/* ===================================
   PORTFOLIO PAGE
   =================================== */

/* Hero */
.portfolio-hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 160px 80px 80px;
    background: var(--dark);
    overflow: hidden;
}

.portfolio-hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.portfolio-hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    color: var(--light);
    margin: 16px 0 20px;
    letter-spacing: -1.5px;
}

.portfolio-hero-subtitle {
    font-size: 18px;
    color: var(--gray-300);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto 48px;
}

.portfolio-stats {
    display: flex;
    justify-content: center;
    gap: 64px;
}

.pstat-number {
    font-size: 40px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.pstat-label {
    font-size: 13px;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 6px;
}

/* Filter Bar */
.portfolio-filter-bar {
    background: var(--light);
    border-bottom: 1px solid var(--gray-200);
    padding: 0;
    position: sticky;
    top: 72px;
    z-index: 100;
}

.filter-tabs {
    display: flex;
    gap: 4px;
    padding: 16px 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.filter-tabs::-webkit-scrollbar {
    display: none;
}

.filter-tab {
    flex-shrink: 0;
    background: none;
    border: 1px solid var(--gray-200);
    border-radius: 40px;
    padding: 8px 22px;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.filter-tab:hover {
    border-color: var(--secondary);
    color: var(--secondary);
}

.filter-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--light);
}

/* Portfolio Grid */
.portfolio-section {
    padding: 80px 0 60px;
    background: var(--gray-100);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

/* Project Card */
.project-card {
    background: var(--light);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

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

/* Thumbnail */
.project-thumb {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.thumb-1  { background: linear-gradient(135deg, #0a2545 0%, #0066b1 100%); }
.thumb-2  { background: linear-gradient(135deg, #051a10 0%, #0d7a3a 60%, #00d4ff 100%); }
.thumb-3  { background: linear-gradient(135deg, #1a0a2e 0%, #6c3fc5 100%); }
.thumb-4  { background: linear-gradient(135deg, #050d18 0%, #0d1b2a 50%, #00d4ff 100%); }
.thumb-5  { background: linear-gradient(135deg, #1a1000 0%, #b36200 100%); }
.thumb-6  { background: linear-gradient(135deg, #001a2e 0%, #00527a 100%); }
.thumb-7  { background: linear-gradient(135deg, #1a0505 0%, #b31515 100%); }
.thumb-8  { background: linear-gradient(135deg, #0a0a0a 0%, #333 50%, #00d4ff 100%); }
.thumb-9  { background: linear-gradient(135deg, #0d1a10 0%, #1d5c2a 100%); }
.thumb-10 { background: linear-gradient(135deg, #1a0a00 0%, #7a3a00 100%); }
.thumb-11 { background: linear-gradient(135deg, #0a0520 0%, #2d0d6b 60%, #00d4ff 100%); }
.thumb-12 { background: linear-gradient(135deg, #001422 0%, #004466 100%); }

/* Decorative lines inside thumbnails */
.project-thumb::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 20px,
        rgba(255,255,255,0.03) 20px,
        rgba(255,255,255,0.03) 21px
    );
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.view-btn {
    background: var(--accent);
    color: var(--dark);
    font-weight: 600;
    font-size: 13px;
    padding: 10px 24px;
    border-radius: 40px;
    cursor: pointer;
    transform: translateY(8px);
    transition: transform var(--transition-base);
}

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

.project-category-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(8px);
    color: var(--light);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    padding: 4px 12px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.2);
}

.project-category-badge.ai-badge {
    background: rgba(0, 212, 255, 0.2);
    border-color: rgba(0, 212, 255, 0.4);
    color: var(--accent);
}

.project-category-badge.consulting-badge {
    background: rgba(0, 102, 177, 0.25);
    border-color: rgba(0, 102, 177, 0.4);
    color: #7ec8f0;
}

/* Card Body */
.project-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.project-industry {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--secondary);
}

.project-year {
    font-size: 12px;
    color: var(--gray-400);
}

.project-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
    line-height: 1.3;
}

.project-desc {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.65;
    flex: 1;
    margin-bottom: 16px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.project-tech span {
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    color: var(--gray-700);
    font-size: 11px;
    font-weight: 500;
    padding: 3px 10px;
    border-radius: 12px;
}

/* Featured card accent */
.featured-project {
    border-color: rgba(0, 212, 255, 0.3);
}

.featured-project .project-title {
    color: var(--primary);
}

/* Load More */
.load-more-wrapper {
    text-align: center;
    margin-top: 56px;
}

.btn-load-more {
    background: none;
    border: 2px solid var(--primary);
    color: var(--primary);
    font-family: var(--font-primary);
    font-size: 15px;
    font-weight: 600;
    padding: 14px 40px;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    letter-spacing: 0.3px;
}

.btn-load-more:hover {
    background: var(--primary);
    color: var(--light);
}

/* CTA Banner */
.portfolio-cta {
    background: var(--gradient-dark);
    padding: 100px 0;
    text-align: center;
}

.cta-inner h2 {
    font-size: 48px;
    font-weight: 800;
    color: var(--light);
    margin-bottom: 12px;
    letter-spacing: -1px;
}

.cta-inner p {
    font-size: 18px;
    color: var(--gray-400);
    margin-bottom: 36px;
}

/* Fade-in animation */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

.project-card.animate-in {
    animation: fadeInUp 0.45s cubic-bezier(0.4, 0, 0.2, 1) both;
}

/* ===================================
   RESPONSIVE
   =================================== */

@media (max-width: 1200px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .portfolio-hero-title {
        font-size: 52px;
    }
}

@media (max-width: 768px) {
    .portfolio-hero {
        padding: 140px 24px 60px;
        min-height: auto;
    }

    .portfolio-hero-title {
        font-size: 36px;
    }

    .portfolio-hero-subtitle {
        font-size: 16px;
    }

    .portfolio-stats {
        gap: 32px;
    }

    .pstat-number {
        font-size: 32px;
    }

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

    .cta-inner h2 {
        font-size: 32px;
    }

    .filter-tabs {
        padding: 12px 0;
    }
}

@media (max-width: 480px) {
    .portfolio-stats {
        flex-wrap: wrap;
        gap: 24px;
    }

    .pstat {
        min-width: 80px;
    }
}