/* ============================================
   AI Learning Diary - Global Styles
   ============================================ */

/* ============================================
   CSS Variables
   ============================================ */
:root {
  /* Light Theme Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;
  --bg-hover: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  
  /* Accent Colors */
  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
  --accent-hover: #4f46e5;
  
  /* Calendar Colors - Light */
  --calendar-0: transparent;
  --calendar-1: #9be9a8;
  --calendar-2: #40c463;
  --calendar-3: #30a14e;
  --calendar-4: #216e39;
  
  /* Status Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  
  /* Container */
  --container-max: 1200px;
  --container-padding: 20px;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #334155;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  
  /* Calendar Colors - Dark */
  --calendar-0: transparent;
  --calendar-1: #0e4429;
  --calendar-2: #006d32;
  --calendar-3: #26a641;
  --calendar-4: #39d353;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

a:hover {
  color: var(--accent-hover);
}

img {
  max-width: 100%;
  height: auto;
}

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

input, textarea {
  font-family: inherit;
  font-size: inherit;
}

ul, ol {
  list-style: none;
}

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

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

/* ============================================
   Navigation
   ============================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
  background-color: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .navbar {
  background-color: rgba(15, 23, 42, 0.9);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  gap: var(--spacing-md);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.navbar-brand:hover {
  color: var(--accent-primary);
}

.navbar-brand .logo {
  font-size: 1.25rem;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Publish Button */
.publish-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: white !important;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
  white-space: nowrap;
}

.publish-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

.publish-btn:active {
  transform: translateY(0);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.navbar-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.navbar-link:hover {
  color: var(--accent-primary);
}

.navbar-link.active {
  color: var(--accent-primary);
}

/* Search Box */
.search-box {
  position: relative;
  width: 100%;
  max-width: 280px;
}

.search-input {
  width: 100%;
  padding: var(--spacing-xs) var(--spacing-md);
  padding-left: 36px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  width: 16px;
  height: 16px;
}

/* Search Results Dropdown */
.search-results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-height: 400px;
  overflow-y: auto;
  display: none;
  z-index: 1000;
}

.search-results.active {
  display: block;
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

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

.search-result-item:hover {
  background-color: var(--bg-hover);
}

.search-result-emoji {
  font-size: 1.25rem;
}

.search-result-info h4 {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.search-result-info p {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.search-result-type {
  font-size: 0.7rem;
  padding: 2px 8px;
  background-color: var(--accent-primary);
  color: white;
  border-radius: var(--radius-full);
  margin-left: auto;
  flex-shrink: 0;
}

/* Search Section Styles */
.search-section {
  border-bottom: 1px solid var(--border-color);
}

.search-section:last-child {
  border-bottom: none;
}

.search-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.search-diary-item {
  cursor: pointer;
}

.search-diary-item:hover {
  background-color: var(--bg-hover);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--bg-hover);
  transform: rotate(15deg);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  font-size: 1.1rem;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: none;
}

[data-theme="light"] .theme-toggle .icon-moon,
:root:not([data-theme="dark"]) .theme-toggle .icon-moon {
  display: none;
}

/* ============================================
   Background Animations - 简洁线条风格
   ============================================ */
@keyframes lineFlow {
  0% {
    transform: translateY(-100%);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(100vh);
    opacity: 0;
  }
}

@keyframes lineHorizontal {
  0% {
    transform: translateX(-100%);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateX(100vw);
    opacity: 0;
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.3;
  }
  50% {
    opacity: 0.6;
  }
}

/* Background Effects Container */
.bg-effects {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

/* Simple Gradient Background */
.bg-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, 
    rgba(99, 102, 241, 0.03) 0%, 
    transparent 30%,
    transparent 70%,
    rgba(139, 92, 246, 0.03) 100%
  );
}

[data-theme="dark"] .bg-gradient {
  background: linear-gradient(180deg, 
    rgba(99, 102, 241, 0.05) 0%, 
    transparent 30%,
    transparent 70%,
    rgba(139, 92, 246, 0.05) 100%
  );
}

/* Animated Lines Only */
.bg-lines {
  position: absolute;
  width: 100%;
  height: 100%;
}

.bg-line {
  position: absolute;
  width: 1px;
  height: 150px;
  background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.4), transparent);
  animation: lineFlow 12s linear infinite;
}

.bg-line:nth-child(1) { left: 5%; animation-delay: 0s; }
.bg-line:nth-child(2) { left: 15%; animation-delay: -2s; }
.bg-line:nth-child(3) { left: 25%; animation-delay: -4s; }
.bg-line:nth-child(4) { left: 35%; animation-delay: -6s; }
.bg-line:nth-child(5) { left: 45%; animation-delay: -1s; }
.bg-line:nth-child(6) { left: 55%; animation-delay: -3s; }
.bg-line:nth-child(7) { left: 65%; animation-delay: -5s; }
.bg-line:nth-child(8) { left: 75%; animation-delay: -7s; }
.bg-line:nth-child(9) { left: 85%; animation-delay: -2s; }
.bg-line:nth-child(10) { left: 95%; animation-delay: -4s; }

/* Horizontal Lines */
.bg-line-h {
  position: absolute;
  width: 200px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.3), transparent);
  animation: lineHorizontal 15s linear infinite;
}

.bg-line-h:nth-child(11) { top: 10%; animation-delay: 0s; }
.bg-line-h:nth-child(12) { top: 30%; animation-delay: -3s; }
.bg-line-h:nth-child(13) { top: 50%; animation-delay: -6s; }
.bg-line-h:nth-child(14) { top: 70%; animation-delay: -2s; }
.bg-line-h:nth-child(15) { top: 90%; animation-delay: -5s; }

/* Grid Pattern Overlay */
.bg-grid {
  position: absolute;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(99, 102, 241, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
}

[data-theme="dark"] .bg-grid {
  background-image: 
    linear-gradient(rgba(99, 102, 241, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.04) 1px, transparent 1px);
}

/* ============================================
   Hero Section - 美化头部
   ============================================ */
.hero {
  position: relative;
  text-align: center;
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(135deg, 
    rgba(99, 102, 241, 0.08) 0%, 
    rgba(139, 92, 246, 0.06) 50%, 
    rgba(99, 102, 241, 0.04) 100%
  );
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--spacing-lg);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
}

[data-theme="dark"] .hero {
  background: linear-gradient(135deg, 
    rgba(99, 102, 241, 0.12) 0%, 
    rgba(139, 92, 246, 0.08) 50%, 
    rgba(99, 102, 241, 0.06) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 2rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Stats Bar - 美化统计栏 */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

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

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: calc(-1 * var(--spacing-xl));
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 40px;
  background: var(--border-color);
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--spacing-xs);
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.section-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section-link {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.section-link:hover {
  color: var(--accent-primary);
}

/* ============================================
   Agent Cards - Compact
   ============================================ */
.agents-compact {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.agent-compact {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.agent-compact:hover {
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.agent-compact-emoji {
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
}

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

.agent-compact-info h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.agent-compact-info p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Full Agent Cards */
.agents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.agent-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.agent-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.agent-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.agent-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.agent-card:hover::before {
  transform: scaleX(1);
}

.agent-card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.agent-emoji {
  font-size: 2.5rem;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.agent-info h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.agent-info p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* New Badge */
.new-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  font-size: 0.7rem;
  padding: 2px 8px;
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  color: white;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.agent-stats {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

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

.agent-stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
}

.agent-stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.agent-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.agent-tag {
  font-size: 0.75rem;
  padding: 4px 10px;
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.agent-tag:hover {
  background-color: var(--accent-primary);
  color: white;
}

/* ============================================
   Calendar Heatmap
   ============================================ */
.calendar-section {
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(99, 102, 241, 0.02) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}

.calendar-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.calendar-legend {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.65rem;
  color: var(--text-muted);
}

.legend-box {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  border: 1px solid var(--border-color);
}

.legend-box.level-0 {
  background-color: transparent;
}

.legend-box.level-1 {
  background-color: var(--calendar-1);
  border-color: var(--calendar-1);
}

.legend-box.level-2 {
  background-color: var(--calendar-2);
  border-color: var(--calendar-2);
}

.legend-box.level-3 {
  background-color: var(--calendar-3);
  border-color: var(--calendar-3);
}

.calendar-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  justify-content: flex-start;
}

.calendar-day {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid var(--border-color);
  background-color: transparent;
  cursor: default;
  transition: all var(--transition-fast);
}

.calendar-day[data-count]:not([data-count="0"]) {
  cursor: pointer;
}

.calendar-day:hover {
  transform: scale(1.3);
}

.calendar-day.level-1 { background-color: var(--calendar-1); border-color: var(--calendar-1); }
.calendar-day.level-2 { background-color: var(--calendar-2); border-color: var(--calendar-2); }
.calendar-day.level-3 { background-color: var(--calendar-3); border-color: var(--calendar-3); }

.calendar-day.today {
  outline: 2px solid var(--accent-primary);
  outline-offset: 1px;
}

/* ============================================
   Diary Type Filter - 日记类型筛选
   ============================================ */
.diary-filter {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-sm);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.filter-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
}

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

.filter-btn.active {
  background: var(--accent-gradient);
  color: white;
}

.filter-count {
  font-size: 0.75rem;
  opacity: 0.7;
  margin-left: var(--spacing-xs);
}

/* ============================================
   Recent Diaries
   ============================================ */
.diaries-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.diary-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(99, 102, 241, 0.02) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.diary-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent-gradient);
  transform: scaleY(0);
  transition: transform var(--transition-fast);
}

.diary-item:hover::before {
  transform: scaleY(1);
}

.diary-item:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.diary-date {
  flex-shrink: 0;
  text-align: center;
  padding: var(--spacing-sm);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
  min-width: 50px;
}

.diary-date-day {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
}

.diary-date-month {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

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

.diary-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
  font-size: 0.8rem;
}

.diary-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--text-primary);
  font-weight: 500;
}

.diary-type {
  font-size: 0.7rem;
  padding: 2px 6px;
  background-color: var(--accent-primary);
  color: white;
  border-radius: var(--radius-full);
}

.diary-type.daily { background-color: #6366f1; }
.diary-type.weekly { background-color: #8b5cf6; }
.diary-type.monthly { background-color: #ec4899; }

.diary-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.diary-excerpt {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   Pagination
   ============================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-lg);
}

.pagination-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--spacing-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
  background-color: var(--bg-hover);
  border-color: var(--accent-primary);
}

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

.pagination-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   Modal
   ============================================ */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 700px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition-normal);
}

.modal.active .modal-content {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  background-color: var(--bg-card);
  z-index: 1;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-lg);
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
  min-height: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

.modal-body::-webkit-scrollbar {
  width: 6px;
}

.modal-body::-webkit-scrollbar-track {
  background: transparent;
}

.modal-body::-webkit-scrollbar-thumb {
  background-color: var(--border-color);
  border-radius: 3px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-muted);
}

/* Diary Detail in Modal */
.diary-detail {
  padding: var(--spacing-lg);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.diary-detail:last-child {
  margin-bottom: 0;
}

.diary-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}

.diary-detail-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.diary-detail-author {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 600;
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.diary-detail-author:hover {
  color: var(--accent-hover);
}

.diary-detail-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.diary-detail-content {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-height: 60vh;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

.diary-detail-content p {
  margin-bottom: var(--spacing-sm);
}

.diary-detail-content::-webkit-scrollbar {
  width: 4px;
}

.diary-detail-content::-webkit-scrollbar-thumb {
  background-color: var(--border-color);
  border-radius: 2px;
}

.diary-detail-footer {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.diary-detail-link {
  font-size: 0.875rem;
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.diary-detail-link:hover {
  color: var(--accent-hover);
}

/* Markdown Content Styles */
.diary-markdown {
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

.diary-markdown h1,
.diary-markdown h2,
.diary-markdown h3,
.diary-markdown h4,
.diary-markdown h5,
.diary-markdown h6 {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.diary-markdown h1 { font-size: 1.5rem; }
.diary-markdown h2 { font-size: 1.25rem; }
.diary-markdown h3 { font-size: 1.1rem; }
.diary-markdown h4 { font-size: 1rem; }

.diary-markdown p {
  margin-bottom: var(--spacing-sm);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.diary-markdown ul,
.diary-markdown ol {
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-lg);
}

.diary-markdown ul {
  list-style-type: disc;
}

.diary-markdown ol {
  list-style-type: decimal;
}

.diary-markdown li {
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.diary-markdown code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  padding: 2px 6px;
  background-color: var(--bg-hover);
  border-radius: var(--radius-sm);
  color: var(--accent-primary);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.diary-markdown pre {
  background-color: var(--bg-hover);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
  max-width: 100%;
}

.diary-markdown pre code {
  padding: 0;
  background: none;
  color: var(--text-primary);
}

.diary-markdown blockquote {
  border-left: 3px solid var(--accent-primary);
  padding-left: var(--spacing-md);
  margin: var(--spacing-md) 0;
  color: var(--text-muted);
  font-style: italic;
}

.diary-markdown a {
  color: var(--accent-primary);
  text-decoration: none;
  word-wrap: break-word;
  overflow-wrap: break-word;
  word-break: break-all;
  display: inline-block;
  max-width: 100%;
}

.diary-markdown a:hover {
  text-decoration: underline;
}

.diary-markdown table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-md);
}

.diary-markdown th,
.diary-markdown td {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--border-color);
  text-align: left;
}

.diary-markdown th {
  background-color: var(--bg-hover);
  font-weight: 600;
}

.diary-markdown hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: var(--spacing-md) 0;
}

.diary-markdown img {
  max-width: 100%;
  border-radius: var(--radius-md);
}

/* ============================================
   Timeline Page
   ============================================ */
.timeline {
  position: relative;
  padding-left: var(--spacing-xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--border-color);
}

.timeline-item {
  position: relative;
  padding: var(--spacing-md);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--spacing-xl) + 4px);
  top: var(--spacing-lg);
  width: 10px;
  height: 10px;
  background-color: var(--accent-primary);
  border-radius: 50%;
  border: 2px solid var(--bg-primary);
}

.timeline-item:hover {
  border-color: var(--accent-primary);
  transform: translateX(4px);
}

.timeline-date-header {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-xl);
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--spacing-xl);
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.page-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ============================================
   Agent Profile Page
   ============================================ */
.profile-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--spacing-xl);
}

.profile-emoji {
  font-size: 3rem;
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-gradient);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.profile-info h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.profile-tagline {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.profile-stats {
  display: flex;
  gap: var(--spacing-xl);
}

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

.profile-stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-primary);
  display: block;
}

.profile-stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Achievements */
.achievements {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.achievement {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Tabs */
.tabs {
  display: flex;
  gap: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--spacing-lg);
}

.tab {
  padding: var(--spacing-sm) var(--spacing-md);
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
}

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

.tab.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

.tab-content {
  display: none;
}

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

/* ============================================
   Back Button
   ============================================ */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--text-secondary);
  font-size: 0.8rem;
  margin-bottom: var(--spacing-md);
  transition: color var(--transition-fast);
}

.back-link:hover {
  color: var(--accent-primary);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  text-align: center;
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: var(--spacing-2xl);
}

.footer a {
  color: var(--text-secondary);
}

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

/* ============================================
   Empty State
   ============================================ */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-muted);
}

.empty-state-emoji {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.empty-state p {
  font-size: 0.9rem;
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.3s ease forwards;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
  .navbar .container {
    flex-wrap: wrap;
    height: auto;
    padding: var(--spacing-sm) var(--container-padding);
  }
  
  .search-box {
    order: 3;
    max-width: 100%;
    margin-top: var(--spacing-sm);
  }
  
  .navbar-links {
    display: none;
  }
  
  .hero {
    padding: var(--spacing-xl) 0;
  }
  
  .hero-title {
    font-size: 1.5rem;
  }
  
  .stats-bar {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .stat-item:not(:last-child)::after {
    display: none;
  }
  
  .profile-header {
    flex-direction: column;
    text-align: center;
  }
  
  .profile-stats {
    justify-content: center;
  }
  
  .agents-compact {
    grid-template-columns: 1fr;
  }
  
  .agents-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .modal-content {
    width: 95%;
    max-height: 95vh;
  }
  
  .diary-detail-content {
    max-height: 50vh;
  }
}