/* ========================================
   Analogy Landing Page - Design System
   复用官网设计系统
   ======================================== */

/* CSS Variables - Design Tokens */
:root {
  /* Colors */
  --color-bg: #FFF;
  --color-text: #0A0A0A;
  --color-text-secondary: #444444;
  --color-accent: #B80000;
  --color-accent-hover: #8B0000;
  --color-border: #E8E8E8;
  --color-card-bg: #FFFFFF;
  --color-success: #10B981;
  --color-warning: #F59E0B;

  /* Typography - Outfit + Inter + Noto Sans SC */
  --font-heading: "Outfit", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;

  /* Font Sizes */
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 18px;
  --text-xl: 24px;
  --text-2xl: 32px;
  --text-3xl: 48px;
  --text-4xl: 64px;

  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-bold: 700;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ========================================
   SVG Noise Overlay
   ======================================== */
.noise-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.06;
}

.noise-overlay svg {
  width: 100%;
  height: 100%;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-bold);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

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

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

/* ========================================
   Animation Utilities
   ======================================== */
.stagger-1, .stagger-2, .stagger-3, .stagger-4,
.scroll-reveal {
  opacity: 0;
  transform: translateY(24px);
}

.stagger-1 { animation: staggerFadeIn 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards; animation-delay: 0ms; }
.stagger-2 { animation: staggerFadeIn 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards; animation-delay: 150ms; }
.stagger-3 { animation: staggerFadeIn 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards; animation-delay: 300ms; }
.stagger-4 { animation: staggerFadeIn 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards; animation-delay: 450ms; }

@keyframes staggerFadeIn {
  0% {
    opacity: 0;
    transform: translateY(24px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.scroll-reveal {
  transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1),
              transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Layout
   ======================================== */
.landing-page {
  background-color: var(--color-bg);
  position: relative;
}

.content-container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ========================================
   Header
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) 0;
  transition: all var(--transition-base);
}

.header-content {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.logo-container:hover {
  opacity: 0.8;
}

.logo-container img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

/* Navigation */
.nav-pill-list {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

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

.tab-item {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  font-weight: var(--font-normal);
  color: var(--color-text-secondary);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-item:hover {
  color: var(--color-text);
  background-color: rgba(0, 0, 0, 0.04);
}

.tab-item.active {
  color: var(--color-text);
  font-weight: var(--font-medium);
}

/* Header CTA Button */
.btn-primary-small {
  display: inline-flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-text);
  color: var(--color-bg);
  border-radius: 8px;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: all var(--transition-bounce);
}

.btn-primary-small:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
  color: var(--color-bg);
}

/* ========================================
   Hero Section
   ======================================== */
.hero-section {
  position: relative;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 140px var(--space-md) var(--space-2xl);
  text-align: center;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(184, 0, 0, 0.02) 0%, rgba(255, 255, 255, 0) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: var(--space-xl);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(36px, 6vw, 56px);
  font-weight: var(--font-bold);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: var(--font-normal);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* ========================================
   Search Box
   ======================================== */
.search-container {
  width: 100%;
  max-width: 700px;
  position: relative;
  z-index: 2;
}

.search-box {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-card-bg);
  border: 2px solid var(--color-border);
  border-radius: 16px;
  padding: var(--space-sm);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
}

.search-box:focus-within {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-xl), 0 0 0 4px rgba(184, 0, 0, 0.1);
}

.search-input {
  flex: 1;
  border: none;
  outline: none;
  font-family: var(--font-body);
  font-size: var(--text-base);
  padding: var(--space-md);
  background: transparent;
  color: var(--color-text);
}

.search-input::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.6;
}

.search-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  background-color: var(--color-accent);
  color: white;
  border: none;
  border-radius: 12px;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: all var(--transition-bounce);
}

.search-btn:hover {
  background-color: var(--color-accent-hover);
  transform: scale(1.02);
}

.search-btn:active {
  transform: scale(0.98);
}

.search-icon {
  width: 20px;
  height: 20px;
}

.search-hint {
  margin-top: var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-align: center;
}

.search-hint strong {
  color: var(--color-accent);
  font-weight: var(--font-medium);
}

/* ========================================
   Loading State
   ======================================== */
.loading-state {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  padding: var(--space-2xl);
  border-radius: 16px;
  box-shadow: var(--shadow-xl);
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-state p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

/* ========================================
   Models Gallery Section
   ======================================== */
.models-gallery-section {
  padding: var(--space-2xl) 0;
  background-color: var(--color-bg);
}

.gallery-header {
  width: 100%;
  text-align: center;
  margin-bottom: var(--space-xl);
}

.gallery-title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.gallery-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

/* 3x3 Grid Layout */
.models-grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

/* Model Card */
.model-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-bounce);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  min-height: 200px;
  animation: fadeInUp 0.4s ease-out forwards;
}

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

.model-card-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-text);
  margin-bottom: var(--space-md);
  line-height: 1.3;
}

.model-card-content {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex: 1;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 6;
  -webkit-box-orient: vertical;
}

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

.pagination-btn {
  padding: var(--space-sm) var(--space-md);
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: var(--text-sm);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

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

.pagination-info {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0 var(--space-md);
}

/* Responsive for Models Gallery */
@media (max-width: 768px) {
  .models-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .models-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================================
   Results Section
   ======================================== */
.results-section {
  padding: var(--space-2xl) 0;
  background-color: var(--color-bg);
}

.results-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.results-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.clear-btn {
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.clear-btn:hover {
  background-color: rgba(0, 0, 0, 0.04);
  border-color: var(--color-text-secondary);
}

.results-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* Result Card */
.result-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-bounce);
  animation: fadeInUp 0.4s ease-out forwards;
}

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

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

.result-card-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.result-card-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent) 0%, #D40000 100%);
  border-radius: 10px;
  flex-shrink: 0;
}

.result-card-icon svg {
  width: 24px;
  height: 24px;
  stroke: white;
}

.result-card-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-text);
  line-height: 1.3;
}

.result-card-content {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* Markdown content styles */
.result-card-content h1,
.result-card-content h2,
.result-card-content h3,
.result-card-content h4 {
  color: var(--color-text);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.result-card-content h1 { font-size: var(--text-xl); }
.result-card-content h2 { font-size: var(--text-lg); }
.result-card-content h3 { font-size: var(--text-base); font-weight: var(--font-bold); }

.result-card-content p {
  margin-bottom: var(--space-md);
}

.result-card-content ul,
.result-card-content ol {
  margin-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

.result-card-content li {
  margin-bottom: var(--space-xs);
}

.result-card-content code {
  background: rgba(0, 0, 0, 0.04);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.9em;
}

.result-card-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-md);
  margin: var(--space-md) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

/* ========================================
   Features Section
   ======================================== */
.features-section {
  padding: var(--space-3xl) 0;
  background-color: var(--color-bg);
}

.section-header {
  width: 100%;
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-heading {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.section-subheading {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: var(--font-normal);
  color: var(--color-text-secondary);
}

.features-grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-xl);
}

.feature-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-bounce);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(184, 0, 0, 0.1) 0%, rgba(184, 0, 0, 0.05) 100%);
  border-radius: 14px;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-accent);
}

.feature-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.feature-desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
  padding: var(--space-3xl) 0;
  background: linear-gradient(180deg, rgba(184, 0, 0, 0.03) 0%, rgba(255, 255, 255, 0) 100%);
}

.cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta-title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.cta-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.cta-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  background-color: var(--color-text);
  color: var(--color-bg);
  border: none;
  border-radius: 12px;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: all var(--transition-bounce);
  text-decoration: none;
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
  color: var(--color-bg);
}

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

.btn-secondary {
  display: inline-flex;
  align-items: center;
  padding: var(--space-md) var(--space-xl);
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border);
  border-radius: 12px;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: all var(--transition-bounce);
  text-decoration: none;
}

.btn-secondary:hover {
  border-color: var(--color-text);
  background-color: rgba(0, 0, 0, 0.02);
  color: var(--color-text);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
}

.footer-content {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-2xl);
}

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

.footer-logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.footer-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

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

.footer-column-title {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.footer-bottom {
  width: 90%;
  max-width: 1200px;
  margin: var(--space-2xl) auto 0;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-bottom p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* ========================================
   Modal
   ======================================== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.modal-content {
  position: relative;
  background: var(--color-card-bg);
  border-radius: 20px;
  padding: var(--space-2xl);
  max-width: 420px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-xl);
  animation: modalIn 0.3s ease-out;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(184, 0, 0, 0.1);
  border-radius: 50%;
}

.modal-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--color-accent);
}

.modal-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.modal-desc {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.modal-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

.modal-buttons .btn-primary {
  flex: 1;
}

.modal-buttons .btn-secondary {
  flex: 1;
}

/* ========================================
   Detail Modal (Large Modal for Model Details)
   ======================================== */
.detail-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.detail-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
}

.detail-modal-content {
  position: relative;
  background: var(--color-card-bg);
  border-radius: 24px;
  max-width: 900px;
  width: 90%;
  max-height: 85vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  animation: detailModalIn 0.3s ease-out;
}

@keyframes detailModalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(30px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.detail-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xl) var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(135deg, rgba(184, 0, 0, 0.05) 0%, rgba(184, 0, 0, 0.02) 100%);
}

.detail-modal-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
  margin: 0;
}

.detail-modal-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-secondary);
}

.detail-modal-close:hover {
  background: rgba(0, 0, 0, 0.05);
  color: var(--color-text);
}

.detail-modal-close svg {
  width: 24px;
  height: 24px;
  stroke-width: 2;
}

.detail-modal-body {
  padding: var(--space-2xl);
  overflow-y: auto;
  flex: 1;
}

/* Markdown content styles in detail modal */
.detail-modal-body h1,
.detail-modal-body h2,
.detail-modal-body h3,
.detail-modal-body h4 {
  color: var(--color-text);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-md);
}

.detail-modal-body h1 { font-size: var(--text-xl); }
.detail-modal-body h2 { font-size: var(--text-lg); }
.detail-modal-body h3 { font-size: var(--text-base); font-weight: var(--font-bold); }

.detail-modal-body p {
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.detail-modal-body ul,
.detail-modal-body ol {
  margin-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

.detail-modal-body li {
  margin-bottom: var(--space-sm);
}

.detail-modal-body strong {
  color: var(--color-text);
  font-weight: var(--font-bold);
}

.detail-modal-body code {
  background: rgba(0, 0, 0, 0.04);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.9em;
}

.detail-modal-body blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-md);
  margin: var(--space-md) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

/* ========================================
   Related Models Section
   ======================================== */
.related-models-section {
  margin-top: var(--space-2xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-border);
}

.related-models-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.related-models-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.related-models-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
  .footer-content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xl);
  }

  .footer-links {
    width: 100%;
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .header-content {
    flex-wrap: wrap;
  }

  .related-models-grid {
    grid-template-columns: 1fr;
  }

  .detail-modal-content {
    max-width: 95%;
    max-height: 90vh;
  }

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

  .nav-pill-list {
    order: 3;
    width: 100%;
    justify-content: center;
    margin-top: var(--space-sm);
  }

  .header-cta {
    order: 2;
  }

  .hero-section {
    padding: 120px var(--space-md) var(--space-xl);
    min-height: 50vh;
  }

  .hero-title {
    font-size: 32px;
  }

  .search-box {
    flex-direction: column;
    padding: var(--space-md);
  }

  .search-btn {
    width: 100%;
    justify-content: center;
  }

  .section-heading {
    font-size: var(--text-2xl);
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cta-buttons .btn-primary,
  .cta-buttons .btn-secondary {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .content-container {
    width: 94%;
    padding: 0 var(--space-sm);
  }

  .hero-section {
    padding: 100px var(--space-sm) var(--space-lg);
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-subtitle {
    font-size: var(--text-base);
  }

  .result-card {
    padding: var(--space-lg);
  }

  .result-card-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .modal-content {
    padding: var(--space-xl);
  }

  .modal-buttons {
    flex-direction: column;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
}

/* ========================================
   Focus & Accessibility
   ======================================== */
*:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

::selection {
  background-color: var(--color-accent);
  color: white;
}