/* ==========================================================================
   Flex — The agent-loop engine
   Dark terminal/CLI design system
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

html, body {
  margin: 0;
  padding: 0;
}

img {
  max-width: 100%;
  display: block;
}

/* --------------------------------------------------------------------------
   Design Tokens — Colors (Dark Terminal)
   -------------------------------------------------------------------------- */
:root {
  /* Surface */
  --color-canvas: #0a0a0f;
  --color-surface: #111118;
  --color-card-border: #1c1c28;

  /* Accent (amber gold) */
  --color-accent: #d4a84b;
  --color-accent-hover: #e0ba5e;
  --color-accent-pressed: #b8903a;
  --color-accent-glow: rgba(212, 168, 75, 0.2);

  /* Green terminal */
  --color-green: #4ade80;

  /* Text */
  --color-heading: #e8e4dc;
  --color-body: #a0a8b8;
  --color-muted: #585d6b;
  --color-ink: #e8e4dc;
  --color-on-primary: #0a0a0f;

  /* Borders */
  --color-hairline: #1c1c28;
  --color-fog: #2a2a35;

  /* Code blocks */
  --color-code-bg: #0d0d14;
  --color-code-border: #1a1a24;

  /* Syntax (dark theme) */
  --color-syntax-string: #4ade80;
  --color-syntax-number: #f59e0b;
  --color-syntax-key: #a78bfa;
  --color-syntax-text: #94a3b8;
  --color-syntax-teal: #6eb4bf;
  --color-syntax-red: #d07277;
  --color-syntax-rust: #b1574b;

  /* Nav */
  --color-nav-bg: rgba(10, 10, 15, 0.85);
  --color-nav-border: #1c1c28;

  /* Kbd */
  --color-kbd-bg: #16161d;
  --color-kbd-border: #2a2a35;

  /* Ghost button */
  --color-ghost-border: #2a2a35;

  /* Footer */
  --color-footer-bg: #0d0d14;
  --color-footer-border: #1c1c28;

  /* ------------------------------------------------------------------------
     Typography — Font Families
     ------------------------------------------------------------------------ */
  --font-display: "IBM Plex Serif", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* ------------------------------------------------------------------------
     Typography — Scale
     ------------------------------------------------------------------------ */
  --font-heading: 48px;
  --font-heading-weight: 340;
  --font-heading-line: 1.2;
  --font-heading-tracking: -0.96px;

  --font-heading-sm: 26px;
  --font-heading-sm-weight: 400;
  --font-heading-sm-line: 1.25;

  --font-heading-xs: 17px;
  --font-heading-xs-weight: 400;
  --font-heading-xs-line: 1.1;

  --font-body: 14px;
  --font-body-weight: 400;
  --font-body-line: 1.5;
  --font-body-tracking: -0.35px;

  --font-button: 14px;
  --font-button-weight: 400;
  --font-button-line: 1.43;
  --font-button-tracking: -0.35px;

  --font-kbd: 12px;
  --font-kbd-weight: 400;
  --font-kbd-tracking: 0.6px;

  --font-caption: 13px;
  --font-small: 12px;

  /* ------------------------------------------------------------------------
     Spacing (4px base)
     ------------------------------------------------------------------------ */
  --spacing-xs: 4px;
  --spacing-sm: 6px;
  --spacing-md: 8px;
  --spacing-base: 10px;
  --spacing-lg: 16px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;
  --spacing-section: 48px;
  --spacing-section-lg: 64px;
  --spacing-section-xl: 80px;

  /* ------------------------------------------------------------------------
     Shapes
     ------------------------------------------------------------------------ */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;

  /* ------------------------------------------------------------------------
     Shadows
     ------------------------------------------------------------------------ */
  --shadow-keycap: inset 0px -2px 0px 0px rgba(0, 0, 0, 0.3);
  --shadow-cta: 0 0 12px var(--color-accent-glow);
  --shadow-editor: 0px 10px 15px -3px rgba(0, 0, 0, 0.3), 0px 4px 6px -4px rgba(0, 0, 0, 0.2);

  /* ------------------------------------------------------------------------
     Layout
     ------------------------------------------------------------------------ */
  --max-width: 1200px;
}

/* --------------------------------------------------------------------------
   Page Background (dark canvas)
   -------------------------------------------------------------------------- */
body {
  background-color: var(--color-canvas);
  color: var(--color-body);
  font-family: var(--font-mono);
  font-size: var(--font-body);
  font-weight: var(--font-body-weight);
  line-height: var(--font-body-line);
  letter-spacing: var(--font-body-tracking);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  overflow-x: hidden;
}

/* --------------------------------------------------------------------------
   Scanline Overlay (CRT effect)
   -------------------------------------------------------------------------- */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    rgba(0, 0, 0, 0.15) 0px,
    transparent 2px
  );
  background-size: 100% 4px;
  pointer-events: none;
  z-index: 9999;
}

/* --------------------------------------------------------------------------
   Three.js Canvas Background
   -------------------------------------------------------------------------- */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   Global Typography Rules
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-heading);
  margin: 0;
}

h1 {
  font-size: var(--font-heading);
  font-weight: var(--font-heading-weight);
  line-height: var(--font-heading-line);
  letter-spacing: var(--font-heading-tracking);
}

h2 {
  font-size: var(--font-heading-sm);
  font-weight: var(--font-heading-sm-weight);
  line-height: var(--font-heading-sm-line);
}

h3 {
  font-size: var(--font-heading-xs);
  font-weight: var(--font-heading-xs-weight);
  line-height: var(--font-heading-xs-line);
}

p {
  margin: 0 0 var(--spacing-lg) 0;
}

p:last-child {
  margin-bottom: 0;
}

/* Links */
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

a:hover {
  text-decoration: underline;
}

/* Selection */
::selection {
  background-color: var(--color-accent);
  color: var(--color-canvas);
}

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

/* --------------------------------------------------------------------------
   Container
   -------------------------------------------------------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   GSAP Animation Support Classes
   -------------------------------------------------------------------------- */
/* .reveal and .scroll-reveal are JS hooks only.
   No default opacity:0 — content stays visible if JS fails.
   GSAP sets the initial state programmatically via .from(). */

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-nav-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-nav-border);
  height: 60px;
  display: flex;
  align-items: center;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 400;
  color: var(--color-accent);
  text-decoration: none;
}

.nav-brand:hover {
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: var(--font-button);
  font-weight: var(--font-button-weight);
  line-height: var(--font-button-line);
  letter-spacing: var(--font-button-tracking);
  color: var(--color-body);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-links a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  padding: var(--spacing-section-xl) 0 var(--spacing-section-lg) 0;
  text-align: center;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--font-heading);
  font-weight: var(--font-heading-weight);
  line-height: var(--font-heading-line);
  letter-spacing: var(--font-heading-tracking);
  color: var(--color-accent);
  margin-bottom: var(--spacing-xl);
}

.hero-subtext {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: var(--font-body-tracking);
  color: var(--color-body);
  max-width: 640px;
  margin: 0 auto var(--spacing-2xl) auto;
}

/* Blinking cursor after hero subtext */
.hero-subtext::after {
  content: "▊";
  display: inline-block;
  color: var(--color-green);
  margin-left: 4px;
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.hero-caption {
  font-family: var(--font-mono);
  font-size: var(--font-caption);
  font-weight: 400;
  color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-mono);
  font-size: var(--font-button);
  font-weight: var(--font-button-weight);
  line-height: var(--font-button-line);
  letter-spacing: var(--font-button-tracking);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-cta);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  text-decoration: none;
  box-shadow: 0 0 20px var(--color-accent-glow);
}

.btn-primary:active {
  background-color: var(--color-accent-pressed);
}

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

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   KBD Badge
   -------------------------------------------------------------------------- */
kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--font-kbd);
  font-weight: var(--font-kbd-weight);
  letter-spacing: var(--font-kbd-tracking);
  color: var(--color-accent);
  background-color: var(--color-kbd-bg);
  border: 1px solid var(--color-kbd-border);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  box-shadow: var(--shadow-keycap);
  line-height: 1.33;
}

/* --------------------------------------------------------------------------
   Code Mockup
   -------------------------------------------------------------------------- */
.code-mockup {
  margin: var(--spacing-section) auto 0 auto;
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-editor);
  overflow: hidden;
  max-width: var(--max-width);
}

.code-mockup-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background-color: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.code-mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.code-mockup-dot:nth-child(1) { background-color: #d07277; }
.code-mockup-dot:nth-child(2) { background-color: #dec184; }
.code-mockup-dot:nth-child(3) { background-color: #4ade80; }

.code-mockup-tab {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.4);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  background-color: rgba(255, 255, 255, 0.05);
  margin-left: 12px;
}

.code-mockup-body {
  padding: var(--spacing-lg);
  overflow-x: auto;
  overflow-y: auto;
  max-height: 320px;
}

.code-mockup-body pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.67;
  color: var(--color-syntax-text);
  white-space: pre;
}

.code-mockup-body .token-string {
  color: var(--color-syntax-string);
}

.code-mockup-body .token-number {
  color: var(--color-syntax-number);
}

.code-mockup-body .token-key {
  color: var(--color-syntax-key);
}

.code-mockup-body .token-text {
  color: var(--color-syntax-text);
}

.code-mockup-body .token-teal {
  color: var(--color-syntax-teal);
}

/* Scrollbar styling for code mockup */
.code-mockup-body::-webkit-scrollbar {
  height: 6px;
  width: 6px;
}

.code-mockup-body::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.03);
}

.code-mockup-body::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

/* --------------------------------------------------------------------------
   3-Up Feature Row
   -------------------------------------------------------------------------- */
.features {
  padding: var(--spacing-section-xl) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
}

.feature-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xl);
}

.feature-item h3 {
  font-family: var(--font-display);
  font-size: var(--font-heading-xs);
  font-weight: var(--font-heading-xs-weight);
  line-height: var(--font-heading-xs-line);
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
}

.feature-item p {
  font-family: var(--font-mono);
  font-size: var(--font-body);
  font-weight: var(--font-body-weight);
  line-height: var(--font-body-line);
  letter-spacing: var(--font-body-tracking);
  color: var(--color-body);
  margin: 0;
}

/* --------------------------------------------------------------------------
   Section Headings
   -------------------------------------------------------------------------- */
.section-heading {
  font-family: var(--font-display);
  font-size: var(--font-heading-sm);
  font-weight: var(--font-heading-sm-weight);
  line-height: var(--font-heading-sm-line);
  color: var(--color-accent);
  margin-bottom: var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   Quick Start Section
   -------------------------------------------------------------------------- */
.quickstart {
  padding: var(--spacing-section-xl) 0;
}

.command-block {
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-code-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  overflow-x: auto;
}

.command-block code {
  font-family: var(--font-mono);
  font-size: var(--font-caption);
  font-weight: 400;
  color: var(--color-green);
  white-space: nowrap;
}

.command-block kbd {
  flex-shrink: 0;
}

.quickstart-note {
  font-family: var(--font-mono);
  font-size: var(--font-small);
  font-weight: 400;
  color: var(--color-muted);
  margin-top: var(--spacing-lg);
}

/* --------------------------------------------------------------------------
   SDK API Section
   -------------------------------------------------------------------------- */
.sdk-docs {
  padding: var(--spacing-section-xl) 0;
}

.api-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.api-item {
  padding: var(--spacing-base) var(--spacing-lg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-code-bg);
}

.api-sig {
  font-family: var(--font-mono);
  font-size: var(--font-caption);
  font-weight: 400;
  color: var(--color-green);
  display: block;
  margin-bottom: var(--spacing-xs);
}

.api-item p {
  font-family: var(--font-mono);
  font-size: var(--font-small);
  font-weight: 400;
  color: var(--color-muted);
  line-height: 1.45;
  margin: 0;
}

/* --------------------------------------------------------------------------
   Provider Status Section
   -------------------------------------------------------------------------- */
.provider-status {
  padding: var(--spacing-section-xl) 0;
}

.provider-grid {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background-color: var(--color-card-border);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.provider-row {
  display: grid;
  grid-template-columns: 140px 1fr 80px;
  gap: var(--spacing-lg);
  align-items: center;
  padding: var(--spacing-base) var(--spacing-lg);
  background-color: var(--color-code-bg);
  transition: background-color 0.15s ease;
}

.provider-row:hover {
  background-color: var(--color-surface);
}

.provider-row-header {
  background-color: var(--color-surface);
  font-family: var(--font-mono);
  font-size: var(--font-small);
  font-weight: 400;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.provider-row-header:hover {
  background-color: var(--color-surface);
}

.provider-id {
  font-family: var(--font-mono);
  font-size: var(--font-caption);
  font-weight: 400;
  color: var(--color-accent);
}

.provider-auth {
  font-family: var(--font-mono);
  font-size: var(--font-small);
  font-weight: 400;
  color: var(--color-body);
}

.provider-status-label {
  font-family: var(--font-mono);
  font-size: var(--font-small);
  font-weight: 400;
  color: var(--color-muted);
}

.provider-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  text-align: center;
  width: fit-content;
}

.badge-ok {
  color: var(--color-green);
  background-color: rgba(74, 222, 128, 0.08);
  border: 1px solid rgba(74, 222, 128, 0.2);
}

/* --------------------------------------------------------------------------
   Architecture Section (moved down) 
   -------------------------------------------------------------------------- */
.architecture {
  padding: var(--spacing-section-xl) 0;
}

.arch-description {
  font-family: var(--font-mono);
  font-size: var(--font-body);
  font-weight: var(--font-body-weight);
  line-height: var(--font-body-line);
  letter-spacing: var(--font-body-tracking);
  color: var(--color-body);
  margin-bottom: var(--spacing-2xl);
}

.arch-layers {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.arch-layer {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-base) var(--spacing-lg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-card-border);
  background-color: var(--color-code-bg);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.arch-layer:hover {
  border-color: var(--color-accent);
  background-color: var(--color-surface);
}

.arch-layer-label {
  flex-shrink: 0;
  width: 110px;
  font-family: var(--font-mono);
  font-size: var(--font-caption);
  font-weight: 400;
  color: var(--color-accent);
}

.arch-layer-detail {
  font-family: var(--font-mono);
  font-size: var(--font-small);
  font-weight: 400;
  color: var(--color-muted);
  line-height: 1.5;
}

/* Layer accent borders */
.arch-layer-sdk { border-left: 2px solid var(--color-accent); }
.arch-layer-providers { border-left: 2px solid var(--color-syntax-key); }
.arch-layer-gateway { border-left: 2px solid var(--color-syntax-red); }
.arch-layer-engine { border-left: 2px solid var(--color-syntax-teal); }
.arch-layer-search { border-left: 2px solid var(--color-syntax-number); }
.arch-layer-core { border-left: 2px solid var(--color-green); }
.arch-layer-contracts { border-left: 2px solid var(--color-muted); }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-footer-bg);
  border-top: 1px solid var(--color-footer-border);
  padding: var(--spacing-section) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: var(--font-body);
  font-weight: var(--font-body-weight);
  line-height: var(--font-body-line);
  letter-spacing: var(--font-body-tracking);
  color: var(--color-heading);
  margin-bottom: var(--spacing-lg);
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li {
  margin-bottom: var(--spacing-sm);
}

.footer-col a {
  font-family: var(--font-mono);
  font-size: var(--font-caption);
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: var(--font-body-tracking);
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-col a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.footer-divider {
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin: 0 0 var(--spacing-xl) 0;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-wordmark {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 400;
  color: var(--color-accent);
}

.footer-tagline {
  font-family: var(--font-mono);
  font-size: var(--font-small);
  font-weight: 400;
  color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   Responsive — Tablet (768–1024px)
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --------------------------------------------------------------------------
   Responsive — Mobile (<768px)
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  :root {
    --font-heading: 32px;
  }

  .hero {
    padding: var(--spacing-section) 0 var(--spacing-section) 0;
  }

  .hero h1 {
    font-size: 32px;
    letter-spacing: -0.64px;
  }

  .hero-subtext {
    font-size: 14px;
  }

  .hero-actions {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .hero-actions kbd {
    display: none;
  }

  .nav-inner {
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-base) var(--spacing-xl);
  }

  .site-nav {
    height: auto;
    min-height: 60px;
    padding: var(--spacing-sm) 0;
  }

  .nav-links {
    gap: var(--spacing-lg);
  }

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

  .features {
    padding: var(--spacing-section) 0;
  }

  .quickstart {
    padding: var(--spacing-section) 0;
  }

  .architecture {
    padding: var(--spacing-section) 0;
  }

  .code-mockup-body {
    max-height: 240px;
  }

  .code-mockup-body pre {
    font-size: 11px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .arch-layer {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }

  .arch-layer-label {
    width: auto;
  }

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

  .provider-row {
    grid-template-columns: 100px 1fr 60px;
    gap: var(--spacing-md);
    padding: var(--spacing-base) var(--spacing-base);
  }
}