/* 검은 건반 — 아케이드 게임. 캔버스 1장 + 오버레이 구조.
   팔레트는 블루프린트 7절: 타일 검정 #0B0B0B · 포인트 금색 #F5C542. */
:root {
  --bg: #0b0b0f;
  --ink: #f6f1e6;
  --dim: #a49c8c;
  --gold: #f5c542;
  --gold-deep: #b8860b;
  --pill: #e6dfd0;
  --pill-ink: #322a1c;
}

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

html, body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font: 700 16px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  overscroll-behavior: none;
  touch-action: manipulation;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* ARCADE-FIT: 게임 프레임. 폰에선 화면 전체, 데스크톱에선 가운데 뜬 폰 모양.
   오버레이는 전부 이 안에 `position:absolute` 로 갇힌다 — fixed 를 쓰면 프레임 밖으로 샌다. */
#app {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

main { position: absolute; inset: 0; }

#stage {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

#kbdHint { display: none; }

.overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.2rem;
  background: rgba(6, 6, 10, .84);
}
.overlay[hidden] { display: none; }

.sheet {
  width: 100%;
  max-width: 22rem;
  max-height: 100%;
  overflow-y: auto;
  background: linear-gradient(180deg, #2b2822, #14120f);
  border-radius: 1.4rem;
  padding: 1.5rem 1.3rem;
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, .1), 0 1rem 2rem rgba(0, 0, 0, .55);
}

.sheet h1 { font-size: 1.15rem; margin-bottom: 1rem; color: var(--ink); }
.sheet > div {
  background: rgba(0, 0, 0, .3);
  border-radius: .9rem;
  padding: .6rem;
}

.sheet button {
  width: 100%;
  padding: .95rem;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(180deg, #fff0c0, var(--gold));
  color: #3a2a00;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, .8), inset 0 -3px 0 #c99a12;
  margin-top: .6rem;
}

.sheet button.ghost {
  background: linear-gradient(180deg, #f7f3e8, var(--pill));
  color: var(--pill-ink);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, .9), inset 0 -3px 0 #b7ad98;
}
.sheet button.flat {
  background: none;
  color: var(--dim);
  box-shadow: none;
  font-size: .88rem;
  padding: .55rem;
}
.sheet button.ghost[hidden] { display: none; }

/* ── 결과창 ───────────────────────────────────────── */
.result-sheet { text-align: center; }
.result-sheet h1 { margin-bottom: .35rem; }

#result-stats {
  color: #fff;
  margin: .9rem 0;
  background: rgba(0, 0, 0, .32);
}
.score-big {
  font-size: 2.9rem;
  font-weight: 800;
  line-height: 1;
  color: var(--gold);
  text-shadow: 0 .2rem .8rem rgba(0, 0, 0, .5);
}
.score-big span { color: #4b442f; }
.score-best {
  margin-top: .4rem;
  font-size: .85rem;
  font-weight: 700;
  color: var(--dim);
}

#result-why {
  margin-bottom: 1rem;
  color: var(--dim);
  font-size: .9rem;
  font-weight: 600;
}

/* 이어하기는 결과창의 주인공 버튼이다. */
.sheet button#revive {
  background: linear-gradient(180deg, #ffe98a, var(--gold));
  color: #3a2a00;
  font-size: 1.05rem;
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, .85), inset 0 -3px 0 #c08a00,
    0 .35rem 1.1rem rgba(245, 197, 66, .45);
  animation: gold 1.8s ease-in-out infinite;
}
@keyframes gold {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.035); }
}

/* ── 지연 보정 ────────────────────────────────────── */
.calib-sheet { text-align: center; }
.calib-help {
  color: var(--dim);
  font-size: .85rem;
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: .9rem;
}
.calib-row {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: .8rem .7rem;
}
#calibRange {
  flex: 1;
  accent-color: var(--gold);
  height: 1.6rem;
}
#calibValue {
  min-width: 4.2rem;
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  color: var(--gold);
}

/* ── 홈 ───────────────────────────────────────────── */
.home-sheet {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  align-items: center;
  justify-content: flex-start;
  text-align: center;
  max-width: 21rem;
  height: 100%;
  background: none;
  box-shadow: none;
  padding: .9rem .6rem;
  overflow: hidden;
}
.home-sheet > div { background: none; padding: 0; }

.home-head {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
}
.home-title {
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: .01em;
  color: #fff;
  line-height: 1;
  margin: 0;
  text-shadow: 0 .16rem 0 #2a220c, 0 0 1.4rem rgba(245, 197, 66, .55);
  cursor: pointer;
}
.home-sheet h1.home-title { margin-bottom: 0; }

#homeHero {
  width: 3rem;
  height: 3rem;
  cursor: pointer;
  filter: drop-shadow(0 .4rem .9rem rgba(0, 0, 0, .6));
}

#homeInfo {
  display: flex;
  flex-wrap: nowrap;
  min-width: 0;
  gap: .4rem;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin: .1rem 0;
}
#homeLevel {
  white-space: nowrap;
  padding: .32rem .8rem;
  border-radius: 999px;
  background: rgba(40, 36, 28, .8);
  color: var(--ink);
  font-size: .88rem;
  font-weight: 800;
}
#homeInfo button {
  flex: 0 0 auto;
  width: auto;                    /* .sheet button 의 width:100% 를 끈다 */
  margin: 0;
  white-space: nowrap;
  padding: .32rem .75rem;
  border: 0;
  border-radius: 999px;
  background: rgba(40, 36, 28, .8);
  color: var(--gold);
  font: inherit;
  font-size: .82rem;
  font-weight: 800;
  cursor: pointer;
}
#homeInfo button[hidden] { display: none; }

/* 곡 목록 — 홈의 본문. 남는 세로를 다 쓰고 안에서만 스크롤한다. */
#songList {
  flex: 1 1 auto;
  -webkit-mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 1.2rem), transparent 100%);
  mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 1.2rem), transparent 100%);
  width: 100%;
  min-height: 4rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: .3rem;
  padding: .15rem .1rem;
  scrollbar-width: none;
}
#songList::-webkit-scrollbar { display: none; }

/* 왼쪽 금색 막대는 box-shadow inset 으로 낸다. border-left + border-radius 로 하면
   모서리에서 테두리가 휘어 **잠긴 곡까지 금테를 두른 것처럼** 보였다(2026-09-09 캡처). */
#songList .song-row {
  width: 100%;
  margin: 0;
  display: flex;
  align-items: center;
  gap: .5rem;
  width: 100%;
  padding: .5rem .7rem .5rem .85rem;
  border: 1px solid rgba(255, 255, 255, .07);
  border-radius: .55rem;
  box-shadow: inset 3px 0 0 var(--gold);
  background: rgba(26, 24, 20, .9);
  color: var(--ink);
  font: inherit;
  font-size: .88rem;
  text-align: left;
  cursor: pointer;
}
#songList .song-row.locked {
  box-shadow: inset 3px 0 0 #524d3f;
  color: #857e6e;
  background: rgba(18, 17, 14, .85);
  border-color: rgba(255, 255, 255, .04);
}
#songList .song-row.on {
  background: linear-gradient(90deg, rgba(96, 78, 26, .95), rgba(46, 39, 18, .95));
  box-shadow: inset 3px 0 0 #fff0b0;
  border-color: rgba(245, 197, 66, .45);
  color: #fff8e2;
}
#songList .song-row.on .s-by { color: #d6c79a; }
#songList .song-row .s-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#songList .song-row .s-by { display: block; font-size: .68rem; font-weight: 600; color: #857d6c; }
#songList .song-row .s-stars { color: var(--gold); letter-spacing: -1px; font-size: .8rem; }
#songList .song-row .s-tag {
  font-size: .68rem;
  font-weight: 800;
  padding: .15rem .4rem;
  border-radius: .4rem;
  background: rgba(245, 197, 66, .16);
  color: var(--gold);
}
#songList .song-row.locked .s-tag { background: rgba(255, 255, 255, .07); color: #8b8474; }

#homeMain { width: 100%; flex: 0 0 auto; }
#homeTabs, .home-head, #homeInfo { flex: 0 0 auto; }

#tapToStart {
  display: block;
  width: 100%;
  padding: .85rem 1rem;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(180deg, #ffe98a, var(--gold));
  color: #3a2a00;
  font: inherit;
  font-size: 1.2rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, .85), inset 0 -4px 0 #c08a00,
    0 .4rem 1.2rem rgba(245, 197, 66, .38);
  animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

.carousel {
  display: flex;
  flex: 0 0 auto;                 /* 곡 목록이 flex:1 이라 안 잡아두면 칩이 잘린다 */
  align-items: center;
  gap: .4rem;
  width: 100%;
  min-height: 3rem;
  overflow-x: auto;
  padding: .25rem .1rem;
  scrollbar-width: none;
}
.carousel::-webkit-scrollbar { display: none; }

.home-sheet .skin-chip {
  flex: 0 0 auto;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 2px solid rgba(255, 255, 255, .22);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 32%, color-mix(in srgb, var(--chip) 60%, #fff), var(--chip));
  cursor: pointer;
  overflow: hidden;
  display: grid;
  place-items: center;
}
/* hero.webp 는 검은 타일이라 ahome.js 의 hue-rotate(파랑 210° 기준)와 무관하다.
   칩의 색은 원형 배경(--chip)이 내고, 타일은 형태만 얹는다(B조 방식). */
.home-sheet .skin-chip img {
  filter: grayscale(1) contrast(1.2) brightness(1.25) !important;
  mix-blend-mode: luminosity;
  width: 82%;
  margin: 0;
}
.home-sheet .skin-chip.on { border-color: #fff; box-shadow: 0 0 0 3px rgba(245, 197, 66, .75); }
.home-sheet .skin-chip.locked { opacity: .36; }

#homeTabs {
  display: flex;
  gap: .45rem;
  width: 100%;
  margin-top: .1rem;
}

.home-sheet .tab-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .12rem;
  padding: .45rem .3rem;
  border: 0;
  border-radius: .8rem;
  background: rgba(40, 36, 28, .7);
  color: #e8e1d2;
  font: inherit;
  font-size: .78rem;
  font-weight: 700;
  cursor: pointer;
  backdrop-filter: blur(4px);
}
.home-sheet .tab-btn b { font-size: 1.1rem; line-height: 1; font-weight: 400; }
.home-sheet .tab-btn:active, .home-sheet .tab-btn.active { background: var(--gold); color: #3a2a00; }

.panel { width: 100%; color: var(--ink); font-size: .9rem; }
.shop-row, .mission-row {
  display: flex;
  justify-content: space-between;
  padding: .5rem .7rem;
  margin-bottom: .3rem;
  border-radius: .6rem;
  background: rgba(40, 36, 28, .75);
}
.sheet .panel .back {
  width: 100%;
  margin-top: .5rem;
  padding: .7rem;
  border: 0;
  border-radius: 999px;
  background: var(--gold);
  color: #3a2a00;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

/* 홈 배경 — 힉스필드 테마 배경. url 은 CSS 파일 기준 ../ (pipes 함정). */
#home {
  background-image:
    linear-gradient(180deg, rgba(11, 11, 15, .42), rgba(6, 6, 10, .82)),
    url("../assets/bg-piano.webp");
  background-size: cover;
  background-position: center;
}

/* ── 데스크톱 = 가운데 뜬 폰 프레임 ─────────────────── */
@media (min-width: 768px) and (min-height: 600px) {
  body {
    background: radial-gradient(120% 90% at 50% 0%, #3a3222 0%, #1a170f 45%, #07070a 100%);
    gap: 1rem;
  }
  #app {
    width: min(420px, calc((100vh - 72px) * 360 / 640));
    height: min(calc(100vh - 72px), calc(420px * 640 / 360));
    border-radius: 32px;
    box-shadow: 0 0 0 10px #171410, 0 0 0 12px #4a3f22, 0 40px 90px rgba(0, 0, 0, .65);
  }
  #stage { border-radius: 32px; }
  #kbdHint {
    display: block;
    margin: 0;
    color: var(--dim);
    font-size: .85rem;
    font-weight: 600;
    letter-spacing: .01em;
  }
}

/* 세로 전용 */
#rotate { display: none; }
@media (orientation: landscape) and (max-height: 520px) {
  #app, #kbdHint { display: none !important; }
  #rotate {
    display: flex;
    position: fixed;
    inset: 0;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    color: var(--dim);
    font-size: 1.05rem;
    line-height: 1.6;
  }
}

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