:root {
    --bg: #f6f4ef;
    --surface: #ffffff;
    --text: #1d1f22;
    --muted: #5b6168;
    --border: #d9d6cf;
    --accent: #b3261e;
    --accent-text: #ffffff;
    --focus: #1f6feb;
}

@media ( prefers-color-scheme: dark ) {
    :root:not( [data-theme="light"] ) {
        --bg: #0f1214;
        --surface: #181c1f;
        --text: #eceff1;
        --muted: #9aa3ab;
        --border: #2c3236;
        --accent: #e5534b;
        --accent-text: #0f1214;
        --focus: #58a6ff;
    }
}

:root[data-theme="dark"] {
    --bg: #0f1214;
    --surface: #181c1f;
    --text: #eceff1;
    --muted: #9aa3ab;
    --border: #2c3236;
    --accent: #e5534b;
    --accent-text: #0f1214;
    --focus: #58a6ff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var( --bg );
    color: var( --text );
    font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
    max-width: 30rem;
    margin: 0 auto;
    padding: 2rem 1rem 3rem;
}

h1 {
    margin: 0;
    font-size: 1.75rem;
}

.lede {
    margin: 0.25rem 0 1.5rem;
    color: var( --muted );
}

button {
    min-height: 2.75rem;
    padding: 0.5rem 1rem;
    border: 1px solid var( --border );
    border-radius: 0.5rem;
    background: var( --surface );
    color: var( --text );
    font: inherit;
    cursor: pointer;
}

button:focus-visible,
input:focus-visible {
    outline: 2px solid var( --focus );
    outline-offset: 2px;
}

button.primary {
    width: 100%;
    min-height: 3.5rem;
    border: 0;
    background: var( --accent );
    color: var( --accent-text );
    font-size: 1.25rem;
    font-weight: 600;
}

.status {
    margin: 1rem 0 0;
    font-weight: 600;
}

.now-playing {
    min-height: 1.5em;
    margin: 0.25rem 0 1.5rem;
    color: var( --muted );
}

.offset {
    padding: 1rem;
    border: 1px solid var( --border );
    border-radius: 0.5rem;
    background: var( --surface );
}

.offset-header {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
}

.offset input[type="range"] {
    width: 100%;
    margin: 0.75rem 0;
    accent-color: var( --accent );
}

.offset-buttons {
    display: grid;
    grid-template-columns: repeat( 3, 1fr );
    gap: 0.5rem;
}

.hint {
    margin: 0.75rem 0 0;
    color: var( --muted );
    font-size: 0.875rem;
}

.diagnostics {
    margin-top: 1.5rem;
    color: var( --muted );
}

.diagnostics pre {
    margin: 0.5rem 0 0;
    white-space: pre-wrap;
    font-size: 0.875rem;
}