/* ══════════════════════════════════════════════════════════════
   Beat Creator — Step Sequencer Styles
   ══════════════════════════════════════════════════════════════ */

.beat-workspace {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* ── Controls Bar ── */
.beat-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.beat-controls .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.beat-bpm {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.beat-bpm input[type="number"] {
    width: 4rem;
    padding: 0.3rem 0.4rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.85rem;
    text-align: center;
    font-family: var(--font-mono);
}

.beat-swing {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.beat-swing input[type="range"] {
    width: 80px;
    accent-color: var(--accent);
}

.beat-swing .swing-value {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    min-width: 2.2rem;
    text-align: right;
}

.beat-kit-select {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.beat-kit-select select {
    padding: 0.3rem 0.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.85rem;
}

.beat-controls-spacer {
    flex: 1;
}

/* ── Grid Container ── */
.beat-grid-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
}

.beat-grid {
    display: grid;
    min-width: 700px;
    padding: 0.5rem;
}

/* Step number header */
.beat-step-numbers {
    display: contents;
}

.beat-step-num {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    color: var(--text-dim);
    text-align: center;
    padding: 0.25rem 0;
    user-select: none;
}

.beat-step-num.beat-marker {
    color: var(--text-secondary);
    font-weight: 600;
}

/* Track rows */
.beat-track-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
    border-radius: 6px;
    transition: background 0.15s;
}

.beat-track-label:hover {
    background: rgba(255, 255, 255, 0.04);
}

.beat-track-label .track-color-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.beat-track-label .track-key {
    font-size: 0.6rem;
    font-family: var(--font-mono);
    background: rgba(255, 255, 255, 0.08);
    padding: 0.1rem 0.3rem;
    border-radius: 3px;
    color: var(--text-dim);
    margin-left: auto;
}

.beat-track-label .track-mute {
    font-size: 0.6rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid transparent;
    color: var(--text-dim);
    padding: 0.15rem 0.35rem;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.15s;
}

.beat-track-label .track-mute:hover {
    border-color: var(--border-hover);
}

.beat-track-label .track-mute.muted {
    background: rgba(231, 76, 60, 0.2);
    color: #e74c3c;
    border-color: rgba(231, 76, 60, 0.3);
}

/* Grid cells */
.beat-cell {
    width: 100%;
    aspect-ratio: 1;
    min-height: 28px;
    max-height: 40px;
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.1s;
    background: var(--bg);
    position: relative;
}

.beat-cell:hover {
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.04);
}

.beat-cell.active {
    border-color: transparent;
}

.beat-cell.step-playing {
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.15);
    transform: scale(1.08);
}

/* Beat group separators — every 4th step gets extra left margin */
.beat-cell.beat-group-start {
    margin-left: 3px;
}

/* Playhead indicator */
.beat-cell.step-current {
    box-shadow: inset 0 -2px 0 rgba(255, 255, 255, 0.4);
}

/* Active + playing */
.beat-cell.active.step-playing {
    transform: scale(1.12);
    filter: brightness(1.3);
}

/* ── Presets Section ── */
.beat-presets {
    padding: 1rem 1.25rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.beat-presets h3 {
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.beat-presets h3 .hint {
    font-weight: 400;
    font-size: 0.75rem;
    color: var(--text-dim);
}

/* Genre filter tabs */
.beat-genre-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-bottom: 0.75rem;
}

.beat-genre-btn {
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}

.beat-genre-btn:hover {
    border-color: var(--border-hover);
    color: var(--text);
}

.beat-genre-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.beat-preset-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.beat-preset-btn {
    display: flex;
    flex-direction: column;
    padding: 0.5rem 0.85rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s;
    text-align: left;
}

.beat-preset-btn:hover {
    border-color: var(--accent);
    background: rgba(99, 102, 241, 0.08);
}

.beat-preset-btn .preset-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text);
}

.beat-preset-btn .preset-genre {
    font-size: 0.7rem;
    color: var(--text-dim);
    margin-top: 0.15rem;
}

.beat-preset-btn .preset-bpm {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    color: var(--text-dim);
    margin-top: 0.2rem;
}

/* ── Step Progress Bar ── */
.beat-progress {
    height: 3px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
    margin-top: -0.5rem;
}

.beat-progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    transition: width 0.05s linear;
    width: 0%;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .beat-controls {
        gap: 0.5rem;
        padding: 0.75rem;
    }

    .beat-cell {
        min-height: 22px;
    }

    .beat-track-label {
        font-size: 0.7rem;
        padding: 0.2rem 0.4rem;
    }

    .beat-track-label .track-key {
        display: none;
    }
}