/* Projects Page Styles - Enhanced Spacing */

/* Filter Section */
.filter-section {
    padding: var(--spacing-2xl) 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-100);
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 20px; /* Increased from var(--spacing-md) to 20px */
    justify-content: center;
    margin-bottom: 40px; /* Added proper margin-bottom */
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--white);
    color: var(--gray-700);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s, height 0.4s;
    z-index: -1;
}

.filter-btn:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 122, 255, 0.1);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    border-color: transparent;
}

.filter-btn.active::before {
    width: 200%;
    height: 200%;
}

/* Projects Section */
.projects-section {
    padding: var(--spacing-3xl) 0;
    background: var(--gray-50);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px; /* Increased from var(--spacing-xl) to 40px */
    row-gap: 40px; /* Explicit row gap for better vertical spacing */
    margin-top: 0; /* Remove extra margin since filter has margin-bottom */
    align-items: stretch; /* ensure cards stretch to equal height per row */
}

/* Project Card */
.project-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-slow);
    cursor: pointer;
    animation: fadeIn 0.5s ease;
    border: 1px solid rgba(0, 122, 255, 0.08);
    position: relative;
    display: flex;            /* equalize card heights */
    flex-direction: column;   /* stack image and content */
    height: 100%;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform var(--transition-base);
    transform-origin: left;
    z-index: 10;
}

.project-card:hover::before {
    transform: scaleX(1);
}

.project-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 122, 255, 0.15);
    border-color: rgba(0, 122, 255, 0.2);
}

.project-card.hidden {
    display: none;
}

/* Project Image */
.project-image {
    position: relative;
    height: 320px;            /* unified image height across all cards */
    overflow: hidden;
    background: var(--gray-200);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

/* Uniform content area for all cards */
.project-info {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    min-height: 200px; /* ensures consistent card height */
}

.project-info h3 {
    font-size: var(--font-size-xl);
    margin: 0;
    color: var(--dark);
}

.project-info .project-location {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.project-info .project-description {
    color: var(--gray-700);
    line-height: 1.6;
    /* clamp to avoid variable heights from long text */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Before/After full-view: show entire image without cropping */
.project-card:has(.project-badge) .project-image {
    background: var(--gray-100);
}

.project-card:has(.project-badge) .project-image img {
    object-fit: contain;
}

.project-card:has(.project-badge):hover .project-image img {
    transform: none;
}

/* Fallback selector by image path for browsers without :has support */
.project-image img[src*="Vorher Nacher"],
.project-image img[src*="bilder-vorher-nacher"] {
    object-fit: contain;
}

.project-card:hover .project-image img[src*="Vorher Nacher"],
.project-card:hover .project-image img[src*="bilder-vorher-nacher"] {
    transform: none;
}

/* Normalize special large gallery card to standard dimensions */
.project-card-large .gallery-thumbs { display: none; }
.project-card-large .gallery-main .project-image { height: 320px; }
.project-card-large .project-stats { display: none; }

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-category {
    background: var(--primary);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* Project Content */
.project-content {
    padding: var(--spacing-xl);
}

.project-content h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.project-location {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.project-location::before {
    content: '';
    width: 16px;
    height: 16px;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none"><path d="M21 10C21 17 12 23 12 23C12 23 3 17 3 10C3 7.61305 3.94821 5.32387 5.63604 3.63604C7.32387 1.94821 9.61305 1 12 1C14.3869 1 16.6761 1.94821 18.364 3.63604C20.0518 5.32387 21 7.61305 21 10Z" stroke="%23636366" stroke-width="2"/><circle cx="12" cy="10" r="3" stroke="%23636366" stroke-width="2"/></svg>');
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0.7;
}

.project-content p {
    color: var(--gray-700);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

/* Project Tags */
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--gray-50);
    color: var(--gray-700);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 30px; /* Slightly reduced for medium screens */
        row-gap: 35px;
    }
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 25px; /* Reduced for mobile but still generous */
        row-gap: 30px;
    }
    
    .filter-buttons {
        justify-content: flex-start;
        overflow-x: auto;
        padding: 0 var(--spacing-md);
        -webkit-overflow-scrolling: touch;
        gap: 15px; /* Maintained good spacing on mobile */
        margin-bottom: 30px; /* Reduced for mobile */
    }
    
    .filter-btn {
        white-space: nowrap;
        flex-shrink: 0; /* Prevent buttons from shrinking */
    }
}

@media (max-width: 480px) {
    .projects-grid {
        gap: 20px;
        row-gap: 25px;
    }
    
    .filter-buttons {
        gap: 12px;
        margin-bottom: 25px;
    }
}