@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

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

:root {
  --mint: #4ecdc4;
  --mint-light: #a8edea;
  --mint-pale: #e8faf9;
  --mint-dark: #2bb5ac;
  --accent: #00b4d8;
  --accent2: #48cae4;
  --white: #ffffff;
  --bg: #f0fafa;
  --sidebar-bg: #ffffff;
  --text: #1a2e35;
  --text-secondary: #4a6670;
  --text-muted: #8aa5ad;
  --border: #d0eeec;
  --border-light: #e8f8f7;
  --code-bg: #0d1f24;
  --code-border: #1e3a42;
  --sidebar-w: 280px;
  --shadow-sm: 0 1px 3px rgba(78, 205, 196, 0.1);
  --shadow-md: 0 4px 16px rgba(78, 205, 196, 0.15);
  --shadow-lg: 0 8px 32px rgba(78, 205, 196, 0.2);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 5px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  overflow-x: hidden;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--border-light);
}

::-webkit-scrollbar-thumb {
  background: var(--mint);
  border-radius: 3px;
}

/* ===== SIDEBAR ===== */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.sidebar-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border-light);
  background: linear-gradient(135deg, var(--mint-pale) 0%, #fff 100%);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--mint-pale), #fff);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.logo-title {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}

.logo-version {
  display: block;
  font-size: 11px;
  color: var(--mint-dark);
  font-weight: 500;
  margin-top: 2px;
}

.sidebar-search {
  position: relative;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
}

.sidebar-search input {
  width: 100%;
  padding: 8px 12px 8px 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sidebar-search input:focus {
  border-color: var(--mint);
  box-shadow: 0 0 0 3px rgba(78, 205, 196, 0.15);
}

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

.search-icon {
  position: absolute;
  left: 27px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 12px 0 20px;
}

.nav-section {
  margin-bottom: 8px;
}

.nav-section-title {
  padding: 6px 20px 4px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.nav-item {
  display: block;
  padding: 7px 20px;
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all 0.18s;
  cursor: pointer;
}

.nav-item.sub {
  padding-left: 32px;
  font-size: 12.5px;
}

.nav-item:hover {
  color: var(--mint-dark);
  background: var(--mint-pale);
  border-left-color: var(--mint-light);
}

.nav-item.active {
  color: var(--mint-dark);
  background: linear-gradient(90deg, var(--mint-pale), transparent);
  border-left-color: var(--mint);
  font-weight: 600;
}

/* ===== HAMBURGER ===== */
.menu-toggle {
  display: none;
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 200;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--mint-dark);
  border-radius: 2px;
  transition: all 0.2s;
}

/* ===== MAIN CONTENT ===== */
.main-content {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  padding: 0;
}

.content-wrapper {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 40px 80px;
}

/* ===== HERO ===== */
.hero {
  background: linear-gradient(135deg, #e0f9f7 0%, #f0fafa 50%, #e8f4ff 100%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 52px 48px;
  margin-bottom: 48px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(78, 205, 196, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(0, 180, 216, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-badge {
  display: inline-block;
  padding: 4px 14px;
  background: var(--mint-pale);
  border: 1px solid var(--mint-light);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: var(--mint-dark);
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  position: relative;
}

.hero-title {
  font-size: 44px;
  font-weight: 800;
  background: linear-gradient(135deg, #2bb5ac, #00b4d8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.15;
  margin-bottom: 14px;
  position: relative;
}

.hero-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 28px;
  position: relative;
  line-height: 1.6;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 36px;
  position: relative;
}

.tag {
  padding: 5px 14px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 12.5px;
  color: var(--text-secondary);
  font-weight: 500;
}

.tag-green {
  border-color: var(--mint-light);
  color: var(--mint-dark);
  background: var(--mint-pale);
}

.tag-blue {
  border-color: #b3e5fc;
  color: #0277bd;
  background: #e1f5fe;
}

.hero-stats {
  display: flex;
  gap: 32px;
  position: relative;
}

.stat {
  text-align: center;
}

.stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--mint-dark);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

/* ===== SECTIONS ===== */
.doc-section {
  margin-bottom: 56px;
  scroll-margin-top: 24px;
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--mint), var(--accent));
  border-radius: 2px;
}

/* ===== STEPS ===== */
.steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.step:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--mint-light);
}

.step-num {
  font-size: 13px;
  font-weight: 800;
  color: var(--mint-dark);
  background: var(--mint-pale);
  border: 1px solid var(--mint-light);
  border-radius: var(--radius-xs);
  padding: 4px 10px;
  flex-shrink: 0;
  font-family: 'JetBrains Mono', monospace;
}

.step-content h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text);
}

.step-content p {
  font-size: 13.5px;
  color: var(--text-secondary);
}

/* ===== CLASS CARD ===== */
.class-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 20px;
  overflow: hidden;
  transition: box-shadow 0.2s;
  scroll-margin-top: 24px;
}

.class-card:hover {
  box-shadow: var(--shadow-md);
}

.class-card-header {
  padding: 24px 28px 20px;
  background: linear-gradient(135deg, var(--mint-pale) 0%, #fff 100%);
  border-bottom: 1px solid var(--border-light);
}

.class-badge {
  display: inline-block;
  padding: 2px 10px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 4px;
  margin-bottom: 10px;
  background: var(--mint-pale);
  color: var(--mint-dark);
  border: 1px solid var(--mint-light);
}

.class-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 6px;
}

.class-desc {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ===== CLASS SUMMARY ===== */
.class-summary {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 20px;
}

.class-summary p {
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.class-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.meta-tag {
  padding: 4px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.inspector-props {
  margin-top: 16px;
}

.inspector-props h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== API GROUP TITLE ===== */
.api-group-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin: 28px 0 12px;
  padding-left: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.api-group-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ===== API CARD ===== */
.api-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow 0.2s, border-color 0.2s, transform 0.15s;
  scroll-margin-top: 24px;
}

.api-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--mint-light);
  transform: translateY(-1px);
}

.api-card.deprecated {
  opacity: 0.75;
  border-color: #ffd6a5;
  background: #fffaf5;
}

.api-card.deprecated:hover {
  border-color: #ffb347;
}

.api-card-header {
  padding: 16px 24px 12px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(90deg, var(--mint-pale) 0%, #fff 60%);
}

.api-badges {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.api-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  flex: 1;
}

.api-signature {
  padding: 14px 24px;
  background: var(--code-bg);
  border-bottom: 1px solid var(--code-border);
  font-size: 13.5px;
  overflow-x: auto;
}

.api-signature code {
  font-family: 'JetBrains Mono', monospace;
  color: var(--mint-light);
}

.api-desc {
  padding: 14px 24px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.api-desc:last-child {
  padding-bottom: 18px;
}

/* ===== BADGES ===== */
.badge {
  display: inline-block;
  padding: 3px 9px;
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: 4px;
}

.badge-method {
  background: #e8f4ff;
  color: #1565c0;
  border: 1px solid #bbdefb;
}

.badge-static {
  background: #f3e5f5;
  color: #7b1fa2;
  border: 1px solid #e1bee7;
}

.badge-property {
  background: #e8f5e9;
  color: #2e7d32;
  border: 1px solid #c8e6c9;
}

.badge-readonly {
  background: #fce4ec;
  color: #c62828;
  border: 1px solid #ffcdd2;
}

.badge-public {
  background: #e3f2fd;
  color: #1565c0;
  border: 1px solid #bbdefb;
}

.badge-recommended {
  background: linear-gradient(90deg, var(--mint-pale), #e8f4ff);
  color: var(--mint-dark);
  border: 1px solid var(--mint-light);
}

.badge-deprecated {
  background: #fff3e0;
  color: #e65100;
  border: 1px solid #ffe0b2;
}

.badge-effects {
  background: linear-gradient(90deg, #f3e5f5, #e8f4ff);
  color: #6a1b9a;
  border: 1px solid #e1bee7;
}

.badge-bridge {
  background: #e0f2f1;
  color: #00695c;
  border: 1px solid #b2dfdb;
}

.badge-ui {
  background: #fff8e1;
  color: #f57f17;
  border: 1px solid #ffe082;
}

/* ===== TABLES ===== */
table.param-table,
table.prop-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

table.param-table {
  margin: 0 24px 14px;
  width: calc(100% - 48px);
}

table.prop-table {
  margin: 0;
}

table.param-table th,
table.param-table td,
table.prop-table th,
table.prop-table td {
  padding: 9px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

table.param-table th,
table.prop-table th {
  background: var(--bg);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  border-bottom: 1px solid var(--border);
}

table.param-table td,
table.prop-table td {
  color: var(--text-secondary);
}

table.param-table tr:last-child td,
table.prop-table tr:last-child td {
  border-bottom: none;
}

table.param-table td code,
table.prop-table td code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--mint-dark);
  border: 1px solid var(--border-light);
}

/* ===== RETURN INFO ===== */
.return-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 24px 16px;
  font-size: 13.5px;
  color: var(--text-secondary);
}

.return-label {
  padding: 3px 10px;
  background: #e8f5e9;
  color: #2e7d32;
  border: 1px solid #c8e6c9;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

.return-info code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--mint-dark);
}

/* ===== CODE BLOCKS ===== */
.code-block {
  border: 1px solid var(--code-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 20px 0;
  box-shadow: var(--shadow-sm);
}

.code-block.mini {
  margin: 0 24px 16px;
  border-radius: var(--radius-sm);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: #0b1a1f;
  border-bottom: 1px solid var(--code-border);
}

.code-lang {
  padding: 2px 8px;
  background: rgba(78, 205, 196, 0.15);
  color: var(--mint);
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
}

.code-title {
  font-size: 12px;
  color: #5a8a8a;
}

.code-block pre {
  background: var(--code-bg);
  padding: 20px 20px;
  overflow-x: auto;
}

.code-block.mini pre {
  padding: 14px 16px;
}

.code-block pre code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13.5px;
  color: #cce8e5;
  line-height: 1.75;
}

.code-block.mini pre code {
  font-size: 12.5px;
}

/* Syntax highlights */
.c-kw {
  color: #5fb4e0;
}

.c-cls {
  color: #73d4bd;
}

.c-fn {
  color: #a8edea;
}

.c-comment {
  color: #4a7a70;
  font-style: italic;
}

.c-num {
  color: #f9bc6b;
}

.c-str {
  color: #b5e8a0;
}

/* ===== INFO CALLOUT ===== */
.info-callout {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: var(--mint-pale);
  border: 1px solid var(--mint-light);
  border-left: 3px solid var(--mint);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin: 16px 0;
  font-size: 13.5px;
  color: var(--text-secondary);
}

.info-callout.mini {
  margin: 0 24px 16px;
}

.callout-icon {
  flex-shrink: 0;
  font-size: 16px;
}

.callout-text {
  flex: 1;
}

.callout-text code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  background: rgba(78, 205, 196, 0.15);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--mint-dark);
}

:not(.api-signature):not(.code-block)>code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  background: var(--mint-pale);
  color: var(--mint-dark);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--mint-light);
}

/* Inline code in prose text */
.api-desc code,
.class-desc code,
.class-summary code,
.callout-text code,
.step-content code,
.inspector-props code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  background: var(--mint-pale);
  color: var(--mint-dark);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--mint-light);
}

/* ===== ARCHITECTURE DIAGRAM ===== */
.arch-diagram {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  margin-bottom: 20px;
}

.arch-layer {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 0;
}

.arch-arrow {
  text-align: center;
  padding: 6px 0;
  color: var(--mint);
  font-size: 13px;
  font-weight: 600;
}

.arch-box {
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--border);
  line-height: 1.4;
  min-width: 180px;
}

.arch-box small {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--text-muted);
  margin-top: 4px;
}

.arch-box.highlight {
  background: linear-gradient(135deg, #e8f4ff, #f0faff);
  border-color: #90caf9;
  color: #1565c0;
}

.arch-box.primary {
  background: linear-gradient(135deg, var(--mint-pale), #fff);
  border-color: var(--mint-light);
  color: var(--mint-dark);
}

.arch-box.secondary {
  background: var(--bg);
  border-color: var(--border);
  color: var(--text-secondary);
}

.arch-box.dark {
  background: var(--code-bg);
  border-color: var(--code-border);
  color: var(--mint-light);
}

.arch-box.dark small {
  color: #4a7a70;
}

/* ===== FOOTER ===== */
.doc-footer {
  margin-top: 60px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-inner p {
  color: var(--text-muted);
  font-size: 13px;
}

.footer-sub {
  margin-top: 6px;
  font-size: 12px;
}

.footer-inner code {
  font-size: 11.5px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  }

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

  .main-content {
    margin-left: 0;
  }

  .menu-toggle {
    display: flex;
  }

  .content-wrapper {
    padding: 72px 20px 60px;
  }

  .hero {
    padding: 36px 24px;
  }

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

  .hero-stats {
    gap: 20px;
  }

  .arch-layer {
    flex-wrap: wrap;
  }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Only hero animates via CSS; other cards use JS IntersectionObserver */
.hero {
  animation: fadeInUp 0.5s ease both;
}