/**
 * Portfolio Styles - Premium Design
 * Dynamic Developer
 */

/* ============================================
   PORTFOLIO FILTERS
   ============================================ */
.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: var(--space-3);
    flex-wrap: wrap;
    margin-bottom: var(--space-10);
}

.filter-btn {
    padding: var(--space-3) var(--space-6);
    background: var(--white);
    color: var(--dark-700);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 0;
}

.filter-btn span {
    position: relative;
    z-index: 1;
}

.filter-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.filter-btn.active {
    background: var(--primary-gradient);
    color: var(--white);
    border-color: transparent;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.filter-btn.active::before {
    opacity: 1;
}

/* ============================================
   PORTFOLIO GRID
   ============================================ */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-10);
}

/* ============================================
   PORTFOLIO CARDS
   ============================================ */
.portfolio-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-slow);
    position: relative;
    cursor: pointer;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.portfolio-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 0;
    pointer-events: none;
}

.portfolio-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-2xl), 0 0 40px rgba(102, 126, 234, 0.4);
}

.portfolio-card:hover::before {
    opacity: 0.03;
}

/* Portfolio Image Container */
.portfolio-image {
    position: relative;
    height: 280px;
    overflow: hidden;
    background: var(--gray-200);
}

.portfolio-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.portfolio-card:hover .portfolio-image::after {
    opacity: 1;
}

.portfolio-image-gradient {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: transform var(--transition-slow);
}

.portfolio-card:hover .portfolio-image-gradient {
    transform: scale(1.1);
}

.portfolio-image-icon {
    font-size: 90px;
    color: var(--white);
    opacity: 0.25;
    transition: all var(--transition-base);
    position: relative;
    z-index: 1;
}

.portfolio-card:hover .portfolio-image-icon {
    opacity: 0.4;
    transform: scale(1.1) rotate(5deg);
}

/* View Project Overlay */
.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 2;
}

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

.portfolio-view-btn {
    padding: var(--space-4) var(--space-8);
    background: var(--white);
    color: var(--primary-color);
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--text-base);
    font-weight: var(--font-bold);
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    transform: translateY(20px);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.portfolio-card:hover .portfolio-view-btn {
    transform: translateY(0);
}

.portfolio-view-btn:hover {
    background: var(--primary-gradient);
    color: var(--white);
    transform: scale(1.05);
}

/* Portfolio Content */
.portfolio-content {
    padding: var(--space-6);
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

.portfolio-category {
    display: inline-block;
    margin-bottom: var(--space-3);
}

.portfolio-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--dark-900);
    margin-bottom: var(--space-3);
    line-height: 1.3;
    transition: color var(--transition-fast);
}

.portfolio-card:hover .portfolio-title {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.portfolio-description {
    color: var(--dark-600);
    font-size: var(--text-base);
    line-height: 1.6;
    margin-bottom: var(--space-5);
    flex: 1;
}

.portfolio-tags {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
    margin-top: auto;
}

.portfolio-tag {
    padding: var(--space-2) var(--space-3);
    background: var(--gray-100);
    color: var(--dark-700);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    transition: all var(--transition-fast);
}

.portfolio-card:hover .portfolio-tag {
    background: var(--primary-light);
    color: var(--primary-dark);
    transform: translateY(-2px);
}

/* ============================================
   PROJECT MODAL
   ============================================ */
.portfolio-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: var(--z-modal);
    padding: var(--space-6);
    overflow-y: auto;
    animation: fadeIn var(--transition-base) ease-out;
}

.portfolio-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.portfolio-modal-content {
    background: var(--white);
    border-radius: var(--radius-2xl);
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: scaleIn var(--transition-slow) ease-out;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.portfolio-modal-close {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    width: 40px;
    height: 40px;
    background: var(--white);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    color: var(--dark-700);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    z-index: 10;
}

.portfolio-modal-close:hover {
    background: var(--error);
    color: var(--white);
    transform: rotate(90deg);
}

.portfolio-modal-image {
    width: 100%;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.portfolio-modal-image i {
    font-size: 120px;
    color: var(--white);
    opacity: 0.3;
}

.portfolio-modal-body {
    padding: var(--space-8);
}

.portfolio-modal-header {
    margin-bottom: var(--space-6);
}

.portfolio-modal-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-extrabold);
    margin-bottom: var(--space-3);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.portfolio-modal-meta {
    display: flex;
    gap: var(--space-6);
    flex-wrap: wrap;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-6);
    border-bottom: 2px solid var(--gray-200);
}

.portfolio-modal-meta-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.portfolio-modal-meta-label {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--dark-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.portfolio-modal-meta-value {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--dark-900);
}

.portfolio-modal-description {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--dark-700);
    margin-bottom: var(--space-6);
}

.portfolio-modal-features {
    margin-bottom: var(--space-6);
}

.portfolio-modal-features h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    color: var(--dark-900);
}

.portfolio-modal-features ul {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-3);
}

.portfolio-modal-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.portfolio-modal-features li:hover {
    background: var(--primary-light);
    transform: translateX(5px);
}

.portfolio-modal-features li i {
    color: var(--primary-color);
    font-size: var(--text-lg);
}

.portfolio-modal-technologies {
    margin-bottom: var(--space-6);
}

.portfolio-modal-technologies h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    color: var(--dark-900);
}

.portfolio-modal-tech-grid {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.portfolio-modal-tech-item {
    padding: var(--space-3) var(--space-5);
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--dark-700);
    transition: all var(--transition-fast);
}

.portfolio-modal-tech-item:hover {
    background: var(--primary-gradient);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   STATISTICS SECTION
   ============================================ */
.portfolio-stats {
    background: var(--gray-100);
    padding: var(--space-8) 0;
    margin-top: var(--space-12);
}

.portfolio-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
}

.portfolio-stat-card {
    background: var(--white);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.portfolio-stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.portfolio-stat-number {
    font-size: var(--text-5xl);
    font-weight: var(--font-extrabold);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-2);
}

.portfolio-stat-label {
    font-size: var(--text-base);
    color: var(--dark-600);
    font-weight: var(--font-medium);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes portfolioCardIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.portfolio-card {
    animation: portfolioCardIn var(--transition-slow) ease-out backwards;
}

.portfolio-card:nth-child(1) {
    animation-delay: 0.1s;
}

.portfolio-card:nth-child(2) {
    animation-delay: 0.2s;
}

.portfolio-card:nth-child(3) {
    animation-delay: 0.3s;
}

.portfolio-card:nth-child(4) {
    animation-delay: 0.4s;
}

.portfolio-card:nth-child(5) {
    animation-delay: 0.5s;
}

.portfolio-card:nth-child(6) {
    animation-delay: 0.6s;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: var(--space-6);
    }
}

@media (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .portfolio-filters {
        gap: var(--space-2);
    }

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

    .portfolio-image {
        height: 220px;
    }

    .portfolio-modal-content {
        margin: var(--space-4);
    }

    .portfolio-modal-image {
        height: 250px;
    }

    .portfolio-modal-body {
        padding: var(--space-6);
    }

    .portfolio-modal-title {
        font-size: var(--text-3xl);
    }

    .portfolio-modal-features ul {
        grid-template-columns: 1fr;
    }

    .portfolio-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .portfolio-stats-grid {
        grid-template-columns: 1fr;
    }
}