/* File: css/components/portfolio.css */

/*
 * ============================================
 *  PORTFOLIO PAGE STYLES
 * ============================================
 *
 * Contains styles for:
 * 1. Filter bar (category buttons)
 * 2. Project cards (image overlay, hover effects)
 * 3. Project counter
 * 4. Project detail modal enhancements
 * 5. Filter animations
 */


/* ==========================================
   1. FILTER BAR
   ==========================================
   A horizontal row of buttons that filter projects
   by category. Active button is highlighted.
*/

.filter-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-3xl);
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    font-size: var(--fs-sm);
    font-weight: 500;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.filter-btn:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    background: rgba(100, 255, 218, 0.05);
}

.filter-btn.active {
    color: var(--text-on-accent);
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

[data-theme="light"] .filter-btn:hover {
    background: rgba(0, 102, 204, 0.05);
}

[data-theme="light"] .filter-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}


/* ==========================================
   2. PROJECT COUNTER
   ========================================== */

.project-counter {
    text-align: center;
    font-size: var(--fs-sm);
    font-family: var(--font-mono);
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.project-counter__number {
    color: var(--accent-primary);
    font-weight: 700;
}


/* ==========================================
   3. PROJECT CARDS GRID
   ========================================== */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
}


/* ==========================================
   4. PROJECT CARD
   ==========================================
   Each project card has:
   - Thumbnail image with hover overlay
   - Category badge
   - Title, description, tech tags
   - Action buttons (details, demo, code)
*/

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
}

.project-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Top accent line on hover */
.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
    z-index: 2;
}

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

/* ---- Image Area ---- */
.project-card__image-wrapper {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
}

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

.project-card:hover .project-card__image {
    transform: scale(1.08);
}

/* Placeholder for projects without screenshots */
.project-card__image-placeholder {
    width: 100%;
    height: 100%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 3rem;
    transition: transform var(--transition-slow);
}

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

/* ---- Image Overlay (appears on hover) ---- */
.project-card__overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 25, 47, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 1;
}

[data-theme="light"] .project-card__overlay {
    background: rgba(15, 23, 42, 0.8);
}

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

/* Overlay action buttons */
.project-card__overlay-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    transform: translateY(10px);
    opacity: 0;
}

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

/* Stagger the overlay buttons */
.project-card:hover .project-card__overlay-btn:nth-child(1) {
    transition-delay: 0.05s;
}
.project-card:hover .project-card__overlay-btn:nth-child(2) {
    transition-delay: 0.1s;
}
.project-card:hover .project-card__overlay-btn:nth-child(3) {
    transition-delay: 0.15s;
}

.project-card__overlay-btn:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--text-on-accent);
    transform: scale(1.1);
}

/* Category badge on image */
.project-card__category {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: var(--accent-primary);
    color: var(--text-on-accent);
    font-size: var(--fs-xs);
    font-weight: 600;
    font-family: var(--font-mono);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 2;
}

/* ---- Card Body ---- */
.project-card__body {
    padding: var(--space-lg);
}

.project-card__title {
    font-size: var(--fs-md);
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: var(--space-sm);
}

.project-card__description {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
    /* Clamp to 3 lines */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Tech tags */
.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.project-card__tag {
    padding: 2px 8px;
    background: rgba(100, 255, 218, 0.08);
    border: 1px solid rgba(100, 255, 218, 0.15);
    color: var(--accent-primary);
    font-size: 0.7rem;
    font-family: var(--font-mono);
    border-radius: var(--radius-sm);
}

[data-theme="light"] .project-card__tag {
    background: rgba(0, 102, 204, 0.06);
    border-color: rgba(0, 102, 204, 0.12);
    color: var(--accent-primary);
}

/* Card footer with links */
.project-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
}

.project-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--fs-xs);
    font-weight: 600;
    color: var(--accent-primary);
    font-family: var(--font-mono);
    transition: all var(--transition-fast);
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    text-decoration: none;
}

.project-card__link:hover {
    gap: var(--space-sm);
}

.project-card__link svg {
    transition: transform var(--transition-fast);
}

.project-card__link:hover svg {
    transform: translateX(3px);
}

.project-card__link--external {
    color: var(--text-secondary);
}

.project-card__link--external:hover {
    color: var(--accent-primary);
}


/* ==========================================
   5. FILTER ANIMATIONS
   ==========================================
   When filtering, cards that don't match
   fade out and shrink, then get hidden.
   Matching cards fade in.
*/

.project-card {
    transition: all 0.4s ease, opacity 0.3s ease, transform 0.3s ease;
}

.project-card.filter-hidden {
    opacity: 0;
    transform: scale(0.9);
    position: absolute;
    pointer-events: none;
    /* We use position:absolute so it doesn't take up space,
       but we need the grid to reflow. The JS handles this
       by toggling display after the animation. */
}

/* Animation for cards appearing */
.project-card.filter-visible {
    animation: filterFadeIn 0.4s ease forwards;
}

@keyframes filterFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}


/* ==========================================
   6. EMPTY STATE
   ==========================================
   Shown when no projects match the filter.
*/

.portfolio-empty {
    text-align: center;
    padding: var(--space-3xl) var(--space-xl);
    display: none;
}

.portfolio-empty.visible {
    display: block;
}

.portfolio-empty__icon {
    font-size: 4rem;
    margin-bottom: var(--space-md);
    display: block;
}

.portfolio-empty__title {
    font-size: var(--fs-xl);
    color: var(--text-heading);
    margin-bottom: var(--space-sm);
}

.portfolio-empty__text {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
}


/* ==========================================
   7. PROJECT MODAL ENHANCEMENTS
   ==========================================
   Additional styles for project detail modals
   (screenshots gallery, tech stack display)
*/

.modal__gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.modal__gallery-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-tertiary);
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: var(--fs-sm);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal__gallery-item:hover {
    border-color: var(--accent-primary);
    transform: scale(1.02);
}

.modal__gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal__tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.modal__tech-tag {
    padding: var(--space-xs) var(--space-md);
    background: rgba(100, 255, 218, 0.08);
    border: 1px solid rgba(100, 255, 218, 0.2);
    color: var(--accent-primary);
    font-size: var(--fs-xs);
    font-family: var(--font-mono);
    border-radius: var(--radius-full);
}

[data-theme="light"] .modal__tech-tag {
    background: rgba(0, 102, 204, 0.06);
    border-color: rgba(0, 102, 204, 0.15);
}

.modal__links {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

@media (max-width: 640px) {
    .modal__gallery {
        grid-template-columns: 1fr;
    }

    .modal__links {
        flex-direction: column;
    }
}