.gallery-filters {
    background-color: var(--color-surface);
    padding: var(--space-8) 0;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--color-background);
    color: var(--color-text);
    border: 2px solid var(--color-border);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
    cursor: pointer;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.gallery-section {
    padding: 0 0 var(--space-16) 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 350px));
    gap: var(--space-8);
    margin-top: var(--space-12);
    justify-content: center;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.gallery-project {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-base);
    transition: all var(--transition-base);
    cursor: pointer;
}

.gallery-project:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    position: relative;
    width: 100%;
    height: 250px;
    overflow: hidden;
}

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

.gallery-project:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 54, 93, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.project-overlay div {
    text-align: center;
    color: white;
}

.project-overlay i {
    font-size: 2rem;
    margin-bottom: var(--space-2);
}

.project-info {
    padding: var(--space-6);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    margin-bottom: var(--space-3);
}

.project-description {
    color: var(--color-text-muted);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-4);
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.project-tag {
    background: var(--color-primary);
    color: white;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-base);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

.project-count {
    display: flex;
    align-items: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.project-count i {
    margin-right: var(--space-2);
}

/* Gallery Modal */
.gallery-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.gallery-modal .modal-content {
    cursor: default;
}

.modal-content {
    display: flex;
    width: 95%;
    height: 90%;
    max-width: 1200px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.modal-sidebar {
    width: 280px;
    background: var(--color-background);
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--color-text-muted);
    cursor: pointer;
    padding: var(--space-2);
    transition: color var(--transition-base);
}

.modal-close:hover {
    color: var(--color-text);
}

.progress-timeline {
    flex: 1;
    padding: var(--space-4);
    overflow-y: auto;
    max-height: 100%;
    min-height: 300px;
}

.progress-timeline::-webkit-scrollbar {
    width: 8px;
}

.progress-timeline::-webkit-scrollbar-track {
    background: var(--color-surface);
    border-radius: 4px;
}

.progress-timeline::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 4px;
    border: 2px solid var(--color-surface);
}

.progress-timeline::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

/* Firefox scrollbar */
.progress-timeline {
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) var(--color-surface);
}

.timeline-item {
    display: flex;
    align-items: center;
    padding: var(--space-3);
    margin-bottom: var(--space-2);
    border-radius: var(--radius-base);
    cursor: pointer;
    transition: background-color var(--transition-base);
}

.timeline-item:hover,
.timeline-item.active {
    background: var(--color-surface);
}

.timeline-number {
    width: 30px;
    height: 30px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    margin-right: var(--space-3);
    flex-shrink: 0;
}

.timeline-item.active .timeline-number {
    background: var(--color-accent);
}

.timeline-content h4 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--space-1);
}

.timeline-content p {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    line-height: var(--line-height-snug);
}

.modal-main {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-900);
}

.main-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: opacity 0.2s ease-out, transform 0.2s ease-out;
}

.image-navigation {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: var(--font-size-lg);
    cursor: pointer;
    transition: all var(--transition-base);
}

.image-navigation:hover {
    background: rgba(0, 0, 0, 0.8);
}

.image-navigation:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.nav-prev {
    left: var(--space-4);
}

.nav-next {
    right: var(--space-4);
}

.image-counter {
    position: absolute;
    bottom: var(--space-4);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--space-6);
        padding: 0 var(--space-4);
    }

    .filter-buttons {
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .filter-btn {
        padding: var(--space-2) var(--space-4);
        font-size: var(--font-size-sm);
    }

    .modal-content {
        flex-direction: row;
        width: 100vw;
        height: 100vh;
        border-radius: 0;
        max-width: none;
    }

    .modal-sidebar {
        display: none;
    }

    .modal-main {
        flex: 1;
        width: 100%;
        height: 100vh;
        position: relative;
    }


    .modal-close {
        position: absolute;
        top: var(--space-3);
        right: var(--space-3);
        width: 56px;
        height: 56px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: rgba(220, 38, 38, 0.9);
        color: white;
        border: 3px solid rgba(255, 255, 255, 0.8);
        z-index: 25;
        font-size: 24px;
        font-weight: bold;
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
        backdrop-filter: blur(8px);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .modal-close:hover,
    .modal-close:active {
        background: rgba(239, 68, 68, 1);
        border-color: white;
        transform: scale(1.15) rotate(90deg);
        box-shadow: 0 8px 25px rgba(220, 38, 38, 0.5);
    }

    .modal-close::before {
        content: '';
        position: absolute;
        top: -3px;
        left: -3px;
        right: -3px;
        bottom: -3px;
        border: 2px solid rgba(220, 38, 38, 0.6);
        border-radius: 50%;
        animation: closePulse 2s ease-in-out infinite;
        z-index: -1;
    }

    @keyframes closePulse {
        0%, 100% { transform: scale(1); opacity: 1; }
        50% { transform: scale(1.2); opacity: 0.3; }
    }

    .image-navigation {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-xl);
        background: rgba(0, 0, 0, 0.7);
        border: 2px solid rgba(255, 255, 255, 0.3);
        touch-action: manipulation;
        z-index: 15;
    }

    .nav-prev {
        left: var(--space-4);
    }

    .nav-next {
        right: var(--space-4);
    }

    .image-counter {
        bottom: var(--space-4);
        left: 50%;
        transform: translateX(-50%);
        padding: var(--space-3) var(--space-4);
        font-size: var(--font-size-sm);
        background: rgba(0, 0, 0, 0.8);
        border-radius: var(--radius-full);
        z-index: 15;
    }

    .main-image {
        width: 100%;
        height: 100%;
        object-fit: contain;
        background: var(--color-gray-900);
        transition: opacity 0.2s ease-out, transform 0.2s ease-out;
    }

    .main-image.loading {
        opacity: 0.7;
        transform: scale(0.98);
    }

    .modal-main::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 20px;
        right: 20px;
        height: 2px;
        background: linear-gradient(90deg,
            transparent 0%,
            rgba(255, 255, 255, 0.3) 50%,
            transparent 100%);
        transform: translateY(-50%);
        opacity: var(--show-swipe-hint, 0);
        animation: swipeHint 3s ease-in-out infinite;
        pointer-events: none;
    }

    @keyframes swipeHint {
        0%, 90%, 100% { opacity: 0; }
        30%, 70% { opacity: 1; }
    }

    .modal-main::before {
        content: 'Double-tap, tap outside, or use × to close';
        position: absolute;
        bottom: 60px;
        left: 50%;
        transform: translateX(-50%);
        background: rgba(0, 0, 0, 0.8);
        color: rgba(255, 255, 255, 0.9);
        padding: var(--space-2) var(--space-4);
        border-radius: var(--radius-full);
        font-size: var(--font-size-xs);
        opacity: var(--show-close-hint, 0);
        animation: closeHint 4s ease-in-out infinite;
        pointer-events: none;
        z-index: 10;
        backdrop-filter: blur(4px);
    }

    @keyframes closeHint {
        0%, 85%, 100% { opacity: 0; }
        15%, 70% { opacity: var(--show-close-hint, 0); }
    }
}

@media (max-width: 768px) and (pointer: coarse) {
    .modal-main {
        touch-action: pan-y pinch-zoom;
        user-select: none;
    }

    .main-image {
        touch-action: pan-y pinch-zoom;
        pointer-events: auto;
    }
}