/* coldlapse.dev
   Cold, overcast paper. Colours sampled from the Coldlapse jacket (frost, glacier blue, cobalt).
   The hero is laid out like a beatmania IIDX song-select entry; its lamp colour comes from beatmania.app. */

:root {
  --grad-fc: linear-gradient(180deg, #ffffff 0%, #9fe7ff 35%, #3a78ff 70%, #bfeeff 100%);
  --grad-exh: linear-gradient(180deg, #fff06a 0%, #ffc233 40%, #ff4a3d 100%);
  --sans: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", monospace;
  --display: "Barlow Condensed", "Arial Narrow", sans-serif;

  --paper: #eef1f5;
  --paper-2: #e3e8ef;
  --ink: #17203a;
  --ink-2: #3a4560;
  --muted: #69748d;
  --rule: #c8d0db;
  --rule-soft: #d9dfe7;
  --accent: #2a45b5;
  --frost: #b9d0e8;
  --spark: #5d8fd6;
  --figure: #0f1424;

  --lamp-fc: #00cccc;

  --measure: 40rem;
  --wide: 68rem;
  --gutter: clamp(16px, 5vw, 48px);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0d1326; --paper-2: #121a33; --ink: #e2e8f3; --ink-2: #b9c3d8; --muted: #8290ad;
    --rule: #26324f; --rule-soft: #1b2540; --accent: #9db6ff; --frost: #2a3c66; --figure: #070b17; --spark: #8fb8ff;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0d1326; --paper-2: #121a33; --ink: #e2e8f3; --ink-2: #b9c3d8; --muted: #8290ad;
  --rule: #26324f; --rule-soft: #1b2540; --accent: #9db6ff; --frost: #2a3c66; --figure: #070b17; --spark: #8fb8ff;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 64px; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 16.5px/1.75 var(--sans);
  word-break: keep-all; overflow-wrap: break-word; overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
html[lang="en"] body { word-break: normal; }
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2, h3, h4, h5, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, video, canvas { display: block; max-width: 100%; }
code { font-family: var(--mono); font-size: 0.86em; }

.wrap { max-width: var(--wide); margin: 0 auto; padding: 0 var(--gutter); }

/* ---- header ---- */
.top { border-bottom: 1px solid var(--rule); background: var(--paper); position: sticky; top: 0; z-index: 10; }
.top .wrap { display: flex; align-items: center; gap: 20px; height: 56px; }
.top .name { font: 700 1.2rem/1 var(--display); letter-spacing: 0.04em; color: var(--ink); text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.top .name::before { content: ""; width: 4px; height: 18px; background: var(--grad-fc); }
.top nav { display: flex; gap: 18px; margin-left: auto; font-size: 0.9rem; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--ink); }
.toggles { display: flex; gap: 12px; font: 500 0.8rem/1 var(--mono); }
.toggles button { background: none; border: 0; padding: 4px 0; color: var(--muted); cursor: pointer; font: inherit; }
.toggles button:hover { color: var(--ink); }
.toggles .on { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 820px) { .top nav { display: none; } .toggles { margin-left: auto; } }

/* ---- hero: the only place with weather ---- */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--rule); background: linear-gradient(180deg, var(--paper-2), var(--paper)); }
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hero .wrap { position: relative; padding-top: clamp(64px, 12vw, 136px); padding-bottom: clamp(48px, 8vw, 88px); }
/* hero title styled as a beatmania IIDX song-select entry */
.songbar { display: grid; grid-template-columns: 10px minmax(0, 1fr) auto; gap: 0 clamp(14px, 2.4vw, 24px); align-items: stretch; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding: 18px 0; }
.songlamp { background: var(--grad-fc); }
.genre { font: 600 0.78rem/1 var(--display); letter-spacing: 0.14em; color: var(--muted); }
.hero h1 { font: 600 clamp(3.2rem, 9vw, 5.8rem)/0.95 var(--display); letter-spacing: 0.03em; color: var(--ink); margin: 8px 0 6px; white-space: nowrap; position: relative; display: inline-block; padding-left: 0.04em; margin-right: 0.3em; }
/* four-point sparkles, after the ornament on the Coldlapse jacket logo */
.hero h1 .spark { position: absolute; color: var(--spark); }
.hero h1 .s1 { width: 0.33em; height: 0.33em; left: -0.15em; top: -0.1em; }
.hero h1 .s2 { width: 0.17em; height: 0.17em; right: -0.2em; top: 0.44em; opacity: 0.7; }
.artist { font: 500 1rem/1.3 var(--display); letter-spacing: 0.06em; color: var(--ink-2); }
html[lang="ko"] .artist { font-family: var(--sans); letter-spacing: 0; font-size: 0.95rem; }
.level { display: grid; align-content: center; gap: 6px; justify-items: end; text-align: right; padding-left: clamp(12px, 2vw, 20px); border-left: 1px solid var(--rule-soft); }
.level .diff { font: 700 0.8rem/1 var(--display); letter-spacing: 0.16em; color: var(--accent); }
.level .diff.sub { color: var(--muted); }
.level .role { font: 700 clamp(1.4rem, 2.6vw, 1.85rem)/1.05 var(--display); color: var(--ink); white-space: nowrap; }
@media (max-width: 1000px) { .songbar { grid-template-columns: 8px 1fr; } .level { grid-column: 2; justify-items: start; text-align: left; border-left: 0; padding: 12px 0 0; display: flex; gap: 12px; align-items: baseline; } }
.hero .lede { margin-top: 28px; max-width: 34rem; font-size: clamp(1.05rem, 2.2vw, 1.2rem); color: var(--ink-2); }
.hero .contact { margin-top: 20px; font-size: 0.95rem; color: var(--muted); }
.hero .contact a { margin-right: 14px; }
.now { margin-top: 44px; max-width: 34rem; border-left: 2px solid var(--frost); padding-left: 14px; font-size: 0.92rem; color: var(--muted); }

/* ---- sections ---- */
section { padding: clamp(56px, 9vw, 104px) 0 0; }
section > .wrap > h2 { font-size: 0.95rem; font-weight: 600; color: var(--muted); letter-spacing: 0.02em; padding-bottom: 12px; border-bottom: 1px solid var(--rule); margin-bottom: 36px; }
.prose { max-width: var(--measure); display: grid; gap: 1.1em; color: var(--ink-2); }
.prose strong { color: var(--ink); font-weight: 600; }


/* ---- case studies ---- */
.case { padding: 0 0 clamp(56px, 8vw, 96px); }
.case + .case { border-top: 1px solid var(--rule-soft); padding-top: clamp(48px, 7vw, 80px); }
.case-head { display: grid; gap: 8px; max-width: 48rem; }
.case-head h3 { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 600; letter-spacing: -0.015em; display: flex; align-items: center; gap: 14px; line-height: 1.2; }
.case-head .one { font-size: 1.12rem; color: var(--ink-2); }
.case-head .meta { font-size: 0.88rem; color: var(--muted); }
.case-head .links { font-size: 0.92rem; display: flex; flex-wrap: wrap; gap: 4px 16px; }

figure.shot { margin: 32px 0 36px; }
figure.shot .frame { background: var(--figure); border-radius: 6px; overflow: hidden; }
figure.shot img, figure.shot video { width: 100%; height: auto; }
figure.shot figcaption { margin-top: 10px; font-size: 0.84rem; color: var(--muted); max-width: var(--measure); }
.shot-pair { display: grid; grid-template-columns: 1.35fr 1fr; gap: 12px; align-items: start; }
@media (max-width: 760px) { .shot-pair { grid-template-columns: 1fr; } }
.video-frame { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; padding: clamp(12px, 3vw, 28px); }
figure.shot .video-frame video { width: min(100%, 440px); border-radius: 4px; }
.lead-shot { margin: 0 0 clamp(24px, 4vw, 40px); }
.lead-shot img { display: block; width: 100%; height: auto; border-radius: 6px; background: var(--figure); }
.chart-frame { padding: clamp(10px, 2vw, 18px) clamp(6px, 1.5vw, 14px) 4px; }
.weekly { display: block; width: 100%; height: auto; font-family: var(--mono); }
.weekly .ax { font-size: 10px; fill: #8290ad; }
.weekly .lb { font-size: 11px; font-weight: 600; fill: #e2e8f3; font-family: var(--sans); }



/* ---- pixel demo ---- */
.pxdemo { background: var(--figure); color: #cfd8ea; border-radius: 6px; padding: clamp(14px, 2vw, 20px); }
.pxdemo .row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; align-items: start; }
@media (max-width: 640px) { .pxdemo .row { grid-template-columns: 1fr; } }
.pxdemo .cell { display: grid; gap: 8px; }
.pxdemo .stage { min-height: 150px; overflow: hidden; display: grid; place-items: center; border-radius: 4px; padding: 4px;
  background: repeating-conic-gradient(#161d31 0 25%, #11172a 0 50%) 0 0 / 16px 16px; }
.pxdemo canvas { image-rendering: pixelated; image-rendering: crisp-edges; max-width: none; flex: none; }
.pxdemo .label { font: 500 0.82rem/1.4 var(--sans); color: #9fb0d0; }
.pxdemo .label b { color: #e6ecf8; font-weight: 600; }
.pxdemo .widths { font: 400 0.76rem/1.5 var(--sans); color: #8391b4; min-height: 3em; }
.pxdemo .ctl { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; margin-bottom: 18px; font: 500 0.85rem/1 var(--sans); }
.pxdemo input[type=range] { flex: 1 1 200px; accent-color: #9db6ff; }
.pxdemo .scale { color: #fff; min-width: 4.5em; }
.pxdemo .note { margin-top: 14px; font-size: 0.82rem; color: #8391b4; }



/* ---- lists ---- */
.plain li { padding: 12px 0; border-bottom: 1px solid var(--rule-soft); display: grid; grid-template-columns: 7rem minmax(0, 1fr); gap: 18px; }
.plain .k { font: 400 0.82rem/1.9 var(--mono); color: var(--muted); }
.plain .v { color: var(--ink-2); }
.plain .v b { color: var(--ink); font-weight: 600; }
.plain .v small { display: block; color: var(--muted); font-size: 0.86rem; }
@media (max-width: 560px) { .plain li { grid-template-columns: 1fr; gap: 2px; } }

footer { margin-top: clamp(72px, 10vw, 120px); border-top: 1px solid var(--rule); padding: 28px 0 48px; font-size: 0.86rem; color: var(--muted); }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }

/* hero: text left, plain facts right */
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 20rem); gap: 40px clamp(32px, 6vw, 80px); align-items: end; }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } }
.facts { border-top: 1px solid var(--rule); font-size: 0.9rem; }
.facts > div { display: grid; grid-template-columns: 4.5rem minmax(0, 1fr); gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--rule-soft); }
.facts dt { color: var(--muted); }
.facts dd { color: var(--ink-2); }
.facts a { color: var(--ink-2); }
.facts a:hover { color: var(--accent); }


/* ---- clear lamps (beatmania IIDX INFINITAS music select) ---- */
.lamp, .bar { display: inline-block; flex: none; background: #999; }
[data-l="fc"] { background: var(--grad-fc); }
[data-l="exh"] { background: var(--grad-exh); }
[data-l="hard"] { background: #ffffff; box-shadow: inset 0 0 0 1px var(--rule); }
[data-l="clear"] { background: #4db3ff; }
[data-l="easy"] { background: #74cf4a; }
.case-head h3 .lamp { width: 12px; height: 1.05em; }
.song .bar { align-self: stretch; width: 6px; }
.legend { margin: -16px 0 36px; font-size: 0.86rem; color: var(--muted); }
.legend ul { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-bottom: 8px; }
.legend li { display: inline-flex; align-items: center; gap: 8px; }
.legend .lamp { width: 10px; height: 14px; }
.legend b { font: 700 0.8rem/1 var(--display); letter-spacing: 0.08em; color: var(--ink); }
.legend p { font-size: 0.82rem; }

/* ---- concise landing layout ---- */
.glance-strip { border-bottom: 1px solid var(--rule); }
.glance-strip ul { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); }
.glance-strip li { padding: 22px 0; display: grid; gap: 2px; }
.glance-strip li + li { padding-left: 20px; border-left: 1px solid var(--rule-soft); }
.glance-strip .n { font: 700 1.9rem/1 var(--display); color: var(--ink); }
.glance-strip .v { font-size: 0.84rem; color: var(--muted); }
@media (max-width: 760px) { .glance-strip ul { grid-template-columns: repeat(2, minmax(0, 1fr)); } .glance-strip li + li { padding-left: 0; border-left: 0; } .glance-strip li { padding: 14px 0; } }

.case-head { margin-bottom: 24px; }
.case-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 48px); align-items: start; }
.case-grid figure.shot { margin: 0; }
@media (max-width: 900px) { .case-grid { grid-template-columns: 1fr; } }
.wins { display: grid; gap: 0; border-top: 1px solid var(--rule); }
.wins li { padding: 12px 0 12px 18px; border-bottom: 1px solid var(--rule-soft); position: relative; color: var(--ink-2); font-size: 0.97rem; }
.wins li::before { content: ""; position: absolute; left: 2px; top: 1.15em; width: 6px; height: 6px; background: var(--spark); transform: rotate(45deg); }

.poly { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
@media (max-width: 860px) { .poly { grid-template-columns: 1fr; } }
.poly h3 { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 600; display: flex; align-items: center; gap: 14px; line-height: 1.2; margin-bottom: 8px; }
.poly h3 .lamp { width: 12px; height: 1.05em; }
.poly .one { font-size: 1.05rem; color: var(--ink-2); }
.poly-link { margin-top: 14px; font-weight: 600; }
.stack-line { margin-top: 14px; font-size: 0.86rem; color: var(--muted); }

section > .wrap > h2 + .songs, section > .wrap > h2 + .plain { margin-top: -22px; }
.song { display: grid; grid-template-columns: 6px minmax(0, 14rem) minmax(0, 1fr) 5.5rem minmax(0, 11rem); gap: 18px; align-items: baseline; padding: 14px 0; border-bottom: 1px solid var(--rule-soft); }
.song .bar { align-self: stretch; }
.song .title { font-weight: 600; }
.song .line { color: var(--ink-2); font-size: 0.95rem; }
.song .yr { font: 400 0.8rem/1.6 var(--mono); color: var(--muted); text-align: right; }
.song .lk { display: flex; flex-wrap: wrap; gap: 2px 12px; font-size: 0.88rem; }
@media (max-width: 860px) {
  .song { grid-template-columns: 6px 1fr auto; gap: 4px 14px; }
  .song .bar { grid-row: 1 / 4; }
  .song .line { grid-column: 2 / 4; }
  .song .lk { grid-column: 2 / 4; }
}
.lead-line { max-width: 44rem; color: var(--ink-2); }

.nw { white-space: nowrap; }

/* marks numbers fetched live (GitHub API, beatmania.app summary); fallback values get no mark */
.live { display: inline-flex; align-items: center; gap: 4px; margin-left: 8px; vertical-align: 0.2em;
  font: 600 0.6rem/1 var(--mono); letter-spacing: 0.08em; color: var(--muted); }
.live::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: #00b8b8; }
.glance-strip .live { vertical-align: 0.9em; }