/* =============================================================================
   AFINADOR
   Sigue el sistema de diseño: solo tokens semánticos, superficies glass,
   radios de la escala --glass-radius-*. Sin hex sueltos.
   ============================================================================= */

.tuner-page {
    max-width: 1100px;
    margin: 0 auto;
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

/* ---------- Cabecera ---------- */
.tuner-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    flex-wrap: wrap;
}
.tuner-head-titles h1 {
    margin: 0;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}
.tuner-head-titles p {
    margin: 2px 0 0;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.tuner-power {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 44px;
    padding: 0 var(--space-4);
    background: var(--color-primary);
    border: none;
    border-radius: var(--glass-radius-pill);
    color: #fff;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: background var(--transition-base), transform var(--transition-fast);
}
.tuner-power.is-on {
    background: var(--color-danger);
}
@media (hover: hover) {
    .tuner-power:hover { transform: translateY(-1px); }
}

/* ---------- Distribución ---------- */
.tuner-main {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: var(--space-4);
    align-items: start;
}

.tuner-readout,
.tuner-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--glass-radius-lg);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    box-shadow: var(--glass-highlight-soft);
    padding: var(--space-4);
}

/* El borde se tiñe de verde cuando la cuerda queda afinada: el músico lo ve
   de reojo desde lejos, sin tener que leer los números. */
.tuner-readout {
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.tuner-readout.is-in-tune {
    border-color: color-mix(in srgb, var(--color-success) 60%, transparent);
    box-shadow: var(--glass-highlight-soft), 0 0 0 3px color-mix(in srgb, var(--color-success) 18%, transparent);
}

/* ---------- Dial ---------- */
.tuner-dial-wrap {
    position: relative;
    width: 100%;
}
.tuner-dial {
    display: block;
    width: 100%;
    height: auto;
}

/* Nota y octava, centradas dentro del arco. */
.tuner-note-block {
    position: absolute;
    left: 50%;
    bottom: 6%;
    transform: translateX(-50%);
    display: flex;
    align-items: baseline;
    gap: 2px;
    pointer-events: none;
}
.tuner-note {
    font-size: clamp(3rem, 11vw, 5.25rem);
    font-weight: var(--font-weight-bold);
    line-height: 0.95;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}
.tuner-octave {
    font-size: clamp(1rem, 3.2vw, 1.6rem);
    font-weight: var(--font-weight-semibold);
    color: var(--text-muted);
}

.tuner-cents {
    position: absolute;
    left: 50%;
    bottom: -6px;
    transform: translateX(-50%);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    font-variant-numeric: tabular-nums;
    color: var(--text-muted);
    pointer-events: none;
}
.tuner-cents.is-ok { color: var(--color-success); }
.tuner-cents.is-near { color: var(--color-warning); }
.tuner-cents.is-off { color: var(--color-danger); }

/* ---------- Datos ---------- */
.tuner-meta {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-2);
    margin-top: var(--space-4);
    padding-top: var(--space-3);
    border-top: 1px solid var(--border-color);
}
.tuner-meta-item {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}
.tuner-meta-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.tuner-meta-value {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.tuner-level {
    display: flex;
    align-items: center;
    gap: 8px;
}
.tuner-level-bar {
    flex: 1 1 auto;
    min-width: 32px;
    height: 6px;
    border-radius: var(--glass-radius-pill);
    background: var(--surface-2);
    overflow: hidden;
}
.tuner-level-bar > span {
    display: block;
    height: 100%;
    width: 0;
    background: var(--color-primary);
    border-radius: inherit;
    transition: width 0.08s linear;
}
.tuner-clarity {
    flex: 0 0 auto;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.tuner-hint {
    margin: var(--space-3) 0 0;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-align: center;
}

/* ---------- Panel de instrumento ---------- */
.tuner-panel-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}
.tuner-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.tuner-field-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.tuner-select {
    width: 100%;
    height: 40px;
    padding: 0 var(--space-3);
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--glass-radius-sm);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    outline: none;
}
.tuner-select:focus { border-color: var(--color-primary); }

.tuner-a4 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    height: 40px;
    padding: 0 6px;
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--glass-radius-sm);
}
.tuner-a4-btn {
    width: 30px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--glass-radius-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    cursor: pointer;
}
@media (hover: hover) {
    .tuner-a4-btn:hover { background: var(--bg-card-hover); color: var(--text-primary); }
}
.tuner-a4-value {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

/* ---------- Cuerdas ---------- */
.tuner-strings {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-2);
}
.tuner-string {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--space-3) var(--space-2);
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--glass-radius-sm);
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}
@media (hover: hover) {
    .tuner-string:hover { background: var(--bg-card-hover); }
}
.tuner-string:active { transform: scale(0.98); }

/* Cuerda que se está midiendo */
.tuner-string.is-active {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}
/* Cuerda ya afinada */
.tuner-string.is-tuned {
    border-color: color-mix(in srgb, var(--color-success) 65%, transparent);
    background: color-mix(in srgb, var(--color-success) 16%, transparent);
}
.tuner-string-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    line-height: 1.1;
}
.tuner-string-freq {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}
.tuner-string-dot {
    position: absolute;
    top: 7px;
    right: 7px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: transparent;
    transition: background var(--transition-fast);
}
.tuner-string.is-active .tuner-string-dot { background: var(--color-primary); }
.tuner-string.is-tuned .tuner-string-dot { background: var(--color-success); }

.tuner-strings-empty {
    grid-column: 1 / -1;
    padding: var(--space-4);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    background: var(--surface-2);
    border-radius: var(--glass-radius-sm);
}

.tuner-panel-note {
    margin: var(--space-3) 0 0;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-align: center;
}

/* ---------- Teléfono ----------
   Una sola columna, dial arriba y cuerdas grandes: afinar se hace con el
   teléfono apoyado y mirando de lejos, así que nada de controles chicos. */
@media (max-width: 900px) {
    .tuner-main {
        grid-template-columns: minmax(0, 1fr);
    }
    .tuner-panel-row {
        flex-direction: row;
        align-items: flex-end;
    }
    .tuner-field { flex: 1 1 auto; min-width: 0; }
    .tuner-field-a4 { flex: 0 0 auto; }
}

@media (max-width: 560px) {
    .tuner-page { padding: var(--space-3); }
    .tuner-head { flex-wrap: nowrap; }
    .tuner-head-titles h1 { font-size: var(--font-size-xl); }
    .tuner-head-titles p { display: none; }
    .tuner-readout, .tuner-panel { padding: var(--space-3); }
    .tuner-strings { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .tuner-meta { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
    .tuner-meta-value { font-size: var(--font-size-xs); }
    .tuner-panel-row { flex-direction: column; align-items: stretch; }
}

/* ---------- Entrada de audio y diagnóstico ---------- */
.tuner-input-block {
    margin-top: var(--space-3);
    padding-top: var(--space-3);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}
.tuner-diag {
    display: flex;
    flex-direction: column;
    gap: 3px;
    padding: var(--space-2);
    background: var(--surface-2);
    border-radius: var(--glass-radius-sm);
    font-size: var(--font-size-xs);
}
.tuner-diag:empty { display: none; }
.tuner-diag-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--space-2);
}
.tuner-diag-row > span { color: var(--text-muted); flex: 0 0 auto; }
.tuner-diag-row > b {
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
    font-variant-numeric: tabular-nums;
    text-align: right;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}