/* ============================ SONORA · Listen to our planet ============================ */
:root {
    --bg: #050a14;
    --bg-2: #0a1424;
    --panel: #0e1a2d;
    --panel-2: #13223a;
    --line: #22344f;
    --text: #e8eef7;
    --muted: #9fb0c6;
    --accent: #5ee6c8;
    --accent-2: #8f7bff;
    --accent-ink: #03221c;
    --warn: #ffd166;
    --danger: #ff7b72;
    --focus: #ffd166;
    --radius: 14px;
    --fs: 16px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: var(--fs)/1.55 Inter, system-ui, "Segoe UI", sans-serif;
}

body {
    background:
        radial-gradient(1200px 500px at 85% -10%, rgba(143, 123, 255, .18), transparent 60%),
        radial-gradient(900px 400px at 0% 0%, rgba(94, 230, 200, .12), transparent 60%),
        var(--bg);
    min-height: 100vh;
}

.sonora { max-width: 1120px; margin: 0 auto; padding: 0 16px 48px; }
.sonora.large-text { --fs: 20px; font-size: 20px; }
.sonora.large-text .hint, .sonora.large-text .val { font-size: 17px; }

/* Alto contraste */
.sonora.high-contrast {
    --bg: #000; --panel: #000; --panel-2: #000; --line: #fff; --text: #fff; --muted: #fff;
    --accent: #ffe600; --accent-2: #00e5ff; --accent-ink: #000; --focus: #00e5ff;
}
.sonora.high-contrast .card { border-width: 2px; }
.sonora.high-contrast .hero, .sonora.high-contrast .card { background: #000; }

a { color: var(--accent); }
h1, h2, h3 { font-family: "Space Grotesk", Inter, sans-serif; line-height: 1.2; }
h2 { font-size: 1.25rem; margin: 0 0 12px; }
h3 { font-size: 1.02rem; margin: 18px 0 6px; color: var(--accent); }

:focus-visible { outline: 3px solid var(--focus) !important; outline-offset: 3px; }

.skip-link {
    position: absolute; left: 16px; top: -60px; z-index: 10;
    background: var(--accent); color: var(--accent-ink); padding: 10px 16px; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 12px; }

.visually-hidden {
    position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- Encabezado ---------- */
.hero { padding: 36px 0 20px; }
.brand { display: flex; align-items: center; gap: 18px; }
.brand h1 {
    margin: 0; font-size: clamp(2.6rem, 7vw, 4.4rem); letter-spacing: .14em; font-weight: 700;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.high-contrast .brand h1 { background: none; color: var(--accent); }
.brand h1:focus { outline: none; }
.slogan {
    margin: 4px 0 0; font-family: "Space Grotesk", sans-serif; font-weight: 500;
    letter-spacing: .42em; font-size: clamp(.8rem, 2.2vw, 1.05rem); color: var(--text);
}
.lead { max-width: 760px; color: var(--muted); font-size: 1.05rem; margin: 18px 0 0; }

.logo {
    position: relative; flex: none; width: 76px; height: 76px; border-radius: 50%;
    background: radial-gradient(circle at 35% 35%, #7fd6ff, #1d5fae 55%, #0b2350 80%);
    box-shadow: 0 0 0 7px rgba(94, 230, 200, .25), 0 0 0 15px rgba(143, 123, 255, .15), 0 0 40px rgba(94, 230, 200, .35);
}
.logo::after {
    content: ""; position: absolute; inset: 0; border-radius: 50%;
    background: repeating-linear-gradient(90deg, transparent 0 9px, rgba(255, 255, 255, .55) 9px 11px);
    -webkit-mask: linear-gradient(transparent 30%, #000 30% 70%, transparent 70%);
    mask: linear-gradient(transparent 30%, #000 30% 70%, transparent 70%);
}

/* ---------- Tarjetas ---------- */
.card {
    background: linear-gradient(180deg, var(--panel-2), var(--panel));
    border: 1px solid var(--line); border-radius: var(--radius);
    padding: 20px; margin-top: 18px;
}
.card:focus { outline: none; }

.source-grid { display: grid; grid-template-columns: auto 1fr; gap: 14px 18px; align-items: start; }
.source-grid .describe-own { grid-column: 1 / -1; display: grid; gap: 6px; }
@media (max-width: 720px) { .source-grid { grid-template-columns: 1fr; } }
.upload { display: grid; gap: 6px; }

textarea {
    width: 100%; background: var(--bg-2); color: var(--text); border: 1px solid var(--line);
    border-radius: 10px; padding: 10px 12px; font: inherit; resize: vertical;
}

/* ---------- Botones ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    background: linear-gradient(90deg, var(--accent), #63d3ff); color: var(--accent-ink);
    border: 0; border-radius: 10px; padding: 11px 18px; font: 600 1rem Inter, sans-serif; cursor: pointer;
    min-height: 44px; text-decoration: none;
}
.high-contrast .btn { background: var(--accent); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--line); }
.high-contrast .btn-outline { background: #000; color: #fff; border: 2px solid #fff; }
.btn-small { padding: 7px 12px; font-size: .92rem; min-height: 38px; }
.btn-play { min-width: 150px; }
label.btn { width: fit-content; }
.upload input:focus-visible + .hint, .upload:focus-within label.btn { outline: 3px solid var(--focus); outline-offset: 3px; }

/* ---------- Escenario ---------- */
.stage {
    position: relative; width: 100%; aspect-ratio: 16 / 9; background: #000;
    border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin-top: 4px;
}
.stage img, .stage video, .stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; object-fit: fill; }
.stage canvas { cursor: crosshair; }
.stage [hidden] { display: none; }

.controls { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; margin: 14px 0; }
.controls label { display: inline-flex; gap: 8px; align-items: center; color: var(--muted); }
input[type=range] { accent-color: var(--accent); }
input[type=checkbox] { width: 18px; height: 18px; accent-color: var(--accent); }

.hint { color: var(--muted); font-size: .9rem; margin: 6px 0; }
.val { color: var(--muted); font-size: .9rem; font-variant-numeric: tabular-nums; }
kbd { background: var(--bg-2); border: 1px solid var(--line); border-radius: 5px; padding: 0 6px; font-size: .85em; color: var(--text); }
.error { color: var(--danger); font-weight: 600; }

.progress { height: 8px; background: var(--bg-2); border-radius: 4px; overflow: hidden; margin-top: 14px; }
.progress > div { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width .2s; }

/* ---------- Capas ---------- */
.layers { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; }
.layer { background: var(--bg-2); border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; }
.layer.is-muted { opacity: .5; }
.layer-head { display: flex; align-items: center; gap: 8px; }
.layer-name { font-weight: 600; flex: 1; }
.layer-toggle { display: inline-flex; gap: 6px; align-items: center; color: var(--muted); font-size: .9rem; }
.sw { display: inline-block; width: 14px; height: 14px; border-radius: 4px; border: 1px solid rgba(255, 255, 255, .35); vertical-align: middle; }
.meter { height: 8px; background: #050a12; border-radius: 4px; margin: 9px 0 5px; overflow: hidden; }
.meter > div { height: 100%; transition: width .08s linear; }
.sw-points, .meter-points { background: linear-gradient(90deg, #ffb15a, #9fd8ff); }

fieldset.scan { margin: 0 0 14px; display: flex; flex-wrap: wrap; gap: 8px 22px; align-items: center; }
fieldset.scan label { color: var(--text); }
fieldset.scan .hint { flex-basis: 100%; margin: 0; }

.now { margin-top: 12px; font-family: "Space Grotesk", sans-serif; font-size: 1.05rem; min-height: 1.5em; }
.status {
    margin-top: 10px; background: var(--bg-2); border: 1px solid var(--line); border-left: 4px solid var(--accent);
    border-radius: 10px; padding: 10px 14px; min-height: 2.8em;
}

/* ---------- Accesibilidad ---------- */
.a11y-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
fieldset { border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin: 0; display: grid; gap: 8px; align-content: start; }
legend { padding: 0 6px; font-weight: 600; font-family: "Space Grotesk", sans-serif; }
fieldset label { display: flex; gap: 8px; align-items: center; }

.mapping { list-style: none; padding: 0; }
.mapping li { margin: 6px 0; }

/* ---------- Pareto ---------- */
.pareto-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 18px; align-items: start; }
@media (max-width: 800px) { .pareto-grid { grid-template-columns: 1fr; } }
.pareto-chart { width: 100%; height: auto; background: var(--bg-2); border: 1px solid var(--line); border-radius: 12px; }
.pareto-chart .axis { stroke: var(--line); }
.pareto-chart .axis-label { fill: var(--muted); font-size: 12px; }
.pareto-chart .front-line { fill: none; stroke: var(--accent); stroke-width: 1.5; opacity: .7; }
.pareto-chart .pt { fill: var(--accent); }
.pareto-chart .pt.sel { fill: #fff; stroke: var(--accent-2); stroke-width: 3; }
.pareto-chart .manual line { stroke: var(--warn); stroke-width: 2.5; }
.pareto-chart .manual text { fill: var(--warn); font-size: 12px; }
.pareto-chart .manual.sel line { stroke-width: 4; }
.pareto-grid input[type=range] { width: 100%; }
.slider-ends { display: flex; justify-content: space-between; color: var(--muted); font-size: .85rem; }
.scores { display: grid; grid-template-columns: auto 1fr; gap: 3px 12px; margin: 12px 0; font-variant-numeric: tabular-nums; }
.scores dt { color: var(--muted); }
.scores dd { margin: 0; }

/* ---------- Ayuda ---------- */
dialog.help {
    background: var(--panel); color: var(--text); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 22px; max-width: min(640px, calc(100vw - 32px));
}
dialog.help::backdrop { background: rgba(0, 0, 0, .7); }
dialog.help table { border-collapse: collapse; width: 100%; margin: 8px 0 12px; }
dialog.help th, dialog.help td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
dialog.help th { white-space: nowrap; }

footer { margin-top: 28px; color: var(--muted); font-size: .88rem; text-align: center; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ---------- Errores de Blazor ---------- */
#blazor-error-ui {
    background: #3b1111; color: #fff; bottom: 0; box-shadow: 0 -1px 2px rgba(0, 0, 0, .3);
    display: none; left: 0; padding: .7rem 1.25rem; position: fixed; width: 100%; z-index: 1000;
}
#blazor-error-ui a { color: var(--warn); }
#blazor-error-ui .dismiss { background: none; border: 0; color: #fff; cursor: pointer; position: absolute; right: .75rem; top: .5rem; }