.projects {
    background: var(--bg-secondary);
    position: relative;
}


.projects::before {
    content: '';
    position: absolute;
    top: 5%;
    left: -5%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(var(--color-sage-rgb), 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.projects::after {
    content: '';
    position: absolute;
    bottom: 10%;
    right: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(var(--color-sand-rgb), 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}


.projects__controls {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

@media (min-width: 768px) {
    .projects__controls {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.projects__filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.filter-btn {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--color-gray-700);
    border-radius: var(--radius-full);
    transition: all var(--duration-fast) var(--ease-out);
    cursor: none;
}

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


.filter-btn:nth-child(2):hover,
.filter-btn:nth-child(2).active { background: var(--color-coral); border-color: var(--color-coral); }
.filter-btn:nth-child(3):hover,
.filter-btn:nth-child(3).active { background: var(--color-sage); border-color: var(--color-sage); color: var(--color-night); }
.filter-btn:nth-child(4):hover,
.filter-btn:nth-child(4).active { background: var(--color-teal); border-color: var(--color-teal); }
.filter-btn:nth-child(5):hover,
.filter-btn:nth-child(5).active { background: var(--color-lilac); border-color: var(--color-lilac); color: var(--color-night); }

.projects__view-toggle {
    display: flex;
    gap: var(--space-xs);
    padding: var(--space-xs);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.view-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--text-tertiary);
    background: transparent;
    border-radius: var(--radius-sm);
    transition: all var(--duration-fast) var(--ease-out);
    cursor: none;
}

.view-btn svg {
    width: 20px;
    height: 20px;
}

.view-btn:hover,
.view-btn.active {
    color: var(--text-primary);
    background: var(--color-gray-800);
}


.projects__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

@media (min-width: 640px) {
    .projects__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .projects__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-xl);
    }
}


.projects__grid.bento {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: minmax(250px, auto);
}

@media (min-width: 768px) {
    .projects__grid.bento {
        grid-template-columns: repeat(4, 1fr);
        grid-auto-rows: minmax(200px, auto);
    }
}

.projects__grid.bento .project-card:nth-child(1) {
    grid-column: span 2;
    grid-row: span 2;
}

.projects__grid.bento .project-card:nth-child(4) {
    grid-column: span 2;
}

.projects__grid.bento .project-card:nth-child(7) {
    grid-column: span 2;
    grid-row: span 2;
}


.project-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: none;
    transition: all var(--duration-normal) var(--ease-out);
}

.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    transition: border-color var(--duration-fast) var(--ease-out);
    pointer-events: none;
    z-index: 2;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}


.project-card:hover::before {
    border-color: var(--color-primary);
}

.project-card:nth-child(2):hover::before { border-color: var(--color-coral); }
.project-card:nth-child(3):hover::before { border-color: var(--color-sage); }
.project-card:nth-child(4):hover::before { border-color: var(--color-lilac); }
.project-card:nth-child(5):hover::before { border-color: var(--color-sand); }
.project-card:nth-child(6):hover::before { border-color: var(--color-teal); }
.project-card:nth-child(7):hover::before { border-color: var(--color-coral); }
.project-card:nth-child(8):hover::before { border-color: var(--color-sage); }


.project-card__image {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
}

.bento .project-card__image {
    position: absolute;
    inset: 0;
    aspect-ratio: auto;
}

.project-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--duration-slow) var(--ease-out);
}

.project-card:hover .project-card__img {
    transform: scale(1.05);
}


.project-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(10, 10, 10, 0.3) 50%,
        rgba(10, 10, 10, 0.8) 100%
    );
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
}

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


.project-card__pdf-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--text-xs);
    font-weight: var(--weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    color: var(--color-white);
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    z-index: 3;
}


.project-card__img.pdf-thumbnail {
    background: var(--bg-tertiary);
}

.project-card__img.pdf-thumbnail-loaded {
    animation: fadeIn var(--duration-normal) var(--ease-out);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}


.project-card__content {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-lg);
    z-index: 1;
}

.bento .project-card__content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    transform: translateY(20px);
    opacity: 0;
    transition: all var(--duration-normal) var(--ease-out);
}

.bento .project-card:hover .project-card__content {
    transform: translateY(0);
    opacity: 1;
}


.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.project-card__tag {
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    color: var(--color-primary);
}


.project-card__title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--weight-bold);
    color: var(--text-primary);
    transition: color var(--duration-fast) var(--ease-out);
}

.project-card:hover .project-card__title {
    color: var(--color-primary);
}


.project-card__description {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}


.project-card__view {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    opacity: 0;
    transition: all var(--duration-normal) var(--ease-out);
    z-index: 3;
}

.project-card__view svg {
    width: 24px;
    height: 24px;
}

.project-card:hover .project-card__view {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}


.project-card.tilting {
    transform-style: preserve-3d;
    perspective: 1000px;
}


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

.project-card.filtering {
    opacity: 0;
    transform: scale(0.9);
}


.project-card.loading .project-card__img {
    background: var(--bg-tertiary);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { opacity: 0.5; }
    50% { opacity: 0.8; }
    100% { opacity: 0.5; }
}