/* TUMBAO — brutalist minimalista */
:root {
  --bg: #141414;
  --bg-2: #181818;
  --bg-3: #1e1e1e;
  --fg: #f2ede4;
  --muted: #8a857c;
  --line: #2b2b2b;
  --accent: #FF8C00;
  --accent-soft: rgba(255, 140, 0, 0.12);
  --danger: #e05252;
  --ok: #7ec850;
  --mono: "JetBrains Mono", "Geist Mono", "IBM Plex Mono", ui-monospace, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.55;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- header / footer ---------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  border-bottom: 1px solid var(--line);
}
.logo {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--fg);
}
.logo:hover { text-decoration: none; }
.logo-dot { color: var(--accent); }
.site-nav { display: flex; gap: 22px; }
.site-nav a { color: var(--muted); font-size: 13px; letter-spacing: 1px; text-transform: uppercase; }
.site-nav a:hover, .site-nav a.active { color: var(--accent); text-decoration: none; }

.site-footer {
  padding: 16px 28px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 1px;
  margin-top: auto;
}

main { flex: 1; width: 100%; max-width: 1080px; margin: 0 auto; padding: 32px 28px 60px; }

/* ---------- tipografía ---------- */
h1 { font-size: 34px; letter-spacing: 2px; font-weight: 700; }
h2 { font-size: 22px; letter-spacing: 1px; font-weight: 700; }
h3 { font-size: 16px; letter-spacing: 1px; font-weight: 700; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

/* ---------- botones / inputs ---------- */
.btn {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 10px 18px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 120ms, color 120ms;
}
.btn:hover { background: var(--accent); color: var(--bg); }
.btn:disabled { opacity: 0.35; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: var(--bg); }
.btn-primary:hover { background: transparent; color: var(--accent); }
.btn-ghost { color: var(--muted); border-color: var(--line); }
.btn-ghost:hover { color: var(--fg); border-color: var(--muted); background: transparent; }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: var(--bg); }
.btn-lg { padding: 16px 28px; font-size: 15px; }

.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--muted);
  margin-bottom: 6px;
}
.field input, .field select {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 15px;
  padding: 8px 2px;
  outline: none;
  border-radius: 0;
}
.field input:focus, .field select:focus { border-bottom-color: var(--accent); }
.field select option { background: var(--bg-3); color: var(--fg); }
.field input[type="range"] {
  accent-color: var(--accent);
  border-bottom: none;
  padding: 0;
}

/* ---------- tarjetas / grids ---------- */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }

.card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  padding: 18px;
  cursor: pointer;
  transition: border-color 120ms;
}
.card:hover { border-color: var(--accent); }
.card .num {
  font-size: 30px;
  color: var(--accent);
  font-weight: 700;
  line-height: 1;
}
.card .card-title { font-size: 15px; font-weight: 700; margin-top: 8px; letter-spacing: 0.5px; }
.card .card-sub { color: var(--muted); font-size: 12px; margin-top: 4px; }

.chip {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid var(--line);
  color: var(--muted);
}
.chip-basico { color: var(--ok); border-color: rgba(126, 200, 80, 0.4); }
.chip-intermedio { color: var(--accent); border-color: rgba(255, 140, 0, 0.4); }
.chip-avanzado { color: var(--danger); border-color: rgba(224, 82, 82, 0.4); }
.chip-approx { border-style: dashed; color: var(--muted); cursor: help; }

/* ---------- vistas ---------- */
.view { animation: fade 160ms ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.page-head { margin-bottom: 28px; }
.page-head .kicker { color: var(--accent); font-size: 11px; letter-spacing: 3px; text-transform: uppercase; }
.page-head h1 { margin-top: 6px; }
.page-head p { color: var(--muted); margin-top: 8px; max-width: 640px; }

.tabs { display: flex; gap: 10px; margin-bottom: 24px; flex-wrap: wrap; }
.tab {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 7px 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
}
.tab.active { color: var(--accent); border-color: var(--accent); }

/* ---------- ficha de paso ---------- */
.step-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
@media (max-width: 760px) { .step-detail { grid-template-columns: 1fr; } }
.step-detail .meta { display: flex; gap: 8px; align-items: center; margin: 10px 0 18px; }
.step-detail p { color: var(--muted); }
.step-detail p strong { color: var(--fg); }

/* ---------- diagrama ---------- */
.diagram-wrap {
  background:
    radial-gradient(120% 85% at 50% 8%, #2a2a2c 0%, #1a1a1b 46%, #121212 100%);
  border: 1px solid var(--line);
  padding: 14px;
}
.diagram-wrap canvas { width: 100%; display: block; cursor: grab; touch-action: none; }
.diagram-wrap canvas:active { cursor: grabbing; }
.diagram-controls { display: flex; gap: 10px; margin-top: 12px; align-items: center; flex-wrap: wrap; }
.diagram-controls .bpm { margin-left: auto; display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 12px; }
.view-toggle { display: inline-flex; }
.view-toggle .btn { padding: 8px 11px; color: var(--muted); border-color: var(--line); }
.view-toggle .btn + .btn { border-left: 0; }
.view-toggle .btn.active { color: var(--bg); background: var(--accent); border-color: var(--accent); }
.practice-view-controls { justify-content: center; }
@media (max-width: 460px) {
  .diagram-controls .bpm { width: 100%; margin-left: 0; }
}
.diagram-key {
  display: flex; flex-wrap: wrap; gap: 9px 16px; margin-top: 14px;
  padding: 10px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  color: var(--muted); font-size: 9px; letter-spacing: .4px; text-transform: uppercase;
}
.diagram-key span { display: inline-flex; align-items: center; gap: 6px; }
.key-foot { width: 14px; height: 7px; border: 1px solid var(--accent); border-radius: 50%; display: inline-block; }
.key-foot.weighted { background: var(--accent); }
.key-foot.free { opacity: .45; }
.key-line { width: 18px; border-top: 1px dashed var(--accent); display: inline-block; }
.beat-cue { margin-top: 12px; border-left: 3px solid var(--accent); background: #101010; padding: 12px; }
.cue-head { display: grid; grid-template-columns: auto 1fr; align-items: baseline; gap: 5px 10px; margin-bottom: 10px; }
.cue-head > strong { color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: 1.5px; }
.cue-head > span { color: var(--muted); font-size: 10px; text-align: right; }
.cue-head .cue-duration { display: block; grid-column: 1 / -1; color: var(--accent); font-size: 9px; text-align: left; letter-spacing: .02em; }
.cue-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9px 14px; }
.cue-grid > div:last-child { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 8px; }
.cue-grid b { color: var(--muted); display: block; font-size: 8px; letter-spacing: 1.2px; margin-bottom: 3px; }
.cue-grid span { color: var(--fg); display: block; font-size: 11px; line-height: 1.4; }
.frame-title { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin: 18px 0 8px; }
.frame-title span { font-size: 10px; font-weight: 800; letter-spacing: 1.5px; }
.frame-title small { color: var(--muted); font-size: 9px; }
.frame-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.frame-card { position: relative; min-width: 0; border: 1px solid var(--line); background: var(--bg); padding: 0; cursor: pointer; }
.frame-card:hover, .frame-card.active { border-color: var(--accent); }
.frame-card > span { position: absolute; z-index: 1; top: 4px; left: 5px; width: 18px; height: 18px; display: grid; place-items: center; background: #101010; color: var(--muted); border: 1px solid var(--line); font: 700 9px 'JetBrains Mono', monospace; }
.frame-card.active > span { color: #101010; background: var(--accent); border-color: var(--accent); }
.frame-card canvas { width: 100%; pointer-events: none; }
.practice-body > .diagram-key, .practice-body > .beat-cue { width: min(100%, 640px); }
@media (max-width: 520px) {
  .frame-strip { grid-template-columns: repeat(2, 1fr); }
  .cue-grid { grid-template-columns: 1fr; }
  .cue-grid > div:last-child { grid-column: auto; }
}

/* ---------- rutina (combo) ---------- */
.combo-chain { display: flex; flex-direction: column; gap: 0; margin: 20px 0; }
.combo-step {
  display: flex; align-items: center; gap: 16px;
  background: var(--bg-2); border: 1px solid var(--line);
  padding: 14px 18px;
}
.combo-step .pos { font-size: 20px; color: var(--accent); font-weight: 700; min-width: 30px; }
.combo-step .name { font-weight: 700; }
.combo-step .lvl { margin-left: auto; }
.combo-arrow { color: var(--accent); text-align: center; padding: 4px 0; font-size: 13px; }

/* ---------- modo práctica ---------- */
.practice {
  position: fixed;
  inset: 0;
  background: #0b0b0b;
  z-index: 50;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.practice-top {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 28px; border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.practice-top .combo-name { font-weight: 700; letter-spacing: 1px; }
.practice-top .spacer { flex: 1; }
.practice-body {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 30px 28px;
  max-width: 900px; margin: 0 auto; width: 100%;
}
.practice-step-info { text-align: center; margin-bottom: 18px; }
.practice-step-info .step-pos { color: var(--accent); font-size: 12px; letter-spacing: 3px; text-transform: uppercase; }
.practice-step-info .step-name { font-size: 34px; font-weight: 700; letter-spacing: 1px; margin-top: 4px; }
.practice-step-info .step-desc { color: var(--muted); margin-top: 8px; max-width: 560px; }

.beat-grid { display: flex; gap: 6px; margin: 22px 0 8px; }
.beat {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); color: var(--muted);
  font-size: 12px;
  transition: all 90ms;
}
.beat.on { background: var(--accent); color: #0b0b0b; border-color: var(--accent); font-weight: 700; }

.practice-progress { display: flex; gap: 8px; margin-top: 14px; }
.practice-progress .dot { width: 10px; height: 10px; border: 1px solid var(--line); }
.practice-progress .dot.on { background: var(--accent); border-color: var(--accent); }

.practice-controls {
  display: flex; gap: 12px; margin-top: 26px;
  align-items: center; flex-wrap: wrap; justify-content: center;
}
.practice-settings {
  display: flex; gap: 26px; margin-top: 18px; flex-wrap: wrap; justify-content: center;
  color: var(--muted); font-size: 12px;
}
.practice-settings label { display: flex; align-items: center; gap: 8px; }
.practice-settings input[type="range"] { width: 120px; accent-color: var(--accent); }

/* ---------- misc ---------- */
.empty { color: var(--muted); border: 1px dashed var(--line); padding: 40px; text-align: center; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.mt { margin-top: 18px; }
.mt2 { margin-top: 32px; }
.error-box { border: 1px solid var(--danger); color: var(--danger); padding: 14px; margin-top: 16px; }
.loading { color: var(--muted); padding: 40px; text-align: center; }