/* daukey.keellabs.dev - colours and type from design-tokens.css (generated from the DauKey repo). */

:root {
  --page: var(--dk-color-background);
  --raised: var(--dk-color-surface);
  --ink: var(--dk-color-text);
  --muted: var(--dk-color-text-secondary);
  --line: var(--dk-color-border);
  --accent: var(--dk-color-accent);
  --accent-text: var(--dk-color-accent-text);
  --heading: var(--dk-color-brand);
  --alt: color-mix(in srgb, var(--dk-color-surface) 55%, var(--dk-color-background));
  --shadow: 0 1px 2px rgb(20 23 42 / 0.06), 0 8px 24px rgb(20 23 42 / 0.06);
  color-scheme: light dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--dk-fontFamily-brand);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-text); }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }

code, kbd, pre { font-family: var(--dk-fontFamily-mono); font-size: 0.88em; }
code { background: var(--alt); border: 1px solid var(--line); padding: 0.05em 0.35em; border-radius: 5px; }
kbd {
  display: inline-block; padding: 0.05em 0.45em; border-radius: 6px;
  border: 1px solid var(--line); border-bottom-width: 2px; background: var(--raised);
}
pre { background: var(--dk-color-ink-800); color: var(--dk-color-ink-50); padding: 14px 16px; border-radius: 10px; overflow-x: auto; }
pre code { background: none; border: 0; padding: 0; color: inherit; }

.wrap { width: min(1080px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(760px, 100% - 32px); }

/* ------------------------------------------------------------- header */

.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--page) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.top-row { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.brand img { border-radius: 8px; box-shadow: 0 0 0 1px var(--line); } /* the navy keycap needs an edge on dark pages */
.brand { display: flex; align-items: center; gap: 10px; color: var(--heading); text-decoration: none; font-weight: 700; font-size: 19px; }
nav { display: flex; gap: 4px; }
nav a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 8px; font-size: 15px; font-weight: 500; }
nav a:hover { color: var(--ink); background: var(--alt); }

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

.hero { padding: 72px 0 64px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 48px; align-items: center; }
.eyebrow { margin: 0 0 12px; color: var(--accent-text); font-weight: 600; font-size: 14px; letter-spacing: 0.02em; }
h1 { margin: 0; color: var(--heading); font-size: clamp(34px, 5vw, 54px); line-height: 1.12; letter-spacing: -0.02em; font-weight: 700; }
h1 .accent { color: var(--accent); }
.lead { font-size: 19px; color: var(--muted); max-width: 34em; margin: 20px 0 28px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.version-line { margin: 14px 0 0; color: var(--muted); font-size: 14px; }

.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 22px; border-radius: 12px;
  font-weight: 600; font-size: 16px; text-decoration: none; white-space: nowrap;
  transition: transform 120ms ease, background-color 120ms ease, box-shadow 120ms ease;
}
.button.primary { background: var(--accent); color: var(--dk-color-on-accent); box-shadow: 0 6px 18px rgb(255 92 56 / 0.28); }
.button.primary:hover { background: var(--dk-color-ember-600); transform: translateY(-1px); }
.button.ghost { color: var(--ink); border: 1px solid var(--line); background: var(--raised); }
.button.ghost:hover { border-color: var(--muted); }
.button[aria-disabled="true"] { background: var(--alt); color: var(--muted); box-shadow: none; border: 1px dashed var(--line); }
@media (prefers-reduced-motion: reduce) { .button { transition: none; } .button.primary:hover { transform: none; } }

/* typing demo */
.demo {
  margin: 0; background: var(--raised); border: 1px solid var(--line); border-radius: 18px;
  box-shadow: var(--shadow); overflow: hidden;
}
.demo-bar { display: flex; align-items: center; gap: 7px; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.dot { width: 11px; height: 11px; border-radius: 50%; background: var(--line); }
.demo-mode { margin-left: auto; display: grid; place-items: center; width: 30px; height: 26px; border-radius: 6px; color: var(--heading); background: var(--alt); }
.demo-rows { list-style: none; margin: 0; padding: 10px 18px 16px; }
.demo-rows li { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--line); flex-wrap: wrap; }
.demo-rows li:last-child { border-bottom: 0; }
.keys { font-size: 15px; color: var(--muted); }
.arrow { color: var(--muted); }
.out { font-size: 22px; font-weight: 600; color: var(--heading); }
.tag { margin-left: auto; font-size: 12px; font-weight: 600; color: var(--accent-text); background: color-mix(in srgb, var(--accent) 12%, transparent); padding: 2px 8px; border-radius: 99px; }

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

.section { padding: 72px 0; }
.section.alt { background: var(--alt); border-block: 1px solid var(--line); }
h2 { margin: 0 0 8px; color: var(--heading); font-size: 32px; letter-spacing: -0.01em; }
.section-lead { margin: 0 0 28px; color: var(--muted); }
h2 + .cards, h2 + .guides { margin-top: 28px; }

.cards { display: grid; gap: 18px; }
.downloads { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.features { grid-template-columns: repeat(3, minmax(0, 1fr)); }
/* grid items may shrink below their longest word or button, so nothing pushes the page sideways */
.hero-grid > *, .cards > * { min-width: 0; }
.card { background: var(--raised); border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.card h3 { margin: 0 0 6px; font-size: 20px; color: var(--heading); }
.card p { margin: 0; color: var(--muted); }
.card .meta { margin-bottom: 18px; font-size: 14px; }
.card .hint { margin-top: 14px; font-size: 14px; }
.downloads .card { display: flex; flex-direction: column; align-items: flex-start; }
.downloads .card.recommended { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), var(--shadow); }
.downloads .card.recommended h3::after {
  content: "Máy của bạn"; margin-left: 10px; vertical-align: 3px;
  font-size: 12px; font-weight: 600; color: var(--accent-text);
  background: color-mix(in srgb, var(--accent) 12%, transparent); padding: 2px 8px; border-radius: 99px;
}
.where { margin: 0 0 6px !important; font-size: 12px; font-weight: 600; letter-spacing: 0.03em; color: var(--accent-text) !important; text-transform: uppercase; }
.bad { color: var(--dk-color-error); text-decoration: line-through; text-decoration-thickness: 1.5px; }
.basics-title { margin: 44px 0 14px; font-size: 20px; color: var(--heading); }
.basics { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px 24px; color: var(--muted); }
.basics li { padding-left: 22px; position: relative; }
.basics li::before { content: "✓"; position: absolute; left: 0; color: var(--accent-text); font-weight: 700; }
@media (max-width: 860px) { .basics { grid-template-columns: minmax(0, 1fr); } }
.mode-pair { display: inline-flex; align-items: center; gap: 4px; margin-right: 10px; color: var(--heading); font-weight: 600; }

/* guides and FAQ */
details { background: var(--raised); border: 1px solid var(--line); border-radius: 14px; margin-bottom: 12px; }
summary { cursor: pointer; list-style: none; padding: 16px 20px; font-weight: 600; color: var(--heading); display: flex; justify-content: space-between; gap: 12px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--muted); font-weight: 400; font-size: 22px; line-height: 1; }
details[open] summary::after { content: "−"; }
details > :not(summary) { margin: 0 20px 18px; }
details ol { padding-left: 20px; }
details li { margin-bottom: 8px; }
.hint { color: var(--muted); font-size: 14px; }

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

.foot { padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
.foot-row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* --------------------------------------------------------- dark glyphs */

@media (prefers-color-scheme: dark) {
  img[src$="mode-vi.svg"], img[src$="mode-en.svg"] { filter: invert(1); }
}

/* ------------------------------------------------------------- narrow */

@media (max-width: 860px) {
  .hero { padding: 40px 0; }
  .hero-grid, .downloads, .features { grid-template-columns: minmax(0, 1fr); }
  .cta .button { flex: 1 1 auto; }
  .hero-grid { gap: 32px; }
  nav a:not(:first-child) { display: none; }
  .section { padding: 52px 0; }
}