:root {
    --bg: #0d0a12;
    --panel: #1b1424;
    --border: #3a2a4a;
    --text: #f2e9f8;
    --muted: #a593b5;
    --pumpkin: #ff7a1a;
    --slime: #7cff4f;
    --blood: #e0263a;
    font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
    color-scheme: dark;
}

* {
    box-sizing: border-box;
}

html {
    background: var(--bg);
}

body {
    margin: 0;
    min-height: 100vh;
    background: radial-gradient(ellipse at top, #2a1238 0%, var(--bg) 60%) fixed;
    color: var(--text);
}

.stage {
    max-width: 40rem;
    margin: 0 auto;
    padding: 2rem 1rem 3rem;
    display: grid;
    gap: 1.25rem;
}

h1 {
    margin: 0;
    font-size: clamp(2rem, 7vw, 3rem);
    color: var(--pumpkin);
    text-shadow: 0 0 18px rgb(255 122 26 / 0.5);
}

.hint {
    margin: 0.25rem 0 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.warning {
    margin: 0;
    padding: 0.75rem 1rem;
    border: 1px solid var(--blood);
    border-radius: 0.75rem;
    background: rgb(224 38 58 / 0.15);
}

.panel {
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 1rem;
    background: var(--panel);
}

label {
    display: grid;
    gap: 0.35rem;
}

label > span {
    font-weight: 600;
}

.devices {
    display: grid;
    gap: 0.75rem;
}

select,
button {
    font: inherit;
    color: inherit;
}

select {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    background: var(--bg);
}

button {
    cursor: pointer;
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    background: var(--bg);
    padding: 0.75rem 1rem;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.power {
    padding: 1.1rem;
    font-size: 1.4rem;
    font-weight: 700;
    border: none;
    background: var(--pumpkin);
    color: #1a0d00;
}

.power.on {
    background: var(--blood);
    color: #fff;
    animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
    50% {
        box-shadow: 0 0 24px rgb(224 38 58 / 0.7);
    }
}

.meter {
    position: relative;
    height: 0.6rem;
    border-radius: 1rem;
    background: var(--panel);
    overflow: hidden;
}

.meter > div {
    width: 0;
    height: 100%;
    background: var(--slime);
    transition: width 60ms linear;
}

.meter > div.hot {
    background: var(--blood);
}

/* The noise gate is closed: what the mic hears doesn't reach the speaker. */
.meter > div.gated {
    background: var(--muted);
    opacity: 0.5;
}

.meter > .threshold {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 3px;
    margin-left: -1px;
    background: var(--pumpkin);
}

output {
    color: var(--pumpkin);
}

.effects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(6rem, 1fr));
    gap: 0.75rem;
}

.effect {
    position: relative;
    display: grid;
    justify-items: center;
    gap: 0.25rem;
    padding: 1rem 0.5rem;
}

.effect .emoji {
    font-size: 2.2rem;
}

.effect.active {
    border-color: var(--slime);
    box-shadow: 0 0 14px rgb(124 255 79 / 0.35);
}

.effect kbd {
    position: absolute;
    top: 0.4rem;
    right: 0.5rem;
}

kbd {
    font-size: 0.7rem;
    color: var(--muted);
}

.controls {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 1rem;
}

.controls label {
    grid-column: 1;
}

.controls .mute {
    grid-column: 2;
    grid-row: 1 / span 2;
}

input[type='range'] {
    width: 100%;
    accent-color: var(--pumpkin);
}

.mute.on {
    border-color: var(--blood);
    background: rgb(224 38 58 / 0.25);
}

.status {
    margin: 0;
    text-align: center;
    font-weight: 600;
}

.tips summary {
    cursor: pointer;
    font-weight: 600;
}

.tips ul {
    margin: 0.75rem 0 0;
    padding-left: 1.2rem;
    color: var(--muted);
    line-height: 1.5;
}