/* KeyHue site — https://sejoung.github.io/KeyHue/
   Tokens: ink(아이콘 남색) / paper(차가운 흰색) + 입력 소스 신호색. 신호색은 상태 표시에만 쓴다. */

:root {
  --ink: #1a2238;
  --ink-soft: #4a5470;
  --paper: #f4f6fa;
  --paper-raised: #ffffff;
  --rule: #d9dee8;
  --focus: #0a84ff;

  --src-latin: #0a84ff;
  --src-korean: #34c759;
  --src-japanese: #ff9500;
  --src-chinese: #bf5af2;
  --src-cyrillic: #30b0c7;
  --src-caps: #ff3b30;

  --edge: var(--src-latin); /* 페이지 하단 State Bar의 현재 색 (JS가 바꾼다) */

  --font-display: "Bricolage Grotesque", "Pretendard Variable", "Pretendard", system-ui, sans-serif;
  --font-body: "Pretendard Variable", "Pretendard", -apple-system, "Hiragino Sans", system-ui, sans-serif;

  --measure: 64ch;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e7ebf4;
    --ink-soft: #a7b0c6;
    --paper: #121a2e;
    --paper-raised: #1a2440;
    --rule: #2c3858;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.6 var(--font-body);
  padding-bottom: 8px; /* State Bar 자리 */
}

a { color: inherit; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 4px; }

img { max-width: 100%; height: auto; }

code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.88em;
  background: color-mix(in srgb, var(--ink) 8%, transparent);
  padding: 0.1em 0.35em;
  border-radius: 5px;
  overflow-wrap: anywhere;
}

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

/* ── 상단 ─────────────────────────────────────────────── */
.top {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 20px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font: 700 20px/1 var(--font-display);
  text-decoration: none;
}
.brand img { width: 32px; height: 32px; }
.top nav { margin-left: auto; display: flex; gap: 20px; font-size: 15px; }
.top nav a { text-decoration: none; color: var(--ink-soft); }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--ink); }

/* ── 히어로 ────────────────────────────────────────────── */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
  padding: 48px 0 72px;
}
.hero h1 {
  font: 800 clamp(40px, 6.2vw, 72px)/1.02 var(--font-display);
  letter-spacing: -0.025em;
  margin: 0 0 20px;
  text-wrap: balance;
}
.hero .lede {
  font-size: 20px;
  color: var(--ink-soft);
  max-width: 36ch;
  margin: 0 0 32px;
}
.hero .icon { width: min(360px, 100%); justify-self: center; filter: drop-shadow(0 24px 40px rgb(26 34 56 / 0.25)); }

/* 다운로드 버튼: 아이콘의 키캡처럼 */
.download {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 28px 18px;
  border-radius: 16px;
  background: linear-gradient(#ffffff, #eceff5);
  color: #1a2238;
  text-decoration: none;
  box-shadow: 0 1px 0 #fff inset, 0 -3px 0 #c9cfdb inset, 0 8px 18px rgb(26 34 56 / 0.18);
  transition: transform 80ms ease, box-shadow 80ms ease;
}
.download:active { transform: translateY(2px); box-shadow: 0 1px 0 #fff inset, 0 -1px 0 #c9cfdb inset, 0 4px 10px rgb(26 34 56 / 0.18); }
.download strong { font: 700 20px/1.2 var(--font-display); }
.download span { font-size: 14px; color: #4a5470; }
.download[aria-disabled="true"] { opacity: 0.7; }
.alt-links { margin: 16px 0 0; font-size: 15px; color: var(--ink-soft); }

/* ── 라이브 데모 ───────────────────────────────────────── */
.demo {
  border-top: 1px solid var(--rule);
  padding: 56px 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 48px;
  align-items: start;
}
.demo h2, .section h2 {
  font: 700 30px/1.15 var(--font-display);
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}
.demo p, .section > p { max-width: var(--measure); color: var(--ink-soft); margin: 0 0 12px; }

.screen {
  position: relative;
  border-radius: 14px;
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  overflow: hidden;
  box-shadow: 0 18px 40px rgb(26 34 56 / 0.12);
}
.screen .menubar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 14px;
  height: 30px;
  padding: 0 14px;
  font-size: 13px;
  color: var(--ink-soft);
  background: color-mix(in srgb, var(--ink) 5%, transparent);
}
.chameleon {
  width: 20px;
  height: 18px;
  background: var(--edge);
  -webkit-mask: url("menubar-mask.png") center / contain no-repeat;
  mask: url("menubar-mask.png") center / contain no-repeat;
  transition: background-color 120ms linear;
}
.screen .body { padding: 28px 24px 40px; }
.screen label { display: block; font-size: 14px; color: var(--ink-soft); margin-bottom: 8px; }
.screen input {
  width: 100%;
  font: 500 22px/1.3 var(--font-body);
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 12px 14px;
}
.screen input:focus { outline: 3px solid var(--edge); outline-offset: 0; }
.screen .status { margin: 14px 0 0; font-size: 15px; min-height: 1.6em; }
.screen .status b { color: var(--ink); }
.screen .bar {
  position: absolute;
  inset: auto 0 0 0;
  height: 6px;
  background: var(--edge);
  transition: background-color 120ms linear;
}
.hud {
  position: absolute;
  right: 20px;
  bottom: 22px;
  width: 64px;
  height: 58px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--ink) 82%, transparent);
  opacity: 0;
  transition: opacity 50ms linear; /* 사라질 때는 바로 */
  pointer-events: none;
}
.hud.show { opacity: 1; transition: opacity 150ms ease-out; } /* 나타날 때는 부드럽게 (앱과 같은 타이밍) */
.hud::before {
  content: "";
  position: absolute;
  inset: 9px 10px;
  background: var(--edge);
  -webkit-mask: url("hud-mask.png") center / contain no-repeat;
  mask: url("hud-mask.png") center / contain no-repeat;
}
.hud-samples { display: flex; flex-wrap: wrap; gap: 12px; margin: 16px 0 0; padding: 0; list-style: none; }
.hud-samples img { width: 104px; height: 96px; border-radius: 20px; background: #2b3144; }
.hud-samples figcaption { text-align: center; }

/* 신호색 범례 */
.legend { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 8px; font-size: 15px; }
.legend li { display: flex; align-items: center; gap: 10px; }
.legend i { width: 28px; height: 6px; border-radius: 3px; flex: none; }

/* ── 일반 섹션 ─────────────────────────────────────────── */
.section { border-top: 1px solid var(--rule); padding: 56px 0; }
.section h3 { font: 700 20px/1.3 var(--font-display); margin: 32px 0 8px; }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 20px; max-width: var(--measure); }
.steps > li { counter-increment: step; display: grid; grid-template-columns: 40px 1fr; gap: 14px; }
.steps > li::before {
  content: counter(step);
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  box-shadow: 0 -2px 0 var(--rule) inset;
  font: 700 16px/1 var(--font-display);
}
.steps p { margin: 4px 0 0; color: var(--ink-soft); }
.steps ul { margin: 6px 0 0; padding-left: 20px; color: var(--ink-soft); }

table { width: 100%; border-collapse: collapse; font-size: 15px; margin-top: 16px; }
th, td { text-align: left; vertical-align: top; padding: 12px 12px 12px 0; border-bottom: 1px solid var(--rule); }
th { font-weight: 600; }
td { color: var(--ink-soft); }
.table-wrap { overflow-x: auto; }

.footer { border-top: 1px solid var(--rule); padding: 32px 0 48px; font-size: 14px; color: var(--ink-soft); display: flex; flex-wrap: wrap; gap: 8px 24px; }

/* ── 매뉴얼 ────────────────────────────────────────────── */
.manual { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 56px; padding: 32px 0 64px; }
.toc { position: sticky; top: 24px; align-self: start; font-size: 15px; }
.toc ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.toc a { text-decoration: none; color: var(--ink-soft); }
.toc a:hover { color: var(--ink); }
.manual article { max-width: 760px; }
.manual h1 { font: 800 44px/1.05 var(--font-display); letter-spacing: -0.02em; margin: 0 0 12px; }
.manual article > p:first-of-type { font-size: 19px; color: var(--ink-soft); }
.manual h2 { font: 700 28px/1.2 var(--font-display); margin: 56px 0 12px; scroll-margin-top: 24px; }
.manual h3 { font: 700 19px/1.3 var(--font-display); margin: 28px 0 8px; }
.manual p, .manual li { max-width: var(--measure); }
.manual li + li { margin-top: 4px; }

figure { margin: 24px 0; }
figcaption { font-size: 14px; color: var(--ink-soft); margin-top: 10px; }

/* 설정 창 캡처를 macOS 창처럼 */
.window {
  max-width: 560px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--rule);
  background: #f6f6f6;
  box-shadow: 0 22px 50px rgb(26 34 56 / 0.2);
}
.window .titlebar {
  height: 28px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  background: #ececec;
  border-bottom: 1px solid #dcdcdc;
  font-size: 13px;
  color: #444;
}
.window .titlebar i { width: 12px; height: 12px; border-radius: 50%; background: #ff5f57; }
.window .titlebar i:nth-child(2) { background: #febc2e; }
.window .titlebar i:nth-child(3) { background: #d0d0d0; }
.window .titlebar span { margin: 0 auto; transform: translateX(-30px); }
.window img { display: block; width: 100%; }

.note {
  border-left: 4px solid var(--src-japanese);
  padding: 4px 0 4px 16px;
  margin: 28px 0 20px;
  color: var(--ink-soft);
  max-width: var(--measure);
}

/* ── 페이지 하단 State Bar ─────────────────────────────── */
.state-bar {
  position: fixed;
  inset: auto 0 0 0;
  height: 6px;
  background: var(--edge);
  z-index: 10;
  transition: background-color 120ms linear;
}

@media (max-width: 820px) {
  .hero, .demo, .manual { grid-template-columns: 1fr; }
  .hero { padding-top: 16px; gap: 24px; }
  .hero .icon { grid-row: 1; width: 160px; justify-self: start; }
  .toc { position: static; }
  .top nav { gap: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}