/* ==========================================================================
   Audio Lab — scoped page styles, built on global-tokens.css + portal-quality.css.
   No inline styles, no second token system: only Portal --md-sys-color-*/--spacing-*
   tokens plus a small set of module-local variables scoped to .audio-lab-page.
   ========================================================================== */

.audio-lab-page {
    --al-canvas-bg: #0f172a;
    --al-canvas-fg: #38bdf8;
    --al-canvas-grid: #1e293b;
    --al-canvas-threshold: #ef4444;
    --al-canvas-peak: #f59e0b;
}

.app-layout {
    display: flex;
    min-height: 100vh;
    background-color: var(--md-sys-color-background);
    font-family: var(--font-family-base);
    color: var(--md-sys-color-text-main);
}

.main-content {
    flex-grow: 1;
    padding: var(--spacing-5);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    max-width: 1100px;
    margin: 0 auto;
    width: 100%;
}

.top-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    border-bottom: var(--border-thin);
    padding-bottom: var(--spacing-3);
}

.page-title { font-size: 1.75rem; font-weight: 700; }
.page-subtitle { color: var(--md-sys-color-text-muted); font-size: 0.95rem; margin-top: 4px; }

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    flex-wrap: wrap;
}

/* Buttons (component-local, matching the Portal's established per-page button convention) */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    min-height: 44px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    font-family: inherit;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: var(--transition-standard);
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background-color: var(--md-sys-color-primary); color: #fff; }
.btn-secondary { background-color: var(--md-sys-color-surface); color: var(--md-sys-color-primary); border: var(--border-thin); }
.btn[aria-pressed="true"] { outline: 2px solid var(--md-sys-color-primary); outline-offset: 2px; }

/* Section shell */
.al-notice,
.al-section {
    background-color: var(--md-sys-color-surface);
    border: var(--border-thin);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    box-shadow: var(--elevation-1);
}

.al-notice p { color: var(--md-sys-color-text-muted-on-light); line-height: 1.5; }

.al-section h2 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-3);
}

.al-privacy-notice {
    background-color: var(--md-sys-color-primary-container);
    border-radius: var(--radius-sm);
    padding: var(--spacing-3);
    margin-bottom: var(--spacing-3);
    line-height: 1.5;
}

/* Fieldsets / grouped controls */
.al-fieldset {
    border: var(--border-thin);
    border-radius: var(--radius-md);
    padding: var(--spacing-3);
    margin-bottom: var(--spacing-3);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.al-fieldset legend {
    font-weight: 600;
    padding: 0 var(--spacing-1);
    color: var(--md-sys-color-text-muted-on-light);
}

.al-radio-label,
.al-checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    min-height: 44px;
}

.al-controls-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
}

@media (min-width: 640px) {
    .al-controls-grid { grid-template-columns: repeat(2, 1fr); }
}

.al-control {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.al-control label { font-weight: 600; font-size: 0.875rem; }

.al-control input[type="number"],
.al-control input[type="range"],
.al-control select,
.al-control input[type="file"] {
    min-height: 44px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    border: var(--border-thin);
    background-color: var(--md-sys-color-background);
    color: var(--md-sys-color-text-main);
    font: inherit;
}

.al-control output {
    font-family: var(--font-family-mono);
    color: var(--md-sys-color-primary);
    font-weight: 700;
}

.al-actions {
    display: flex;
    gap: var(--spacing-2);
    flex-wrap: wrap;
    align-items: center;
}

.al-status-text {
    color: var(--md-sys-color-text-muted-on-light);
    font-family: var(--font-family-mono);
    margin-top: var(--spacing-2);
}

.al-error {
    color: var(--md-sys-color-error-on-light);
    background-color: var(--md-sys-color-warning-container);
    border-radius: var(--radius-sm);
    padding: var(--spacing-2) var(--spacing-3);
    margin-top: var(--spacing-2);
}

.al-source-panel {
    margin-top: var(--spacing-3);
    padding-top: var(--spacing-3);
    border-top: var(--border-thin);
}

.al-mic-indicator {
    margin-top: var(--spacing-2);
    color: var(--color-active);
    font-weight: 600;
}

/* Canvas figures */
.al-canvas-figure {
    margin: var(--spacing-3) 0;
}

.al-canvas-figure figcaption {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--md-sys-color-text-muted-on-light);
    margin-bottom: 6px;
}

.al-canvas-figure canvas {
    display: block;
    width: 100%;
    height: 180px;
    background-color: var(--al-canvas-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--al-canvas-grid);
}

#waterfall-canvas { height: 260px; }

/* Alarm table */
.al-table-wrapper {
    overflow-x: auto;
    margin-top: var(--spacing-3);
}

#alarm-log-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

#alarm-log-table caption {
    text-align: left;
    color: var(--md-sys-color-text-muted-on-light);
    margin-bottom: var(--spacing-2);
    font-size: 0.8rem;
}

#alarm-log-table th,
#alarm-log-table td {
    text-align: left;
    padding: 8px 10px;
    border-bottom: var(--border-thin);
}

#alarm-log-table th {
    background-color: var(--md-sys-color-surface-variant);
    font-weight: 700;
}

.al-alarm-row-exceeded td:nth-child(3) { color: var(--md-sys-color-error-on-light); font-weight: 700; }

/* Footer */
.al-footer {
    text-align: center;
    padding: var(--spacing-3) 0;
}

.al-provenance {
    color: var(--md-sys-color-text-muted);
    font-size: 0.8rem;
}

/* Decorative pulse for an active alarm status badge only; portal-quality.css already
   neutralizes animation-duration under prefers-reduced-motion, and the same information is
   always additionally conveyed as plain status text. */
.al-status-text.al-alarm-active {
    color: var(--md-sys-color-error-on-light);
    font-weight: 700;
    animation: al-alarm-pulse 1.4s ease-in-out infinite;
}

@keyframes al-alarm-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.55; }
}

@media (max-width: 480px) {
    .main-content { padding: var(--spacing-3); }
    .al-controls-grid { grid-template-columns: 1fr; }
    .top-header { flex-direction: column; }
}