/* ─── TOKENS ─────────────────────────────────────────────── */
:root {
  --bg:        #FAFAF8;
  --bg-alt:    #F4F3EF;
  --surface:   #EEECEA;
  --border:    #E2E0DA;
  --text:      #1A1917;
  --text-2:    #6B6860;
  --text-3:    #9B9890;
  --accent:    #C96A2B;
  --accent-bg: #FEF0E4;
  --code-bg:   #F0EDE8;
  --radius:    10px;
  --shadow:    0 1px 3px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.04);
}

[data-theme="dark"] {
  --bg:        #1A1917;
  --bg-alt:    #211F1C;
  --surface:   #2A2825;
  --border:    #363330;
  --text:      #F0EDE8;
  --text-2:    #A09D98;
  --text-3:    #6B6860;
  --accent:    #D97B3C;
  --accent-bg: #2C1E10;
  --code-bg:   #252320;
  --shadow:    0 1px 3px rgba(0,0,0,.3), 0 4px 12px rgba(0,0,0,.2);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background .2s, color .2s;
}

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

/* ─── LAYOUT ─────────────────────────────────────────────── */
.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── NAV ────────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
}

.nav-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: -.01em;
}

.logo-mark {
  font-size: 1.1rem;
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  font-size: .875rem;
  color: var(--text-2);
  transition: color .15s;
}

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

.theme-toggle {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  color: var(--text-2);
  transition: background .15s, color .15s;
}

.theme-toggle:hover { background: var(--border); color: var(--text); }

.icon-moon { display: none; }

[data-theme="dark"] .icon-sun  { display: none; }
[data-theme="dark"] .icon-moon { display: inline; }

/* ─── HERO ───────────────────────────────────────────────── */
.hero {
  padding: 96px 0 80px;
  text-align: center;
}

.badge {
  display: inline-block;
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  border-radius: 100px;
  padding: 4px 12px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -.03em;
  margin-bottom: 20px;
}

.accent { color: var(--accent); }

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-2);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  font-size: .9rem;
  font-weight: 500;
  padding: 10px 22px;
  border-radius: var(--radius);
  transition: opacity .15s, transform .1s;
}
.btn-primary:hover { opacity: .88; transform: translateY(-1px); }

.btn-ghost {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-2);
  padding: 10px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: background .15s, color .15s;
}
.btn-ghost:hover { background: var(--border); color: var(--text); }

/* ─── SECTIONS ───────────────────────────────────────────── */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }

.section-label {
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.section h2 {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -.025em;
  margin-bottom: 10px;
}

.section-sub {
  font-size: 1rem;
  color: var(--text-2);
  margin-bottom: 40px;
}

/* ─── PRODUCT CARD ───────────────────────────────────────── */
.product-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
  box-shadow: var(--shadow);
}

.section-alt .product-card { background: var(--bg); }

.product-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.product-icon {
  font-size: 1.8rem;
  width: 52px;
  height: 52px;
  background: var(--accent-bg);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.product-header h3 {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -.02em;
  margin-bottom: 4px;
}

.chip {
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--text-3);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 100px;
}

.product-desc {
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 28px;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 600px) {
  .features-grid { grid-template-columns: 1fr; }
}

.feature {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.feature-icon {
  font-size: 1.1rem;
  margin-top: 1px;
  flex-shrink: 0;
}

.feature strong {
  display: block;
  font-size: .875rem;
  font-weight: 600;
  margin-bottom: 3px;
  letter-spacing: -.01em;
}

.feature p {
  font-size: .8rem;
  color: var(--text-2);
  line-height: 1.5;
}

/* ─── SDK CARDS ──────────────────────────────────────────── */
.sdk-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 640px) {
  .sdk-grid { grid-template-columns: 1fr; }
}

.sdk-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow);
}

.sdk-lang {
  display: inline-block;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 6px;
  width: fit-content;
}

.sdk-lang.python {
  background: #EFF6FF;
  color: #2563EB;
}

[data-theme="dark"] .sdk-lang.python {
  background: #0F2147;
  color: #60A5FA;
}

.sdk-lang.js {
  background: #FEFCE8;
  color: #A16207;
}

[data-theme="dark"] .sdk-lang.js {
  background: #1C1500;
  color: #FCD34D;
}

.sdk-card p {
  font-size: .875rem;
  color: var(--text-2);
  line-height: 1.6;
}

.code-block {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: .78rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 14px;
  color: var(--text);
  overflow-x: auto;
}

.code-snippet {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: .77rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  overflow-x: auto;
  line-height: 1.65;
  color: var(--text-2);
}

.code-snippet .kw { color: var(--accent); }
.code-snippet .str { color: #5B8A5B; }
[data-theme="dark"] .code-snippet .str { color: #7EB87E; }

.sdk-link {
  font-size: .84rem;
  font-weight: 500;
  color: var(--accent);
  margin-top: auto;
  transition: opacity .15s;
}

.sdk-link:hover { opacity: .7; }

/* ─── FOOTER ─────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: .875rem;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  font-size: .83rem;
  color: var(--text-2);
  transition: color .15s;
}

.footer-links a:hover { color: var(--text); }

.footer-note {
  font-size: .78rem;
  color: var(--text-3);
  width: 100%;
}

@media (max-width: 520px) {
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .nav-links { gap: 16px; }
}