/* Speaker and headphone test — template-parts/tools/speaker-test.php */

.sp-top {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px 16px;
}
.sp-vol {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1 1 260px;
    max-width: 420px;
}
.sp-vol input[type="range"] { flex: 1; accent-color: var(--color-accent); min-width: 0; }
.sp-vol__val {
    min-width: 3.2em;
    text-align: end;
    font-family: var(--cine-mono, ui-monospace, monospace);
    font-size: 13px;
    color: var(--color-text-secondary);
}

.sp-block { margin-top: 18px; }
.sp-block--first { margin-top: 0; }
.sp-top { margin-top: 14px; }
.sp-h {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 10px;
}

/* Three big channel buttons: Left · Both · Right (always left-to-right) */
.sp-lr {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}
.sp-ch {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 104px;
    padding: 14px 8px;
    border-radius: 14px;
    border: 1px solid var(--color-border);
    background: var(--color-bg-elevated);
    color: var(--color-text-secondary);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: border-color 160ms var(--ease-out, ease), transform 160ms var(--ease-out, ease), background-color 160ms var(--ease-out, ease);
}
.sp-ch svg { width: 34px; height: 34px; }
.sp-ch:not(.sp-ch--right) svg { transform: scaleX(-1); }
.sp-ch.sp-ch--both svg { transform: none; }
.sp-ch:hover { border-color: var(--color-border-strong); color: var(--color-text-primary); }
.sp-ch:active { transform: scale(.98); }
.sp-ch[aria-pressed="true"] {
    border-color: var(--color-accent);
    background: color-mix(in srgb, var(--color-accent) 12%, var(--color-bg-elevated));
    color: var(--color-text-primary);
}
.sp-ch[aria-pressed="true"] svg path:nth-child(n+2) { animation: sp-wave 0.68s ease-in-out infinite; }
@keyframes sp-wave { 50% { opacity: .25; } }

/* Sweep */
.sp-sweep {
    padding: 14px 16px 10px;
    border-radius: 12px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
}
.sp-freq {
    font-family: var(--cine-mono, ui-monospace, monospace);
    font-size: clamp(26px, 7vw, 38px);
    line-height: 1.1;
    color: var(--color-text-primary);
    font-variant-numeric: tabular-nums;
}
.sp-track {
    position: relative;
    height: 8px;
    margin-top: 12px;
    border-radius: 8px;
    background: var(--color-border);
}
.sp-track__fill {
    position: absolute;
    inset: 0 auto 0 0;
    width: 0;
    border-radius: 8px;
    background: var(--color-accent);
}
.sp-track__mark {
    position: absolute;
    top: -5px;
    width: 3px;
    height: 18px;
    margin-left: -1.5px;
    border-radius: 2px;
    background: var(--color-text-primary);
}
.sp-ticks {
    position: relative;
    height: 18px;
    margin-top: 6px;
    font-size: 11.5px;
    color: var(--color-text-muted);
}
.sp-ticks span { position: absolute; top: 0; transform: translateX(-50%); white-space: nowrap; }
/* log positions: log(f/20) / log(1000) */
.sp-ticks span:nth-child(1) { left: 0; transform: none; }
.sp-ticks span:nth-child(2) { left: 23.3%; }
.sp-ticks span:nth-child(3) { left: 56.6%; }
.sp-ticks span:nth-child(4) { left: 90%; }
.sp-ticks span:nth-child(5) { left: auto; right: 0; transform: none; }

.sp-tones .tool-btn-sm[aria-pressed="true"],
.sp [data-phase][aria-pressed="true"] {
    border-color: var(--color-accent);
    color: var(--color-text-primary);
    background: color-mix(in srgb, var(--color-accent) 12%, var(--color-bg-elevated));
}
.sp .tool-btn-sm:disabled { opacity: .5; cursor: not-allowed; }

@media (max-width: 480px) {
    .sp-ch { min-height: 76px; font-size: 14px; padding: 10px 6px; gap: 6px; }
    .sp-block--first .sp-h { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
    .sp-ch svg { width: 28px; height: 28px; }
    .sp-block { margin-top: 14px; }
}