/* Escucha libre: usa la identidad de DBQuiz en claro y oscuro. */
.eq-intro-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:35px}
.eq-intro-grid .eq-intro-actions .primary{margin-top:0}
/* Altura y alineación compartidas de las acciones de la introducción. */
.eq-intro-actions>.primary:not(:disabled),.eq-intro-actions>.eq-lab-open{box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;min-height:56px;height:56px;margin:0;padding:0 20px;font-size:14px;line-height:1.2;box-shadow:0 4px 0 color-mix(in srgb,var(--text) 20%,transparent)}
@media(hover:hover){.eq-intro-actions>.primary:not(:disabled):hover,.eq-intro-actions>.eq-lab-open:hover{transform:translateY(3px);box-shadow:0 1px 0 color-mix(in srgb,var(--text) 20%,transparent)}}
.eq-intro-actions>.primary:not(:disabled):active,.eq-intro-actions>.eq-lab-open:active{transform:translateY(4px);box-shadow:none}
@media(max-width:480px){.eq-intro-actions>button{flex:1 1 100%;width:100%}}
@media(max-width:1020px){.eq-intro-grid{grid-template-columns:1fr;gap:36px}}

.eq-lab-open{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:54px;border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--text);padding:14px 19px;font-weight:700;box-shadow:0 4px 0 color-mix(in srgb,var(--text) 18%,transparent);transition:transform .16s,box-shadow .16s,border-color .16s}
.eq-lab-open svg{width:19px;height:19px;color:var(--teal)}
@media(hover:hover){.eq-lab-open:hover{transform:translateY(3px);box-shadow:0 1px 0 color-mix(in srgb,var(--text) 20%,transparent);border-color:var(--teal)}}
.eq-lab-open:active{transform:translateY(4px);box-shadow:none}
.eq-lab-dialog{width:min(660px,calc(100vw - 24px));max-width:660px;max-height:min(92vh,960px);margin:auto;padding:30px 34px 34px;background:var(--paper);color:var(--text);border:1px solid var(--line);border-radius:22px;box-shadow:0 28px 100px #0005;overflow-y:auto}
.eq-lab-dialog::backdrop{background:rgba(4,8,10,.72);backdrop-filter:blur(6px)}
.eq-lab-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}
.eq-lab-head .eyebrow{color:var(--purple);font-size:10px}
.eq-lab-close{flex:none;display:grid;place-items:center;color:var(--text);background:var(--soft);border-color:var(--muted)}
.eq-lab-body .quiz-meta{margin:0 0 12px}
.eq-lab-body h2{font-size:clamp(27px,4vw,34px);line-height:1.1;letter-spacing:-.045em;margin:0 0 12px}
.eq-lab-intro{color:var(--muted);font-size:14px;line-height:1.55;margin:0 0 22px}
.eq-lab-label{font-size:10px;font-weight:800;letter-spacing:.12em;color:var(--muted);margin-bottom:8px}
.eq-lab-source,.eq-lab-modes{display:inline-flex;align-items:center;gap:3px;padding:3px;border:1px solid var(--line);border-radius:10px;background:var(--paper)}
.eq-lab-source button,.eq-lab-modes button{padding:9px 13px;border:0;border-radius:7px;background:transparent;color:var(--muted);font-size:12px;font-weight:700}
.eq-lab-source button[aria-pressed=true],.eq-lab-modes button[aria-pressed=true]{background:var(--text);color:var(--paper)}
.eq-lab-track{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:38px;margin:8px 0 6px;color:var(--text);font-size:13px;font-weight:700}
.eq-lab-track span{overflow-wrap:anywhere}
.eq-lab-track button{flex:none;border:0;background:transparent;color:var(--purple);font-size:12px;font-weight:700}
.eq-lab-track button:disabled{opacity:.55;cursor:wait}
.eq-lab-dialog [hidden]{display:none!important}
.eq-lab-player{border:1px solid var(--line);border-radius:14px;background:var(--soft);padding:15px 16px;transition:background .2s,border-color .2s,box-shadow .2s}
.eq-lab-player--eq{border-color:color-mix(in srgb,var(--purple) 65%,var(--line));background:color-mix(in srgb,var(--purple) 8%,var(--soft));box-shadow:0 0 0 1px color-mix(in srgb,var(--purple) 16%,transparent),0 0 25px color-mix(in srgb,var(--purple) 16%,transparent)}
.eq-lab-wave{display:flex;align-items:center;justify-content:space-between;gap:3px;height:46px;overflow:hidden}
.eq-lab-wave span{height:var(--bar);min-height:3px;flex:1;max-width:5px;border-radius:8px;background:var(--teal);opacity:.74;transform-origin:center}
.eq-lab-player--eq .eq-lab-wave span{background:var(--purple);opacity:.9}
.eq-lab-wave.is-playing span{animation:eq-lab-pulse 1s ease-in-out var(--delay) infinite alternate}
@keyframes eq-lab-pulse{from{transform:scaleY(.5);opacity:.55}to{transform:scaleY(1);opacity:1}}
.eq-lab-player-controls{display:flex;align-items:center;gap:12px;margin-top:10px}
.eq-lab-play{display:grid;place-items:center;flex:none;width:43px;height:43px;border:0;border-radius:50%;background:var(--text);color:var(--paper);font-size:16px}
.eq-lab-play:disabled{opacity:.5;cursor:wait}
.eq-lab-state{margin-left:auto;font-size:11px;color:var(--muted)}
.eq-lab-error{margin:10px 0 0;padding:11px 14px;border-radius:9px;background:var(--purple-soft);color:var(--accent);font-size:13px}
.eq-lab-controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:22px}
.eq-lab-control{min-width:0}
.eq-lab-control-head{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:38px;margin-bottom:3px;font-size:13px;font-weight:700}
.eq-lab-control-head output{color:var(--purple);white-space:nowrap}
.eq-lab-frequency-number{display:inline-flex;align-items:center;gap:5px;color:var(--muted);font-size:12px}
.eq-lab-frequency-number input{width:67px;padding:6px;border:1px solid var(--line);border-radius:7px;background:var(--soft);color:var(--text);font-size:13px;font-weight:700;text-align:right;appearance:textfield}
.eq-lab-frequency-number input::-webkit-inner-spin-button{appearance:none}
.eq-lab-range,.eq-lab-volume input{width:100%;accent-color:var(--purple);cursor:pointer}
.eq-lab-endpoints{display:flex;justify-content:space-between;gap:5px;color:var(--muted);font-size:10px;font-weight:600}
.eq-lab-presets{display:flex;flex-wrap:wrap;gap:5px;margin-top:11px}
.eq-lab-presets button{min-width:32px;padding:6px 5px;border:1px solid var(--line);border-radius:7px;background:var(--paper);color:var(--muted);font-size:11px;font-weight:700}
.eq-lab-presets button[aria-pressed=true]{border-color:var(--purple);background:var(--purple-soft);color:var(--purple)}
.eq-lab-volume{display:flex;align-items:center;gap:10px;margin-top:18px;font-size:12px;font-weight:700}
.eq-lab-volume input{max-width:180px}
.eq-lab-volume output{min-width:37px;color:var(--muted);text-align:right}
.eq-lab-foot{color:var(--muted);font-size:12px;line-height:1.55;margin:18px 0 0}
.eq-lab-open:focus-visible,.eq-lab-dialog button:focus-visible,.eq-lab-dialog input:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
@media(max-width:600px){.eq-lab-dialog{padding:22px 20px 26px;border-radius:18px}.eq-lab-controls{grid-template-columns:1fr;gap:14px}.eq-lab-state{display:none}.eq-lab-body h2{font-size:27px}}
@media(max-width:370px){.eq-lab-dialog{padding:20px 16px 24px}.eq-lab-track{align-items:flex-start;flex-direction:column;gap:4px}.eq-lab-player-controls{gap:7px}.eq-lab-modes button{padding:8px}}
@media(prefers-reduced-motion:reduce){.eq-lab-open,.eq-lab-player,.eq-lab-wave span{transition:none;animation:none!important}}