/* Unsaid Documentation Website Stylesheet */
:root {
  --bg-primary: #0a0b0e;
  --bg-secondary: #121319;
  --bg-tertiary: #181a23;
  --bg-card: rgba(22, 24, 34, 0.7);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(245, 158, 11, 0.3);
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent-amber: #f59e0b;
  --accent-sky: #38bdf8;
  --accent-purple: #c084fc;
  --accent-emerald: #34d399;
  --accent-rose: #fb7185;
  --code-bg: #0e0f15;
  --sidebar-width: 280px;
  --header-height: 64px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Header */
.docs-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(10, 11, 14, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-menu-btn {
  display: none;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  font-size: 1.15rem;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  padding: 0;
}

.mobile-menu-btn:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.docs-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 85;
}

.docs-backdrop.open {
  display: block;
}

.brand-logo {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.3), rgba(192, 132, 252, 0.3));
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.brand-text {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-badge {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.25);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  margin-left: 0.5rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.85rem;
  padding: 0.45rem 0.85rem 0.45rem 2.2rem;
  border-radius: 8px;
  width: 240px;
  transition: all 0.2s;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-amber);
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.15);
  width: 300px;
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.header-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: all 0.2s;
}

.header-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
}

.header-btn.primary {
  background: var(--accent-amber);
  color: #000;
  border-color: var(--accent-amber);
  font-weight: 600;
}

.header-btn.primary:hover {
  background: #fbbf24;
}

/* Layout */
.docs-layout {
  display: flex;
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}

/* Sidebar */
.docs-sidebar {
  width: var(--sidebar-width);
  position: fixed;
  top: var(--header-height);
  bottom: 0;
  left: 0;
  background: var(--bg-primary);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  padding: 1.5rem 1rem;
}

.sidebar-group {
  margin-bottom: 1.75rem;
}

.sidebar-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
  padding-left: 0.75rem;
}

.sidebar-nav {
  list-style: none;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  transition: all 0.15s;
}

.sidebar-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.sidebar-link.active {
  color: var(--accent-amber);
  background: rgba(245, 158, 11, 0.1);
  font-weight: 600;
}

.sidebar-link .icon {
  font-size: 1rem;
  opacity: 0.8;
}

/* Main Content Area */
.docs-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 3rem 4rem 6rem;
  max-width: 1040px;
}

/* Hero Section */
.hero-banner {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.08), rgba(192, 132, 252, 0.06), transparent 70%);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.5rem;
  margin-bottom: 3.5rem;
  position: relative;
  overflow: hidden;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-title span {
  background: linear-gradient(to right, #fbbf24, #f59e0b, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Sections */
.docs-section {
  margin-bottom: 4rem;
  scroll-margin-top: calc(var(--header-height) + 2rem);
}

.section-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.section-lead {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  line-height: 1.6;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  transition: all 0.2s;
  display: flex;
  flex-col: column;
}

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

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.card-icon.amber {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
}

.card-icon.sky {
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-sky);
}

.card-icon.purple {
  background: rgba(192, 132, 252, 0.12);
  color: var(--accent-purple);
}

.card-icon.emerald {
  background: rgba(52, 211, 153, 0.12);
  color: var(--accent-emerald);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Code Blocks */
.code-container {
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  margin: 1.25rem 0;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

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

pre {
  padding: 1.2rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
}

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

pre code {
  background: transparent;
  padding: 0;
}

/* Callout Alert */
.callout {
  border-left: 4px solid var(--accent-amber);
  background: rgba(245, 158, 11, 0.08);
  border-radius: 0 10px 10px 0;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

.callout.crisis {
  border-left-color: var(--accent-rose);
  background: rgba(251, 113, 133, 0.08);
}

.callout.info {
  border-left-color: var(--accent-sky);
  background: rgba(56, 189, 248, 0.08);
}

.callout-title {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.callout p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Tables */
.docs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.875rem;
}

.docs-table th,
.docs-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.docs-table th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-primary);
}

.docs-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Footer */
.docs-footer {
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .mobile-menu-btn {
    display: inline-flex;
  }

  .docs-sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: 280px;
    z-index: 90;
    transform: translateX(-100%);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 20px 0 40px rgba(0, 0, 0, 0.8);
    display: block !important;
  }

  .docs-sidebar.open {
    transform: translateX(0);
  }

  .docs-content {
    margin-left: 0;
    max-width: 100%;
    padding: 2rem 1.5rem;
  }

  .search-input {
    width: 160px;
  }

  .search-input:focus {
    width: 200px;
  }
}

@media (max-width: 640px) {
  .docs-header {
    padding: 0 1rem;
  }

  .brand-text {
    font-size: 1rem;
  }

  .brand-badge {
    display: none;
  }

  .search-input-wrap {
    display: none;
  }

  .github-btn {
    display: none;
  }

  .docs-content {
    padding: 1.5rem 1rem;
  }

  .hero-banner {
    padding: 1.5rem 1rem;
    margin-bottom: 2rem;
  }

  .hero-title {
    font-size: 1.65rem;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

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

  .hero-buttons .header-btn {
    text-align: center;
    justify-content: center;
  }

  .feature-grid,
  .modes-grid,
  .arch-diagram {
    grid-template-columns: 1fr !important;
  }

  pre {
    max-width: 100%;
    overflow-x: auto;
  }

  .docs-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .docs-footer {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}