/* Zotero MCP Documentation - Modern Design System */

:root {
  /* Core brand colors - Calm Zotero Red */
  --color-primary: #b91c1c;
  --color-primary-dark: #991b1b;
  --color-primary-light: #dc2626;
  --color-secondary: #7f1d1d;
  --color-accent: #be123c;

  /* Semantic colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;

  /* Neutral palette */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-gray-950: #030712;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  --gradient-dark: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
  --gradient-mesh: radial-gradient(at 40% 20%, hsla(0, 72%, 42%, 0.06) 0px, transparent 50%),
                   radial-gradient(at 80% 0%, hsla(340, 82%, 40%, 0.04) 0px, transparent 50%),
                   radial-gradient(at 0% 50%, hsla(0, 72%, 50%, 0.04) 0px, transparent 50%);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-glow: 0 0 40px -10px var(--color-primary);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-gray-700);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-gray-900);
}

h1 { font-size: 3rem; letter-spacing: -0.025em; }
h2 { font-size: 2.25rem; letter-spacing: -0.025em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: var(--spacing-md);
}

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

a:hover {
  color: var(--color-primary-dark);
}

/* Navigation */
.navbar {
  background: rgba(255, 255, 255, 0.8) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-gray-200);
  padding: var(--spacing-md) 0;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-gray-900) !important;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.navbar-brand img {
  height: 32px;
}

.navbar-dark .navbar-nav .nav-link {
  color: var(--color-gray-600);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link.active {
  color: var(--color-primary);
  background: var(--color-gray-100);
}

.navbar-dark .navbar-toggler {
  border: none;
  padding: var(--spacing-sm);
}

.navbar-dark .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 6rem;
  background: var(--gradient-mesh), var(--color-gray-50);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, var(--color-primary-light) 0%, transparent 70%);
  opacity: 0.1;
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(-10%, 10%) rotate(180deg); }
}

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

.hero-section h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-lg);
}

.hero-section .lead {
  font-size: 1.25rem;
  color: var(--color-gray-600);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-2xl);
}

.hero-badges img {
  height: 32px;
  border-radius: var(--radius-sm);
  transition: transform var(--transition-fast);
}

.hero-badges a:hover img {
  transform: translateY(-2px);
}

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

/* Buttons */
.btn {
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.btn-primary {
  background: var(--gradient-primary);
  border: none;
  color: var(--color-white);
  box-shadow: var(--shadow-md), 0 4px 15px -3px rgba(185, 28, 28, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 8px 25px -5px rgba(185, 28, 28, 0.45);
  color: var(--color-white);
}

.btn-outline-secondary {
  background: var(--color-white);
  border: 2px solid var(--color-gray-300);
  color: var(--color-gray-700);
}

.btn-outline-secondary:hover {
  background: var(--color-gray-100);
  border-color: var(--color-gray-400);
  color: var(--color-gray-800);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

/* Sections */
section {
  padding: var(--spacing-4xl) 0;
}

section h2 {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  position: relative;
}

section h2::after {
  content: '';
  position: absolute;
  bottom: -0.75rem;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.section-subtitle {
  text-align: center;
  color: var(--color-gray-500);
  max-width: 700px;
  margin: -2rem auto 3rem;
}

/* Cards */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-gray-300);
}

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

.card-header {
  padding: var(--spacing-lg) var(--spacing-xl);
  background: var(--color-gray-50);
  border-bottom: 1px solid var(--color-gray-200);
}

.card-header.bg-primary {
  background: var(--gradient-primary) !important;
  border-bottom: none;
}

/* Feature Cards */
.feature-card {
  text-align: center;
  padding: var(--spacing-2xl);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(185, 28, 28, 0.08) 0%, rgba(190, 18, 60, 0.08) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
  font-size: 1.5rem;
  color: var(--color-primary);
  transition: all var(--transition-base);
}

.card:hover .feature-icon {
  background: var(--gradient-primary);
  color: var(--color-white);
  transform: scale(1.1);
}

.feature-card h5 {
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--color-gray-600);
  margin-bottom: 0;
}

/* Feature Highlight (Large cards) */
.feature-highlight {
  background: var(--gradient-mesh), var(--color-gray-50);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-3xl);
  margin-bottom: var(--spacing-xl);
}

.feature-highlight h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.feature-highlight .badge {
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
}

/* Code Blocks */
.code-block,
div.code-block,
.card .code-block,
.card-body .code-block {
  background: #1e1e2e !important;
  border-radius: var(--radius-lg) !important;
  padding: 1.5rem !important;
  padding-top: 2.5rem !important;
  margin: 1rem 0 !important;
  position: relative !important;
  overflow: hidden !important;
  border: none !important;
}

.code-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
}

.code-block pre,
.code-block pre code {
  margin: 0 !important;
  padding: 0 !important;
  overflow-x: auto;
  background: transparent !important;
  border: none !important;
}

.code-block code,
.code-block pre code {
  font-family: 'JetBrains Mono', 'Fira Code', Consolas, monospace !important;
  font-size: 0.875rem !important;
  color: #e2e8f0 !important;
  line-height: 1.7 !important;
  display: block !important;
  background: transparent !important;
  padding: 0 !important;
}

.code-block .comment {
  color: #64748b !important;
}

.code-block .string {
  color: #86efac !important;
}

.code-block .keyword {
  color: #7dd3fc !important;
}

/* Copy button for code blocks */
.code-block .copy-btn {
  position: absolute !important;
  top: 8px !important;
  right: 8px !important;
  background: rgba(255, 255, 255, 0.1) !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  color: #94a3b8 !important;
  padding: 6px 12px !important;
  border-radius: 6px !important;
  font-size: 0.75rem !important;
  font-family: var(--font-sans) !important;
  cursor: pointer !important;
  transition: all 0.15s ease !important;
  display: flex !important;
  align-items: center !important;
  gap: 6px !important;
  z-index: 10 !important;
}

.code-block .copy-btn:hover {
  background: rgba(255, 255, 255, 0.2) !important;
  color: #fff !important;
}

.code-block .copy-btn.copied {
  background: #10b981 !important;
  border-color: #10b981 !important;
  color: #fff !important;
}

.code-block .copy-btn i {
  font-size: 0.8rem !important;
}

/* Inline code (not in code blocks) */
:not(.code-block) > code,
p code,
li code,
td code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: #fef2f2 !important;
  color: #991b1b !important;
  padding: 0.125rem 0.5rem;
  border-radius: 4px;
}

/* Badges */
.badge {
  font-weight: 600;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-full);
}

.badge-new {
  background: linear-gradient(135deg, var(--color-success) 0%, #059669 100%);
  color: var(--color-white);
}

.badge-beta {
  background: linear-gradient(135deg, var(--color-warning) 0%, #d97706 100%);
  color: var(--color-white);
}

.badge-pro {
  background: var(--gradient-primary);
  color: var(--color-white);
}

/* Accordion */
.accordion {
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.accordion-item {
  border: none;
  border-bottom: 1px solid var(--color-gray-200);
}

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

.accordion-button {
  font-weight: 600;
  padding: var(--spacing-lg) var(--spacing-xl);
  background: var(--color-white);
  color: var(--color-gray-800);
}

.accordion-button:not(.collapsed) {
  background: var(--color-gray-50);
  color: var(--color-primary);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: none;
  border-color: var(--color-primary);
}

.accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23b91c1c'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.accordion-body {
  padding: var(--spacing-lg) var(--spacing-xl);
  color: var(--color-gray-600);
}

/* Alerts */
.alert {
  border: none;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

.alert-info {
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-info);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  color: #b45309;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  color: #047857;
}

/* List Group */
.list-group {
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.list-group-item {
  border: none;
  border-bottom: 1px solid var(--color-gray-100);
  padding: var(--spacing-md) var(--spacing-lg);
  transition: all var(--transition-fast);
}

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

.list-group-item:hover {
  background: var(--color-gray-50);
}

.list-group-item-action {
  color: var(--color-gray-700);
}

.list-group-item-action:hover,
.list-group-item-action.active {
  color: var(--color-primary);
  background: rgba(185, 28, 28, 0.05);
}

/* Tables */
.table {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table th {
  background: var(--color-gray-50);
  font-weight: 600;
  color: var(--color-gray-700);
  border-bottom: 2px solid var(--color-gray-200);
}

.table td {
  color: var(--color-gray-600);
  vertical-align: middle;
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: var(--color-gray-50);
}

/* Sticky sidebar */
.sticky-top {
  top: 100px;
}

/* Footer */
footer {
  background: var(--gradient-dark);
  color: var(--color-gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

footer a {
  color: var(--color-gray-300);
  transition: color var(--transition-fast);
}

footer a:hover {
  color: var(--color-white);
}

.footer-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  justify-content: center;
  margin-bottom: var(--spacing-xl);
}

.footer-links a {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Utility classes */
.bg-light {
  background-color: var(--color-gray-50) !important;
}

.bg-gradient-mesh {
  background: var(--gradient-mesh), var(--color-gray-50);
}

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.border-gradient {
  border: 2px solid transparent;
  background: linear-gradient(var(--color-white), var(--color-white)) padding-box,
              var(--gradient-primary) border-box;
}

/* Client logos grid */
.client-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-xl);
  align-items: center;
  justify-items: center;
  max-width: 800px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .client-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .client-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.client-item {
  padding: var(--spacing-lg);
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--color-gray-600);
  min-width: 120px;
}

.client-item:hover {
  background: var(--color-white);
  box-shadow: var(--shadow-lg);
  color: var(--color-primary);
  transform: translateY(-4px);
}

.client-item .client-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  transition: transform var(--transition-fast);
}

.client-item .client-logo-svg {
  width: 48px;
  height: 48px;
  transition: transform var(--transition-fast);
}

.client-item:hover .client-logo,
.client-item:hover .client-logo-svg {
  transform: scale(1.1);
}

.client-item span {
  font-size: 0.875rem;
  font-weight: 500;
  text-align: center;
}

/* Stats section */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  text-align: center;
}

.stat-item h3 {
  font-size: 3rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

.stat-item p {
  color: var(--color-gray-500);
  margin: 0;
}

/* Tool cards in API page */
.tool-card {
  border-left: 4px solid var(--color-primary);
}

.tool-card .card-header {
  background: transparent;
  border-bottom: 1px solid var(--color-gray-200);
}

.tool-card .card-header h3 {
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 1rem;
}

/* Responsive */
@media (max-width: 992px) {
  .hero-section {
    min-height: auto;
    padding: 7rem 0 4rem;
  }

  .hero-section h1 {
    font-size: 2.5rem;
  }

  section {
    padding: var(--spacing-3xl) 0;
  }

  .navbar {
    background: rgba(255, 255, 255, 0.95) !important;
  }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }

  .hero-section {
    padding: 6rem 0 3rem;
    text-align: center;
  }

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

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

  .feature-highlight {
    padding: var(--spacing-xl);
  }

  .code-block {
    padding: var(--spacing-md);
  }

  .footer-links {
    flex-direction: column;
    align-items: center;
  }
}

/* Animation utilities */
.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

.animate-slide-up {
  animation: slideUp 0.6s ease-out;
}

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

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

/* Scroll animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: var(--color-gray-950);
  }
}