:root {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --ink: #1d1b2e;
  --muted: #6b6879;
  --line: #e4e1da;
  --accent: #5b4bdb;
  --accent-ink: #ffffff;
  --play: #e2552f;
  --warn-bg: #fff6e0;
  --warn-line: #f0d38a;
  --radius: 14px;
  --tap: 44px;
  --player-h: 150px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15141c; --surface: #1f1e29; --ink: #ecebf3; --muted: #a09db0; --line: #34323f;
    --accent: #8f82ff; --accent-ink: #15141c; --warn-bg: #2e2716; --warn-line: #6b5a26;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding-bottom: calc(var(--player-h) + env(safe-area-inset-bottom));
}
h1, h2 { margin: 0; line-height: 1.2; }
h2 { font-size: 1.15rem; }
.muted { color: var(--muted); }
.hint { font-size: .85rem; color: var(--muted); margin: .4rem 0 0; }
button, select, .btn {
  font: inherit; color: inherit; min-height: var(--tap); border-radius: 10px;
  border: 1px solid var(--line); background: var(--surface); padding: 0 14px; cursor: pointer;
}
button:focus-visible, select:focus-visible, .btn:focus-within { outline: 3px solid var(--accent); outline-offset: 2px; }
.btn { display: inline-flex; align-items: center; justify-content: center; }
.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
.ghost { background: transparent; }

.topbar {
  position: sticky; top: 0; z-index: 5; display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; padding-top: max(10px, env(safe-area-inset-top));
  background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { font-size: 1.1rem; letter-spacing: .02em; }

main { max-width: 1200px; margin: 0 auto; padding: 12px 16px; display: grid; gap: 12px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }

.upload { text-align: center; padding: 28px 16px; }
.upload-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin: 16px 0; }
.upload-actions .btn { flex: 1 1 160px; max-width: 240px; }
.drop { border: 2px dashed var(--line); border-radius: var(--radius); padding: 22px; color: var(--muted); }
.drop.over { border-color: var(--accent); color: var(--accent); }
@media (hover: none) { .drop { display: none; } }

#processing { display: flex; align-items: center; gap: 14px; }
.spinner { width: 28px; height: 28px; border-radius: 50%; border: 3px solid var(--line); border-top-color: var(--accent); animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

#result { display: grid; gap: 12px; }
.info { display: flex; gap: 12px; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; }
.info p { margin: .25rem 0 0; }
.exports summary { min-height: var(--tap); display: flex; align-items: center; padding: 0 14px; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; list-style: none; }
.exports[open] { display: grid; gap: 6px; }
.exports a { color: var(--accent); padding: 8px 4px; }

.controls { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 720px) { .controls { grid-template-columns: 2fr 1fr 1.4fr; align-items: start; } }
.field label, .field .label { display: block; font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin-bottom: 6px; }
.row { display: flex; gap: 8px; flex-wrap: wrap; }
.row select { flex: 1 1 120px; }
.stepper { display: inline-flex; align-items: center; gap: 6px; }
.stepper button { width: var(--tap); padding: 0; font-size: 1.2rem; }
.stepper output { min-width: 2.5ch; text-align: center; font-variant-numeric: tabular-nums; }
.chip { display: inline-flex !important; align-items: center; gap: 8px; min-height: var(--tap); padding: 0 12px; border: 1px solid var(--line); border-radius: 999px; text-transform: none !important; letter-spacing: 0 !important; font-size: .95rem !important; color: var(--ink) !important; margin: 0 !important; }
.chip input { width: 18px; height: 18px; accent-color: var(--accent); }

.warn { background: var(--warn-bg); border-color: var(--warn-line); }
.warn summary { cursor: pointer; min-height: 28px; }
.warn ul { margin: .5rem 0 0; padding-left: 1.2rem; }

.score { padding: 8px; overflow-x: hidden; }
.score svg { width: 100%; height: auto; display: block; color: #000; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .score { background: #fbfaf7; } }
.score g.note.playing, .score g.note.playing * { fill: var(--play) !important; stroke: var(--play); }

.player {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10; background: var(--surface);
  border-top: 1px solid var(--line); padding: 6px 16px calc(10px + env(safe-area-inset-bottom));
  box-shadow: 0 -6px 24px rgb(0 0 0 / .08);
}
.progress input { width: 100%; margin: 0; accent-color: var(--accent); height: 28px; }
.player-row { display: flex; align-items: center; gap: 12px; max-width: 1200px; margin: 0 auto; }
.round { border-radius: 50%; width: var(--tap); padding: 0; flex: none; }
.round.big { width: 56px; height: 56px; font-size: 1.3rem; background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.tempo { flex: 1; min-width: 0; }
.tempo-top { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; font-size: .9rem; font-variant-numeric: tabular-nums; white-space: nowrap; }
.tempo-top label { font-weight: 600; }
@media (max-width: 480px) { .tempo-top #nps { font-size: .75rem; overflow: hidden; text-overflow: ellipsis; } }
.tempo input { width: 100%; accent-color: var(--accent); height: 28px; margin: 0; }
.presets { display: flex; gap: 6px; }
.presets button { min-height: 32px; flex: 1; padding: 0 4px; font-size: .85rem; }
.pos { text-align: center; margin: 4px 0 0; font-size: .8rem; }

/* ---------------------------------------------------------------- cabeçalho e conta */
.brand { font-weight: 700; color: var(--ink); text-decoration: none; white-space: nowrap; }
.top-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: flex-end; min-width: 0; }
.top-actions button { min-height: var(--tap); }
@media (max-width: 360px) { .top-actions { gap: 4px; } .top-actions button { padding: 0 10px; } }
.credits { border-radius: 999px; font-variant-numeric: tabular-nums; font-weight: 600; }
@media (max-width: 520px) { #btn-library { display: none; } }

/* ---------------------------------------------------------------- envio */
.hero { font-size: clamp(1.35rem, 4vw, 1.9rem); margin-bottom: .5rem; }
.examples { margin-top: 22px; border-top: 1px solid var(--line); padding-top: 14px; }
.examples .label { font-size: .85rem; color: var(--muted); margin: 0 0 8px; }
.row.center { justify-content: center; }
.row.between { justify-content: space-between; align-items: baseline; }
.msg { margin-top: 12px; padding: 10px 12px; border-radius: 10px; background: color-mix(in srgb, var(--play) 12%, var(--surface)); color: var(--ink); text-align: left; }
.msg.ok { background: color-mix(in srgb, #2e9d5b 14%, var(--surface)); }
button.link { border: none; background: none; color: var(--accent); padding: 0 4px; min-height: 32px; text-decoration: underline; }
button.link.danger { color: var(--play); }

/* listas (recentes, biblioteca, extrato) */
.list { list-style: none; padding: 0; margin: 8px 0 0; display: grid; gap: 2px; }
.list li { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 8px 4px; border-bottom: 1px solid var(--line); }
.list li a { color: var(--ink); font-weight: 600; text-decoration: none; flex: 1 1 200px; }
.list li a:hover { color: var(--accent); }
.list.small li { font-size: .85rem; padding: 4px; }
.ledger { margin-top: 14px; }
.ledger summary { cursor: pointer; color: var(--muted); }

/* processamento */
#processing p { margin: 0; }

/* resultado */
.info-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-start; }
.info-actions .exports { position: relative; }
.exports[open] { display: block; }
.exports[open] > :not(summary) { display: block; width: 100%; margin-top: 6px; }
#btn-save.on { color: #b8860b; border-color: #e5c56a; }
.badge { display: inline-block; font-size: .8rem; padding: 3px 10px; border-radius: 999px; }
.badge.ok { background: color-mix(in srgb, #2e9d5b 15%, var(--surface)); color: #1f7a45; }
.badge.warnb { background: var(--warn-bg); border: 1px solid var(--warn-line); }

/* login */
dialog { border: 1px solid var(--line); border-radius: var(--radius); padding: 0; background: var(--surface); color: var(--ink); width: min(420px, calc(100vw - 32px)); }
dialog::backdrop { background: rgb(0 0 0 / .45); }
.login { display: grid; gap: 12px; padding: 20px; }
.login label { display: grid; gap: 4px; font-size: .9rem; font-weight: 600; }
.login input { font: inherit; min-height: var(--tap); border: 1px solid var(--line); border-radius: 10px; padding: 0 12px; background: var(--bg); color: var(--ink); }
.login .row button { flex: 1; }

/* acervo */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.ac-search { display: grid; gap: 8px; margin-top: 10px; }
.ac-search input[type="search"] { font: inherit; color: var(--ink); width: 100%; min-width: 0; min-height: var(--tap); border: 1px solid var(--line); border-radius: 10px; padding: 0 12px; background: var(--bg); font-size: 1rem; }
.ac-search input[type="search"]:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.ac-filters { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 8px; }
.ac-filters select { min-width: 0; width: 100%; padding: 0 8px; }
.ac-list li { padding: 0; }
.ac-list li a { display: flex; align-items: center; gap: 12px; min-height: 56px; padding: 6px 4px; flex: 1 1 100%; min-width: 0; }
.ac-num { flex: none; min-width: 3.2ch; text-align: right; font-variant-numeric: tabular-nums; font-weight: 700; color: var(--accent); }
.ac-body { display: grid; min-width: 0; }
.ac-title { overflow-wrap: anywhere; }
.ac-meta { font-size: .85rem; font-weight: 400; color: var(--muted); overflow-wrap: anywhere; }
.ac-empty { margin: 14px 0 4px; }

/* aviso flutuante */
.toast { position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(var(--player-h) + 20px); z-index: 20;
  background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 999px; font-size: .9rem; max-width: calc(100vw - 32px); box-shadow: 0 6px 24px rgb(0 0 0 / .2); }
body:not([data-screen="result"]) .toast { bottom: 24px; }

/* verificação em 2 etapas */
.security { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); }
.security h3 { font-size: 1rem; margin: 0 0 4px; }
.security img { display: block; margin: 10px 0; background: #fff; padding: 6px; border-radius: 8px; }
.security input, .mfa-step input { font: inherit; min-height: var(--tap); border: 1px solid var(--line); border-radius: 10px; padding: 0 12px; background: var(--bg); color: var(--ink); width: 9ch; letter-spacing: .2em; }
.mfa-step { display: grid; gap: 10px; }
code { word-break: break-all; }

/* clássicos de domínio público */
.classico-busca { width: 100%; min-height: var(--tap); margin-top: 8px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px; font: inherit; background: var(--card, transparent); color: inherit; }
.classico-list { max-height: 420px; overflow-y: auto; }
.classico-list li { padding: 0; flex-wrap: nowrap; }
.classico-list li button { flex: 1 1 auto; min-width: 0; min-height: 52px; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; gap: 1px; text-align: left; background: none; border: 0; padding: 6px 4px; cursor: pointer; color: var(--ink); font: inherit; }
.classico-list li button:hover .classico-t { color: var(--accent); }
.classico-t { font-weight: 600; }
.classico-c { font-size: .85rem; color: var(--muted); }
.classico-list li a.classico-src { flex: 0 0 auto; padding: 8px; color: var(--muted); font-weight: 400; text-decoration: none; }