/* ═══════════════════════════════════════════
   Custom Tuning Generator — tool.css
   ═══════════════════════════════════════════ */

/* Tuning Controls Row */
.tuning-controls {
    display: flex;
    gap: var(--space-sm);
    align-items: flex-end;
    flex-wrap: wrap;
    margin-bottom: var(--space-sm);
}

.tuning-controls .control-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 140px;
}

/* String Editor */
.string-editor {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.string-row {
    display: grid;
    grid-template-columns: 36px 1fr 130px 100px 80px 44px;
    gap: var(--space-xs);
    align-items: center;
    padding: 8px 12px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color 0.2s ease;
}

.string-row:hover {
    border-color: var(--color-primary);
}

.string-row.is-playing {
    border-color: var(--color-primary);
    box-shadow: 0 0 12px rgba(0, 255, 65, 0.15);
}

.string-label {
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    font-weight: 700;
    color: var(--color-primary);
    text-align: center;
    white-space: nowrap;
}

.string-visual {
    display: flex;
    align-items: center;
    height: 24px;
    position: relative;
}

.string-line {
    width: 100%;
    border-radius: 4px;
    background: linear-gradient(90deg, rgba(0,255,65,0.3), rgba(0,255,65,0.6), rgba(0,255,65,0.3));
    transition: height 0.2s ease;
}

.string-note-select {
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    padding: 4px 6px;
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.string-note-select:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 255, 65, 0.2);
}

.string-hz-input {
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    padding: 4px 6px;
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    text-align: right;
    width: 100%;
}

.string-hz-input:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 255, 65, 0.2);
}

.string-cents {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    text-align: center;
    white-space: nowrap;
}

.string-cents.is-sharp {
    color: var(--color-warning, #ffb300);
}

.string-cents.is-flat {
    color: var(--color-error, #ff5252);
}

.string-cents.is-standard {
    color: var(--color-primary);
}

.string-play-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-primary);
    cursor: pointer;
    font-size: 16px;
    transition: all 0.15s ease;
    padding: 0;
}

.string-play-btn:hover {
    background: rgba(0, 255, 65, 0.1);
    border-color: var(--color-primary);
}

.string-play-btn.is-playing {
    background: var(--color-primary);
    color: var(--color-bg);
}

/* Tuning Actions */
.tuning-actions {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
    margin-top: var(--space-sm);
}

/* Comparison Panel */
.comparison-panel {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--space-xs);
}

.comparison-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 10px 8px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-align: center;
}

.comparison-item__string {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
}

.comparison-item__note {
    font-family: var(--font-mono);
    font-size: var(--fs-md);
    font-weight: 700;
    color: var(--color-text);
}

.comparison-item__cents {
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    font-weight: 600;
}

.comparison-item__cents.is-up {
    color: var(--color-warning, #ffb300);
}

.comparison-item__cents.is-down {
    color: var(--color-error, #ff5252);
}

.comparison-item__cents.is-same {
    color: var(--color-primary);
}

/* Fretboard */
.fretboard-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: var(--space-xs) 0;
}

#fretboard-canvas {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

/* Save / Load */
.save-load-panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.save-row {
    display: flex;
    gap: var(--space-xs);
}

.save-row .input {
    flex: 1;
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    padding: 8px 12px;
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.save-row .input:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 255, 65, 0.2);
}

.saved-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-height: 240px;
    overflow-y: auto;
}

.saved-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 8px 12px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: border-color 0.15s ease;
}

.saved-item:hover {
    border-color: var(--color-primary);
}

.saved-item__name {
    flex: 1;
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.saved-item__notes {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
}

.saved-item__btn {
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 4px 8px;
    font-size: var(--fs-xs);
    font-family: var(--font-mono);
    transition: all 0.15s ease;
}

.saved-item__btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.saved-item__btn--delete:hover {
    border-color: var(--color-error, #ff5252);
    color: var(--color-error, #ff5252);
}

.saved-list__empty {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    text-align: center;
    padding: var(--space-sm);
}

/* Toast notification */
.ctg-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-surface);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: 10px 24px;
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    z-index: 9999;
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    pointer-events: none;
}

.ctg-toast.is-visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width: 768px) {
    .string-row {
        grid-template-columns: 30px 1fr 100px 80px 60px 38px;
        gap: 4px;
        padding: 6px 8px;
    }

    .tuning-controls {
        flex-direction: column;
    }

    .tuning-controls .control-group {
        width: 100%;
    }

    .comparison-panel {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    }
}

@media (max-width: 520px) {
    .string-row {
        grid-template-columns: 26px 0fr 90px 70px 50px 34px;
        gap: 3px;
        padding: 5px 6px;
    }

    .string-visual {
        display: none;
    }

    .string-row {
        grid-template-columns: 26px 90px 70px 50px 34px;
    }

    .string-label {
        font-size: var(--fs-xs);
    }

    .string-note-select,
    .string-hz-input {
        font-size: var(--fs-xs);
        padding: 3px 4px;
    }

    .string-cents {
        font-size: 10px;
    }

    .string-play-btn {
        width: 30px;
        height: 30px;
        font-size: 13px;
    }

    .tuning-actions {
        flex-direction: column;
    }

    .tuning-actions .btn {
        width: 100%;
    }

    .saved-item__notes {
        display: none;
    }
}