:root {
    color-scheme: dark;
    --ink: #f3eee5;
    --muted: #98958f;
    --acid: #d7ff45;
    --panel: rgba(19, 19, 18, 0.78);
    --line: rgba(255, 255, 255, 0.16);
}

* { box-sizing: border-box; }

html, body {
    width: 100%;
    min-height: 100%;
    margin: 0;
}

body {
    overflow: hidden;
    background: #050208;
    color: var(--ink);
    font-family: Arial, Helvetica, sans-serif;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    background:
        radial-gradient(circle at 50% 46%, transparent 20%, rgba(20, 0, 3, .42) 58%, rgba(0, 0, 0, .92) 100%),
        repeating-linear-gradient(0deg, rgba(120, 0, 10, .035) 0 1px, transparent 1px 4px);
    mix-blend-mode: multiply;
}

#viewer-shell {
    position: relative;
    width: 100vw;
    height: 100dvh;
    min-height: 480px;
}

.title-block {
    position: absolute;
    z-index: 3;
    top: clamp(24px, 5vw, 64px);
    left: clamp(24px, 6vw, 88px);
    pointer-events: none;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--acid);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .24em;
}

h1 {
    margin: 0;
    font-size: clamp(34px, 5vw, 72px);
    font-weight: 900;
    letter-spacing: -.06em;
    line-height: .9;
    text-transform: uppercase;
}

#head-stage {
    position: absolute;
    inset: 0;
    cursor: grab;
    touch-action: none;
}

#head-stage:active { cursor: grabbing; }
#head-stage canvas { display: block; }

#loading-message {
    position: absolute;
    z-index: 1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--muted);
    font-size: 11px;
    letter-spacing: .18em;
    text-transform: uppercase;
}

#loading-message.server-warning {
    width: min(520px, calc(100vw - 48px));
    color: var(--ink);
    line-height: 1.8;
    text-align: center;
}

#loading-message.server-warning strong { color: var(--acid); }

.control-panel {
    position: absolute;
    z-index: 3;
    right: clamp(18px, 4vw, 64px);
    bottom: clamp(52px, 8vw, 90px);
    display: flex;
    width: min(300px, calc(100vw - 32px));
    max-height: calc(100dvh - 110px);
    flex-direction: column;
    gap: 14px;
    padding: 15px;
    border: 1px solid var(--line);
    background: var(--panel);
    backdrop-filter: blur(14px);
}

.control-panel label, .control-heading {
    color: var(--muted);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
}

.audio-controls {
    display: grid;
    gap: 7px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}

.audio-button-row {
    display: block;
}

.audio-button-row button { width: 100%; }

.audio-controls label {
    display: flex;
    justify-content: space-between;
}

.audio-controls output { color: var(--acid); }

#audio-status {
    margin: 0;
    color: var(--muted);
    font-size: 9px;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.texture-control { display: grid; gap: 8px; }

.warp-ui {
    display: none;
    min-height: 0;
    flex-direction: column;
    border-top: 1px solid var(--line);
}

#reset-view { display: none; }

.control-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    padding: 12px 0 10px;
}

.control-tabs .tab-button {
    height: 32px;
    padding: 0 5px;
    color: var(--muted);
    font-size: 9px;
    letter-spacing: .08em;
}

.control-tabs .tab-button.active {
    border-color: var(--acid);
    color: #111;
    background: var(--acid);
}

.morph-controls {
    display: none;
    grid-template-columns: 1fr;
    gap: 6px;
    overflow-y: auto;
    padding-right: 5px;
}

.morph-controls.active {
    display: grid;
}

.control-heading { margin: 0 0 4px; }

.morph-controls label {
    display: flex;
    justify-content: space-between;
    letter-spacing: .10em;
}

.morph-controls output {
    color: var(--acid);
    font-variant-numeric: tabular-nums;
}

.select-wrap { position: relative; }
.select-wrap::after {
    content: "↓";
    position: absolute;
    top: 50%;
    right: 12px;
    transform: translateY(-54%);
    pointer-events: none;
    color: var(--acid);
}

select, button {
    height: 42px;
    border: 1px solid var(--line);
    border-radius: 0;
    color: var(--ink);
    background: #111;
    font: inherit;
    font-size: 12px;
}

select {
    width: 100%;
    padding: 0 38px 0 12px;
    appearance: none;
}

input[type="range"] {
    width: 100%;
    margin: 0 0 5px;
    accent-color: var(--acid);
    cursor: ew-resize;
}

button {
    padding: 0 15px;
    cursor: pointer;
    color: var(--acid);
    font-weight: 700;
    text-transform: uppercase;
}

button:hover, button:focus-visible, select:focus-visible, input:focus-visible {
    border-color: var(--acid);
    outline: none;
}

.instructions {
    position: absolute;
    z-index: 2;
    bottom: 24px;
    left: 50%;
    width: max-content;
    margin: 0;
    transform: translateX(-50%);
    color: var(--muted);
    font-size: 10px;
    letter-spacing: .12em;
    text-transform: uppercase;
    pointer-events: none;
}

.instructions span { color: var(--ink); }

@media (max-width: 620px) {
    .control-panel {
        right: 16px;
        bottom: 60px;
        left: 16px;
        width: auto;
        max-height: 58vh;
    }

    .instructions { bottom: 22px; }
}