@import url('fonts.css');

:root {
  --hue: 250;
  --ink: oklch(24% 0.02 var(--hue));
  --ink-2: oklch(38% 0.025 var(--hue));
  --muted: oklch(52% 0.02 var(--hue));
  --border: oklch(88% 0.012 var(--hue));
  --border-strong: oklch(78% 0.018 var(--hue));
  --bg: oklch(97.5% 0.006 var(--hue));
  --surface: oklch(99.3% 0.003 var(--hue));
  --accent: oklch(52% 0.19 265);
  --accent-ink: oklch(98% 0.01 265);
  --accent-soft: oklch(93% 0.04 265);
  --ok: oklch(52% 0.13 155);
  --warn: oklch(55% 0.14 70);
  --err: oklch(52% 0.19 25);

  --font-display: 'Space Grotesk', 'Space Grotesk Fallback', system-ui, sans-serif;
  --font-body: 'Source Sans 3', 'Source Sans 3 Fallback', system-ui, sans-serif;
  --font-mono: 'Geist Mono', 'Geist Mono Fallback', ui-monospace, monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --space-s: clamp(0.75rem, 0.6rem + 0.6vw, 1.1rem);
  --space-m: clamp(1.5rem, 1.1rem + 1.5vw, 2.4rem);
  --space-l: clamp(2.5rem, 1.8rem + 2.8vw, 4.5rem);
  --space-xl: clamp(3.5rem, 2.4rem + 4.5vw, 7rem);
}

* { box-sizing: border-box; }

::selection { background: var(--accent-soft); color: var(--ink); }

html { color-scheme: light; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-2);
  font: 400 clamp(1rem, 0.96rem + 0.15vw, 1.075rem)/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }

.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: var(--space-m) 1.5rem var(--space-xl);
}

/* ---------- top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: var(--space-s);
}

.lang-toggle {
  display: inline-flex;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
  background: var(--surface);
}

.lang-toggle button {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--muted);
  padding: 5px 11px;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.lang-toggle button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--surface);
}

.lang-toggle button:hover:not([aria-pressed="true"]) { color: var(--ink); }

.lang-toggle button:focus-visible,
.btn:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

.hero {
  padding: var(--space-l) 0 var(--space-m);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.6rem, 2.1rem + 2.2vw, 4rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-s);
  color: var(--ink);
  max-width: 14ch;
}

.tagline {
  color: var(--muted);
  font-size: clamp(1.05rem, 1rem + 0.3vw, 1.2rem);
  max-width: 46ch;
  line-height: 1.55;
}

.tagline strong { color: var(--ink-2); font-weight: 600; }

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

section.block {
  padding-top: var(--space-m);
  margin-top: var(--space-m);
  border-top: 1px solid var(--border);
}

.block-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: var(--space-s);
}

.block-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0;
}

.block-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

.lede {
  color: var(--muted);
  max-width: 56ch;
  margin: 0 0 var(--space-s);
}

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

.actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: var(--space-s);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0 1.15rem;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  font: 500 0.95rem/1 var(--font-body);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s var(--ease), border-color 0.15s var(--ease), background-color 0.15s var(--ease), box-shadow 0.15s var(--ease);
}

.btn:hover { border-color: var(--ink-2); }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover { background: oklch(from var(--accent) calc(l - 0.05) c h); border-color: oklch(from var(--accent) calc(l - 0.05) c h); }

.btn[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
}

.btn .btn-sub {
  font-family: var(--font-mono);
  font-size: 0.8em;
  opacity: 0.75;
}

/* ---------- install steps ---------- */

.install-steps {
  margin-top: var(--space-s);
}

.install-steps summary {
  cursor: pointer;
  color: var(--ink-2);
  font-weight: 600;
  font-size: 0.92rem;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0;
}

.install-steps summary::-webkit-details-marker { display: none; }

.install-steps summary::before {
  content: '';
  width: 7px;
  height: 7px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(-45deg);
  transition: transform 0.2s var(--ease);
}

.install-steps[open] summary::before { transform: rotate(45deg); }

.install-steps-body {
  margin: 0.75rem 0 0.25rem;
  color: var(--muted);
  font-size: 0.94rem;
}

.install-steps-body p:first-child { margin-top: 0; }
.install-steps-body strong { color: var(--ink-2); }

.install-steps-body ol {
  margin: 0.4rem 0 1.1rem;
  padding-left: 1.3rem;
}

.install-steps-body li + li { margin-top: 0.3rem; }

.install-steps-body code {
  font-family: var(--font-mono);
  background: var(--accent-soft);
  color: var(--ink);
  border-radius: 4px;
  padding: 0.05em 0.4em;
  font-size: 0.88em;
}

/* ---------- demo widget ---------- */

.demo-surface {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  padding: var(--space-s) var(--space-m);
}

.status-row {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin: 0 0 var(--space-s);
  padding-bottom: var(--space-s);
  border-bottom: 1px solid var(--border);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted);
}

.chip::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--muted);
  flex: none;
  transition: background-color 0.2s var(--ease);
}

.chip-ok::before { background: var(--ok); }
.chip-warn::before { background: var(--warn); }
.chip-err::before { background: var(--err); }
.chip-ok { color: var(--ok); }
.chip-warn { color: var(--warn); }
.chip-err { color: var(--err); }

.share-row {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.9rem;
}

.share-row input {
  flex: 1;
  min-height: 44px;
  padding: 0 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  font: 0.92rem var(--font-mono);
  color: var(--ink-2);
  background: var(--bg);
}

.stats {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.5rem 1.25rem;
  margin: 0.9rem 0 0;
}

.stats dt {
  color: var(--muted);
  font-size: 0.85rem;
}

.stats dd {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--ink);
}

.log {
  color: var(--muted);
  font-size: 0.88rem;
  font-family: var(--font-mono);
  min-height: 1.4em;
  margin-top: var(--space-s);
}

.hidden { display: none; }

/* ---------- footer ---------- */

footer {
  margin-top: var(--space-l);
  padding-top: var(--space-s);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}

/* ---------- reveal-on-scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .lang-toggle button, .chip::before, .install-steps summary::before { transition: none; }
}

@media (max-width: 30rem) {
  .actions { flex-direction: column; }
  .actions .btn { width: 100%; }
  .share-row { flex-direction: column; }
}