/* ChordTool Backing — 모바일 퍼스트. 테마: 재생 블루 · 앰프 오렌지 */
:root {
  --bg: #f6f8fc; --surface: #ffffff; --surface-2: #eef2f9; --text: #141a26; --muted: #5b6477; --line: #dce2ee;
  --accent: #ff7a00; --accent-ink: #ffffff; --accent-soft: #fff0e0;
  --blue: #1b5fe0; --blue-ink: #ffffff; --blue-soft: #e4ecfd; --now: #ffd24d; --loop: #7c4dff; --loop-soft: #efe9ff;
  --radius: 14px; --player-h: 76px; color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d121c; --surface: #161d2b; --surface-2: #1f2839; --text: #eef1f7; --muted: #9aa3b5; --line: #2a3346;
    --accent: #ff9a3c; --accent-ink: #1a0d00; --accent-soft: #3a2410; --blue: #6c9dff; --blue-ink: #0a1430; --blue-soft: #172649;
    --now: #f2c94c; --loop: #a98bff; --loop-soft: #2a2248; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0d121c; --surface: #161d2b; --surface-2: #1f2839; --text: #eef1f7; --muted: #9aa3b5; --line: #2a3346;
  --accent: #ff9a3c; --accent-ink: #1a0d00; --accent-soft: #3a2410; --blue: #6c9dff; --blue-ink: #0a1430; --blue-soft: #172649;
  --now: #f2c94c; --loop: #a98bff; --loop-soft: #2a2248; color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif; word-break: keep-all; overflow-wrap: anywhere; }
body.has-player { padding-bottom: calc(var(--player-h) + env(safe-area-inset-bottom)); }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 .5em; }
h1 { font-size: 1.45rem; }
h1 small { font-size: .9rem; color: var(--muted); font-weight: 600; }
h2 { font-size: 1.1rem; }
h3 { font-size: 1rem; margin-top: 1em; }
h4 { font-size: .85rem; color: var(--muted); margin: 14px 0 6px; }
p { margin: 0 0 .8em; }
.wrap { width: 100%; max-width: 1000px; margin: 0 auto; padding: 0 16px; }
.lead { color: var(--muted); }
.hint { color: var(--muted); font-size: .85rem; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
.mt { margin-top: 18px; }
[hidden] { display: none !important; }
button, input, select { font: inherit; color: inherit; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 30; background: var(--bg); border-bottom: 1px solid var(--line); }
.header-bar { display: flex; align-items: center; gap: 10px; height: 52px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand img { display: block; height: 32px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text b { font-size: 1.02rem; letter-spacing: -.02em; }
.brand-text small { font-size: .7rem; color: var(--accent); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.header-nav { display: none; margin-left: auto; gap: 4px; }
.header-nav a { padding: 8px 12px; border-radius: 10px; color: var(--text); font-weight: 600; font-size: .95rem; }
.icon-btn { margin-left: auto; width: 44px; height: 44px; display: grid; place-items: center; border: 0; background: none; color: var(--text); border-radius: 10px; cursor: pointer; }
.icon-btn svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.header-menu { display: flex; flex-wrap: wrap; gap: 6px; padding-bottom: 12px; }
.header-menu a { padding: 10px 12px; border-radius: 10px; background: var(--surface-2); color: var(--text); font-size: .92rem; }
@media (min-width: 760px) { .header-nav { display: flex; } .icon-btn { margin-left: 4px; } }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; font-size: .8rem; color: var(--muted); padding: 10px 0 2px; }
.breadcrumb a { color: var(--muted); }
main.wrap { padding-top: 12px; padding-bottom: 32px; }
.tool-title { font-size: 1.3rem; }

/* 공통 */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin: 16px 0; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 0 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); color: var(--text); font-weight: 700; font-size: .92rem; cursor: pointer; text-decoration: none; }
.btn:hover { text-decoration: none; border-color: var(--blue); }
.btn.primary { background: var(--blue); border-color: var(--blue); color: var(--blue-ink); }
.btn.danger { color: #d62839; }
.link-btn { border: 0; background: none; padding: 0 4px; color: var(--blue); font-weight: 700; cursor: pointer; text-decoration: underline; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 4px; min-height: 40px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--text); font-weight: 600; font-size: .9rem; cursor: pointer; text-decoration: none; white-space: nowrap; }
.chip:hover { text-decoration: none; border-color: var(--blue); }
.chip.on, .chip[aria-pressed="true"] { background: var(--blue); border-color: var(--blue); color: var(--blue-ink); }
.chip:disabled { opacity: .4; cursor: not-allowed; }
.chip small { color: inherit; opacity: .7; font-weight: 700; }
.chips.sm .chip { min-height: 36px; padding: 0 11px; font-size: .85rem; }
.more-link { margin: 12px 0 0; display: flex; gap: 8px; flex-wrap: wrap; }

/* 편집기 */
.tool { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; margin: 12px 0 16px; }
.bk-head { display: grid; gap: 10px; margin-bottom: 12px; }
.bk-head .row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.field { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; font-size: .9rem; }
.field select, .bpm-in, .ramp input, .search input { height: 44px; padding: 0 10px; border-radius: 10px; border: 1.5px solid var(--line); background: var(--surface); color: var(--text); font-size: .95rem; }
.bpm-in { width: 76px; text-align: center; font-weight: 800; font-size: 1.1rem; }
.sq { min-width: 44px; height: 44px; padding: 0 10px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface-2); color: var(--text); font-weight: 800; cursor: pointer; }
.sq.tap { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.tp { display: inline-flex; gap: 4px; margin-left: auto; }
.bk-head input[type=range] { width: 100%; accent-color: var(--blue); height: 28px; }

.bars { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
@media (min-width: 480px) { .bars { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.bar-card { position: relative; min-height: 72px; padding: 18px 8px 8px; border-radius: 12px; border: 1.5px solid var(--line); background: var(--surface-2); cursor: pointer; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; touch-action: manipulation; transition: background .12s, border-color .12s, transform .12s; }
.bar-card:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }
.bar-no { position: absolute; top: 4px; left: 8px; font-size: .7rem; font-weight: 800; color: var(--muted); }
.bar-chords { display: flex; gap: 4px; }
.bc { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; }
.bc b { font-size: 1.15rem; line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }
.bc small { font-size: .7rem; color: var(--muted); font-weight: 700; }
.multi .bc b { font-size: .95rem; }
.multi .bc + .bc { border-left: 1px dashed var(--line); }
.bar-card.in-loop { border-color: var(--loop); background: var(--loop-soft); }
.loop-tag { position: absolute; top: 2px; right: 8px; color: var(--loop); font-weight: 800; font-size: .8rem; }
.bar-card.now { border-color: var(--accent); background: var(--accent-soft); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 30%, transparent); transform: scale(1.02); }
.bar-card.now .bc b { color: var(--accent); }
.bar-tools { display: flex; gap: 8px; margin: 10px 0 6px; }
.bar-tools .primary { flex: 1; }
.loop-info { color: var(--loop); font-weight: 700; font-size: .9rem; }
.blk { margin-top: 16px; }
.blk-t { font-size: .95rem; margin-bottom: 8px; }
.style-desc { margin-top: 8px; }
.insts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
@media (min-width: 640px) { .insts { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.inst { display: flex; flex-direction: column; gap: 2px; padding: 6px 8px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface-2); }
.inst.on { border-color: var(--blue); background: var(--blue-soft); }
.inst-tg { display: flex; align-items: center; gap: 8px; min-height: 36px; border: 0; background: none; font-weight: 700; cursor: pointer; padding: 0; text-align: left; }
.box { width: 22px; height: 22px; display: grid; place-items: center; border-radius: 6px; border: 2px solid var(--line); background: var(--surface); font-size: .8rem; color: var(--blue-ink); }
.inst.on .box { background: var(--blue); border-color: var(--blue); }
.inst input[type=range] { width: 100%; accent-color: var(--blue); }
.inst input:disabled { opacity: .35; }
details.practice { border: 1px solid var(--line); border-radius: 12px; padding: 0 12px; }
details.practice summary { min-height: 48px; display: flex; align-items: center; gap: 8px; font-weight: 800; cursor: pointer; }
details.practice summary small { color: var(--accent); font-weight: 700; }
.prac { display: flex; flex-wrap: wrap; gap: 10px 14px; padding: 0 0 14px; align-items: center; }
.check { display: inline-flex; align-items: center; gap: 6px; min-height: 40px; font-weight: 600; cursor: pointer; }
.check input { width: 20px; height: 20px; accent-color: var(--blue); }
.ramp { border: 1px dashed var(--line); border-radius: 10px; padding: 6px 10px 10px; display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: .9rem; width: 100%; }
.ramp legend { padding: 0 4px; }
.ramp input { width: 64px; height: 38px; }
.file-tools { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.file-tools .btn { flex: 1 1 auto; min-height: 40px; font-size: .85rem; padding: 0 10px; }
.file-in { position: relative; }
.drum-note { margin-top: 8px; }

/* 하단 재생 바 */
.player-bar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 40; display: flex; align-items: center; gap: 12px; height: calc(var(--player-h) + env(safe-area-inset-bottom)); padding: 8px 16px calc(8px + env(safe-area-inset-bottom)); background: var(--surface); border-top: 1px solid var(--line); box-shadow: 0 -6px 20px rgba(0,0,0,.08); }
.play-btn { flex: none; width: 60px; height: 60px; border-radius: 50%; border: 0; background: var(--blue); color: var(--blue-ink); display: grid; place-items: center; cursor: pointer; box-shadow: 0 4px 14px color-mix(in srgb, var(--blue) 40%, transparent); }
.play-btn svg { width: 28px; height: 28px; fill: currentColor; }
.play-btn[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }
body:not(.audio-ready) .play-btn { opacity: .85; }
.now-box { flex: 1; min-width: 0; }
.now-chord { font-size: 1.7rem; font-weight: 900; line-height: 1.1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.beats { display: flex; gap: 4px; font-size: .8rem; color: var(--muted); min-height: 1.2em; }
.beats i { font-style: normal; }
.beats i.on { color: var(--accent); }
.next-box { flex: none; display: flex; flex-direction: column; align-items: flex-end; min-width: 76px; text-align: right; line-height: 1.15; }
.next-box small { font-size: .7rem; color: var(--muted); font-weight: 700; }
.next-chord { font-size: 1.2rem; color: var(--blue); }
@media (min-width: 1000px) { .player-bar { left: 50%; transform: translateX(-50%); max-width: 968px; border: 1px solid var(--line); border-bottom: 0; border-radius: 16px 16px 0 0; } }

/* 마디 시트 */
.bs-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding-right: 36px; }
.bs-head h3 { margin: 0; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.seg button { min-height: 38px; padding: 0 12px; border: 0; background: var(--surface); cursor: pointer; font-weight: 700; font-size: .85rem; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button[aria-pressed="true"] { background: var(--blue); color: var(--blue-ink); }
.slot-row { display: flex; gap: 6px; margin: 12px 0 4px; }
.slot { flex: 1; display: flex; flex-direction: column; align-items: center; min-height: 52px; border-radius: 10px; border: 1.5px solid var(--line); background: var(--surface-2); cursor: pointer; }
.slot small { font-size: .7rem; color: var(--muted); }
.slot.on { border-color: var(--accent); background: var(--accent-soft); }
.grid { display: grid; gap: 6px; }
.grid.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid button { min-height: 44px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); font-weight: 700; cursor: pointer; font-size: .92rem; padding: 0 4px; }
.grid button[aria-pressed="true"] { background: var(--blue); border-color: var(--blue); color: var(--blue-ink); }
.bass-sel { margin-top: 12px; }
.search { display: flex; gap: 6px; margin-top: 14px; }
.search input { flex: 1; min-width: 0; }
.chord-info { margin-top: 14px; padding: 12px; border-radius: 12px; background: var(--surface-2); font-size: .9rem; }
.chord-info .chips { margin-top: 6px; }
.bs-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.bs-actions .btn { flex: 1 1 auto; min-height: 40px; font-size: .85rem; }

/* 목록 · 분석 */
.prog-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
@media (min-width: 640px) { .prog-list { grid-template-columns: 1fr 1fr; } }
.prog-list a { display: flex; flex-direction: column; padding: 10px 12px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface-2); color: var(--text); }
.prog-list a:hover { text-decoration: none; border-color: var(--blue); }
.prog-list b { font-size: 1.02rem; }
.prog-list small { color: var(--muted); font-size: .8rem; }
.fn-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.fn-table th, .fn-table td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
.fn-table thead th { color: var(--muted); font-size: .8rem; }
.fn-table tbody th { white-space: nowrap; }
.moves, .inst-notes, .songs { padding-left: 18px; margin: 0; }
.moves li, .inst-notes li, .songs li { margin-bottom: 6px; }
.moves span { color: var(--muted); font-size: .9rem; }
.learn { display: grid; gap: 6px; }
.learn-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 6px 0; border-bottom: 1px solid var(--line); }
.learn-row b { min-width: 60px; font-size: 1.05rem; }
.learn-row a { font-size: .88rem; font-weight: 600; }
.diatonic { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 4px; }
.diatonic a { display: flex; flex-direction: column; align-items: center; padding: 8px 2px; border-radius: 10px; background: var(--surface-2); color: var(--text); font-weight: 800; font-size: .9rem; }
.diatonic small { color: var(--muted); font-size: .7rem; }
.prose ol { padding-left: 20px; }
.prose li { margin-bottom: 6px; }

/* Share / sheet / toast / ads (drum ui.js 공용) */
.share-bar { display: flex; gap: 8px; margin: 4px 0 10px; }
.share-btn { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--text); font-weight: 700; font-size: .9rem; cursor: pointer; }
.share-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.share-btn.kakao { background: #fee500; border-color: #fee500; color: #191919; }
.share-btn.kakao svg { fill: #191919; stroke: none; }
.sheet-wrap { position: fixed; inset: 0; z-index: 60; background: rgba(0,0,0,.45); display: flex; align-items: flex-end; justify-content: center; }
.sheet { position: relative; width: 100%; max-width: 560px; max-height: 86vh; overflow: auto; overscroll-behavior: contain; background: var(--surface); border-radius: 18px 18px 0 0; padding: 18px 16px calc(20px + env(safe-area-inset-bottom)); }
@media (min-width: 600px) { .sheet-wrap { align-items: center; } .sheet { border-radius: 18px; } }
.sheet-x { position: absolute; top: 8px; right: 8px; width: 40px; height: 40px; border: 0; background: none; color: var(--muted); font-size: 1.5rem; cursor: pointer; }
.sheet-msg { font-weight: 700; margin: 8px 0 16px; }
.sheet-btns { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }
.sheet-form label { display: grid; gap: 6px; font-weight: 700; }
.sheet-form input { width: 100%; height: 44px; padding: 0 10px; border-radius: 10px; border: 1.5px solid var(--line); background: var(--surface); }
.chip-btn { min-height: 44px; padding: 0 16px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); font-weight: 700; cursor: pointer; }
.chip-btn.primary { background: var(--blue); border-color: var(--blue); color: var(--blue-ink); }
.chip-btn.danger { background: #d62839; border-color: #d62839; color: #fff; }
.load-list { list-style: none; padding: 0; margin: 0 0 12px; }
.load-list li { display: flex; gap: 6px; border-bottom: 1px solid var(--line); }
.load-item { flex: 1; display: flex; flex-direction: column; align-items: flex-start; padding: 10px 2px; border: 0; background: none; font-weight: 700; cursor: pointer; text-align: left; }
.load-item small { color: var(--muted); font-weight: 500; }
.load-del { border: 0; background: none; color: #d62839; font-weight: 700; cursor: pointer; padding: 0 8px; }
.toast { position: fixed; left: 50%; bottom: calc(var(--player-h) + 16px + env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 70; max-width: calc(100% - 32px); padding: 12px 18px; border-radius: 12px; background: var(--text); color: var(--bg); font-size: .9rem; font-weight: 600; box-shadow: 0 6px 20px rgba(0,0,0,.2); }
.ad-slot { margin: 20px 0; min-height: 100px; text-align: center; overflow: hidden; }
.ad-slot:has(ins[data-ad-status="unfilled"]) { display: none; }

.site-footer { border-top: 1px solid var(--line); padding: 20px 0 36px; color: var(--muted); font-size: .82rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 10px; }
.footer-links a { color: var(--text); font-weight: 600; }