:root {
    color-scheme: light dark;
    --bg: #f7f3ea;
    --bg-soft: #efe7d8;
    --card: rgba(255, 255, 255, .86);
    --text: #202018;
    --muted: #746f63;
    --line: rgba(32, 32, 24, .12);
    --accent: #43664f;
    --accent-strong: #284636;
    --accent-text: #ffffff;
    --shadow: 0 28px 90px rgba(35, 31, 21, .18);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #11130f;
        --bg-soft: #1a2018;
        --card: rgba(26, 30, 23, .82);
        --text: #f7f1e4;
        --muted: #b8ad98;
        --line: rgba(247, 241, 228, .14);
        --accent: #8bb992;
        --accent-strong: #a7d1aa;
        --accent-text: #12150f;
        --shadow: 0 28px 90px rgba(0, 0, 0, .35);
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at 15% 10%, rgba(67, 102, 79, .28), transparent 32rem),
        radial-gradient(circle at 88% 18%, rgba(170, 131, 73, .18), transparent 28rem),
        linear-gradient(135deg, var(--bg), var(--bg-soft));
    color: var(--text);
}

.page {
    min-height: 100vh;
    display: grid;
    align-content: center;
    justify-items: center;
    gap: 18px;
    padding: clamp(20px, 5vw, 64px);
}

.audio-card {
    width: min(880px, 100%);
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: clamp(22px, 4vw, 44px);
    align-items: center;
    padding: clamp(22px, 4vw, 42px);
    border: 1px solid var(--line);
    border-radius: 34px;
    background: var(--card);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.visual {
    position: relative;
    display: grid;
    place-items: center;
    aspect-ratio: 1;
    border-radius: 30px;
    overflow: hidden;
    background:
        linear-gradient(145deg, rgba(255,255,255,.18), rgba(255,255,255,0)),
        radial-gradient(circle at 35% 32%, rgba(255,255,255,.32), transparent 0 26%, rgba(255,255,255,0) 27%),
        linear-gradient(135deg, var(--accent), var(--accent-strong));
}

.pulse {
    position: absolute;
    width: 54%;
    aspect-ratio: 1;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, .45);
    box-shadow: inset 0 0 0 18px rgba(255,255,255,.08), 0 0 45px rgba(0,0,0,.12);
}

.bars {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    width: min(178px, 82%);
    height: 92px;
}

.bars span {
    --level: .08;
    display: block;
    flex: 1 1 0;
    max-width: 7px;
    min-width: 3px;
    height: calc(12px + (var(--level) * 78px));
    border-radius: 999px;
    background: rgba(255, 255, 255, .9);
    box-shadow: 0 8px 22px rgba(0, 0, 0, .14);
    transition: height 80ms linear, opacity 120ms ease;
    opacity: .72;
}

.audio-card.is-playing .bars span {
    opacity: .96;
}

.content { min-width: 0; }

.brand {
    margin: 0 0 12px;
    color: var(--accent-strong);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .14em;
    text-transform: uppercase;
}

h1 {
    margin: 0;
    font-size: clamp(34px, 6vw, 60px);
    line-height: .98;
    letter-spacing: -.055em;
}

.subtitle {
    margin: 18px 0 0;
    max-width: 52ch;
    color: var(--muted);
    font-size: clamp(17px, 2.2vw, 20px);
    line-height: 1.55;
}

.meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 12px 0 0;
    color: var(--muted);
    font-size: 14px;
}

.player-box {
    margin-top: 28px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: rgba(255, 255, 255, .30);
}

@media (prefers-color-scheme: dark) {
    .player-box { background: rgba(0, 0, 0, .16); }
}

audio {
    width: 100%;
    display: block;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-top: 18px;
}

button {
    appearance: none;
    border: 0;
    cursor: pointer;
    font: inherit;
}

.primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border-radius: 999px;
    padding: 13px 20px;
    background: var(--accent-strong);
    color: var(--accent-text);
    font-weight: 800;
    box-shadow: 0 14px 30px rgba(40, 70, 54, .24);
}

.primary:disabled {
    opacity: .48;
    cursor: wait;
}

.play-icon {
    font-size: 13px;
    transform: translateX(1px);
}

.status {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.45;
}

.status[data-type="error"],
.notice {
    color: #a23b2a;
}

.notice {
    margin: 14px 0 0;
    font-size: 14px;
}

.footer-note {
    max-width: min(820px, 100%);
    margin: 0;
    color: var(--muted);
    font-size: 13px;
    text-align: center;
}

@media (max-width: 720px) {
    .audio-card {
        grid-template-columns: 1fr;
    }

    .visual {
        width: min(260px, 100%);
        margin-inline: auto;
    }

    h1 { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
    }
}