:root {
  --bg: #121316;
  --panel: #1b1d22;
  --panel-2: #24272e;
  --border: #2f333b;
  --text: #ececf1;
  --muted: #9a9fab;
  --accent: #f5c542;
  --accent-text: #1a1400;
  --danger: #e5484d;
  --radius: 10px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  height: 100vh;
  overflow: hidden;
}

h1 { font-size: 22px; margin: 0; }
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.brand img { width: 56px; height: auto; }
.brand-mini { width: 34px; height: auto; margin-left: auto; }
h2 { font-size: 26px; margin: 0; }

button {
  font: inherit;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
}
button:hover { border-color: var(--muted); }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }
button.ghost { background: transparent; }
button.small { padding: 4px 10px; font-size: 13px; }
button.danger { color: var(--danger); border-color: var(--danger); }

input[type="text"], input[type="search"], input[type="number"] {
  font: inherit;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  width: 100%;
}

/* ---------- Sidebar ---------- */
.sidebar {
  width: 300px;
  flex: none;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.section-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
  margin-top: 12px;
}
.row { display: flex; align-items: center; justify-content: space-between; }
.gap { gap: 8px; }
.row.gap button { flex: 1; }

.chips { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.chips button { padding: 8px 0; text-align: center; }
.chips button.on, .list button.on { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }

.list { display: flex; flex-direction: column; gap: 4px; max-height: 320px; overflow-y: auto; }
.list button { text-align: left; padding: 6px 10px; display: flex; justify-content: space-between; align-items: center; }
.list button span.count { font-size: 12px; color: var(--muted); margin-left: auto; }
.list button.on span.count { color: var(--accent-text); }
.list button span.add {
  width: 28px; height: 28px; margin-left: 10px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); font-size: 16px; color: var(--muted);
}
.list button span.add.in { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.list button.on span.add { border-color: rgba(0,0,0,.3); color: var(--accent-text); }
.list button span.count.edit { cursor: pointer; padding: 4px 6px; }
.list .empty { color: var(--muted); font-size: 13px; padding: 6px 4px; }

.segmented { display: flex; gap: 0; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.segmented button { flex: 1; border: none; border-radius: 0; background: transparent; padding: 8px 6px; }
.segmented button + button { border-left: 1px solid var(--border); }
.segmented button.on { background: var(--accent); color: var(--accent-text); font-weight: 600; }

/* ---------- Main ---------- */
.mobile-topbar { display: none; }
.options > summary { display: none; }
.options { display: contents; }

.main {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.preview-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 24px;
  overflow: auto;
  /* xadrez para mostrar transparência */
  background-color: var(--bg);
}

.preview {
  height: min(70vh, 720px);
  aspect-ratio: 2 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0,0,0,.5);
  border: 1px solid var(--border);
}
.preview svg { width: 100%; height: 100%; display: block; }
.theme-transparent {
  background-color: #888;
  background-image:
    linear-gradient(45deg, #666 25%, transparent 25%),
    linear-gradient(-45deg, #666 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #666 75%),
    linear-gradient(-45deg, transparent 75%, #666 75%);
  background-size: 24px 24px;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
}

.positions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.positions button {
  padding: 4px;
  width: 72px;
  height: 108px;
  background: #000;
  border-radius: 8px;
}
.positions button.on { outline: 3px solid var(--accent); border-color: var(--accent); }
.positions svg { width: 100%; height: 100%; }

.controls {
  width: 340px;
  flex: none;
  background: var(--panel);
  border-left: 1px solid var(--border);
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.meta { color: var(--muted); margin: -8px 0 0; font-size: 14px; }

.field { display: flex; flex-direction: column; gap: 6px; }
.field > span { font-size: 13px; color: var(--muted); }
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; cursor: pointer; }
.hint { color: var(--muted); font-size: 12px; }

.actions { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.status { color: var(--muted); font-size: 13px; min-height: 18px; margin: 0; }

/* ---------- Seleção múltipla ---------- */
.selection-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 5;
  background: var(--panel); border-top: 1px solid var(--border);
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  display: flex; align-items: center; gap: 16px;
  box-shadow: 0 -10px 30px rgba(0,0,0,.4);
}
.sel-thumbs { display: flex; gap: 8px; overflow-x: auto; flex: 1; padding: 4px 0; }
.sel-thumb {
  position: relative; flex: none; width: 48px; height: 72px;
  background: #000; border-radius: 6px; overflow: hidden; border: 1px solid var(--border); cursor: pointer;
}
.sel-thumb svg { width: 100%; height: 100%; display: block; }
.sel-thumb .x {
  position: absolute; top: 2px; right: 2px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--danger); color: #fff; font-size: 11px; display: flex; align-items: center; justify-content: center;
}
.sel-actions { display: flex; align-items: center; gap: 10px; flex: none; }
.sel-count { color: var(--muted); font-size: 14px; white-space: nowrap; }
body.has-selection .sidebar, body.has-selection .controls, body.has-selection .preview-area { padding-bottom: 110px; }

/* ---------- Editor ---------- */
.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 10;
}
.modal[hidden] { display: none; }
.modal-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  width: min(880px, 95vw);
  max-height: 95vh;
  overflow: auto;
}
.editor-body { display: flex; gap: 24px; margin-top: 16px; flex-wrap: wrap; }
.editor-grid-wrap { flex: 1; min-width: 300px; }
.editor-side { width: 280px; display: flex; flex-direction: column; gap: 12px; }
.editor-preview { width: 200px; aspect-ratio: 2/3; border-radius: 8px; overflow: hidden; border: 1px solid var(--border); }
.editor-preview svg { width: 100%; height: 100%; display: block; }

.editor-grid {
  display: grid;
  grid-template-columns: 36px repeat(6, 48px);
  gap: 4px;
  justify-content: center;
}
.editor-grid .cell {
  width: 48px; height: 48px;
  border-radius: 6px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 20px;
  user-select: none;
}
.editor-grid .cell.marker { background: transparent; border-style: dashed; font-size: 22px; }
.editor-grid .cell.on { background: var(--accent); color: var(--accent-text); font-weight: 700; }
.editor-grid .cell.fretnum, #editor-finger-row .cell.fretnum { width: 36px; background: transparent; border: none; color: var(--muted); font-size: 12px; }
.editor-fingers { display: flex; flex-direction: column; align-items: center; gap: 6px; margin-top: 12px; }
.editor-fingers > span { font-size: 12px; color: var(--muted); }
#editor-finger-row { display: grid; grid-template-columns: 36px repeat(6, 48px); gap: 4px; }
#editor-finger-row select {
  font: inherit; color: var(--text); background: var(--panel-2);
  border: 1px solid var(--border); border-radius: 6px; padding: 4px; text-align: center;
}

/* ---------- Telemóvel: duas vistas (lista / acorde) ---------- */
@media (max-width: 768px) {
  body { display: block; height: auto; overflow: auto; }
  .sidebar { width: 100%; border-right: none; padding: 12px 16px; }
  .list { max-height: none; }
  .chips { grid-template-columns: repeat(6, 1fr); }
  body[data-view="chord"] .sidebar { display: none; }
  body[data-view="list"] .main { display: none; }

  .main { display: flex; flex-direction: column; }
  .mobile-topbar {
    display: flex; align-items: center; gap: 8px;
    position: sticky; top: 0; z-index: 4;
    background: var(--panel); border-bottom: 1px solid var(--border);
    padding: calc(8px + env(safe-area-inset-top)) 12px 8px;
  }
  .mobile-topbar button { border: none; font-size: 17px; padding: 6px 8px; }
  #mobile-title { font-weight: 600; font-size: 17px; }
  .preview-area { padding: 16px; }
  .preview { height: auto; width: min(100%, 52vh * 2 / 3); box-shadow: none; }
  .positions button { width: 56px; height: 84px; }
  .controls { width: 100%; border-left: none; padding: 16px; }
  .controls h2 { font-size: 22px; }
  .actions button { padding: 12px 14px; font-size: 16px; }

  .options { display: block; border: 1px solid var(--border); border-radius: var(--radius); padding: 0 14px; }
  .options > summary { display: block; cursor: pointer; padding: 12px 0; font-weight: 600; color: var(--text); }
  .options > * + * { margin-bottom: 14px; }
  .options[open] > summary { border-bottom: 1px solid var(--border); margin-bottom: 14px; }

  .selection-bar { flex-wrap: wrap; gap: 8px; }
  .sel-thumbs { width: 100%; }
  .sel-actions { width: 100%; justify-content: space-between; }
  .sel-actions .primary { flex: 1; padding: 12px; font-size: 16px; }
  body.has-selection .sidebar, body.has-selection .controls { padding-bottom: 170px; }
  body.has-selection .preview-area { padding-bottom: 16px; }

  .modal { align-items: flex-end; }
  .modal-box { width: 100%; max-height: 92vh; border-radius: 14px 14px 0 0; }
  .editor-side { width: 100%; }
  .editor-preview { display: none; }
}