/* ── OpenRappter v1.9.1 — Shared Styles ── */

:root {
  --green: #10b981;
  --green-bright: #34d399;
  --green-dark: #059669;
  --purple: #8b5cf6;
  --blue: #3b82f6;
  --orange: #f97316;
  --red: #ef4444;
  --bg: #000000;
  --bg-card: #0a0a0a;
  --bg-elevated: #141414;
  --bg-hover: #1a1a1a;
  --text: #ffffff;
  --text-secondary: #e5e5e5;
  --text-muted: #737373;
  --border: #262626;
  --border-light: #404040;
}

/* ── Reset & Base ── */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--green); }

/* ── Navbar ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-badge {
  font-size: 0.65rem;
  padding: 0.2rem 0.5rem;
  background: var(--green);
  color: black;
  border-radius: 4px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--green); }

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem;
  line-height: 1;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--green);
  color: black;
}

.btn-primary:hover {
  background: var(--green-bright);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1rem;
  border-radius: 10px;
}

/* ── Typography ── */
.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--green);
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 4rem;
}

.highlight {
  background: linear-gradient(135deg, var(--green) 0%, var(--green-bright) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Hero (shared base) ── */
.hero {
  padding: 10rem 2rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(16, 185, 129, 0.15), transparent),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139, 92, 246, 0.1), transparent);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  position: relative;
  z-index: 1;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 100px;
  font-size: 0.875rem;
  color: var(--green-bright);
  margin-bottom: 2rem;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-cta {
  display: flex;
  gap: 1rem;
  margin-bottom: 4rem;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  max-width: 600px;
}

.stat { display: flex; flex-direction: column; }
.stat-value { font-size: 2rem; font-weight: 800; color: var(--green); }
.stat-label { font-size: 0.875rem; color: var(--text-muted); }

/* ── Feature Cards ── */
.features { padding: 8rem 2rem; }
.features-container { max-width: 1200px; margin: 0 auto; }
.features-header { text-align: center; margin-bottom: 4rem; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s;
}

.feature-card:hover {
  border-color: var(--green);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -20px rgba(16, 185, 129, 0.2);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(16, 185, 129, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ── Agent Showcase Grid ── */
.agent-showcase { padding: 8rem 2rem; }
.agent-showcase-container { max-width: 1200px; margin: 0 auto; }

.agent-group-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  margin-top: 2rem;
}

.agent-group-title.core { color: var(--green); }
.agent-group-title.intelligence { color: var(--purple); }
.agent-group-title.communication { color: var(--blue); }
.agent-group-title.automation { color: var(--orange); }

.agent-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.agent-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  transition: border-color 0.2s;
}

.agent-card:hover { border-color: var(--border-light); }

.agent-card-icon {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.agent-card h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.agent-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ── Comparison Table ── */
.comparison {
  padding: 8rem 2rem;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.comparison-container { max-width: 1000px; margin: 0 auto; }

.comparison-table { width: 100%; border-collapse: collapse; }

.comparison-table th,
.comparison-table td {
  padding: 1.25rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.comparison-table th {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.comparison-table th:not(:first-child),
.comparison-table td:not(:first-child) { text-align: center; }

.comparison-table tr:hover { background: var(--bg-hover); }
.comparison-table .feature { font-weight: 500; }

.check { color: var(--green); font-size: 1.25rem; }
.cross { color: var(--red); font-size: 1.25rem; }
.partial { color: var(--orange); font-size: 0.875rem; }
.highlight-col { background: rgba(16, 185, 129, 0.05); }

/* ── Code Blocks ── */
pre {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  line-height: 1.7;
  margin: 1rem 0;
  position: relative;
}

code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85em;
}

:not(pre) > code {
  background: var(--bg-elevated);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* Syntax highlight classes */
.cmd { color: var(--green); }
.comment, .cm { color: var(--text-muted); font-style: italic; }
.str { color: var(--green-bright); }
.kw { color: var(--purple); }
.fn { color: var(--blue); }
.val, .num { color: var(--orange); }
.typ { color: var(--green); }
.op { color: var(--text-muted); }

/* Copy button on pre blocks */
.copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s;
}

pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover { color: var(--text); border-color: var(--border-light); }

/* ── Code Tabs ── */
.code-tabs {
  margin: 1.5rem 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.code-tabs-header {
  display: flex;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

.code-tab-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.code-tab-btn:hover { color: var(--text); background: var(--bg-hover); }
.code-tab-btn.active { color: var(--green); border-bottom-color: var(--green); }

.code-tab-content {
  display: none;
  padding: 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  line-height: 1.7;
}

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

.code-tab-content pre {
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
}

/* ── Tables (docs) ── */
.doc-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

.doc-table th,
.doc-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.doc-table th {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.doc-table code {
  font-size: 0.8rem;
}

/* ── Alert / Info Boxes ── */
.info-box {
  background: rgba(16, 185, 129, 0.05);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-left: 4px solid var(--green);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.warning-box {
  background: rgba(239, 68, 68, 0.05);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-left: 4px solid var(--red);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ── Terminal Demo ── */
.terminal-section { padding: 0 2rem 8rem; position: relative; }
.terminal-container { max-width: 900px; margin: 0 auto; }

.terminal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.05),
    0 20px 50px -10px rgba(0,0,0,0.5),
    0 0 100px -20px rgba(16, 185, 129, 0.2);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 1rem 1.25rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

.terminal-dot { width: 12px; height: 12px; border-radius: 50%; }
.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #febc2e; }
.terminal-dot.green { background: #28c840; }

.terminal-title {
  flex: 1;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: 'JetBrains Mono', monospace;
}

.terminal-body {
  padding: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  line-height: 1.8;
  min-height: 300px;
}

.terminal-line { display: flex; align-items: flex-start; margin-bottom: 0.25rem; }
.terminal-prompt { color: var(--green); margin-right: 0.75rem; user-select: none; }
.terminal-command { color: var(--text); }
.terminal-output { color: var(--text-muted); padding-left: 1.5rem; }
.terminal-success { color: var(--green); }
.terminal-comment { color: var(--text-muted); font-style: italic; }
.terminal-highlight { color: var(--orange); }
.terminal-dim { opacity: 0.5; }

/* ── Docs Layout (sidebar) ── */
.docs-layout {
  display: flex;
  margin-top: 73px;
  min-height: calc(100vh - 73px);
}

.sidebar {
  width: 260px;
  min-width: 260px;
  position: fixed;
  top: 73px;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  border-right: 1px solid var(--border);
  padding: 2rem 0;
  background: var(--bg);
  z-index: 100;
}

.sidebar-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 0 1.5rem;
  margin-bottom: 0.75rem;
  margin-top: 1.5rem;
  font-weight: 700;
}

.sidebar-title:first-child { margin-top: 0; }

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

.sidebar-nav li a {
  display: block;
  padding: 0.5rem 1.5rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: all 0.2s;
}

.sidebar-nav li a:hover {
  color: var(--text);
  background: var(--bg-hover);
}

.sidebar-nav li a.active {
  color: var(--green);
  border-left-color: var(--green);
  background: rgba(16, 185, 129, 0.05);
}

.docs-content {
  flex: 1;
  margin-left: 260px;
  padding: 3rem 4rem;
  max-width: calc(100% - 260px);
}

.doc-section {
  margin-bottom: 4rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

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

.doc-section h2 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.doc-section h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
}

.doc-section h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
  color: var(--text-secondary);
}

.doc-section p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 0.95rem;
  line-height: 1.7;
}

.doc-section ul, .doc-section ol {
  margin: 0.75rem 0 1rem 1.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.doc-section li { margin-bottom: 0.4rem; line-height: 1.6; }

/* ── Changelog Timeline ── */
.timeline-section {
  padding: 4rem 2rem 6rem;
  max-width: 1100px;
  margin: 0 auto;
}

.timeline { position: relative; }

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--green), var(--green-dark), transparent);
  transform: translateX(-1px);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 3rem 4rem;
}

.timeline-item:nth-child(odd) { left: 0; padding-right: 3rem; padding-left: 0; }
.timeline-item:nth-child(even) { left: 50%; padding-left: 3rem; padding-right: 0; }

.timeline-dot {
  position: absolute;
  top: 0.5rem;
  width: 16px;
  height: 16px;
  background: var(--green);
  border: 3px solid var(--bg);
  border-radius: 50%;
  z-index: 2;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.3);
}

.timeline-item:nth-child(odd) .timeline-dot { right: -8px; }
.timeline-item:nth-child(even) .timeline-dot { left: -8px; }

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: border-color 0.3s, transform 0.3s;
}

.timeline-card:hover { border-color: var(--border-light); transform: translateY(-2px); }

.version-badge {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.25rem;
  font-weight: 700;
  padding: 0.4rem 1rem;
  background: rgba(16, 185, 129, 0.15);
  color: var(--green-bright);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 8px;
  margin-bottom: 0.5rem;
}

.version-date {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
}

.change-group { margin-bottom: 1.25rem; }
.change-group:last-child { margin-bottom: 0; }

.change-group-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}

.change-group-title.added { color: var(--green-bright); }
.change-group-title.changed { color: var(--blue); }
.change-group-title.technical { color: var(--purple); }

.change-icon { font-size: 0.9rem; line-height: 1; }

.change-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.change-list li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.5;
}

.change-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--border-light);
}

.change-list.added li::before { background: rgba(16, 185, 129, 0.5); }
.change-list.changed li::before { background: rgba(59, 130, 246, 0.5); }
.change-list.technical li::before { background: rgba(139, 92, 246, 0.5); }

/* ── Tutorial Progress Nav ── */
.progress-nav {
  position: sticky;
  top: 6rem;
  width: 160px;
  flex-shrink: 0;
  align-self: flex-start;
}

.progress-nav ol {
  list-style: none;
  border-left: 2px solid var(--border);
  padding-left: 1rem;
}

.progress-nav li {
  padding: 0.4rem 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.progress-nav li a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.progress-nav li a:hover { color: var(--text); }

/* ── Tutorial Steps ── */
.step {
  margin-bottom: 4rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.step:last-child { border-bottom: none; }

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--green);
  color: black;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 50%;
  margin-bottom: 0.75rem;
}

.step h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.step p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.7;
}

/* ── RappterHub / Teach Section ── */
.rappterhub {
  padding: 8rem 2rem;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-card) 50%, var(--bg) 100%);
  border-top: 1px solid var(--border);
}

.rappterhub-container {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.rappterhub-content h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.rappterhub-content p {
  color: var(--text-muted);
  font-size: 1.125rem;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.rappterhub-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.rappterhub-feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
}

.rappterhub-feature-check {
  width: 20px;
  height: 20px;
  background: var(--green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: black;
  flex-shrink: 0;
}

.rappterhub-demo {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  line-height: 2;
}

.demo-comment { color: var(--text-muted); }
.demo-cmd { color: var(--green); }
.demo-output { color: var(--text-muted); font-size: 0.8rem; }

/* ── CTA Section ── */
.cta {
  padding: 8rem 2rem;
  text-align: center;
  position: relative;
}

.cta-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse 60% 40% at 50% 100%, rgba(16, 185, 129, 0.15), transparent);
  pointer-events: none;
}

.cta-container {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta h2 {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.cta p {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-note {
  margin-top: 2rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ── Architecture Diagrams ── */
.arch-diagram {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  margin: 2rem 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
  color: var(--text-secondary);
}

.arch-box {
  display: inline-block;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1.25rem;
  margin: 0.5rem;
  font-size: 0.85rem;
}

.arch-box.green { border-color: var(--green); color: var(--green); }
.arch-box.purple { border-color: var(--purple); color: var(--purple); }
.arch-box.blue { border-color: var(--blue); color: var(--blue); }

/* ── Footer ── */
footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links { display: flex; gap: 2rem; }

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--text); }
.footer-copy { color: var(--text-muted); font-size: 0.875rem; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .agent-grid { grid-template-columns: repeat(2, 1fr); }
  .rappterhub-container { grid-template-columns: 1fr; }
  .docs-content { padding: 2rem; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
    gap: 0.5rem;
  }
  .nav-links.open a { padding: 0.5rem 0; }
  .mobile-menu-btn { display: block; }

  .hero h1 { font-size: 2.5rem; }
  .hero-stats { flex-direction: column; gap: 1.5rem; }
  .features-grid { grid-template-columns: 1fr; }
  .agent-grid { grid-template-columns: repeat(2, 1fr); }
  .comparison-table { font-size: 0.875rem; }
  .comparison-table th, .comparison-table td { padding: 1rem; }

  /* Sidebar collapse */
  .sidebar {
    display: none;
    position: fixed;
    width: 100%;
    top: 73px;
    z-index: 200;
  }
  .sidebar.open { display: block; }
  .docs-content { margin-left: 0; max-width: 100%; padding: 2rem 1rem; }

  /* Timeline single column */
  .timeline::before { left: 20px; }
  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: 100%;
    left: 0;
    padding-left: 3.5rem;
    padding-right: 0;
  }
  .timeline-item:nth-child(odd) .timeline-dot,
  .timeline-item:nth-child(even) .timeline-dot { left: 12px; right: auto; }
  .timeline-card { padding: 1.5rem; }

  .footer-container { flex-direction: column; gap: 1rem; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
  .agent-grid { grid-template-columns: 1fr; }
  .hero { padding: 7rem 1rem 3rem; }
  .hero h1 { font-size: 2rem; }
  .section-title { font-size: 1.75rem; }
}