/* CPN MUSIC · Estudio nocturno neón */
:root{
  --bg:#0B0D17; --bg-deep:#070810; --panel:#141829; --panel-2:#1A1F35; --panel-3:#20264A;
  --line:#262C47; --line-2:#323a60; --text:#E8EAF6; --muted:#8A90B4; --dim:#5d6390;
  --violet:#7C5CFF; --violet-soft:rgba(124,92,255,.18); --cyan:#22D3EE; --cyan-soft:rgba(34,211,238,.16);
  --pink:#F472B6; --lime:#A3E635; --amber:#FBBF24; --danger:#FB7185;
  --radius:16px; --radius-s:10px;
  --f-head:'Sora',system-ui,sans-serif; --f-body:'DM Sans',system-ui,sans-serif; --f-mono:'JetBrains Mono',ui-monospace,monospace;
  --dock-h:250px;
  color-scheme:dark;
}
/* La plataforma es oscura por diseño ("Estudio nocturno"); mismos tokens en ambos modos. */
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){ --bg:#0B0D17; --text:#E8EAF6; } }
:root[data-theme="dark"]{ --bg:#0B0D17; --text:#E8EAF6; }
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;height:100%}
body{background:var(--bg);color:var(--text);font-family:var(--f-body);font-size:15px;line-height:1.5;overflow-x:hidden;
  background-image:radial-gradient(1200px 600px at 85% -10%,rgba(124,92,255,.16),transparent 60%),radial-gradient(900px 500px at -10% 30%,rgba(34,211,238,.08),transparent 60%);background-attachment:fixed}
button,select,input{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- Top bar ---------- */
.top{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:16px;padding:12px 20px;background:rgba(11,13,23,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand svg{width:34px;height:34px}
.brand b{font-family:var(--f-head);font-weight:800;letter-spacing:.06em;font-size:17px}
.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.14em;text-transform:uppercase;margin-top:-3px}
.nav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;flex:1;min-width:0}
.nav::-webkit-scrollbar{display:none}
.nav button{background:none;border:1px solid transparent;border-radius:999px;padding:8px 14px;color:var(--muted);font-weight:500;white-space:nowrap;display:flex;align-items:center;gap:7px}
.nav button svg{width:16px;height:16px}
.nav button:hover{color:var(--text);background:var(--panel)}
.nav button[aria-selected="true"]{color:var(--text);background:var(--panel-2);border-color:var(--line-2);box-shadow:inset 0 0 0 1px rgba(124,92,255,.25)}
.top-right{display:flex;gap:8px;align-items:center;flex-shrink:0}
.pill{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line-2);background:var(--panel);border-radius:999px;padding:7px 12px;font-size:13px;color:var(--muted)}
.pill:hover{color:var(--text)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--dim);flex-shrink:0}
.dot.ok{background:var(--lime);box-shadow:0 0 10px var(--lime)}
.dot.warn{background:var(--amber)}

/* ---------- Layout ---------- */
main{padding:24px 20px calc(var(--dock-h) + 40px);max-width:1320px;margin:0 auto}
body.dock-min main{padding-bottom:120px}
.view{display:none;animation:fade .35s ease}
.view.on{display:block}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
h1,h2,h3{font-family:var(--f-head);margin:0;letter-spacing:-.01em}
h1{font-size:clamp(26px,3.4vw,38px);font-weight:700;line-height:1.15}
h2{font-size:20px;font-weight:600}
h3{font-size:15px;font-weight:600}
.eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);font-weight:700;margin-bottom:6px}
.lead{color:var(--muted);max-width:640px;margin:8px 0 0}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-studio{grid-template-columns:minmax(0,320px) minmax(0,1fr)}
.g-chords{grid-template-columns:minmax(0,1fr) minmax(0,420px)}
@media (max-width:980px){.g2,.g3,.g-studio,.g-chords{grid-template-columns:minmax(0,1fr)}}
.card{background:linear-gradient(180deg,var(--panel),rgba(20,24,41,.85));border:1px solid var(--line);border-radius:var(--radius);padding:18px;min-width:0}
.card.glow{box-shadow:0 0 0 1px rgba(124,92,255,.15),0 20px 60px -30px rgba(124,92,255,.45)}
.card-h{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.muted{color:var(--muted)}
.small{font-size:13px}
.mono{font-family:var(--f-mono)}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.sp{flex:1}
.mt{margin-top:14px}
.hero{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:20px;flex-wrap:wrap}

/* ---------- Buttons & chips ---------- */
.btn{border:1px solid var(--line-2);background:var(--panel-2);border-radius:12px;padding:9px 14px;font-weight:600;display:inline-flex;align-items:center;gap:8px;min-height:40px}
.btn:hover{border-color:var(--violet)}
.btn svg{width:16px;height:16px}
.btn.primary{background:linear-gradient(135deg,var(--violet),#5b3df5);border-color:transparent;box-shadow:0 8px 26px -10px var(--violet)}
.btn.primary:hover{filter:brightness(1.1)}
.btn.cyan{background:linear-gradient(135deg,#0ea5c6,var(--cyan));color:#04121a;border-color:transparent}
.btn.ghost{background:transparent}
.btn.on{border-color:var(--cyan);box-shadow:inset 0 0 0 1px var(--cyan);color:var(--cyan)}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.chip{border:1px solid var(--line-2);background:var(--panel);border-radius:10px;padding:7px 11px;font-weight:600;font-size:14px;min-height:38px;transition:.15s}
.chip:hover{border-color:var(--violet);color:#fff}
.chip.sel{background:var(--violet-soft);border-color:var(--violet);color:#fff}
.chip small{display:block;font-size:11px;font-weight:500;color:var(--muted);font-family:var(--f-mono)}
.seg{display:inline-flex;background:var(--bg-deep);border:1px solid var(--line);border-radius:12px;padding:3px;gap:2px;flex-wrap:wrap}
.seg button{border:0;background:none;padding:7px 12px;border-radius:9px;color:var(--muted);font-weight:600;font-size:13px}
.seg button.sel{background:var(--panel-3);color:#fff;box-shadow:inset 0 0 0 1px var(--line-2)}
select.sel-in,input.num{background:var(--bg-deep);border:1px solid var(--line-2);border-radius:10px;padding:8px 10px;min-height:38px}
.tag{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:3px 8px;border-radius:6px;background:var(--panel-3);color:var(--muted)}
.tag.lime{color:#1a2405;background:var(--lime)}
.tag.pink{color:#2a0717;background:var(--pink)}
.tag.cyan{color:#04121a;background:var(--cyan)}
.tag.soon{background:transparent;border:1px dashed var(--line-2)}

/* ---------- Home ---------- */
.plan{display:grid;gap:10px}
.block{display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px;border-radius:12px;background:var(--bg-deep);border:1px solid var(--line)}
.block .ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-family:var(--f-mono);font-weight:700}
.block.active{border-color:var(--cyan);box-shadow:0 0 0 1px var(--cyan) inset}
.bar{height:6px;border-radius:9px;background:var(--line);overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--violet),var(--cyan));border-radius:9px;transition:width .4s}
.timer{font-family:var(--f-mono);font-size:44px;font-weight:700;letter-spacing:.02em}
.quiz-opts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.fb{min-height:24px;font-weight:600}
.fb.ok{color:var(--lime)} .fb.bad{color:var(--danger)}

/* ---------- Studio ---------- */
.keys12{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px}
.keys12 .chip{padding:7px 0;text-align:center}
.palette{display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:8px}
.pchip{position:relative;text-align:left;border:1px solid var(--line-2);background:var(--bg-deep);border-radius:12px;padding:9px 10px;min-height:58px}
.pchip:hover{border-color:var(--violet);background:var(--panel-2)}
.pchip b{display:block;font-family:var(--f-head);font-size:15px}
.pchip span{font-family:var(--f-mono);font-size:11px;color:var(--cyan)}
.pchip .lk{position:absolute;top:6px;right:7px;width:12px;height:12px;color:var(--dim)}
.timeline{display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:10px;min-height:110px}
.slot{position:relative;border-radius:14px;padding:12px;background:linear-gradient(160deg,var(--panel-2),var(--bg-deep));border:1px solid var(--line-2);min-height:96px;display:flex;flex-direction:column;justify-content:space-between;transition:.12s}
.slot .n{font-family:var(--f-mono);font-size:11px;color:var(--dim)}
.slot b{font-family:var(--f-head);font-size:20px;line-height:1.1;word-break:break-word}
.slot span{font-family:var(--f-mono);font-size:12px;color:var(--cyan)}
.slot .x{position:absolute;top:6px;right:6px;border:0;background:none;color:var(--dim);width:28px;height:28px;border-radius:8px}
.slot .x:hover{color:var(--danger);background:rgba(251,113,133,.1)}
.slot.now{border-color:var(--violet);box-shadow:0 0 0 1px var(--violet),0 0 30px -6px var(--violet);transform:translateY(-2px)}
.slot.empty{border-style:dashed;align-items:center;justify-content:center;color:var(--dim);background:transparent}
.explain{border-left:3px solid var(--violet);padding:10px 14px;background:var(--violet-soft);border-radius:0 12px 12px 0;font-size:14px}

/* ---------- Chords lab ---------- */
.qgroup{margin-top:12px}
.qgroup h3{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.12em;margin-bottom:8px}
.big-name{font-family:var(--f-head);font-size:46px;font-weight:800;line-height:1;background:linear-gradient(90deg,#fff,var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.kv{display:grid;grid-template-columns:110px minmax(0,1fr);gap:6px 12px;font-size:14px;margin-top:14px}
.kv dt{color:var(--muted)} .kv dd{margin:0;font-weight:600}
.staff{width:100%;height:auto;margin-top:12px;background:var(--bg-deep);border-radius:12px;border:1px solid var(--line)}
.success{animation:pop .6s ease}
@keyframes pop{0%{box-shadow:0 0 0 0 rgba(163,230,53,.6)}100%{box-shadow:0 0 0 24px rgba(163,230,53,0)}}

/* ---------- Coach ---------- */
.tuner{display:grid;place-items:center;text-align:center;padding:10px 0}
.tuner .note{font-family:var(--f-head);font-size:72px;font-weight:800;line-height:1}
.tuner .note.ok{color:var(--lime);text-shadow:0 0 30px rgba(163,230,53,.5)}
.meter{position:relative;width:100%;max-width:360px;height:44px;margin-top:12px}
.meter .scale{position:absolute;inset:18px 0 auto;height:8px;border-radius:9px;background:linear-gradient(90deg,var(--danger),var(--amber) 35%,var(--lime) 50%,var(--amber) 65%,var(--danger))}
.meter .needle{position:absolute;top:8px;width:4px;height:28px;border-radius:3px;background:#fff;left:50%;transform:translateX(-50%);transition:left .08s;box-shadow:0 0 12px #fff}
.roll{width:100%;height:180px;display:block;background:var(--bg-deep);border-radius:12px;border:1px solid var(--line)}
.versions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media (max-width:700px){.versions{grid-template-columns:minmax(0,1fr)}}
.ver{border:1px solid var(--line-2);border-radius:14px;padding:14px;background:var(--bg-deep)}
.ver .chords{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}
.ver .chords span{font-family:var(--f-head);font-weight:600;background:var(--panel-2);border:1px solid var(--line-2);border-radius:8px;padding:4px 8px;font-size:14px}
.ver .chords span.now{border-color:var(--violet);box-shadow:0 0 16px -4px var(--violet)}
.ver details{font-size:13px;color:var(--muted)}
.ver details li{margin:4px 0}
.ver summary{cursor:pointer;color:var(--text);font-weight:600}
.count{font-family:var(--f-mono);font-size:28px;color:var(--pink);font-weight:700;min-width:30px}

/* ---------- Map ---------- */
.mapwrap{position:relative}
#mapSvg{width:100%;height:auto;display:block}
.skill{display:grid;grid-template-columns:120px minmax(0,1fr) 64px;gap:10px;align-items:center;font-size:14px;margin:8px 0}
.roadmap li{margin:6px 0}

/* ---------- Dock (transport + keyboard) ---------- */
.dock{position:fixed;left:0;right:0;bottom:0;z-index:40;background:rgba(7,8,16,.94);backdrop-filter:blur(16px);border-top:1px solid var(--line-2);padding:10px 16px calc(10px + env(safe-area-inset-bottom))}
.dock-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;max-width:1320px;margin:0 auto 10px}
.transport{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:5px 8px}
.transport .bpm{font-family:var(--f-mono);font-weight:700;font-size:18px;width:46px;text-align:center;background:none;border:0}
.ibtn{width:34px;height:34px;border-radius:10px;border:1px solid var(--line-2);background:var(--panel-2);display:grid;place-items:center;padding:0}
.ibtn svg{width:16px;height:16px}
.ibtn.on{background:var(--violet);border-color:var(--violet)}
.beats{display:flex;gap:5px;padding:0 4px}
.beats i{width:9px;height:9px;border-radius:50%;background:var(--line-2);transition:background .05s}
.beats i.hit{background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.beats i.hit.acc{background:var(--pink);box-shadow:0 0 10px var(--pink)}
.readout{display:flex;align-items:baseline;gap:12px;min-width:0;flex:1}
.readout b{font-family:var(--f-head);font-size:26px;font-weight:800;color:var(--cyan);text-shadow:0 0 24px rgba(34,211,238,.45);white-space:nowrap}
.readout span{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.piano-wrap{max-width:1320px;margin:0 auto;overflow-x:auto;overflow-y:hidden;border-radius:12px;scrollbar-width:thin}
.piano{position:relative;height:150px;min-width:840px;user-select:none;-webkit-user-select:none;touch-action:none}
.wk,.bk{position:absolute;top:0;border-radius:0 0 8px 8px;transition:background .06s,box-shadow .06s}
.wk{height:100%;background:linear-gradient(180deg,#d9dcef,#f4f5fb 70%,#e2e4f2);border:1px solid #0b0d17;box-shadow:inset 0 -6px 0 rgba(0,0,0,.08)}
.bk{height:62%;background:linear-gradient(180deg,#151827,#262b44);border:1px solid #05060c;z-index:2;box-shadow:inset 0 -4px 0 rgba(255,255,255,.06)}
.wk .lbl{position:absolute;bottom:6px;left:0;right:0;text-align:center;font-size:10px;font-weight:700;color:#5d6390;pointer-events:none}
.wk.c .lbl{color:#7C5CFF}
.wk.auto{background:linear-gradient(180deg,#b9a8ff,#8f75ff);box-shadow:0 0 22px rgba(124,92,255,.8)}
.bk.auto{background:linear-gradient(180deg,#9b85ff,#6d4dff);box-shadow:0 0 18px rgba(124,92,255,.9)}
.wk.on{background:linear-gradient(180deg,#a5f3fc,#22D3EE);box-shadow:0 0 26px rgba(34,211,238,.9)}
.bk.on{background:linear-gradient(180deg,#67e8f9,#0ea5c6);box-shadow:0 0 20px rgba(34,211,238,1)}
.wk.target{box-shadow:inset 0 0 0 3px var(--pink)}
.bk.target{box-shadow:inset 0 0 0 3px var(--pink)}
.wk.target .lbl{color:var(--pink)}
body.dock-min .piano-wrap{display:none}
body.dock-min .dock-top{margin-bottom:0}
@media (max-width:700px){
  .top{padding:10px 12px;gap:8px 10px;flex-wrap:wrap} .brand small{display:none} .top-right{margin-left:auto} .top-right .pill span.t{display:none} .nav{order:3;flex-basis:100%}
  main{padding:18px 16px calc(var(--dock-h) + 30px)}
  .piano{height:120px}
  .readout b{font-size:20px}
  .big-name{font-size:36px}
  .tuner .note{font-size:56px}
  .skill{grid-template-columns:90px minmax(0,1fr) 54px}
}

/* ---------- Fase 1: login, aula, instrumentos, admin ---------- */
body.booting main,body.booting .dock,body.booting .top{visibility:hidden}
.login{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:16px;background:radial-gradient(900px 500px at 70% 10%,rgba(124,92,255,.25),transparent 60%),var(--bg)}
.login-card{width:100%;max-width:400px}
.modal{position:fixed;inset:0;z-index:90;background:rgba(4,5,10,.72);display:grid;place-items:center;padding:16px;backdrop-filter:blur(6px)}
.modal-card{width:100%;max-width:860px;max-height:calc(100vh - 32px);overflow:auto}
.course h2{margin-bottom:4px}
.lessons{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px;margin-top:14px}
.lcard{text-align:left;border:1px solid var(--line-2);background:var(--bg-deep);border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:6px;min-height:120px}
.lcard:hover{border-color:var(--violet)}
.lcard b{font-family:var(--f-head);font-size:15px;line-height:1.3}
.lcard .row{gap:6px}
.st-new{color:var(--muted)} .st-started{color:var(--amber)} .st-completed{color:var(--cyan)} .st-mastered{color:var(--lime)}
.cycle{display:flex;gap:6px;flex-wrap:wrap;margin:14px 0 4px}
.cycle a{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);text-decoration:none;border:1px solid var(--line-2);border-radius:999px;padding:5px 11px}
.cycle a:hover{color:#fff;border-color:var(--violet)}
.lsec{margin-top:16px;scroll-margin-top:90px}
.lsec>h2{display:flex;align-items:center;gap:10px}
.lsec>h2 i{font-style:normal;font-family:var(--f-mono);font-size:12px;color:var(--cyan);border:1px solid var(--cyan);border-radius:8px;padding:2px 7px}
.prose p{margin:10px 0;max-width:760px}
.prose b{color:#fff}
.exgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin-top:10px}
.ex{border:1px solid var(--line-2);background:var(--bg-deep);border-radius:12px;padding:12px;display:flex;flex-direction:column;gap:8px}
.ex b{font-family:var(--f-head)}
.task{display:grid;grid-template-columns:34px minmax(0,1fr);gap:12px;padding:14px;border:1px solid var(--line-2);border-radius:14px;background:var(--bg-deep);margin-top:10px}
.task .ck{width:34px;height:34px;border-radius:10px;border:2px solid var(--line-2);display:grid;place-items:center;font-weight:800;color:var(--dim)}
.task.done .ck{border-color:var(--lime);color:#0b0d17;background:var(--lime)}
.task.active{border-color:var(--pink);box-shadow:0 0 0 1px var(--pink) inset}
.stars{display:flex;gap:4px}
.stars button{background:none;border:1px solid var(--line-2);border-radius:10px;width:40px;height:40px;font-size:18px;color:var(--dim)}
.stars button.on{color:var(--amber);border-color:var(--amber)}
.banner{border:1px solid var(--amber);background:rgba(251,191,36,.08);border-radius:12px;padding:10px 14px;font-size:14px}
.icard{text-align:left;border:1px solid var(--line-2);background:var(--panel);border-radius:14px;padding:14px;min-height:110px}
.icard.sel{border-color:var(--violet);box-shadow:0 0 0 1px var(--violet) inset}
.icard b{font-family:var(--f-head);display:block;margin:6px 0 2px}
.fret{width:100%;height:auto;display:block;background:var(--bg-deep);border-radius:12px;border:1px solid var(--line)}
table.t{width:100%;border-collapse:collapse;font-size:14px}
table.t th,table.t td{text-align:left;padding:9px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
table.t th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.08em}
.tablewrap{overflow-x:auto}
textarea.code{width:100%;min-height:340px;background:var(--bg-deep);border:1px solid var(--line-2);border-radius:12px;color:var(--text);font-family:var(--f-mono);font-size:12.5px;padding:12px;line-height:1.5}
.field{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}
.field input,.field select{width:100%}
.dayck{display:inline-flex;align-items:center;gap:4px;border:1px solid var(--line-2);border-radius:8px;padding:5px 8px;font-size:13px}