/* CodeSpark landing — single stylesheet, no framework. */

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

:root {
  --bg: #0b0c10;
  --surface: #141620;
  --surface-2: #1c1f2b;
  --border: #2a2e3d;
  --text: #e8ebf0;
  --text-dim: #9aa0ac;
  --accent: #ffd36b; /* warm spark yellow */
  --accent-ink: #1a1305;
  --ok: #7ad27a;
  --warn: #ffb86b;
  --max-width: 1100px;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ───────────────────────────────────────────────────────── */

.site-header {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 18px;
  color: var(--text);
}
.brand-mark {
  color: var(--accent);
}
.nav {
  display: flex;
  gap: 24px;
  font-size: 14px;
}
.nav a {
  color: var(--text-dim);
}
.nav a:hover {
  color: var(--text);
  text-decoration: none;
}

/* ── Hero ─────────────────────────────────────────────────────────── */

.hero {
  padding: 88px 0 64px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  font-weight: 700;
}
.hero h1 em {
  color: var(--accent);
  font-style: normal;
}
.hero .tagline {
  font-size: clamp(16px, 1.8vw, 20px);
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 36px;
}
.hero .cta-row {
  display: inline-flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 80ms ease, background 150ms ease, border 150ms ease;
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover {
  background: #ffdf8a;
}
.btn-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-secondary:hover {
  border-color: var(--text-dim);
}

/* ── Features ─────────────────────────────────────────────────────── */

.features {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}
.features h2,
.pricing h2,
.faq h2 {
  font-size: clamp(24px, 3vw, 32px);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.section-intro {
  color: var(--text-dim);
  margin: 0 0 40px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.feature h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--text);
}
.feature p {
  margin: 0;
  color: var(--text-dim);
  font-size: 14.5px;
}

/* ── Pricing ──────────────────────────────────────────────────────── */

.pricing {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.tier {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
}
.tier--featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
.tier-name {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.tier-price {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 4px;
}
.tier-price small {
  font-size: 14px;
  color: var(--text-dim);
  font-weight: 400;
}
.tier-tagline {
  color: var(--text-dim);
  margin-bottom: 20px;
  font-size: 14px;
}
.tier ul {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  flex: 1;
}
.tier li {
  font-size: 14.5px;
  padding: 6px 0;
  color: var(--text);
}
.tier li::before {
  content: '✓';
  color: var(--ok);
  margin-right: 8px;
  font-weight: 700;
}
.tier .btn {
  width: 100%;
  text-align: center;
}

/* ── FAQ ──────────────────────────────────────────────────────────── */

.faq {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-item h3 {
  margin: 0 0 6px;
  font-size: 16px;
  color: var(--text);
}
.faq-item p {
  margin: 0;
  color: var(--text-dim);
  font-size: 14.5px;
}

/* ── Footer ───────────────────────────────────────────────────────── */

.site-footer {
  padding: 40px 0 64px;
  color: var(--text-dim);
  font-size: 14px;
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.site-footer a {
  color: var(--text-dim);
}
.site-footer a:hover {
  color: var(--text);
}
.site-footer .legal-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

/* ── Legal / docs pages ───────────────────────────────────────────── */

.doc-page {
  padding: 48px 0 72px;
}
.doc-page h1 {
  font-size: clamp(28px, 3.5vw, 40px);
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}
.doc-page .doc-meta {
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 32px;
}
.doc-page h2 {
  font-size: 22px;
  margin: 32px 0 12px;
  letter-spacing: -0.01em;
}
.doc-page h3 {
  font-size: 17px;
  margin: 24px 0 8px;
}
.doc-page p,
.doc-page li {
  color: var(--text);
  font-size: 15.5px;
}
.doc-page ul,
.doc-page ol {
  padding-left: 20px;
}

/* ── Misc ─────────────────────────────────────────────────────────── */

code,
kbd {
  font-family: var(--mono);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 13px;
}

.not-found {
  text-align: center;
  padding: 120px 0;
}
.not-found h1 {
  font-size: 72px;
  margin: 0;
  color: var(--accent);
  letter-spacing: -0.03em;
}
.not-found p {
  color: var(--text-dim);
  margin-top: 8px;
}