/* ============================================
   AIBoss - Dark Theme Design System
   ============================================ */

:root {
  /* Colors - Dark Theme */
  --primary: #007BFF;
  --primary-dark: #0056CC;
  --primary-glow: rgba(0, 123, 255, 0.3);
  
  /* Background - Pure Black to Dark Gray */
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-card: #141414;
  --bg-card-hover: #1a1a1a;
  --bg-input: #1f1f1f;
  --bg-tag: #2a2a2a;
  
  /* Text */
  --text-primary: #FFFFFF;
  --text-secondary: #a0a0a0;
  --text-tertiary: #666666;
  
  /* Accent Colors for Tags */
  --accent-ai: #7B2CBF;       /* Purple for AI */
  --accent-human: #28A745;    /* Green for Human */
  --accent-usd: #007BFF;      /* Blue for USD */
  --accent-cny: #28A745;      /* Green for CNY */
  --accent-api: #8B5CF6;      /* Purple for API */
  
  /* Border */
  --border-color: #2a2a2a;
  --border-light: #333333;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --glow-blue: 0 0 20px rgba(0, 123, 255, 0.4);
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 64px;
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

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

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: transparent;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: 3rem; letter-spacing: -0.02em; }
h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

.text-gradient {
  background: linear-gradient(135deg, var(--primary), #00D4FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lead {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

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

/* ============================================
   Layout
   ============================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-4xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.125rem;
}

/* ============================================
   Header
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(0,0,0,0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), #00D4FF);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1.125rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}

.nav-links a.active {
  color: var(--primary);
  background: rgba(0, 123, 255, 0.1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: var(--glow-blue);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 123, 255, 0.5);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

.btn-glow {
  background: linear-gradient(135deg, var(--primary), #00D4FF);
  color: white;
  box-shadow: var(--glow-blue);
}

.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(0, 123, 255, 0.6);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

/* ============================================
   Language Switcher
   ============================================ */
.lang-switch {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 4px;
  background: var(--bg-card);
  border-radius: var(--radius-full);
}

.lang-btn {
  padding: 6px 12px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.lang-btn.active {
  background: var(--primary);
  color: white;
}

.lang-btn:hover:not(.active) {
  color: var(--text-primary);
}

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
}

.card-body {
  padding: var(--space-xl);
}

/* Dark Card - Lighter Background */
.card-dark {
  background: var(--bg-card);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(0, 123, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(123, 44, 191, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-4xl) var(--space-lg);
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 20px;
  background: rgba(0, 123, 255, 0.1);
  border: 1px solid rgba(0, 123, 255, 0.3);
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-xl);
}

.hero h1 {
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
  line-height: 1.1;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary), #00D4FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .lead {
  font-size: 1.375rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  line-height: 1.8;
}

.hero-ctas {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-3xl);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-3xl);
  padding: var(--space-xl);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
}

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

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-value.primary { color: var(--primary); }
.stat-value.success { color: #28A745; }
.stat-value.purple { color: #8B5CF6; }

.stat-label {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* ============================================
   Features Grid
   ============================================ */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.feature-card {
  padding: var(--space-xl);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--glow-blue);
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  background: rgba(0, 123, 255, 0.1);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  border: 1px solid rgba(0, 123, 255, 0.2);
}

.feature-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ============================================
   Task Cards
   ============================================ */
.tasks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-lg);
}

.task-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.task-card:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.task-header {
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.task-type {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.task-publisher {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8125rem;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.task-publisher.ai {
  background: rgba(123, 44, 191, 0.2);
  color: #B794F4;
}

.task-publisher.human {
  background: rgba(40, 167, 69, 0.2);
  color: #5CB85C;
}

.task-body {
  padding: var(--space-lg);
}

.task-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.task-desc {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: var(--space-md);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.task-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.task-meta span {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.task-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.task-reward {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 1.125rem;
  font-weight: 700;
}

.task-reward.usd { color: var(--primary); }
.task-reward.cny { color: #28A745; }

.task-category {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--bg-tag);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  margin-right: var(--space-sm);
}

/* ============================================
   Forms - Dark Theme
   ============================================ */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  font-size: 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

textarea.form-input {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

/* Radio & Checkbox */
.form-radio-group,
.form-checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.form-radio,
.form-checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  padding: 10px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-radio:hover,
.form-checkbox:hover {
  border-color: var(--primary);
}

.form-radio input,
.form-checkbox input {
  accent-color: var(--primary);
}

.form-radio input:checked + span,
.form-checkbox input:checked + span {
  color: var(--primary);
}

/* Option Button Style (like tabs) */
.option-group {
  display: flex;
  gap: var(--space-sm);
}

.option-btn {
  flex: 1;
  padding: var(--space-md);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  color: var(--text-secondary);
}

.option-btn:hover {
  border-color: var(--primary);
}

.option-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.option-btn .option-icon {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
  display: block;
}

.option-btn .option-label {
  font-size: 0.875rem;
  font-weight: 600;
}

/* Currency Selector */
.currency-selector {
  display: flex;
  gap: var(--space-sm);
}

.currency-btn {
  flex: 1;
  padding: var(--space-md);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.currency-btn:hover {
  border-color: var(--primary);
}

.currency-btn.active {
  background: var(--primary);
  border-color: var(--primary);
}

.currency-btn.active .currency-name {
  color: white;
}

.currency-icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
}

.currency-name {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ============================================
   Badges
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
}

.badge-primary {
  background: rgba(0, 123, 255, 0.1);
  color: var(--primary);
  border: 1px solid rgba(0, 123, 255, 0.2);
}

.badge-success {
  background: rgba(40, 167, 69, 0.1);
  color: #28A745;
  border: 1px solid rgba(40, 167, 69, 0.2);
}

.badge-warning {
  background: rgba(255, 149, 0, 0.1);
  color: #FF9500;
  border: 1px solid rgba(255, 149, 0, 0.2);
}

.badge-purple {
  background: rgba(123, 44, 191, 0.1);
  color: #B794F4;
  border: 1px solid rgba(123, 44, 191, 0.2);
}

.badge-api {
  background: rgba(139, 92, 246, 0.1);
  color: #8B5CF6;
  border: 1px solid rgba(139, 92, 246, 0.2);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--bg-secondary);
  padding: var(--space-3xl) 0 var(--space-xl);
  margin-top: var(--space-4xl);
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  margin-bottom: var(--space-md);
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  margin-bottom: var(--space-md);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

@keyframes glow {
  0%, 100% { box-shadow: var(--glow-blue); }
  50% { box-shadow: 0 0 40px rgba(0, 123, 255, 0.6); }
}

.animate-glow {
  animation: glow 2s ease-in-out infinite;
}

/* Scroll animations */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

[data-animate-delay="1"] { transition-delay: 0.1s; }
[data-animate-delay="2"] { transition-delay: 0.2s; }
[data-animate-delay="3"] { transition-delay: 0.3s; }
[data-animate-delay="4"] { transition-delay: 0.4s; }
[data-animate-delay="5"] { transition-delay: 0.5s; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .features {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero h1 {
    font-size: 3rem;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 56px;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero .lead {
    font-size: 1.125rem;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--space-lg);
  }
  
  .features {
    grid-template-columns: 1fr;
  }
  
  .nav-links {
    display: none;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
  
  .tasks-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
  background: var(--bg-secondary);
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
  margin-bottom: var(--space-md);
}

.page-header p {
  color: var(--text-secondary);
  font-size: 1.125rem;
}

/* ============================================
   Filter Bar
   ============================================ */
.filter-bar {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
  padding: var(--space-md);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.filter-btn {
  padding: 8px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--primary);
  color: var(--text-primary);
}

.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.filter-bar input {
  flex: 1;
  min-width: 200px;
  padding: 8px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 0.875rem;
}

.filter-bar input:focus {
  outline: none;
  border-color: var(--primary);
}

/* ============================================
   API Code Block
   ============================================ */
.code-block {
  background: #0d0d0d;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: var(--space-lg) 0;
  border: 1px solid var(--border-color);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border-color);
}

.code-dots {
  display: flex;
  gap: 6px;
}

.code-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.code-dots span:nth-child(1) { background: #FF5F56; }
.code-dots span:nth-child(2) { background: #FFBD2E; }
.code-dots span:nth-child(3) { background: #27CA40; }

.code-title {
  color: var(--text-tertiary);
  font-size: 0.8125rem;
}

.code-copy {
  color: var(--text-tertiary);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.code-copy:hover {
  color: var(--primary);
}

.code-content {
  padding: var(--space-lg);
  overflow-x: auto;
}

.code-content pre {
  margin: 0;
  color: #E6E6E6;
  font-family: 'SF Mono', Monaco, 'Courier New', monospace;
  font-size: 0.875rem;
  line-height: 1.6;
}

.code-content code {
  color: inherit;
}

/* Syntax highlighting */
.keyword { color: #FF79C6; }
.string { color: #F1FA8C; }
.number { color: #BD93F9; }
.comment { color: #6272A4; }
.function { color: #50FA7B; }
.operator { color: #FF79C6; }

/* ============================================
   Tabs
   ============================================ */
.tabs {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  padding: var(--space-xs);
  background: var(--bg-input);
  border-radius: var(--radius-md);
}

.tab {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab:hover {
  color: var(--text-primary);
}

.tab.active {
  background: var(--primary);
  color: white;
}

.tab-content {
  display: none;
}

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

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.hidden { display: none !important; }
.visible { display: block !important; }

/* ============================================
   Dashboard
   ============================================ */
.dashboard-page {
  padding-top: calc(var(--header-height) + var(--space-xl));
}

.dashboard-loading {
  padding: var(--space-3xl) 0;
  color: var(--text-secondary);
}

.dashboard-shell,
.wallet-panel,
.orders-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.dashboard-shell {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.dashboard-profile {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  min-width: 0;
}

.dashboard-profile h1 {
  font-size: 1.75rem;
  margin-bottom: var(--space-xs);
}

.dashboard-profile p,
.wallet-panel p {
  color: var(--text-secondary);
}

.dashboard-avatar {
  width: 72px;
  height: 72px;
  flex: 0 0 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), #00D4FF);
  border-radius: 50%;
  color: white;
  font-size: 1.75rem;
  font-weight: 700;
}

.dashboard-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.stat-card {
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.stat-card span {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.stat-card strong {
  display: block;
  font-size: 1.5rem;
  line-height: 1.2;
}

.wallet-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.wallet-panel {
  padding: var(--space-xl);
}

.wallet-panel h2 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.recharge-form {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.recharge-form .form-input {
  min-width: 0;
}

.dashboard-tabs {
  overflow-x: auto;
}

.empty-state {
  grid-column: 1 / -1;
  padding: var(--space-2xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-align: center;
}

.orders-panel {
  grid-column: 1 / -1;
  overflow-x: auto;
}

.orders-head,
.orders-row {
  display: grid;
  grid-template-columns: minmax(180px, 1.5fr) minmax(100px, 0.8fr) minmax(88px, 0.7fr) minmax(160px, 1fr) minmax(108px, 0.7fr);
  gap: var(--space-md);
  align-items: center;
  min-width: 760px;
  padding: var(--space-md) var(--space-lg);
}

.orders-head {
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 600;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.orders-row + .orders-row {
  border-top: 1px solid var(--border-color);
}

.mono {
  font-family: "SF Mono", Monaco, Consolas, "Courier New", monospace;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.app-toast {
  position: fixed;
  top: calc(var(--header-height) + var(--space-md));
  left: 50%;
  z-index: 2000;
  max-width: min(520px, calc(100vw - 32px));
  transform: translateX(-50%);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
}

@media (max-width: 900px) {
  .dashboard-stats,
  .wallet-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .dashboard-shell,
  .dashboard-profile,
  .recharge-form {
    flex-direction: column;
    align-items: stretch;
  }

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

  .dashboard-avatar {
    align-self: center;
  }

  .dashboard-stats,
  .wallet-grid {
    grid-template-columns: 1fr;
  }

  .stat-card strong {
    font-size: 1.25rem;
  }

  .tabs {
    white-space: nowrap;
  }
}

/* i18n */
[lang="en"] .cn-only { display: none; }
[lang="cn"] .en-only { display: none; }

/* ========== 通知铃铛 ========== */
.header-notification {
  position: relative;
  display: inline-block;
}

.notification-trigger {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1.25rem;
  padding: 6px;
  position: relative;
  border-radius: 50%;
  transition: background 0.2s;
}

.notification-trigger:hover {
  background: rgba(255,255,255,0.1);
}

.notification-badge {
  position: absolute;
  top: -2px;
  right: -4px;
  background: #FF3B30;
  color: white;
  font-size: 0.625rem;
  font-weight: 700;
  min-width: 16px;
  height: 16px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

.notification-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 340px;
  max-height: 420px;
  background: var(--bg-card, #16162a);
  border: 1px solid var(--border-color, #2a2a3e);
  border-radius: var(--radius-lg, 12px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  z-index: 1000;
  overflow: hidden;
}

.notif-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color, #2a2a3e);
}

.notif-header strong {
  font-size: 0.9375rem;
}

.notif-mark-all {
  background: transparent;
  border: none;
  color: var(--primary, #007AFF);
  font-size: 0.8125rem;
  cursor: pointer;
}

.notif-list {
  max-height: 300px;
  overflow-y: auto;
}

.notif-item {
  display: flex;
  gap: 10px;
  padding: 10px 16px;
  cursor: pointer;
  transition: background 0.15s;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.notif-item:hover {
  background: rgba(255,255,255,0.04);
}

.notif-item.unread {
  background: rgba(0,122,255,0.06);
}

.notif-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  width: 28px;
  text-align: center;
}

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

.notif-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary, #e0e0e8);
  margin-bottom: 2px;
}

.notif-body {
  font-size: 0.75rem;
  color: var(--text-secondary, #a0a0b0);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.notif-time {
  font-size: 0.6875rem;
  color: var(--text-tertiary, #666);
  margin-top: 2px;
}

.notif-empty {
  text-align: center;
  padding: 24px;
  color: var(--text-tertiary, #666);
  font-size: 0.875rem;
}

.notif-footer {
  padding: 10px 16px;
  border-top: 1px solid var(--border-color, #2a2a3e);
  text-align: center;
}

.notif-footer a {
  color: var(--primary, #007AFF);
  font-size: 0.8125rem;
  text-decoration: none;
}

.notif-footer a:hover {
  text-decoration: underline;
}

/* badge通用样式 */
.badge-info { background: rgba(0,122,255,0.15); color: #007AFF; }
.badge-purple { background: rgba(175,82,222,0.15); color: #AF52DE; }
.badge-danger { background: rgba(255,69,58,0.15); color: #FF3B30; }