/* ============================================
   PORTFOLIO SECTION - MODERN PROFESSIONAL DESIGN
   ============================================ */

.portfolio-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 100%);
    position: relative;
}

.portfolio-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* Category Navigation */
.category-nav {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.category-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    backdrop-filter: blur(10px);
}

.category-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.category-btn.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, #764ba2 100%);
    border-color: var(--primary-color);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.category-btn i {
    font-size: 1.1rem;
}

/* Portfolio Grid */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    position: relative;
    z-index: 1;
}

@media (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* Project Card - Modern Professional Design */
.project-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.4s ease;
    position: relative;
    backdrop-filter: blur(10px);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.15);
}

/* Project Image */
.project-image {
    position: relative;
    height: 320px;
    overflow: hidden;
    border-radius: 12px 12px 0 0;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.5s ease;
}

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

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.1);
}

/* Project Overlay - Always Visible */
.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.6) 40%, rgba(0, 0, 0, 0.3) 70%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    opacity: 1;
    transition: all 0.3s ease;
}

.project-card:hover .project-overlay {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.98) 0%, rgba(0, 0, 0, 0.7) 40%, rgba(0, 0, 0, 0.4) 70%, transparent 100%);
}

.project-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
    margin: 0 0 0.5rem 0;
    font-family: 'Orbitron', monospace;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-description {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Project Card Hover Effect */
.project-card {
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.project-card:hover .project-details-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transform: translateX(5px);
}

/* Project Content */
.project-content {
    padding: 1.5rem;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-category {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    background: rgba(102, 126, 234, 0.15);
    border: 1px solid currentColor;
}

.project-code {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 0.3rem;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
}

.project-code:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.project-code i {
    font-size: 0.75rem;
}

.project-code .copy-icon {
    opacity: 0;
    transition: opacity 0.3s ease;
    margin-left: 0.2rem;
}

.project-code:hover .copy-icon {
    opacity: 1;
}

/* Project Footer */
.project-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(102, 126, 234, 0.1);
}

/* Project Tags */
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.project-tag {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    padding: 0.3rem 0.7rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: lowercase;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s ease;
}

.project-tag:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
}

/* Project Stats */
.project-stats {
    display: flex;
    gap: 1rem;
}

.project-stat {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.project-stat i {
    font-size: 0.9rem;
    color: var(--primary-color);
}

/* Project Details Button */
.project-details-btn {
    background: rgba(102, 126, 234, 0.15);
    border: 1px solid rgba(102, 126, 234, 0.3);
    color: #fff;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.project-details-btn:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: transparent;
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.project-details-btn i {
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.project-details-btn:hover i {
    transform: translateX(3px);
}

/* Loading State */
.portfolio-grid .fa-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Empty State */
.portfolio-empty {
    grid-column: 1/-1;
    text-align: center;
    padding: 4rem 2rem;
}

.portfolio-empty i {
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.1);
    margin-bottom: 1.5rem;
}

.portfolio-empty p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .portfolio-section {
        padding: 4rem 0;
    }
    
    .category-nav {
        gap: 0.5rem;
        margin-bottom: 2rem;
    }
    
    .category-btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }
    
    .project-image {
        height: 220px;
    }
    
    .project-overlay {
        padding: 1rem;
    }
    
    .project-title {
        font-size: 1rem;
    }
    
    .project-description {
        font-size: 0.85rem;
        -webkit-line-clamp: 2;
        line-clamp: 2;
    }
}

/* Smooth Transitions */
* {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.project-card * {
    transition: inherit;
}

/* Professional Hover Effects */
.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.1) 0%, 
        rgba(118, 75, 162, 0.1) 100%
    );
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

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

/* Section Header Enhancement */
.portfolio-section .section-header {
    margin-bottom: 3rem;
    position: relative;
    z-index: 1;
}

.portfolio-section .section-title {
    background: linear-gradient(135deg, #ffffff 0%, #667eea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.portfolio-section .section-subtitle {
    color: rgba(255, 255, 255, 0.6);
    font-size: 1.1rem;
}

/* ============================================
   SEARCH AND SORT CONTROLS
   ============================================ */

.portfolio-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 250px;
    max-width: 400px;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
}

.search-box input {
    width: 100%;
    padding: 0.8rem 1rem 0.8rem 2.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.sort-box {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sort-box i {
    color: var(--text-secondary);
}

.sort-box select {
    padding: 0.8rem 2.5rem 0.8rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23999' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

.sort-box select:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

.sort-box select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.sort-box select option {
    background: #1a1a2e;
    color: #ffffff;
    padding: 0.8rem;
}

.sort-box select option:hover,
.sort-box select option:checked {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
}

/* ============================================
   PAGINATION
   ============================================ */

#portfolioPagination {
    margin-top: 3rem;
    text-align: center;
}

.pagination {
    display: inline-flex;
    gap: 0.5rem;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.pagination-btn {
    min-width: 40px;
    height: 40px;
    padding: 0.5rem 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.pagination-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.pagination-btn.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, #764ba2 100%);
    border-color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-ellipsis {
    padding: 0 0.5rem;
    color: var(--text-secondary);
}

.pagination-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

/* Copy Notification */
.copy-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    z-index: 10000;
    opacity: 0;
    transform: translateX(100px);
    transition: all 0.3s ease;
}

.copy-notification.show {
    opacity: 1;
    transform: translateX(0);
}

.copy-notification i {
    font-size: 1.2rem;
}

/* Responsive Controls */
@media (max-width: 768px) {
    .portfolio-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .project-footer {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }
    
    .project-details-btn {
        width: 100%;
        justify-content: center;
    }
    
    .search-box {
        max-width: 100%;
    }
    
    .sort-box {
        justify-content: center;
    }
    
    .sort-box select {
        flex: 1;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
    
    .pagination-btn {
        min-width: 35px;
        height: 35px;
        font-size: 0.85rem;
    }
    
    .copy-notification {
        top: 10px;
        right: 10px;
        left: 10px;
        padding: 0.8rem 1rem;
        font-size: 0.9rem;
    }
}

/* ============================================
   PROJECT DETAILS MODAL
   ============================================ */

.project-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    animation: fadeIn 0.3s ease;
}

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

.project-modal {
    background: linear-gradient(135deg, rgba(26, 31, 55, 0.95) 0%, rgba(17, 24, 39, 0.95) 100%);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: 20px;
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    animation: slideUp 0.4s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.project-modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.project-modal-close:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: #ef4444;
    color: #ef4444;
    transform: rotate(90deg);
}

.project-modal-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 2rem;
    padding: 2rem;
}

.project-modal-image {
    position: sticky;
    top: 2rem;
    height: fit-content;
}

.project-modal-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.project-modal-placeholder {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #1a1f37 0%, #2d3748 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-size: 3rem;
}

.project-modal-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.project-modal-header {
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(102, 126, 234, 0.2);
}

.project-modal-category {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.project-modal-title {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.project-modal-section {
    padding: 1rem 0;
}

.project-modal-section h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #667eea;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.project-modal-short-desc {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    margin: 0;
}

.project-modal-full-desc {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    white-space: pre-wrap;
}

.project-modal-code {
    background: rgba(102, 126, 234, 0.1);
    border: 2px solid rgba(102, 126, 234, 0.3);
    border-radius: 10px;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    font-weight: 600;
}

.project-modal-code:hover {
    background: rgba(102, 126, 234, 0.2);
    border-color: #667eea;
    transform: translateX(5px);
}

.project-modal-code i:first-child {
    color: #667eea;
    font-size: 1.2rem;
}

.project-modal-code span {
    flex: 1;
    color: #fff;
}

.project-modal-code i:last-child {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

.project-modal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-modal-tag {
    background: rgba(102, 126, 234, 0.15);
    border: 1px solid rgba(102, 126, 234, 0.3);
    color: #a5b4fc;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.project-modal-tag:hover {
    background: rgba(102, 126, 234, 0.25);
    border-color: #667eea;
    transform: translateY(-2px);
}

.project-modal-stats {
    padding-top: 1rem;
    border-top: 1px solid rgba(102, 126, 234, 0.2);
    display: flex;
    gap: 1.5rem;
}

.project-modal-stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.project-modal-stat i {
    color: #667eea;
}

.project-tag-more {
    background: rgba(102, 126, 234, 0.2);
    border: 1px solid rgba(102, 126, 234, 0.4);
    color: #a5b4fc;
    padding: 0.35rem 0.75rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Responsive Modal */
@media (max-width: 768px) {
    .project-modal-overlay {
        padding: 1rem;
    }
    
    .project-modal {
        max-height: 95vh;
    }
    
    .project-modal-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1.5rem;
    }
    
    .project-modal-image {
        position: relative;
        top: 0;
    }
    
    .project-modal-title {
        font-size: 1.5rem;
    }
    
    .project-modal-close {
        top: 1rem;
        right: 1rem;
        width: 35px;
        height: 35px;
    }
}