/* ============================================================
   Rizo — marketing site
   Palette is built from the actual logo teal (#479b97, sampled
   from icon.png), not invented separately — see website/README.md.
   ============================================================ */

:root {
  /* light theme (default palette; dark overrides below) */
  --bg: #F1F6F4;
  --bg-alt: #E7F0EC;
  --surface: #FFFFFF;
  --surface-2: #EEF5F2;
  --border: #D6E3DE;
  --text: #10221F;
  --text-dim: #4C6963;
  --text-faint: #7C948E;

  --accent: #007570;
  --accent-bright: #009C96;
  --accent-soft: rgba(0, 156, 150, 0.12);
  --gold: #B87F35;
  --gold-soft: rgba(184, 127, 53, 0.14);
  --rust: #B24A3A;
  --rust-soft: rgba(178, 74, 58, 0.12);

  --radius: 3px;
  --font-display: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --font-body: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --shadow-card: 0 1px 2px rgba(16, 34, 31, 0.06), 0 8px 24px rgba(16, 34, 31, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0B1514;
    --bg-alt: #0F1B19;
    --surface: #12211F;
    --surface-2: #17281F;
    --border: #223531;
    --text: #E9F0EE;
    --text-dim: #9FB6B0;
    --text-faint: #6C8983;

    --accent: #009C96;
    --accent-bright: #3FB4B0;
    --accent-soft: rgba(0, 156, 150, 0.18);
    --gold: #DFA05C;
    --gold-soft: rgba(223, 160, 92, 0.14);
    --rust: #D97A63;
    --rust-soft: rgba(217, 122, 99, 0.14);

    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.35);
  }
}

:root[data-theme="dark"] {
  --bg: #0B1514;
  --bg-alt: #0F1B19;
  --surface: #12211F;
  --surface-2: #17281F;
  --border: #223531;
  --text: #E9F0EE;
  --text-dim: #9FB6B0;
  --text-faint: #6C8983;

  --accent: #4CA39E;
  --accent-bright: #6FCFC7;
  --accent-soft: rgba(76, 163, 158, 0.16);
  --gold: #DFA05C;
  --gold-soft: rgba(223, 160, 92, 0.14);
  --rust: #D97A63;
  --rust-soft: rgba(217, 122, 99, 0.14);

  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  text-wrap: balance;
  margin: 0;
  letter-spacing: -0.01em;
}

p { margin: 0; }

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}

.brand img { width: 26px; height: 26px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dim);
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--accent); }

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

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 11px 18px;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: #08201D;
}
.btn-primary:hover { background: var(--accent-bright); }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn-sm { padding: 8px 12px; font-size: 0.8rem; }

/* ---------- hero ---------- */

.hero {
  padding: 88px 0 64px;
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 56px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: var(--radius);
  margin-bottom: 20px;
}
.eyebrow svg { width: 11px; height: 11px; }

.hero h1 {
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  max-width: 15ch;
}

.hero-sub {
  margin-top: 20px;
  max-width: 56ch;
  font-size: 1.15rem;
  color: var(--text-dim);
}

.hero-ctas {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.install-cmd {
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px 10px 16px;
  color: var(--text-dim);
}
.install-cmd code { color: var(--accent-bright); }
.copy-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-faint);
  display: flex;
  padding: 4px;
  border-radius: 3px;
}
.copy-btn:hover { color: var(--accent); background: var(--accent-soft); }
.copy-btn svg { width: 15px; height: 15px; }

/* ---------- routing diagram ---------- */

.diagram-wrap {
  margin-top: 56px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 28px clamp(12px, 4vw, 40px) 20px;
  box-shadow: var(--shadow-card);
  overflow-x: auto;
}

.diagram-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 4px;
}

#routing-diagram { width: 100%; height: auto; min-width: 640px; }

.node-path {
  fill: none;
  stroke: var(--border);
  stroke-width: 1.5;
}

.flow-dot {
  fill: var(--accent-bright);
}

.node-box {
  fill: var(--surface-2);
  stroke: var(--border);
  stroke-width: 1;
}
.node-box.tier-coding { stroke: var(--accent); }

.node-text {
  font-family: var(--font-mono);
  fill: var(--text);
}
.node-sub {
  font-family: var(--font-mono);
  fill: var(--text-faint);
}
.node-price {
  font-family: var(--font-mono);
  fill: var(--accent-bright);
}

/* ---------- sections ---------- */

section { padding: 84px 0; }
section + section { border-top: 1px solid var(--border); }

.section-head {
  max-width: 62ch;
  margin-bottom: 48px;
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
  display: block;
}

.section-head h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
}

.section-head p {
  margin-top: 14px;
  color: var(--text-dim);
  font-size: 1.05rem;
}

/* routing table */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  min-width: 640px;
}

th, td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th {
  color: var(--text-faint);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

tr:last-child td { border-bottom: none; }

td.model { color: var(--accent-bright); }
td.price { font-variant-numeric: tabular-nums; color: var(--text-dim); }

.pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
}
.pill-coding { background: var(--accent-soft); color: var(--accent-bright); }
.pill-general { background: var(--gold-soft); color: var(--gold); }
.pill-trivial { background: var(--surface-2); color: var(--text-dim); }

.table-note {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
  margin-top: 16px;
}

/* free/paid toggle mockup */

.mode-demo {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}

.toggle-mock {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3px;
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  width: fit-content;
}
.toggle-mock span {
  padding: 7px 18px;
  border-radius: 16px;
  color: var(--text-faint);
}
.toggle-mock span.active-paid { background: var(--accent); color: #08201D; }
.toggle-mock span.active-free { background: var(--gold); color: #241705; }

.mode-cards {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.mode-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  background: var(--surface);
}
.mode-card h4 {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin: 0 0 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.mode-card p { color: var(--text-dim); font-size: 0.98rem; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot-paid { background: var(--accent); }
.dot-free { background: var(--gold); }

/* feature grid */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--surface);
}

.feature-card .glyph {
  width: 30px;
  height: 30px;
  color: var(--accent);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--text-dim);
  font-size: 0.98rem;
}

/* safety list */

.safety-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.safety-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.safety-list li.destructive { border-color: color-mix(in srgb, var(--rust) 40%, var(--border)); }
.safety-list .tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 3px;
  background: var(--rust-soft);
  color: var(--rust);
  flex-shrink: 0;
  margin-top: 2px;
}
.safety-list .tag.always { background: var(--accent-soft); color: var(--accent-bright); }
.safety-list code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--accent-bright);
}

/* byok */

.byok-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 48px;
  align-items: start;
}

.byok-steps {
  display: grid;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.byok-step {
  display: flex;
  gap: 16px;
  padding: 18px 20px;
}
.byok-step + .byok-step { border-top: 1px solid var(--border); }
.byok-step .num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  flex-shrink: 0;
}
.byok-step p { color: var(--text-dim); font-size: 0.95rem; }
.byok-step strong { color: var(--text); font-family: var(--font-mono); font-size: 0.95rem; display: block; margin-bottom: 4px; }

.byok-promise {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  background: var(--surface-2);
}
.byok-promise h3 { font-size: 1rem; margin-bottom: 14px; }
.byok-promise ul { margin: 0; padding-left: 18px; color: var(--text-dim); font-size: 0.95rem; display: grid; gap: 10px; }

/* cta band */

.cta-band {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 48px;
  text-align: left;
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: center;
  justify-content: space-between;
}
.cta-band h2 { font-size: 1.4rem; max-width: 24ch; }
.cta-band-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* footer */

footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 40px;
}

.footer-brand {
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.logo-lockup {
  height: 46px;
  width: auto;
  display: none;
}
.footer-tagline {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  border-left: 1px solid var(--border);
  padding-left: 14px;
}
.footer-tagline em { color: var(--accent-bright); font-style: normal; }
.logo-lockup-light { display: block; }
:root[data-theme="dark"] .logo-lockup-light { display: none; }
:root[data-theme="dark"] .logo-lockup-dark { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .logo-lockup-light { display: none; }
  :root:not([data-theme="light"]) .logo-lockup-dark { display: block; }
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { text-decoration: none; color: var(--text-faint); }
.footer-links a:hover { color: var(--accent); }

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-dim);
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }
.theme-toggle svg { width: 15px; height: 15px; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
}

@media (min-width: 860px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .mode-demo { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .byok-grid { grid-template-columns: minmax(0, 1fr); }
  .cta-band { padding: 32px 24px; }
}

/* reveal-on-scroll */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}