/* ============================================
   Configuration Modal
   ============================================ */

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
    z-index: 100;
    align-items: center;
    justify-content: center;
    animation: overlayFadeIn var(--duration-normal) var(--ease-out);
}

.modal-overlay.active {
    display: flex;
}

@keyframes overlayFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-modal);
    width: 100%;
    max-width: 480px;
    padding: var(--space-6);
    animation: modalSlideIn var(--duration-slow) var(--ease-out);
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.97);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 18px;
    transition: all var(--duration-fast) var(--ease-out);
}

.modal-close:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-1);
}

.modal-subtitle {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-5);
}

/* Form sections */
.config-section {
    margin-bottom: var(--space-5);
}

.config-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
    display: block;
}

.config-section select {
    width: 100%;
    padding: var(--space-3);
}

/* Hand selection */
.hand-toggles {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

/* Session mode selector */
.mode-selector {
    display: flex;
    gap: var(--space-2);
}

.mode-option {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-3);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
}

.mode-option:hover {
    border-color: var(--border-default);
    color: var(--text-primary);
}

.mode-option.active {
    border-color: var(--accent);
    color: var(--text-accent);
    background: var(--accent-dim);
}

.mode-option .mode-icon {
    font-size: 24px;
}

/* BPM control */
.bpm-control {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.bpm-control input[type="range"] {
    flex: 1;
    appearance: none;
    height: 4px;
    background: var(--bg-elevated);
    border-radius: 2px;
    outline: none;
    border: none;
    padding: 0;
}

.bpm-slider-container {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
}

.bpm-slider-container input[type="range"] {
    width: 100%;
}

.bpm-marker {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 4px;
    height: 12px;
    background: var(--accent);
    border-radius: 2px;
    pointer-events: none;
    z-index: 1;
    opacity: 0.8;
}

.bpm-control input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
    transition: box-shadow var(--duration-fast);
}

.bpm-control input[type="range"]::-webkit-slider-thumb:hover {
    box-shadow: 0 0 8px var(--accent-glow);
}

.bpm-value {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-accent);
    min-width: 60px;
    text-align: center;
}

/* Begin session button */
.modal .btn-begin {
    width: 100%;
    margin-top: var(--space-4);
}