:root {
    --bg: #121212;
    --bg-raised: #1e1e1e;
    --text: #f5f5f5;
    --text-dim: #a8a8a8;
    --accent: #ffb020;
    --border: #333;
    color-scheme: dark;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

a { color: inherit; }

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 28px;
    border-bottom: 1px solid var(--border);
}

.topbar h1 { margin: 0; font-size: 1.6rem; letter-spacing: 0.02em; }
.topbar h1 a { text-decoration: none; }

.btn {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-raised);
    color: var(--text);
    text-decoration: none;
    font-size: 0.95rem;
    cursor: pointer;
}
.btn:hover { border-color: var(--text-dim); }

.btn-primary {
    background: var(--accent);
    color: #1a1200;
    border-color: var(--accent);
    font-weight: 600;
}
.btn-primary:hover { filter: brightness(1.08); }

/* Board / notes */
.board { padding: 28px; }
.empty { color: var(--text-dim); }

.notes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 22px;
}

.note {
    display: block;
    background: var(--bg-raised);
    border-left: 5px solid var(--accent);
    border-radius: 6px;
    padding: 18px 18px 14px;
    text-decoration: none;
    color: var(--text);
    box-shadow: 0 4px 14px rgba(0,0,0,0.4);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    min-height: 150px;
}
.note:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(0,0,0,0.5); }

.note h2 { margin: 0 0 10px; font-size: 1.1rem; }

.note-preview { overflow: hidden; max-height: 6.5em; position: relative; }
.note-preview p { margin: 0 0 2px; font-size: 0.88rem; color: var(--text-dim); white-space: pre-wrap; }

.note-0 { border-left-color: #ffb020; }
.note-1 { border-left-color: #ff6b6b; }
.note-2 { border-left-color: #4dd0e1; }
.note-3 { border-left-color: #b388ff; }
.note-4 { border-left-color: #69f0ae; }

/* Add form */
.form-wrap { max-width: 640px; margin: 0 auto; padding: 32px 24px; }
.form-error { color: #ff6b6b; }

.lyric-form { display: flex; flex-direction: column; gap: 8px; }
.lyric-form label { margin-top: 12px; font-size: 0.9rem; color: var(--text-dim); }
.lyric-form input,
.lyric-form textarea {
    background: var(--bg-raised);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 12px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
}
.lyric-form input:focus,
.lyric-form textarea:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
.lyric-form button { margin-top: 18px; align-self: flex-start; }

/* Lyric reading page */
.lyric-page { max-width: 640px; margin: 0 auto; padding: 28px 24px 80px; }
.lyric-title { margin-top: 0; }
.btn-play { font-size: 1.1rem; margin-bottom: 24px; }
.lyric-lines .line {
    font-size: 1.15rem;
    line-height: 1.9;
    color: var(--text);
    white-space: pre-wrap;
}

/* Fullscreen player */
.player[hidden] { display: none; }

.player {
    position: fixed;
    inset: 0;
    background: #000;
    color: var(--text);
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

.player-scroller {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 45vh 24px;
    will-change: transform;
}

.player-scroller .line {
    font-size: 1.4rem;
    line-height: 2.2;
    color: var(--text-dim);
    text-align: center;
    white-space: pre-wrap;
    transition: font-size 0.2s ease, color 0.2s ease, font-weight 0.2s ease;
}

.player-scroller .line.active {
    font-size: 2.6rem;
    font-weight: 700;
    color: var(--accent);
}

.player-controls {
    position: sticky;
    bottom: 0;
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 14px 20px;
    background: rgba(18,18,18,0.92);
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.pace-presets { display: flex; gap: 8px; }
.pace-btn {
    padding: 8px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-raised);
    color: var(--text);
    cursor: pointer;
    font-size: 0.9rem;
}
.pace-btn.active { background: var(--accent); color: #1a1200; border-color: var(--accent); font-weight: 600; }

.pace-slider-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-dim);
}

@media (max-width: 600px) {
    .topbar { padding: 16px 18px; }
    .board { padding: 18px; }
    .player-scroller .line.active { font-size: 1.9rem; }
    .player-controls { gap: 10px; }
}