/* 秒思智能审核平台 - 全局样式文件 */
/* 基于 UIDesignSpec.md 设计规范 */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&display=swap');

@tailwind base;
@tailwind components;
@tailwind utilities;

/* ========================================
   1. CSS Variables (设计令牌)
   ======================================== */
:root {
  /* 背景色 */
  --bg-page: #0B0B0E;
  --bg-card: #16161A;
  --bg-elevated: #1A1A1E;

  /* 文字色 */
  --text-primary: #FAFAF9;
  --text-secondary: #A1A1AA;
  --text-tertiary: #71717A;

  /* 强调色 */
  --accent-indigo: #6366F1;
  --accent-green: #32D583;
  --accent-coral: #E85A4F;
  --accent-amber: #F59E0B;

  /* 边框色 */
  --border-subtle: #27272A;

  /* 字体 */
  --font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* 圆角 */
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-tag: 4px;

  /* 间距 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 20px;
  --spacing-2xl: 24px;
  --spacing-3xl: 32px;
}

/* ========================================
   2. Base Styles (基础样式)
   ======================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.5;
}

/* ========================================
   3. Typography (字体系统)
   ======================================== */
.text-page-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.text-card-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
}

.text-section-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.text-body {
  font-size: 15px;
  font-weight: 400;
  color: var(--text-primary);
}

.text-caption {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
}

.text-small {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-tertiary);
}

.text-nav {
  font-size: 11px;
  font-weight: 400;
}

/* ========================================
   4. Component Styles (组件样式)
   ======================================== */

/* Card 卡片 */
@layer components {
  .card {
    @apply bg-bg-card rounded-card;
    padding: 14px 16px;
  }

  .card-desktop {
    @apply bg-bg-card rounded-card;
    padding: 16px 20px;
  }
}

/* Button 按钮 */
@layer components {
  .btn {
    @apply inline-flex items-center justify-center font-semibold transition-all duration-200;
    border-radius: var(--radius-btn);
  }

  .btn-primary {
    @apply btn bg-accent-indigo text-white;
    padding: 10px 16px;
  }

  .btn-primary:hover {
    @apply opacity-90;
  }

  .btn-primary:active {
    @apply opacity-80;
  }

  .btn-secondary {
    @apply btn bg-bg-elevated text-text-secondary;
    padding: 8px 16px;
  }

  .btn-secondary:hover {
    @apply bg-opacity-80;
  }

  .btn-danger {
    @apply btn bg-accent-coral text-white;
    padding: 10px 16px;
  }

  .btn-success {
    @apply btn bg-accent-green text-white;
    padding: 10px 16px;
  }
}

/* Status Tags 状态标签 */
@layer components {
  .tag {
    @apply inline-flex items-center px-2 py-1 text-xs font-medium;
    border-radius: var(--radius-tag);
  }

  .tag-success {
    background-color: rgba(50, 213, 131, 0.125);
    color: var(--accent-green);
  }

  .tag-pending {
    background-color: rgba(99, 102, 241, 0.125);
    color: var(--accent-indigo);
  }

  .tag-error {
    background-color: rgba(232, 90, 79, 0.125);
    color: var(--accent-coral);
  }

  .tag-warning {
    background-color: rgba(245, 158, 11, 0.125);
    color: var(--accent-amber);
  }
}

/* Bottom Navigation 底部导航 (移动端) */
@layer components {
  .bottom-nav {
    @apply fixed bottom-0 left-0 right-0 flex justify-around items-center;
    height: 83px;
    padding: 12px 21px;
    background: linear-gradient(180deg, transparent 0%, var(--bg-page) 50%);
  }

  .nav-item {
    @apply flex flex-col items-center gap-1 text-text-secondary;
  }

  .nav-item.active {
    @apply text-accent-indigo;
  }

  .nav-item-icon {
    @apply w-6 h-6;
  }

  .nav-item-label {
    @apply text-nav;
  }
}

/* Sidebar Navigation 侧边栏导航 (桌面端) */
@layer components {
  .sidebar {
    @apply fixed left-0 top-0 bottom-0 bg-bg-card flex flex-col;
    width: 260px;
  }

  .sidebar-nav-item {
    @apply flex items-center gap-2.5 px-3 py-2.5 rounded-btn text-text-secondary transition-colors;
  }

  .sidebar-nav-item:hover {
    @apply bg-bg-elevated;
  }

  .sidebar-nav-item.active {
    @apply bg-bg-elevated text-accent-indigo font-semibold;
  }

  .sidebar-nav-icon {
    @apply w-5 h-5;
  }
}

/* Status Bar 状态栏 (移动端) */
@layer components {
  .status-bar {
    @apply flex items-center justify-between px-6;
    height: 44px;
    background-color: var(--bg-page);
  }

  .status-bar-time {
    @apply text-body font-semibold;
  }

  .status-bar-icons {
    @apply flex items-center gap-1;
  }
}

/* ========================================
   5. Layout Utilities (布局工具类)
   ======================================== */

/* Mobile Layout */
.mobile-layout {
  @apply min-h-screen flex flex-col;
  padding: 16px 24px;
  padding-bottom: 99px; /* 83px bottom nav + 16px padding */
}

/* Desktop Layout */
.desktop-layout {
  @apply min-h-screen;
  margin-left: 260px; /* sidebar width */
  padding: 32px;
}

/* Content Area */
.content-area {
  @apply flex flex-col;
  gap: var(--spacing-lg);
}

.content-area-desktop {
  @apply flex flex-col;
  gap: var(--spacing-2xl);
}

/* ========================================
   6. Form Elements (表单元素)
   ======================================== */
@layer components {
  .input {
    @apply w-full bg-bg-elevated text-text-primary border border-border-subtle rounded-btn px-4 py-2.5 text-body;
    transition: border-color 0.2s;
  }

  .input:focus {
    @apply outline-none border-accent-indigo;
  }

  .input::placeholder {
    @apply text-text-tertiary;
  }

  .select {
    @apply input appearance-none cursor-pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23A1A1AA' 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;
    padding-right: 40px;
  }

  .textarea {
    @apply input resize-none;
    min-height: 100px;
  }
}

/* ========================================
   7. Animations (动画)
   ======================================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.animate-fade-in {
  animation: fadeIn 0.2s ease-out;
}

.animate-slide-up {
  animation: slideUp 0.3s ease-out;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ========================================
   8. Scrollbar Styles (滚动条样式)
   ======================================== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-card);
}

::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* ========================================
   9. Responsive Breakpoints (响应式断点)
   ======================================== */
/* Mobile: < 768px (default) */
/* Tablet: 768px - 1024px */
/* Desktop: > 1024px */

@media (min-width: 768px) {
  .mobile-only {
    display: none;
  }
}

@media (max-width: 767px) {
  .desktop-only {
    display: none;
  }
}

/* ========================================
   10. Utility Classes (工具类)
   ======================================== */
.truncate-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.truncate-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.glass-effect {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Safe area for iOS */
.safe-area-bottom {
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.safe-area-top {
  padding-top: env(safe-area-inset-top, 0);
}