-theme-text-color);
  border: 1px solid rgba(128, 128, 128, 0.2);
}

/* Time Form Styles */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--tg-theme-hint-color);
  margin-bottom: 8px;
}

.form-input,
.form-select {
  width: 100%;
  padding: 12px 16px;
  background: var(--tg-theme-secondary-bg-color);
  border: 1px solid rgba(128, 128, 128, 0.2);
  border-radius: var(--border-radius-sm);
  color: var(--tg-theme-text-color);
  font-size: var(--font-size-md);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
  border-color: var(--tg-theme-button-color);
  outline: none;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%238b8b8b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 40px;
}

.duration-input {
  display: flex;
  align-items: center;
  gap: 8px;
}

.duration-input span {
  color: var(--tg-theme-hint-color);
}

.duration-field {
  width: 80px;
  text-align: center;
  padding: 12px;
  background: var(--tg-theme-secondary-bg-color);
  border: 1px solid rgba(128, 128, 128, 0.2);
  border-radius: var(--border-radius-sm);
  color: var(--tg-theme-text-color);
  font-size: var(--font-size-lg);
}

.duration-field:focus {
  border-color: var(--tg-theme-button-color);
  outline: none;
}

.rate-input {
  display: flex;
  align-items: center;
  gap: 8px;
}

.rate-symbol,
.rate-unit {
  color: var(--tg-theme-hint-color);
}

.rate-field {
  flex: 1;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--tg-theme-button-color);
}

.checkbox-text {
  font-size: var(--font-size-md);
  color: var(--tg-theme-text-color);
}

/* Color Picker */
.color-picker {
  display: flex;
  gap: 12px;
}

.color-option {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.color-option:hover {
  transform: scale(1.1);
}

.color-option.active {
  border-color: white;
  box-shadow: 0 0 0 2px var(--tg-theme-button-color);
}

/* Project Detail Stats */
.project-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.project-stats-grid .stat {
  text-align: center;
  padding: 12px;
  background: var(--tg-theme-secondary-bg-color);
  border-radius: var(--border-radius-sm);
}

.project-stats-grid .stat-value {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--tg-theme-button-color);
  display: block;
  margin-bottom: 4px;
}

.project-stats-grid .stat-label {
  font-size: var(--font-size-xs);
  color: var(--tg-theme-hint-color);
}

/* Budget Progress */
.budget-progress {
  margin: 16px 0;
}

.progress-bar {
  height: 8px;
  background: var(--tg-theme-secondary-bg-color);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--tg-theme-button-color);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.progress-text {
  font-size: var(--font-size-xs);
  color: var(--tg-theme-hint-color);
  margin-top: 4px;
  display: block;
}

.section-subtitle {
  font-size: var(--font-size-sm);
  color: var(--tg-theme-section-header-text-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 16px 0 12px;
}

/* Timer Pulse Animation */
#tab-time .timer-banner.active {
  animation: timerPulse 2s ease-in-out infinite;
}

@keyframes timerPulse {
  0%, 100% {
    box-shadow: 0 4px 16px rgba(88, 101, 242, 0.3);
  }
  50% {
    box-shadow: 0 4px 24px rgba(88, 101, 242, 0.5);
  }
}

/* ==========================================================================
   End of Stylesheet
   ========================================================================== */