/* ============================================================
   Harmonic Overtone Detector — Tool Styles
   ============================================================ */

/* ── Fundamental Frequency Display ── */
.fundamental-display {
    text-align: center;
    padding: var(--space-md) 0 var(--space-sm);
}

.fundamental-display__label {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}

.fundamental-display__hz {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 8vw, 4.5rem);
    color: var(--color-primary);
    text-shadow: 0 0 28px rgba(0, 255, 65, 0.5);
    line-height: 1;
    letter-spacing: 0.03em;
    transition: color 0.15s ease, text-shadow 0.15s ease;
}

.fundamental-display__hz--active {
    text-shadow: 0 0 40px rgba(0, 255, 65, 0.8), 0 0 80px rgba(0, 255, 65, 0.25);
}

.fundamental-display__note {
    font-family: var(--font-mono);
    font-size: var(--fs-md);
    color: var(--color-secondary);
    margin-top: 4px;
    letter-spacing: 0.08em;
}

/* ── THD Display ── */
.thd-display {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.thd-display__title {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 6px;
}

.thd-display__row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.thd-display__track {
    flex: 1;
    height: 10px;
    background: var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.thd-display__fill {
    height: 100%;
    width: 0%;
    border-radius: var(--radius-full);
    transition: width 0.15s ease, background 0.15s ease;
    background: linear-gradient(90deg, #00e676 0%, #ffb300 50%, #ff1744 100%);
}

.thd-display__pct {
    font-family: var(--font-mono);
    font-size: var(--fs-md);
    color: var(--color-primary);
    font-weight: 700;
    min-width: 60px;
    text-align: right;
}

.thd-display__db {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    margin-top: 4px;
    text-align: right;
}

/* ── Timbre Match Card ── */
.timbre-card {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    transition: border-color 0.2s ease;
}

.timbre-card--matched {
    border-color: var(--color-primary);
    box-shadow: 0 0 12px rgba(0, 255, 65, 0.15);
}

.timbre-card__icon {
    font-size: 2rem;
    min-width: 48px;
    text-align: center;
    line-height: 1;
}

.timbre-card__info {
    flex: 1;
    min-width: 0;
}

.timbre-card__name {
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 2px;
}

.timbre-card__confidence {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-primary);
    margin-bottom: 2px;
}

.timbre-card__desc {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--color-text-muted);
    line-height: 1.4;
}

/* ── Odd/Even Harmonic Summary ── */
.odd-even-summary {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.odd-even-bar {
    display: flex;
    height: 12px;
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 6px;
}

.odd-even-bar__odd {
    height: 100%;
    background: linear-gradient(90deg, #00b8d4, #00e5ff);
    transition: width 0.2s ease;
}

.odd-even-bar__even {
    height: 100%;
    background: linear-gradient(90deg, #00c853, #00e676);
    transition: width 0.2s ease;
}

.odd-even-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4px;
}

.odd-even-label {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    font-weight: 700;
}

.odd-even-label--odd  { color: #00e5ff; }
.odd-even-label--even { color: #00e676; }

.odd-even-hint {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--color-text-muted);
    font-style: italic;
}

/* ── Harmonic Bar Chart ── */
.harmonic-chart {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: var(--space-sm);
}

.harmonic-bar-row {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    padding: 3px 6px;
    border-radius: var(--radius-sm);
    transition: background 0.1s ease;
    position: relative;
}

.harmonic-bar-row:hover {
    background: rgba(255, 255, 255, 0.04);
}

.harmonic-bar-row:active {
    background: rgba(255, 255, 255, 0.08);
}

.harmonic-bar-row--playing {
    background: rgba(0, 255, 65, 0.08) !important;
    box-shadow: inset 0 0 0 1px rgba(0, 255, 65, 0.3);
}

.harmonic-bar__label {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--color-text-muted);
    min-width: 24px;
    text-align: right;
    font-weight: 700;
}

.harmonic-bar__label--fund {
    color: var(--color-warning);
}

.harmonic-bar__track {
    flex: 1;
    height: 14px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
}

.harmonic-bar__fill {
    height: 100%;
    width: 0%;
    border-radius: var(--radius-sm);
    transition: width 0.12s ease;
    min-width: 0;
}

/* Fundamental (H1) — amber/gold */
.harmonic-bar__fill--fund {
    background: linear-gradient(90deg, #ff8f00, #ffb300);
}

/* Odd harmonics — cyan */
.harmonic-bar__fill--odd {
    background: linear-gradient(90deg, #00b8d4, #00e5ff);
}

/* Even harmonics — green */
.harmonic-bar__fill--even {
    background: linear-gradient(90deg, #00c853, #00e676);
}

.harmonic-bar__db {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--color-text-muted);
    min-width: 48px;
    text-align: right;
    transition: color 0.15s;
}

.harmonic-bar__hz {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--color-text-muted);
    min-width: 52px;
    text-align: right;
}

.harmonic-bar-row:hover .harmonic-bar__db {
    color: var(--color-text);
}

/* Chart legend */
.harmonic-chart__legend {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: 4px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--color-text-muted);
}

.legend-swatch {
    display: inline-block;
    width: 12px;
    height: 8px;
    border-radius: 2px;
}

.legend-swatch--fund { background: linear-gradient(90deg, #ff8f00, #ffb300); }
.legend-swatch--odd  { background: linear-gradient(90deg, #00b8d4, #00e5ff); }
.legend-swatch--even { background: linear-gradient(90deg, #00c853, #00e676); }

.harmonic-chart__hint {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--color-text-muted);
    font-style: italic;
    margin-bottom: var(--space-sm);
}

/* ── Harmonic-to-Fundamental Ratio Table ── */
.ratio-table-wrap {
    max-height: 280px;
    overflow-y: auto;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.ratio-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
}

.ratio-table th {
    position: sticky;
    top: 0;
    background: var(--color-surface);
    color: var(--color-text-muted);
    font-weight: 600;
    padding: 4px 8px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.ratio-table td {
    padding: 3px 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    color: var(--color-text);
}

.ratio-table tr:last-child td { border-bottom: none; }
.ratio-table tr:nth-child(even) td { background: rgba(255, 255, 255, 0.02); }

.ratio-table .type-odd  { color: #00e5ff; font-weight: 700; }
.ratio-table .type-even { color: #00e676; font-weight: 700; }
.ratio-table .type-fund { color: #ffb300; font-weight: 700; }

/* ── FFT Spectrum Canvas ── */
.spectrum-wrap {
    position: relative;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-sm);
}

#spectrum-canvas {
    display: block;
    width: 100%;
    height: 160px;
}

/* ── Upload Row ── */
.upload-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

/* ── Privacy Callout (shared pattern) ── */
.privacy-callout {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(0, 255, 65, 0.04);
    border: 1px solid rgba(0, 255, 65, 0.2);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
}

.privacy-callout__icon { font-size: 1rem; }

.browser-badges {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-left: auto;
}

.browser-badge {
    padding: 2px 8px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 10px;
    color: var(--color-text-muted);
}

/* ── Keyboard hints row ── */
.kbd-hints {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.kbd-hint {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
}

.kbd-hint kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--color-text);
}

/* ── Session Stats ── */
.dom-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    margin-top: var(--space-sm);
}

/* ── Scrollbar ── */
.ratio-table-wrap::-webkit-scrollbar { width: 4px; }
.ratio-table-wrap::-webkit-scrollbar-track { background: transparent; }
.ratio-table-wrap::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 2px; }

/* ── Freeze Badge ── */
.freeze-badge {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-warning, #ffaa00);
    background: rgba(255, 170, 0, 0.1);
    border: 1px solid rgba(255, 170, 0, 0.3);
    border-radius: var(--radius-sm);
    padding: 2px 8px;
    animation: pulse-badge 1s ease infinite alternate;
}

@keyframes pulse-badge {
    from { opacity: 0.7; }
    to { opacity: 1; }
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .tool-grid { grid-template-columns: 1fr !important; }
}

@media (max-width: 640px) {
    .fundamental-display__hz { font-size: clamp(2.2rem, 10vw, 3.5rem); }
    .dom-stats { grid-template-columns: repeat(2, 1fr); }
    #spectrum-canvas { height: 120px; }
    .harmonic-bar__hz { display: none; }
    .harmonic-chart__legend { gap: var(--space-sm); }
}