/* ─────────────────────────────────────────────────────────────
   Sound Spectrum Analyzer — full feature set (spectrum + spectrogram)
   ───────────────────────────────────────────────────────────── */

.spectrum-hero {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    text-align: center;
}
.spectrum-hero h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.3px;
}
.spectrum-hero p {
    font-size: 14px;
    color: var(--text-secondary);
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ── STATUS LINE ── */
.sa-status {
    font-size: 12px;
    color: var(--text-tertiary);
    text-align: center;
    padding: 6px 12px;
    margin-bottom: 10px;
}
.sa-status.ok  { color: var(--green); }
.sa-status.warn { color: var(--orange); }
.sa-status.error { color: var(--red); }

/* ── FREQ HERO ── */
.sa-freq-hero {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px 18px;
    display: flex;
    gap: 20px;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 12px;
}
.sa-freq-box {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 110px;
}
.sa-freq-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-tertiary);
}
.sa-freq-value {
    font-family: var(--mono);
    font-size: 24px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.5px;
}
.sa-note-value { color: var(--accent); }
.sa-cents-value { font-size: 13px; color: var(--text-secondary); }

/* ── ANALYZER WRAP ── */
.analyzer-wrap {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    box-shadow: var(--shadow);
}

/* ── VIZ TABS ── */
.viz-tabs {
    display: inline-flex;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    overflow: hidden;
    margin-bottom: 10px;
}
.viz-tab {
    border: none;
    background: none;
    padding: 8px 18px;
    font-family: var(--font);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}
.viz-tab:hover { background: var(--bg-input); color: var(--text); }
.viz-tab.active {
    background: var(--accent);
    color: #fff;
}

/* ── TOOLBAR ── */
.sa-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    flex-wrap: wrap;
    justify-content: space-between;
}
.sa-toolbar-left  { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.sa-toolbar-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tool-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    color: var(--text);
    cursor: pointer;
    transition: all var(--transition);
}
.tool-btn:hover { background: var(--bg-input); border-color: var(--border-strong); }
.tool-btn svg   { width: 14px; height: 14px; }
.tool-btn.is-on { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ── CANVAS AREA ── */
.canvas-wrap {
    position: relative;
    height: 340px;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border);
}
.canvas-wrap canvas {
    position: absolute;
    inset: 0;
    width: 100% !important;
    height: 100% !important;
    display: block;
}
.canvas-wrap .sa-canvas-hidden { display: none; }
.cursor-line {
    position: absolute;
    top: 0; bottom: 0;
    width: 1px;
    background: rgba(255,255,255,0.4);
    pointer-events: none;
    display: none;
}
.sa-tooltip {
    position: absolute;
    top: 8px;
    padding: 5px 9px;
    font-family: var(--mono);
    font-size: 11px;
    color: #fff;
    background: rgba(20,20,20,0.78);
    border-radius: 5px;
    pointer-events: none;
    white-space: nowrap;
    display: none;
    z-index: 3;
}
.freeze-label {
    position: absolute;
    top: 8px;
    left: 10px;
    background: rgba(201,100,66,0.92);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 3px 8px;
    border-radius: 20px;
    z-index: 2;
    display: none;
}
.freeze-label.visible { display: inline-block; }

/* ── PRIMARY SOURCE CONTROLS ── */
.sa-controls {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    flex-wrap: wrap;
}
.sa-controls .btn {
    flex: 1 1 180px;
    font-family: var(--font);
    font-size: 14px;
    font-weight: 600;
    padding: 12px 18px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text);
    cursor: pointer;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}
.sa-controls .btn:hover { background: var(--bg-input); }
.sa-controls .btn-start   { background: var(--accent); color: #fff; border-color: var(--accent); }
.sa-controls .btn-start:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.sa-controls .btn-upload  { background: var(--blue); color: #fff; border-color: var(--blue); }
.sa-controls .btn-upload:hover { filter: brightness(1.05); }
.sa-controls .btn-stop    { background: var(--red); color: #fff; border-color: var(--red); }
.sa-controls .btn-stop:hover { background: var(--red-dark); border-color: var(--red-dark); }

/* ── SETTINGS PANEL (side) ── */
.sa-panels {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-top: 14px;
}
.sa-panel { display: flex; flex-direction: column; gap: 4px; }
.panel-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-tertiary);
    display: flex;
    justify-content: space-between;
}
.panel-label-val { color: var(--text-secondary); font-family: var(--mono); }

/* ── STATS ROW ── */
.sa-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 8px;
    margin-top: 14px;
}
.sa-stat {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    text-align: center;
}
.sa-stat-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}
.sa-stat-value {
    font-family: var(--mono);
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
}
.sa-stat-value.clip { color: var(--green); }
.sa-stat-value.clip.on { color: var(--red); }

/* ── BANDS ── */
.sa-bands {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px;
    margin-top: 12px;
}
.sa-bands h3 {
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-tertiary);
}
.sa-band-row {
    display: grid;
    grid-template-columns: 140px 1fr 70px;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}
.sa-band-row:last-child { margin-bottom: 0; }
.sa-band-name {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}
.sa-band-meter {
    height: 10px;
    background: var(--bg-input);
    border-radius: 5px;
    overflow: hidden;
}
.sa-band-fill {
    height: 100%;
    width: 0%;
    transition: width 0.12s linear;
    border-radius: 5px;
}
.sa-band-low .sa-band-fill  { background: linear-gradient(90deg, #3d8b5e, #6b8e3d); }
.sa-band-mid .sa-band-fill  { background: linear-gradient(90deg, #c49530, #cf7c3a); }
.sa-band-high .sa-band-fill { background: linear-gradient(90deg, #4a7ec7, #8b6cc7); }
.sa-band-val {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text);
    text-align: right;
}

/* ── TRACKS & SELECTS ── */
.analyzer-range {
    width: 100%;
    -webkit-appearance: none;
    height: 4px;
    border-radius: 2px;
    background: var(--bg-input);
    outline: none;
}
.analyzer-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px; height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: 2px solid var(--bg-card);
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}
.analyzer-range::-moz-range-thumb {
    width: 16px; height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: 2px solid var(--bg-card);
}

.sa-hidden { display: none !important; }

/* ── RESPONSIVE ── */
@media (max-width: 600px) {
    .canvas-wrap { height: 280px; }
    .sa-freq-value { font-size: 20px; }
    .sa-band-row { grid-template-columns: 100px 1fr 60px; }
    .sa-controls .btn { font-size: 13px; padding: 10px 14px; }
    .sa-stats { grid-template-columns: repeat(2, 1fr); }
}