/* Before/After Comparison Section Styles */

.before-after {
    position: relative;
    background-color: #FAFAFA;
    padding: var(--space-24) 0;
    overflow: hidden;
}

/* Section Header */
.before-after__header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-16);
}

/* Comparison Grid */
.before-after__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

/* Comparison Card */
.comparison-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.comparison-card__container {
    position: relative;
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: var(--radius-2xl);
    background: var(--color-gray-200);
    box-shadow: var(--shadow-lg);
    cursor: ew-resize;
    user-select: none;
}

/* After Image (Background) */
.comparison-card__after {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Before Image (Overlay - will be clipped) */
.comparison-card__before {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    clip-path: inset(0 50% 0 0);
    transition: clip-path 0.01s linear;
}

/* Comparison Images */
.comparison-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    pointer-events: none;
    user-select: none;
}

/* Before/After Labels */
.comparison-label {
    position: absolute;
    top: var(--space-4);
    padding: var(--space-2) var(--space-4);
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 2;
}

.comparison-label--before {
    left: var(--space-4);
}

.comparison-label--after {
    right: var(--space-4);
}

/* Slider Control */
.comparison-slider {
    position: absolute;
    top: 0;
    left: 50%;
    width: 4px;
    height: 100%;
    transform: translateX(-50%);
    z-index: 10;
    cursor: ew-resize;
}

.comparison-slider__line {
    position: absolute;
    top: 0;
    left: 50%;
    width: 4px;
    height: 100%;
    background: var(--color-white);
    transform: translateX(-50%);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

.comparison-slider__button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: ew-resize;
    transition: transform var(--transition-base);
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
}

.comparison-slider__button:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

.comparison-slider__button:active {
    transform: translate(-50%, -50%) scale(0.95);
}

.comparison-slider__button svg {
    pointer-events: none;
}

/* Card Content */
.comparison-card__content {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.comparison-card__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0;
    line-height: var(--line-height-tight);
}

.comparison-card__description {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

/* Usage Hint */
.before-after__hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-6);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto;
}

.before-after__hint svg {
    color: var(--color-primary);
    animation: bounce-horizontal 2s ease-in-out infinite;
}

.before-after__hint svg:first-child {
    animation-delay: 0s;
}

.before-after__hint svg:last-child {
    animation-delay: 1s;
    transform: rotate(180deg);
}

@keyframes bounce-horizontal {
    0%, 100% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(8px);
    }
}

/* Active State */
.comparison-card__container.dragging {
    cursor: ew-resize;
}

.comparison-card__container.dragging .comparison-slider__button {
    transform: translate(-50%, -50%) scale(1.1);
}

/* Placeholder for images */
.comparison-card__container.loading .comparison-card__after::after,
.comparison-card__container.loading .comparison-card__before::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        var(--color-gray-200) 0%,
        var(--color-gray-100) 100%
    );
}

/* Responsive Design */
@media (max-width: 1279px) {
    .before-after__grid {
        gap: var(--space-8);
    }
}

@media (max-width: 1023px) {
    .before-after {
        padding: var(--space-16) 0;
    }
    
    .before-after__header {
        margin-bottom: var(--space-12);
    }
    
    .before-after__grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
        margin-bottom: var(--space-8);
    }
}

@media (max-width: 767px) {
    .before-after {
        padding: var(--space-12) 0;
    }
    
    .before-after__grid {
        gap: var(--space-8);
    }
    
    .comparison-card__title {
        font-size: var(--font-size-lg);
    }
    
    .comparison-card__description {
        font-size: var(--font-size-sm);
    }
    
    .comparison-slider__button {
        width: 40px;
        height: 40px;
    }
    
    .comparison-slider__button svg {
        width: 28px;
        height: 28px;
    }
    
    .before-after__hint {
        flex-direction: column;
        gap: var(--space-2);
        padding: var(--space-6);
        text-align: center;
    }
    
    .before-after__hint svg {
        display: none;
    }
}

@media (max-width: 639px) {
    .comparison-card__container {
        aspect-ratio: 1;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .comparison-slider__button {
        width: 56px;
        height: 56px;
    }
    
    .comparison-slider__button svg {
        width: 36px;
        height: 36px;
    }
}

/* Print Styles */
@media print {
    .before-after {
        background: white;
        padding: 2cm 0;
    }
    
    .before-after__grid {
        grid-template-columns: 1fr;
        gap: 1cm;
    }
    
    .comparison-card__container {
        break-inside: avoid;
    }
    
    .comparison-slider,
    .before-after__hint {
        display: none;
    }
    
    /* Show before image at 50% for print */
    .comparison-card__before {
        clip-path: inset(0 50% 0 0);
    }
}

/* Accessibility */
.comparison-slider:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 4px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .comparison-slider__line {
        background: var(--color-black);
    }
    
    .comparison-slider__button {
        border: 2px solid var(--color-black);
    }
}