/* =========================================================================
   COMPONENTS — manico, controlli, pannello info/manuale.
   ========================================================================= */

/* ---------- card / pannelli ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-2);
}
.card-pad { padding: var(--sp-4); }

/* ---------- pill / select / bottoni controllo ---------- */
.row { display: flex; align-items: center; gap: var(--sp-2); flex-wrap: wrap; }
.row-label { font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; color: var(--faint); }

.pill {
  padding: 7px 12px; border-radius: var(--r-pill);
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--muted); font-weight: 700; font-size: 13px; transition: .14s;
}
.pill:hover { border-color: var(--border-2); color: var(--text); }
.pill.on {
  background: var(--accent); color: var(--accent-ink); border-color: transparent;
  box-shadow: var(--shadow-glow);
}

.sel {
  padding: 8px 12px; border-radius: var(--r-md);
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--text); font-weight: 600; font-size: 13px; cursor: pointer;
}

.note-pills { display: flex; gap: 5px; flex-wrap: wrap; }
.note-pills .pill { min-width: 38px; text-align: center; font-family: var(--font-mono); padding: 7px 8px; }

/* gruppi scala a tab */
.sg-tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: var(--sp-3); }
.sg-panel { display: none; gap: 6px; flex-wrap: wrap; }
.sg-panel.show { display: flex; }

/* ---------- pannello info / manuale ---------- */
.info {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--sp-2) var(--sp-4);
  margin-bottom: var(--sp-3);
}
.info .title { font-size: clamp(20px, 3vw, 28px); font-weight: 900; }
.info .root-badge {
  font-family: var(--font-mono); font-weight: 700; color: var(--accent-ink);
  background: var(--accent); padding: 2px 10px; border-radius: var(--r-pill);
  box-shadow: var(--shadow-glow);
}
.info .meta { font-size: 13px; color: var(--muted); }
.info .meta b { color: var(--text); font-family: var(--font-mono); }
.info .desc { flex-basis: 100%; color: var(--muted); font-size: 14px; max-width: 70ch; }
.info .tags { flex-basis: 100%; display: flex; gap: 6px; flex-wrap: wrap; }
.info .tag {
  font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: var(--r-pill);
  background: var(--surface-2); border: 1px solid var(--border); color: var(--muted);
}

/* ---------- position bar (box view) ---------- */
.posbar { display: flex; align-items: center; gap: var(--sp-3); justify-content: center; margin: var(--sp-2) 0; }
.posbar .pos-txt { font-family: var(--font-mono); font-weight: 700; min-width: 130px; text-align: center; }

/* ---------- legenda ---------- */
.legend { display: flex; gap: var(--sp-4); justify-content: center; margin-top: var(--sp-3); font-size: 12px; color: var(--muted); }
.legend .li { display: flex; align-items: center; gap: 7px; }
.legend .ld { width: 14px; height: 14px; border-radius: 50%; }

/* =========================================================================
   FRETBOARD
   ========================================================================= */
.fb {
  --open-col: 52px;
  overflow-x: auto;
  padding: var(--sp-3) var(--sp-3) var(--sp-4);
  border-radius: var(--r-lg);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.18)),
    var(--bg-2);
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04), var(--shadow-2);
}
.fb-left .fb-fnums, .fb-left .fb-row { direction: rtl; }

.fb-fnums, .fb-row {
  display: grid;
  grid-template-columns: var(--open-col) repeat(var(--nfrets, 15), minmax(30px, 1fr));
  min-width: calc(var(--open-col) + var(--nfrets, 15) * 30px);
}
.fb-fnums { margin-bottom: 6px; }
.fb-fnum {
  text-align: center; font-family: var(--font-mono); font-size: 11px; color: var(--faint);
  padding-bottom: 2px;
}
.fb-fnum.is-marker { color: var(--accent); font-weight: 700; }

.fb-grid {
  border-radius: var(--r-md); overflow: hidden;
  border: 1px solid var(--border);
}
.fb-row {
  position: relative;
  height: 46px;
  background: linear-gradient(90deg, rgba(120,90,60,0.06), rgba(120,90,60,0.10));
}
.fb-row + .fb-row { border-top: 1px solid var(--border); }

/* corda: linea orizzontale */
.fb-row::after {
  content: ''; position: absolute; left: var(--open-col); right: 0; top: 50%;
  height: 2px; transform: translateY(-50%);
  background: linear-gradient(90deg, var(--border-2), rgba(255,255,255,0.22));
  z-index: 0; pointer-events: none;
}

.fb-cell {
  position: relative; display: grid; place-items: center;
  border-right: 1px solid var(--border);
}
.fb-cell.fb-open-col {
  border-right: 3px solid var(--border-2);   /* capotasto */
  background: rgba(255,255,255,0.03);
}
.fb-cell.is-marker { background: rgba(34,224,214,0.045); }
.fb-cell.in-box { background: rgba(109,123,255,0.07); }

/* inlay marker (un pallino discreto, solo sulla corda centrale) */
.fb-row:nth-child(2) .fb-cell.is-marker::before,
.fb-row:nth-child(3) .fb-cell.is-dmarker::before {
  content: ''; position: absolute; width: 7px; height: 7px; border-radius: 50%;
  background: var(--faint); opacity: .5; z-index: 0;
}

/* note dot */
.dot {
  position: relative; z-index: 2;
  width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 12px; font-weight: 700;
  background: var(--note-c); color: #fff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.4), 0 0 10px var(--note-g);
  border: 1px solid rgba(255,255,255,0.18);
  transition: transform .1s ease;
}
.dot:hover { transform: scale(1.12); }
.dot.is-root {
  background: var(--root-c); color: var(--accent-ink);
  box-shadow: 0 2px 8px rgba(0,0,0,0.45), 0 0 16px var(--root-g);
}
.fb-left .dot { direction: ltr; }
.dot.pulse { animation: dotpulse .4s ease; }
@keyframes dotpulse {
  0% { transform: scale(1); } 40% { transform: scale(1.35); box-shadow: 0 0 22px var(--accent-glow); } 100% { transform: scale(1); }
}

/* =========================================================================
   CHORDS — griglia diagrammi
   ========================================================================= */
.chord-grid {
  display: grid; gap: var(--sp-4);
  grid-template-columns: repeat(8, 1fr);   /* 8 card per riga */
}
@media (max-width: 1280px) { .chord-grid { grid-template-columns: repeat(5, 1fr); } }
@media (max-width: 900px)  { .chord-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px)  { .chord-grid { grid-template-columns: repeat(2, 1fr); gap: var(--sp-3); } }
.chord-card {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: var(--sp-3) var(--sp-2);
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-md); text-align: center; transition: .15s;
}
.chord-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.chord-card .card-name { font-family: var(--font-mono); font-weight: 700; font-size: 16px; }
.chord-card .card-type { font-size: 11px; color: var(--muted); }
.chord-card .card-pos { font-size: 10px; color: var(--faint); }
.chord-card .card-svg { width: 100%; }
.chord-card .card-svg svg { width: 100%; height: auto; display: block; }
.chord-card .card-notes { font-family: var(--font-mono); font-size: 10px; color: var(--muted); }

/* classi SVG diagramma (seguono il tema) */
.cd-str { stroke: var(--faint); }
.cd-fret { stroke: var(--border-2); }
.cd-nut { stroke: var(--text); }
.cd-txt { fill: var(--muted); font-family: var(--font-mono); }
.cd-pos { fill: var(--accent); font-family: var(--font-mono); font-weight: 700; }
.cd-rdot { fill: var(--root-c); }
.cd-idot { fill: var(--note-c); }
.cd-ropen { fill: none; stroke: var(--root-c); stroke-width: 1.5; }
.cd-iopen { fill: none; stroke: var(--note-c); stroke-width: 1.5; }
.cd-lbl { fill: #fff; font-size: 7.5px; font-family: var(--font-mono); font-weight: 700; }

/* ---------- viste / sezioni ---------- */
.view-section { display: none; }
.view-section.active { display: block; }

/* =========================================================================
   STUDIO LAYOUT (mockup): sidebar + main + transport + pannelli
   ========================================================================= */
.studio-grid { display: grid; grid-template-columns: 280px 1fr; gap: var(--sp-4); align-items: start; }

/* ---- sidebar ---- */
.sidebar {
  display: flex; flex-direction: column; gap: var(--sp-4);
  padding: var(--sp-4);
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); backdrop-filter: blur(var(--glass-blur));
  position: sticky; top: calc(var(--header-h) + var(--sp-3));
}
.sb-block { display: flex; flex-direction: column; gap: var(--sp-2); }
.sb-title { font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; color: var(--faint); }
.sb-genres { display: flex; flex-wrap: wrap; gap: 5px; }

.chip {
  padding: 6px 11px; border-radius: var(--r-sm);
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--muted); font-weight: 700; font-size: 12px; transition: .14s;
}
.chip:hover { border-color: var(--border-2); color: var(--text); }
.chip.on { background: var(--accent); color: var(--accent-ink); border-color: transparent; box-shadow: var(--shadow-glow); }

.root-pad { display: grid; grid-template-columns: repeat(6, 1fr); gap: 5px; }
.root-key {
  aspect-ratio: 1; border-radius: var(--r-sm);
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--muted); font-family: var(--font-mono); font-weight: 700; font-size: 13px; transition: .12s;
}
.root-key:hover { border-color: var(--accent); color: var(--text); }
.root-key.on { background: var(--root-c); color: var(--accent-ink); border-color: transparent; box-shadow: var(--shadow-glow); }

.tuning-list { display: flex; flex-direction: column; gap: 5px; }
.tuning-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 9px 12px; border-radius: var(--r-md);
  border: 1px solid var(--border); background: var(--surface-2); transition: .14s;
}
.tuning-row:hover { border-color: var(--border-2); }
.tuning-row.on { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.tuning-row .tn-name { font-weight: 700; font-size: 13px; }
.tuning-row .tn-notes { font-family: var(--font-mono); font-size: 11px; color: var(--faint); letter-spacing: .15em; }

/* ---- main / head ---- */
.studio-main { display: flex; flex-direction: column; gap: var(--sp-3); min-width: 0; }
.studio-head { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--sp-4); flex-wrap: wrap; }
.head-eyebrow { font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; color: var(--faint); margin-bottom: 4px; }
.head-right { display: flex; align-items: flex-end; gap: var(--sp-3); flex-wrap: wrap; }
.head-opt { display: flex; flex-direction: column; gap: 4px; }
.head-opt .row-label { font-size: 10px; }

/* ---- transport ---- */
.transport {
  display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap;
  padding: var(--sp-3) var(--sp-4);
}
.tp-play {
  width: 52px; height: 52px; border-radius: 50%; flex: none;
  background: var(--accent); color: var(--accent-ink); font-size: 18px;
  box-shadow: var(--shadow-glow); transition: .15s;
}
.tp-play:hover { transform: scale(1.06); }
.tp-play.on { background: var(--danger); box-shadow: 0 0 18px rgba(239,68,68,.5); color: #fff; }
.tp-bpm { display: flex; align-items: center; gap: var(--sp-2); }
.tp-step { width: 30px; height: 30px; border-radius: var(--r-sm); border: 1px solid var(--border); background: var(--surface-2); font-size: 16px; color: var(--text); }
.tp-bpm-val { text-align: center; min-width: 56px; }
.tp-bpm-val span { font-family: var(--font-mono); font-size: 24px; font-weight: 700; display: block; line-height: 1; }
.tp-bpm-val small { font-size: 9px; color: var(--faint); letter-spacing: .1em; }
.tp-slider { flex: 1; min-width: 120px; accent-color: var(--accent); }
.tp-beats { display: flex; gap: 6px; }
.tp-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--surface-2); border: 1px solid var(--border-2); transition: .06s; }
.tp-dot.hit { background: var(--accent); box-shadow: 0 0 10px var(--accent-glow); transform: scale(1.25); }
.tp-group { display: flex; flex-direction: column; gap: 4px; }
.tp-group .row-label { font-size: 10px; }

/* ---- pannelli teoria ---- */
.panels { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--sp-3); }
.panel-title { font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; color: var(--faint); margin-bottom: var(--sp-2); }
.harm-row { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.harm-cell {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 8px 4px; border-radius: var(--r-sm);
  border: 1px solid var(--border); background: var(--surface-2); transition: .14s;
}
.harm-cell:hover { border-color: var(--accent); transform: translateY(-2px); }
.harm-roman { font-size: 10px; color: var(--faint); font-family: var(--font-mono); }
.harm-name { font-weight: 700; font-size: 14px; }
.harm-cell.q-min .harm-name, .harm-cell.q-dim .harm-name { color: var(--note-c); }
.harm-cell.q-maj .harm-name { color: var(--accent); }

.formula-deg { font-family: var(--font-mono); font-weight: 700; font-size: 18px; color: var(--accent); display: flex; flex-wrap: wrap; align-items: center; gap: 2px; }
.formula-deg i { color: var(--faint); font-style: normal; margin: 0 3px; }
.formula-notes { font-family: var(--font-mono); font-size: 13px; margin-top: 6px; }
.formula-int { font-family: var(--font-mono); font-size: 12px; margin-top: 4px; }

.share-box { display: flex; gap: 6px; align-items: center; }
.share-box code { flex: 1; font-family: var(--font-mono); font-size: 12px; color: var(--muted); background: var(--bg-2); padding: 8px 10px; border-radius: var(--r-sm); border: 1px solid var(--border); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---- responsive ---- */
@media (max-width: 980px) {
  .studio-grid { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .panels { grid-template-columns: 1fr; }
}

/* =========================================================================
   METRO PAGE
   ========================================================================= */
#metro { max-width: 760px; margin: 0 auto; }
.metro-card { display: flex; flex-direction: column; gap: var(--sp-4); align-items: center; }
.metro-hero { display: flex; align-items: center; gap: var(--sp-5); }
.metro-bpm-disp { text-align: center; min-width: 150px; }
.metro-bpm-disp span { font-family: var(--font-mono); font-size: 64px; font-weight: 700; line-height: 1; display: block; }
.metro-bpm-disp small { font-size: 11px; color: var(--faint); letter-spacing: .15em; }
.metro-term { font-style: italic; color: var(--accent); font-size: 14px; margin-top: 4px; }
.metro-hero .tp-step { width: 44px; height: 44px; font-size: 22px; }
.metro-ctrl-row { display: flex; align-items: center; gap: var(--sp-4); }
.metro-ctrl-row .tp-play { width: 64px; height: 64px; font-size: 22px; }
.metro-dots { gap: 10px; }
.metro-dots .tp-dot { width: 16px; height: 16px; }
.metro-dots .tp-dot.accent { border-color: var(--accent); }
.metro-opts { display: flex; gap: var(--sp-5); flex-wrap: wrap; justify-content: center; }
.metro-grooves { display: flex; flex-wrap: wrap; gap: 6px; }
.metro-adv { display: flex; flex-direction: column; gap: var(--sp-4); }
.adv-item { display: flex; flex-direction: column; gap: var(--sp-2); }
.adv-toggle { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 14px; cursor: pointer; }
.adv-toggle input { width: 18px; height: 18px; accent-color: var(--accent); }
.num-sm { width: 54px; padding: 6px 8px; border-radius: var(--r-sm); border: 1px solid var(--border); background: var(--surface-2); color: var(--text); font-family: var(--font-mono); text-align: center; }

/* =========================================================================
   QUIZ
   ========================================================================= */
#quiz { max-width: 900px; margin: 0 auto; }
.quiz-setup { display: flex; flex-direction: column; gap: var(--sp-3); }
.quiz-best { font-size: 13px; }
.quiz-start { font-size: 15px; padding: 10px 20px; }

.quiz-hud { display: flex; align-items: center; gap: var(--sp-4); margin-bottom: var(--sp-4); flex-wrap: wrap; }
.quiz-stat { display: flex; flex-direction: column; }
.quiz-lbl { font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; color: var(--faint); }
.quiz-val { font-family: var(--font-mono); font-size: 26px; font-weight: 700; line-height: 1; }
.quiz-val.accent { color: var(--accent); }
.quiz-hud .pill { margin-left: auto; }

.quiz-prompt { font-size: clamp(17px, 2.4vw, 22px); font-weight: 700; margin-bottom: var(--sp-3); text-align: center; }
.quiz-prompt b { color: var(--accent); }
.quiz-prompt .pill { font-size: 13px; margin-left: 8px; }
.quiz-board { margin-bottom: var(--sp-4); }
.quiz-answers { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.quiz-ans { font-family: var(--font-mono); font-size: 15px; padding: 10px 16px; min-width: 56px; }
.quiz-ans.ok { background: var(--ok); color: #042018; border-color: transparent; box-shadow: 0 0 14px rgba(16,185,129,.5); }
.quiz-ans.ko { background: var(--danger); color: #fff; border-color: transparent; }
.quiz-feedback { text-align: center; height: 28px; margin-top: var(--sp-2); font-family: var(--font-mono); font-weight: 700; }
.fb-ok { color: var(--ok); font-size: 20px; }
.fb-ko { color: var(--danger); font-size: 20px; }

.quiz-result { text-align: center; }
.quiz-rank { font-size: 64px; line-height: 1; }
.quiz-final { font-size: 20px; margin: 6px 0; }
.quiz-final b { font-family: var(--font-mono); color: var(--accent); }

/* dot del quiz (riusa .dot/.fb) */
.dot.q-target { background: var(--accent); color: var(--accent-ink); box-shadow: 0 0 16px var(--accent-glow); animation: dotpulse 1s ease infinite; }
.dot.q-dim { width: 22px; height: 22px; background: var(--surface-2); border-color: var(--border-2); box-shadow: none; }
.dot.q-dot { background: var(--note-c); box-shadow: 0 0 8px var(--note-g); }

/* =========================================================================
   GRIDS (manici vuoti)
   ========================================================================= */
#grids { max-width: 1100px; margin: 0 auto; }
.grids-toolbar { margin-bottom: var(--sp-4); }
.gneck { margin-bottom: var(--sp-5); }
.gneck-title {
  width: 100%; background: transparent; border: none; border-bottom: 1px dashed var(--border-2);
  color: var(--text); font-weight: 700; font-size: 15px; padding: 4px 2px; margin-bottom: 8px; outline: none;
}
.gneck-str { font-family: var(--font-mono); font-weight: 700; color: var(--muted); font-size: 13px; }
.gneck-fb .fb-row { height: 40px; }

/* ---------- banner aggiornamento PWA ---------- */
.sw-banner {
  position: fixed; left: 50%; bottom: calc(var(--tabbar-h) + 14px); transform: translateX(-50%);
  z-index: 100; display: flex; align-items: center; gap: var(--sp-3);
  padding: 10px 14px; border-radius: var(--r-pill);
  background: var(--surface-2); border: 1px solid var(--border-2);
  box-shadow: var(--shadow-2); backdrop-filter: blur(var(--glass-blur));
  font-size: 14px; font-weight: 600;
}

/* ---------- utilità modalità ---------- */
[data-mode="simple"] .adv-only { display: none !important; }