/* After gubo.kr: white page, black 1px rules, small grotesk type, nothing else. */
:root {
  --ink: #000;
  --paper: #fff;
  --mute: #8a8a8a;
  --gutter: 16px;
  color-scheme: light;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  display: grid;
  grid-template-rows: auto 1fr auto;
  background: var(--paper);
  color: var(--ink);
  font: 400 14px/1.4 "Pretendard", system-ui, -apple-system, "Helvetica Neue", sans-serif;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

a { color: inherit; text-decoration: none; }

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 var(--gutter);
}

header.bar {
  height: 56px;
  border-bottom: 1px solid var(--ink);
}

.logo { display: block; line-height: 0; }
#wordmark { height: 30px; width: auto; shape-rendering: crispEdges; }
#wordmark rect { fill: var(--ink); }
#wordmark rect.note { fill: #ff5ea3; }

nav { display: flex; gap: 28px; font-size: 16px; }
nav a:hover { text-decoration: underline; text-underline-offset: 4px; }

main { position: relative; min-height: 0; }

#stage { position: absolute; inset: 0; cursor: grab; touch-action: none; }
#stage:active { cursor: grabbing; }
#stage canvas { display: block; outline: none; }

.hint, .loading {
  position: absolute;
  pointer-events: none;
}
/* Model name, what it is, and (TULIP) its front colours right under them. */
.intro { position: absolute; top: 14px; left: var(--gutter); z-index: 1; }
.caption { display: flex; gap: 12px; pointer-events: none; }
.caption #name { font-weight: 600; }
.caption #desc { color: var(--mute); }
.hint { bottom: 14px; right: var(--gutter); color: var(--mute); font-size: 12px; }
/* The sample track, bottom left across from the hint: play it, then shape it with the EQ. */
.play {
  position: absolute;
  bottom: 10px;
  left: var(--gutter);
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  border: 0;
  background: none;
  font: inherit;
  font-size: 12px;
  color: var(--ink);
  cursor: pointer;
}
.play i {
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 5px 0 5px 8px;
  border-color: transparent transparent transparent currentColor;
}
.play[aria-pressed="true"] i { width: 8px; height: 10px; border: 0; border-left: 3px solid; border-right: 3px solid; }
.play-track { color: var(--mute); }
.play:hover [data-label] { text-decoration: underline; text-underline-offset: 3px; }
.loading { top: 50%; left: 50%; transform: translate(-50%, -50%); color: var(--mute); }
.loading[hidden] { display: none; }

.picker {
  min-height: 56px;
  border-top: 1px solid var(--ink);
  flex-wrap: wrap;
}

#models { display: flex; list-style: none; gap: 0; }
#models button {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 16px 28px 16px 0;
  border: 0;
  background: none;
  font: inherit;
  font-size: 16px;
  color: var(--mute);
  cursor: pointer;
}
#models button small { font-size: 11px; }
#models button:hover,
#models button[aria-pressed="true"] { color: var(--ink); }
#models button[aria-pressed="true"] span { text-decoration: underline; text-underline-offset: 4px; }

/* Colour rows, as the app's DESIGN page: label and picked name on one line, the chips under it.
   Fronts are small panels, horns are round; the picked one gets a thin grey ring. */
.chips { margin-top: 14px; }
.chips + .chips { margin-top: 12px; }
.chips[hidden] { display: none; }
.chip-head { display: flex; align-items: center; gap: 10px; height: 20px; margin-bottom: 6px; font-size: 12px; }
.chip-label { width: 44px; font-size: 11px; letter-spacing: 0.04em; color: var(--mute); }
.chip-name { color: #4a4a4a; white-space: nowrap; }
#finishes, #horns { display: flex; gap: 6px; list-style: none; }
#finishes li, #horns li { flex: none; }
#finishes button, #horns button {
  display: block;
  padding: 2px;
  border: 1px solid transparent;
  border-radius: 50%;
  background: none;
  cursor: pointer;
}
#finishes button::before, #horns button::before {
  content: "";
  display: block;
  width: 20px;
  height: 20px;
  border-radius: inherit;
  background: var(--swatch);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
  transition: transform 0.15s;
}
#finishes button { border-radius: 6px; }
#finishes button::before { border-radius: 4px; }
#finishes button:hover::before, #horns button:hover::before { transform: scale(1.1); }
#finishes button[aria-pressed="true"], #horns button[aria-pressed="true"] { border-color: #9a9a9a; }

/* Shuffle sits at the end of the last colour row's head line. */
.shuffle {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  margin: -2px -4px -2px auto;
  padding: 0;
  border: 0;
  background: none;
  color: #4a4a4a;
  cursor: pointer;
}
.shuffle[hidden] { display: none; }
.shuffle svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; transition: transform 0.25s; }
.shuffle:hover { color: var(--ink); }
.shuffle:hover svg { transform: scale(1.12); }

.picker-end { display: flex; align-items: center; gap: 28px; }
/* For whoever looks closely: barely there. */
.credit { font-size: 11px; color: #c4c4c4; white-space: nowrap; }
.credit:hover { color: var(--mute); }

/* The console's disc, small, up in the corner: tap it to bring the console in. */
.disc-toggle {
  position: absolute;
  top: 28px;
  right: var(--gutter);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  font-size: 12px;
  animation: float 4s ease-in-out infinite;
  cursor: pointer;
}
/* The middle of the console's wheel, small: a dark disc with the logo's note glowing on it. */
.disc-art {
  position: relative;
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 40%, #1d1d1d, #111 72%);
  /* Lifted off the page: a soft shadow well below it, as if it hovers. */
  box-shadow: 0 22px 26px -14px rgba(0, 0, 0, 0.45);
  transition: transform 0.2s, opacity 0.3s;
}
.disc-art svg { width: 12px; height: 16px; fill: #ff5ea3; filter: drop-shadow(0 0 4px rgba(255, 94, 163, 0.8)); }
.disc-toggle:hover .disc-art { transform: scale(1.06); }
.disc-toggle[aria-expanded="true"] .disc-art { opacity: 0.35; }
@keyframes float { 50% { translate: 0 -4px; } }
@media (prefers-reduced-motion: reduce) { .disc-toggle { animation: none; } }

/* The console itself, sliding in from the right at the app's 606×600 proportions (the volume keys
   stick out past the body's right edge, so the body clips itself, not this box). */
.console {
  position: absolute;
  top: 50%;
  right: calc(var(--gutter) + 88px);
  height: min(calc(100% - 88px), 600px);
  aspect-ratio: 606 / 600;
  transform: translate(calc(100% + 140px), -50%);
  opacity: 0;
  transition: transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.4s;
}
.console-open .console { transform: translate(0, -50%); opacity: 1; }
.console-open .hint { opacity: 0; }
.hint, .play { transition: opacity 0.3s; }

.deck { position: absolute; left: 0; top: 0; width: 606px; height: 600px; transform-origin: 0 0; user-select: none; }
.deck > *, .deck-face > * { position: absolute; }
.deck-face { left: 0; top: 0; width: 600px; height: 600px; border-radius: 16px; overflow: hidden; box-shadow: 0 40px 70px -30px rgba(0, 0, 0, 0.55); }
.deck-body { inset: 0; width: 600px; height: 600px; }
.deck-grain { inset: 0; width: 600px; height: 600px; mix-blend-mode: soft-light; opacity: 0.3; pointer-events: none; }
.deck-screen { left: 12px; top: 24px; width: 576px; height: 300px; border-radius: 6px; box-shadow: inset 0 0 0 2px rgba(0, 0, 0, 0.85); touch-action: none; }
.deck-wheel { border-radius: 50%; touch-action: none; }
.deck-disc { border-radius: 50%; cursor: pointer; }
.deck-disc img { width: 100%; height: 100%; }
/* The logo's note on the disc: upright while the disc turns, pink while sound plays. */
.deck-note {
  position: absolute; left: 50%; top: 50%; width: 15px; height: 20px; margin: -10px 0 0 -7.5px;
  fill: #ff5ea3; filter: drop-shadow(0 0 4px rgba(255, 94, 163, 0.8)); pointer-events: none;
}
.deck-note.off { fill: #292929; filter: none; }
/* Only the strip past the body's edge shows; pressed, a key goes in. */
.deck-side { z-index: 1; left: 590px; width: 16px; padding: 0; border: 0; background: none; overflow: hidden; cursor: pointer; touch-action: none; }
.deck-side img { position: absolute; left: 6px; top: -2px; width: 10px; height: 52px; clip-path: inset(0 0 0 4px); transition: transform 0.12s ease-out; }
.deck-side:active img { transform: translateX(-2px); clip-path: inset(0 0 0 6px); transition-duration: 0.04s; }

/* Guide and install: a panel from the right, like the text column on everyday-practice.com. */
.doc {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
  width: min(600px, 100vw);
  display: grid;
  grid-template-rows: 56px 1fr;
  background: var(--paper);
  border-left: 1px solid var(--ink);
  transform: translateX(100%);
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0s 0.6s;
  visibility: hidden;
}
.doc-open .doc { transform: none; visibility: visible; transition-delay: 0s; }
.doc-open .hint, .doc-open .disc-toggle, .doc-open .play { opacity: 0; pointer-events: none; }
.disc-toggle { transition: opacity 0.3s, right 0.6s cubic-bezier(0.2, 0.8, 0.2, 1); }
/* Wide enough to see the page beside the document: the EQ and the sample stay in reach, so a
   track playing can still be stopped. The disc moves over to the document's edge. */
@media (min-width: 841px) {
  .doc-open .disc-toggle { right: calc(600px + var(--gutter)); opacity: 1; pointer-events: auto; }
  .doc-open .play { opacity: 1; pointer-events: auto; }
}

.doc-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 var(--gutter);
  border-bottom: 1px solid var(--ink);
}
.doc-tabs { display: flex; gap: 28px; font-size: 16px; }
.doc-tabs a { color: var(--mute); }
.doc-tabs a[aria-current="page"] { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
.doc-end { display: flex; align-items: center; gap: 20px; }
.doc-lang { font-size: 16px; color: var(--mute); }
.doc-lang button { padding: 0; border: 0; background: none; font: inherit; color: var(--mute); cursor: pointer; }
.doc-lang button[aria-pressed="true"] { color: var(--ink); }
.doc-close { width: 32px; height: 32px; margin-right: -6px; padding: 6px; border: 0; background: none; color: var(--ink); cursor: pointer; }
.doc-close svg { width: 100%; height: 100%; }

.doc-body {
  overflow: auto;
  padding: 28px var(--gutter) 96px;
  font-size: 15px;
  line-height: 1.75;
  word-break: keep-all;
  overscroll-behavior: contain;
}
.doc-body > * + * { margin-top: 16px; }
.doc-kicker { font-size: 12px; color: var(--mute); letter-spacing: 0.04em; text-transform: uppercase; }
.doc-body h1 { margin-top: 6px; font-size: 32px; font-weight: 600; line-height: 1.25; letter-spacing: -0.03em; }
.doc-lead { font-size: 17px; line-height: 1.65; }
.doc-note { color: var(--mute); font-size: 13px; }
.doc-body a:not(.doc-download) { text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.doc-body b { font-weight: 600; }

.doc-body section { margin-top: 44px; padding-top: 14px; border-top: 1px solid var(--ink); }
.doc-body section > * + * { margin-top: 12px; }
.doc-body h2 { display: flex; gap: 14px; align-items: baseline; font-size: 20px; font-weight: 600; letter-spacing: -0.02em; }
.doc-body h2 span { font-size: 12px; font-weight: 400; color: var(--mute); }

.doc-body dl { display: grid; grid-template-columns: 120px 1fr; }
.doc-body dt, .doc-body dd { padding: 10px 0; border-bottom: 1px solid #e4e4e4; }
.doc-body dt { font-weight: 600; }
.doc-body ul { padding-left: 1.1em; }
.doc-body li + li { margin-top: 6px; }

.doc-steps { list-style: none; counter-reset: step; }
.doc-steps li { counter-increment: step; position: relative; padding: 12px 0 12px 44px; border-bottom: 1px solid #e4e4e4; }
.doc-steps li::before {
  content: counter(step);
  position: absolute; left: 0; top: 13px;
  width: 26px; height: 26px; border: 1px solid var(--ink); border-radius: 50%;
  display: grid; place-items: center; font-size: 12px;
}
.doc-steps li p { margin-top: 2px; color: #333; }

.doc-body code { font: 13px/1.5 ui-monospace, "SF Mono", Menlo, monospace; background: #f2f2f2; padding: 1px 5px; border-radius: 3px; }
kbd { font: 12px ui-monospace, Menlo, monospace; padding: 1px 6px; border: 1px solid #bbb; border-bottom-width: 2px; border-radius: 4px; }

.doc-download, .doc-try {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px; border: 1px solid var(--ink); border-radius: 999px;
  background: var(--ink); color: var(--paper); font: inherit; font-size: 15px; cursor: pointer;
}
.doc-download:hover { background: #333; }
.doc-try { background: none; color: var(--ink); }
.doc-elsewhere > * + *, .doc-after > * + * { margin-top: 12px; }
.doc-after { padding: 16px 18px; border: 1px solid var(--ink); border-radius: 12px; }
.doc-drag { display: block; width: 240px; max-width: 100%; }
.doc-drag rect, .doc-drag path { fill: none; stroke: var(--ink); stroke-width: 1.2; }
.doc-drag text { font-size: 22px; font-weight: 600; text-anchor: middle; fill: var(--ink); }
.doc-drag .arrow { stroke-dasharray: 6 5; animation: drag 1.2s linear infinite; }
@keyframes drag { to { stroke-dashoffset: -11; } }
@media (prefers-reduced-motion: reduce) { .doc-drag .arrow { animation: none; } }
.doc-try:hover { background: var(--ink); color: var(--paper); }

@media (max-width: 600px) {
  .doc-body dl { grid-template-columns: 1fr; }
  .doc-body dt { padding-bottom: 0; border-bottom: 0; }
  .doc-body h1 { font-size: 26px; }
}

@media (max-width: 700px) {
  .disc-art { width: 48px; height: 48px; }
  .console {
    top: auto;
    bottom: 12px;
    right: auto;
    left: 50%;
    height: min(62%, calc((100vw - 32px) * 600 / 606));
    transform: translate(-50%, calc(100% + 40px));
  }
  .console-open .console { transform: translate(-50%, 0); }
  /* The console comes up over it, with its own play key. */
  .console-open .play { opacity: 0; pointer-events: none; }
}

@media (max-width: 600px) {
  /* The chips scroll sideways, clear of the disc up in the corner. */
  #finishes, #horns {
    max-width: calc(100vw - var(--gutter) * 2 - 64px);
    overflow-x: auto;
    scrollbar-width: none;
    touch-action: pan-x;
    mask-image: linear-gradient(to right, #000 85%, transparent);
  }
  #finishes::-webkit-scrollbar, #horns::-webkit-scrollbar { display: none; }
  nav { gap: 18px; font-size: 14px; }
  #models button { padding-right: 18px; font-size: 14px; }
  .caption { flex-direction: column; gap: 0; }
  .hint { left: var(--gutter); right: auto; }
  .play { bottom: 32px; }
}