:root {
    --bg-a: #0b1021;
    --bg-b: #111a36;
    --card: rgba(255, 255, 255, 0.9);
    --card-strong: rgba(255, 255, 255, 0.97);
    --text: #0f172a;
    --muted: #526079;
    --primary: #2563eb;
    --primary-2: #3b82f6;
    --ring: rgba(59, 130, 246, 0.35);
}

* {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: Inter, Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(1000px 500px at 10% -20%, #1d4ed8 0%, transparent 55%),
        radial-gradient(900px 500px at 90% -20%, #7c3aed 0%, transparent 50%),
        linear-gradient(160deg, var(--bg-a), var(--bg-b));
}

.container {
    max-width: 1080px;
    margin: 28px auto;
    padding: 0 16px 18px;
}

h1 {
    margin: 0 0 14px;
    color: #eff6ff;
    letter-spacing: 0.2px;
}

h2 {
    margin-top: 0;
}

.panel {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 16px;
    padding: 18px;
    margin-bottom: 14px;
    box-shadow: 0 18px 40px rgba(2, 6, 23, 0.24);
    backdrop-filter: blur(8px);
}

.panel:first-of-type {
    background: var(--card-strong);
    border: 1px solid rgba(148, 163, 184, 0.35);
}

form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: end;
}

label {
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 13px;
    color: var(--muted);
    font-weight: 600;
}

input[type="text"],
input[type="number"],
select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    min-width: 150px;
    background: #fff;
    color: var(--text);
    font: inherit;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--primary-2);
    box-shadow: 0 0 0 4px var(--ring);
}

button {
    padding: 10px 14px;
    border: 0;
    border-radius: 10px;
    background: linear-gradient(180deg, var(--primary-2), var(--primary));
    color: #fff;
    font-weight: 700;
    letter-spacing: 0.2px;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 120ms ease, filter 120ms ease;
    min-height: 44px;
}

button:hover {
    transform: translateY(-1px);
    filter: brightness(1.03);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.35);
}

.secondary {
    background: linear-gradient(180deg, #64748b, #475569);
}

.secondary:hover {
    box-shadow: 0 8px 16px rgba(71, 85, 105, 0.35);
}

.danger {
    background: linear-gradient(180deg, #ef4444, #b91c1c);
}

.danger:hover {
    box-shadow: 0 8px 18px rgba(185, 28, 28, 0.45);
}

.track-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.track-row select {
    flex: 1 1 220px;
    min-width: 0;
}

.track-meta-editor {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: end;
    margin-top: 12px;
}

.track-meta-editor label {
    min-width: 180px;
    flex: 1 1 180px;
}

.hidden-player {
    display: none;
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 12px 0 12px;
    flex-wrap: wrap;
}

#togglePlay {
    min-width: 100px;
    font-size: 16px;
}

.time-label {
    font-size: 14px;
    color: #1e293b;
    font-weight: 800;
    background: #dbeafe;
    border: 1px solid #93c5fd;
    border-radius: 999px;
    padding: 7px 10px;
    white-space: nowrap;
}

.status {
    min-height: 20px;
    color: #1d4ed8;
    font-weight: 700;
}

.hint {
    margin-bottom: 0;
    font-size: 13px;
    color: var(--muted);
}

.wave-card {
    position: relative;
    height: 240px;
    border: 1px solid rgba(191, 219, 254, 0.35);
    border-radius: 14px;
    margin-bottom: 12px;
    background:
        radial-gradient(300px 160px at 20% -20%, rgba(96, 165, 250, 0.25), transparent 70%),
        radial-gradient(260px 140px at 85% -10%, rgba(167, 139, 250, 0.26), transparent 70%),
        linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    overflow: hidden;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.wave-card.create-mode {
    cursor: copy;
}

.wave-card.seek-mode {
    cursor: pointer;
}

#waveCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.wave-markers {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.wave-marker {
    position: absolute;
    bottom: 10px;
    transform: translateX(-50%);
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 3px solid #0f172a;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 16px;
    pointer-events: auto;
    cursor: pointer;
    z-index: 2;
    box-shadow: 0 8px 20px rgba(2, 6, 23, 0.35);
    touch-action: none;
    user-select: none;
}

.wave-marker:hover {
    transform: translateX(-50%);
    filter: none;
    box-shadow: 0 8px 20px rgba(2, 6, 23, 0.35);
}

.wave-marker::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 44px;
    transform: translateX(-50%);
    width: 3px;
    height: 160px;
    background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--marker-color, #ffffff) 90%, white 10%),
        color-mix(in srgb, var(--marker-color, #ffffff) 35%, transparent 65%)
    );
}

.marker-quick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 10px;
    margin-bottom: 10px;
}

.marker-quick-btn {
    min-height: 56px;
    border-radius: 12px;
    border: 2px solid #0f172a;
    color: #fff;
    font-size: 16px;
    font-weight: 800;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

.marker-list {
    display: grid;
    gap: 8px;
    margin-top: 12px;
}

.marker-item {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 9px 11px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.marker-meta {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.marker-mini {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 1px solid #0f172a;
}

.marker-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.marker-actions button {
    padding: 8px 12px;
    font-size: 13px;
}

.marker-actions .play-main {
    padding: 11px 16px;
    font-size: 15px;
}

.compact-panel {
    padding: 10px 16px;
}

details summary {
    cursor: pointer;
    font-weight: 800;
    color: #0f172a;
}

.sub-form {
    margin-top: 12px;
}

@media (max-width: 720px) {
    .container {
        padding: 0 10px 14px;
        margin: 18px auto;
    }

    .panel {
        padding: 14px 12px;
        border-radius: 14px;
    }

    .player-controls {
        flex-direction: column;
        align-items: stretch;
    }

    #togglePlay,
    #waveMode,
    .time-label,
    .track-row select,
    .track-meta-editor > * {
        width: 100%;
    }

    .track-row {
        flex-direction: column;
        align-items: stretch;
    }

    .track-meta-editor {
        flex-direction: column;
        align-items: stretch;
    }

    .track-meta-editor label {
        min-width: 0;
        width: 100%;
    }

    .wave-card {
        height: 180px;
    }

    .wave-marker {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }

    .marker-item {
        flex-direction: column;
        align-items: stretch;
    }

    .marker-actions {
        width: 100%;
    }

    .marker-actions button {
        flex: 1 1 120px;
    }

    form {
        flex-direction: column;
        align-items: stretch;
    }

    .sub-form {
        display: flex;
        flex-direction: column;
    }
}