/* ═══════════════════════════════════════════════════════════════════════════
   DEAD4RAT — TERMINAL DECAY
   Performance rules for this file: no backdrop-filter (it re-blurs the live
   canvas every frame), no infinite animations, solid panel backgrounds.
   ═══════════════════════════════════════════════════════════════════════════ */

:root {
    --bg: #000;
    --panel: #0a0806;
    --panel-2: #120d09;
    --line: #2b1d12;
    --line-hi: #5c3715;
    --accent: #ff5500;
    --accent-2: #ff9900;
    --accent-3: #ffdd00;
    --accent-dim: rgba(255, 85, 0, 0.14);
    --text: #efe6dc;
    --dim: #a89886;
    --muted: #908070;
    --ok: #33ff99;
    --warn: #ffcc33;
    --rec: #ff3344;
    --hud-h: 40px;
    --bar-h: 58px;
    --dock-w: 344px;
    --mono: 'Share Tech Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
    color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); overflow: hidden; }
body {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
}
body.idle, body.idle * { cursor: none !important; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent-3); outline-offset: 1px; }
kbd {
    font-family: var(--mono); font-size: 11px; padding: 1px 5px;
    border: 1px solid var(--line-hi); border-bottom-width: 2px; color: var(--accent-2); background: var(--panel-2);
}
a { color: var(--accent-2); }

#stage { position: fixed; display: block; background: #000; }
#camera { display: none; }

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    min-height: 30px; padding: 5px 11px;
    background: var(--panel-2); border: 1px solid var(--line-hi); color: var(--text);
    letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap;
    transition: background-color 0.12s, border-color 0.12s, color 0.12s;
}
.btn:hover { border-color: var(--accent); color: #fff; }
.btn:active { background: var(--accent-dim); }
.btn.on { background: var(--accent); border-color: var(--accent); color: #000; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-sm { min-height: 26px; padding: 3px 8px; font-size: 11px; }
.btn-ghost { background: transparent; color: var(--dim); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #000; font-weight: 700; }
.btn-primary:hover { background: #ff7a33; color: #000; }
.btn-rec, .btn-rec.on { background: var(--rec); border-color: var(--rec); color: #fff; }
.icon-btn { background: none; border: 0; color: var(--dim); padding: 4px 6px; min-width: 26px; }
.icon-btn:hover { color: var(--accent); }
.link-btn { background: none; border: 0; color: var(--dim); padding: 6px 0; letter-spacing: 0.08em; text-align: left; }
.link-btn:hover { color: var(--accent-2); }
.btn-row { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin: 6px 0; }
.row-end { display: flex; justify-content: flex-end; margin-top: 6px; }

.seg { display: flex; border: 1px solid var(--line-hi); margin: 6px 0; }
.seg-btn {
    flex: 1; min-height: 28px; padding: 3px 6px; background: transparent; border: 0;
    border-right: 1px solid var(--line); color: var(--dim); letter-spacing: 0.05em; font-size: 11px;
}
.seg-btn:last-child { border-right: 0; }
.seg-btn:hover { color: #fff; }
.seg-btn.on { background: var(--accent); color: #000; }
.seg-sm { margin: 0; flex: 1; }
.seg-sm .seg-btn { min-height: 24px; font-size: 10px; }

.switch { display: inline-flex; align-items: center; gap: 7px; background: none; border: 0; padding: 2px 0; color: var(--dim); letter-spacing: 0.06em; }
.switch-track { width: 30px; height: 16px; border: 1px solid var(--line-hi); background: #000; position: relative; flex: none; transition: background-color 0.12s, border-color 0.12s; }
.switch-knob { position: absolute; top: 2px; left: 2px; width: 10px; height: 10px; background: var(--muted); transition: transform 0.14s, background-color 0.12s; }
.switch.on .switch-track { border-color: var(--accent); background: var(--accent-dim); }
.switch.on .switch-knob { transform: translateX(14px); background: var(--accent); }
.switch.on .switch-label { color: var(--accent); }
.switch:disabled { opacity: 0.4; cursor: not-allowed; }

.select {
    background: #000; border: 1px solid var(--line-hi); color: var(--text); min-height: 26px; padding: 2px 6px;
    font-size: 11px; letter-spacing: 0.04em;
}
.select.sm { min-height: 26px; }
.text-input { width: 100%; background: #000; border: 1px solid var(--line-hi); color: #fff; padding: 7px 8px; margin: 6px 0; }
.color { width: 30px; height: 26px; padding: 0; border: 1px solid var(--line-hi); background: none; }

/* ── Slider ──────────────────────────────────────────────────────────────── */
.slider { -webkit-appearance: none; appearance: none; width: 100%; height: 22px; background: transparent; margin: 0; }
.slider::-webkit-slider-runnable-track {
    height: 4px; background: linear-gradient(to right, var(--accent) var(--pct, 0%), #2a2018 var(--pct, 0%));
}
.slider::-moz-range-track { height: 4px; background: #2a2018; }
.slider::-moz-range-progress { height: 4px; background: var(--accent); }
.slider::-webkit-slider-thumb { -webkit-appearance: none; width: 12px; height: 16px; margin-top: -6px; background: var(--text); border: 0; }
.slider::-moz-range-thumb { width: 12px; height: 16px; background: var(--text); border: 0; border-radius: 0; }
.slider:hover::-webkit-slider-thumb { background: var(--accent-3); }
.slider:disabled { opacity: 0.35; }

.param { display: grid; grid-template-columns: 86px 1fr 44px 24px; align-items: center; gap: 6px; min-height: 26px; }
.param.disabled { opacity: 0.45; }
.param-opts { grid-template-columns: 86px 1fr auto; margin: 3px 0; }
.param-label { color: var(--dim); font-size: 10.5px; letter-spacing: 0.06em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.param-value { text-align: right; font-variant-numeric: tabular-nums; color: var(--text); font-size: 11px; }
.lfo {
    width: 24px; height: 22px; padding: 0; background: transparent; border: 1px solid var(--line); color: var(--muted); font-size: 13px; line-height: 1;
}
.lfo:hover { color: var(--accent-2); border-color: var(--line-hi); }
.lfo.on { color: var(--ok); border-color: var(--ok); background: rgba(51, 255, 153, 0.08); }

/* ── Sections / text ─────────────────────────────────────────────────────── */
.section { padding: 10px 12px 12px; border-bottom: 1px solid var(--line); }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 26px; }
.section-head h3 { margin: 0; font-size: 11px; font-weight: 400; letter-spacing: 0.18em; color: var(--accent); }
.section-right { display: flex; align-items: center; gap: 6px; }
.hint { margin: 5px 0; color: var(--muted); font-size: 10.5px; line-height: 1.5; letter-spacing: 0.02em; }
.hint.accent { color: var(--accent-2); }
.hint.warn { color: var(--warn); }
.hint.center { text-align: center; }
.notice { margin: 10px 12px; padding: 8px 10px; border: 1px solid var(--line-hi); background: var(--panel-2); color: var(--accent-2); font-size: 11px; line-height: 1.5; }
.readout { color: var(--accent-2); font-size: 11px; letter-spacing: 0.05em; font-variant-numeric: tabular-nums; }
.count { color: var(--accent); letter-spacing: 0.1em; margin-right: auto; }
.toolbar { display: flex; align-items: center; gap: 6px; padding: 10px 12px; border-bottom: 1px solid var(--line); }

/* ── Meters ──────────────────────────────────────────────────────────────── */
.meter { display: grid; grid-template-columns: 46px 1fr 34px; align-items: center; gap: 6px; min-height: 18px; }
.meter-label { color: var(--dim); font-size: 10.5px; }
.meter-track { height: 6px; background: #1f1812; position: relative; overflow: hidden; }
.meter-fill { position: absolute; inset: 0; transform-origin: left; transform: scaleX(0); background: var(--accent); }
.meter-track.centered::before { content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: var(--line-hi); }
.meter-fill.abs { inset: 0 auto 0 50%; width: 0; transform: none; }
.meter-value { text-align: right; font-size: 10.5px; color: var(--dim); font-variant-numeric: tabular-nums; }
.band-line { display: grid; grid-template-columns: 12px 1fr; align-items: center; gap: 4px; }
.beat-dot { width: 8px; height: 8px; opacity: 0.15; }
.spectrum { width: 100%; height: 64px; display: block; background: #050403; border: 1px solid var(--line); margin: 6px 0; }
.bpm { color: var(--accent-3); font-size: 11px; }

/* ── Audio band picker ───────────────────────────────────────────────────── */
.bands { display: inline-flex; align-items: center; gap: 2px; }
.bands-label { color: var(--muted); font-size: 10px; margin-right: 4px; letter-spacing: 0.08em; }
.band {
    width: 22px; height: 22px; padding: 0; background: transparent; border: 1px solid var(--line); color: var(--muted);
    font-size: 10.5px;
}
.band:hover { border-color: var(--band); color: var(--band); }
.band.on { border-color: var(--band); color: #000; background: var(--band); }

/* ── HUD ─────────────────────────────────────────────────────────────────── */
.hud {
    position: fixed; top: 0; left: 0; right: 0; height: var(--hud-h); z-index: 20;
    display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 0 8px;
    background: var(--panel); border-bottom: 1px solid var(--line);
}
.hud-left, .hud-right { display: flex; align-items: center; gap: 6px; min-width: 0; }
.hud-right { overflow-x: auto; scrollbar-width: none; }
.hud-right::-webkit-scrollbar { display: none; }
.hud-brand { font-family: 'VT323', var(--mono); font-size: 24px; color: var(--accent); letter-spacing: 0.08em; margin-right: 4px; }
.hud-chip {
    display: inline-flex; align-items: center; gap: 6px; height: 24px; padding: 0 8px;
    border: 1px solid var(--line); background: transparent; color: var(--dim); font-size: 11px; letter-spacing: 0.05em; white-space: nowrap;
}
button.hud-chip:hover { border-color: var(--line-hi); color: #fff; }
.hud-chip.live { color: var(--accent-2); border-color: var(--line-hi); }
.hud-chip.dim { color: var(--muted); }
.hud-chip.rec { color: #fff; background: var(--rec); border-color: var(--rec); }
.hud-chip[data-health="good"] { color: var(--ok); }
.hud-chip[data-health="ok"] { color: var(--warn); }
.hud-chip[data-health="bad"] { color: var(--rec); }
.hud-level { width: 28px; height: 4px; background: #1f1812; overflow: hidden; }
.hud-level > span { display: block; height: 100%; background: var(--accent); transform-origin: left; transform: scaleX(0); }

/* ── Dock ────────────────────────────────────────────────────────────────── */
.dock {
    position: fixed; top: var(--hud-h); right: 0; bottom: var(--bar-h); width: var(--dock-w); z-index: 15;
    display: flex; flex-direction: column; background: var(--panel); border-left: 1px solid var(--line);
}
.tabs { display: grid; grid-template-columns: repeat(6, 1fr); border-bottom: 1px solid var(--line); flex: none; }
.tab {
    min-height: 36px; padding: 0 2px; background: transparent; border: 0; border-bottom: 2px solid transparent;
    color: var(--dim); font-size: 10.5px; letter-spacing: 0.08em;
}
.tab:hover { color: #fff; }
.tab.on { color: var(--accent); border-bottom-color: var(--accent); background: var(--panel-2); }
.dock-scroll { flex: 1; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: var(--line-hi) transparent; }
.panel-body { padding-bottom: 24px; }

/* Generator tiles */
.gen-group { margin-top: 8px; }
.gen-group-name { color: var(--muted); font-size: 10px; letter-spacing: 0.16em; margin-bottom: 4px; }
.gen-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.gen-tile {
    min-height: 32px; padding: 4px 8px; text-align: left; font-size: 11px; letter-spacing: 0.04em;
    background: linear-gradient(90deg, var(--fog) 0 3px, var(--panel-2) 3px); border: 1px solid var(--line); color: var(--text);
}
.gen-tile:hover { border-color: var(--line-hi); }
.gen-tile.on { border-color: var(--accent); color: #000; background: var(--accent); }

/* Effects */
.fx { border: 1px solid var(--line); margin-top: 5px; background: #070504; }
.fx.on { border-color: var(--line-hi); background: var(--panel-2); }
.fx-head { display: flex; align-items: center; gap: 8px; padding: 5px 8px; }
.fx-name {
    flex: 1; display: flex; align-items: center; gap: 6px; background: none; border: 0; padding: 4px 0; text-align: left;
    color: var(--dim); letter-spacing: 0.08em; font-size: 11.5px;
}
.fx.on .fx-name { color: var(--text); }
.fx-name:hover { color: #fff; }
.fx-band-dot { width: 6px; height: 6px; opacity: 0; }
.fx-params { padding: 2px 8px 8px; border-top: 1px solid var(--line); }
.fx-desc { margin: 6px 0 4px; }

/* Chips (multi-select) */
.chip-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; margin: 8px 0; }
.chip { min-height: 28px; padding: 3px 4px; background: transparent; border: 1px solid var(--line); color: var(--dim); font-size: 10.5px; letter-spacing: 0.05em; }
.chip:hover { border-color: var(--line-hi); color: #fff; }
.chip.on { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

/* Media layers */
.layer-list { list-style: none; margin: 6px 0 0; padding: 0; border: 1px solid var(--line); }
.layer { display: flex; align-items: center; border-bottom: 1px solid var(--line); }
.layer:last-child { border-bottom: 0; }
.layer.on { background: var(--panel-2); }
.layer-name { flex: 1; background: none; border: 0; text-align: left; padding: 7px 8px; color: var(--dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.layer.on .layer-name { color: var(--accent); }

/* ── Scene bar ───────────────────────────────────────────────────────────── */
.scenebar {
    position: fixed; left: 0; right: 0; bottom: 0; height: var(--bar-h); z-index: 20;
    display: flex; align-items: center; gap: 10px; padding: 0 8px;
    background: var(--panel); border-top: 1px solid var(--line);
}
.scene-slots { flex: 1; display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 5px; min-width: 0; }
.slot { position: relative; height: 42px; border: 1px solid var(--line); background: #070504; min-width: 0; }
.slot.empty { border-style: dashed; }
.slot.full { border-color: var(--line-hi); background: var(--panel-2); }
.slot.on { border-color: var(--accent); box-shadow: inset 0 -3px 0 var(--accent); }
.slot-main { width: 100%; height: 100%; display: flex; flex-direction: column; justify-content: center; gap: 2px; padding: 3px 8px; background: none; border: 0; text-align: left; min-width: 0; }
.slot-n { font-size: 10px; color: var(--muted); }
.slot.full .slot-n, .slot.on .slot-n { color: var(--accent); }
.slot-name { font-size: 11px; color: var(--dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.slot.full .slot-name { color: var(--text); }
.slot-main:hover .slot-name { color: #fff; }
.slot-tools { position: absolute; top: 1px; right: 1px; display: flex; }
.slot-tool { width: 20px; height: 20px; padding: 0; background: none; border: 0; color: var(--muted); font-size: 10px; opacity: 0.35; }
.slot:hover .slot-tool, .slot-tool:focus-visible { opacity: 1; }
.slot-tool:hover { color: var(--accent-3); }
.slot-tool:last-child:hover { color: var(--rec); }
.toast-act { margin-left: 12px; background: none; border: 1px solid currentColor; color: var(--accent-3); padding: 2px 8px; font-size: 11px; letter-spacing: 0.08em; }
.slot-rename { width: 100%; height: 100%; background: #000; border: 0; color: #fff; padding: 0 8px; }
.scene-tools { display: flex; align-items: center; gap: 6px; flex: none; }
.morph { display: flex; align-items: center; gap: 6px; color: var(--dim); font-size: 10.5px; }
.morph .slider { width: 90px; }
.morph b { font-weight: 400; color: var(--text); width: 34px; font-variant-numeric: tabular-nums; }

/* ── Boot ────────────────────────────────────────────────────────────────── */
.boot {
    position: fixed; inset: 0; z-index: 30; display: flex; align-items: center; justify-content: center; padding: 16px;
    background: radial-gradient(ellipse at 50% 40%, #1a0c02 0%, #000 70%);
    overflow-y: auto;
}
.boot-card { width: 100%; max-width: 440px; padding: 28px 26px 18px; background: var(--panel); border: 1px solid var(--line-hi); display: flex; flex-direction: column; gap: 12px; }
.brand { margin: 0 0 6px; font-family: 'VT323', var(--mono); font-weight: 400; font-size: 64px; line-height: 0.9; color: var(--accent); letter-spacing: 0.06em; }
.brand-sub { display: block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em; color: var(--dim); margin-top: 8px; }
.boot-card .notice { margin: 0; }
.boot-options { display: flex; gap: 20px; }
.boot-go { min-height: 48px; font-size: 16px; letter-spacing: 0.18em; }
.boot-demo { min-height: 38px; }
.about { border-top: 1px solid var(--line); padding-top: 8px; }
.kv { display: flex; justify-content: space-between; padding: 3px 0; color: var(--dim); }
.kv b { color: var(--accent); font-weight: 400; }

/* ── Overlays ────────────────────────────────────────────────────────────── */
.modal { position: fixed; inset: 0; z-index: 40; background: rgba(0, 0, 0, 0.78); display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal-card { width: 100%; max-width: 460px; max-height: 90vh; overflow-y: auto; background: var(--panel); border: 1px solid var(--line-hi); padding: 20px; }
.modal-card h2 { margin: 0 0 12px; font-size: 13px; font-weight: 400; letter-spacing: 0.2em; color: var(--accent); }
.keys { display: grid; grid-template-columns: auto 1fr; gap: 7px 14px; margin: 0 0 12px; }
.keys dt { white-space: nowrap; }
.keys dd { margin: 0; color: var(--dim); }

.toast {
    position: fixed; left: 50%; bottom: calc(var(--bar-h) + 14px); transform: translateX(-50%); z-index: 45;
    max-width: calc(100vw - 32px); padding: 9px 14px; background: var(--panel-2); border: 1px solid var(--accent); color: var(--text);
    font-size: 11.5px; letter-spacing: 0.04em;
}
.toast.warn { border-color: var(--warn); color: var(--warn); }

.unhide {
    position: fixed; right: 12px; bottom: 12px; z-index: 20; padding: 6px 10px;
    font-family: 'VT323', var(--mono); font-size: 18px; color: var(--accent); background: rgba(0, 0, 0, 0.5); border: 1px solid var(--line);
    opacity: 0.25; transition: opacity 0.2s;
}
.unhide:hover, .unhide:focus-visible { opacity: 1; }
body.idle .unhide { opacity: 0; }

.sander { position: fixed; inset: 0; z-index: 50; background: #050505; }
.sander iframe { width: 100%; height: 100%; border: 0; display: block; }

/* ── Narrow screens: dock becomes a bottom sheet ─────────────────────────── */
@media (max-width: 720px) {
    :root { --dock-w: 100vw; }
    .dock { top: auto; left: 0; height: 46vh; border-left: 0; border-top: 1px solid var(--line-hi); }
    .hud-right .btn-sm { padding: 3px 7px; }
    .hud-left .hud-chip { display: none; }
    .hud-left .hud-chip.rec { display: inline-flex; }
    .hud-right { flex: 1; justify-content: flex-end; }
    .hud-opt, .hud-txt { display: none; }
    .scenebar { gap: 6px; }
    .scene-slots { display: flex; overflow-x: auto; scrollbar-width: none; }
    .slot { flex: 0 0 64px; }
    .morph .slider, .morph span { display: none; }
    .scene-tools .select { display: none; }
    .brand { font-size: 52px; }
    .param { grid-template-columns: 76px 1fr 40px 24px; }
}

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