/* ===== PAGE HEADER ===== */
.page-header {
    background: linear-gradient(135deg, #F5F3FF 0%, #EDE9FE 100%);
    border-bottom: 1px solid var(--border);
    padding: 5rem 0 4rem;
}

.page-header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.page-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 1rem 0;
    line-height: 1.2;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--primary);
    gap: 0.8rem;
}

.detail-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.detail-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.4rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid var(--border);
    background: white;
    color: var(--text-primary);
    transition: var(--transition);
}

.detail-link:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.detail-link-primary {
    background: var(--gradient-main);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(108, 49, 214, 0.3);
}

.detail-link-primary:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(108, 49, 214, 0.4);
}

/* ===== PORTFOLIO SECTION ===== */
.portfolio-section {
    padding: 5rem 0;
}

.portfolio-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== FILTER ===== */
.filter-btns {
    display: flex;
    gap: 0.6rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    padding: 0.55rem 1.3rem;
    background: white;
    border: 1px solid var(--border);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
}

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

/* ===== PROJECTS GRID ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.8rem;
}

.project-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.project-card:hover {
    border-color: var(--primary-soft);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.project-thumb {
    height: 220px;
    overflow: hidden;
    position: relative;
}

.project-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.thumb-placeholder {
    width: 100%;
    height: 100%;
    background: var(--muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--border);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(30, 27, 75, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    opacity: 0;
    transition: var(--transition);
}

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

.overlay-btn {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
    transition: var(--transition);
    text-decoration: none;
}

.overlay-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: scale(1.1);
    color: white;
}

.project-body { padding: 1.4rem; }

.project-category {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary);
    display: block;
    margin-bottom: 0.4rem;
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.project-title a { color: inherit; }
.project-title a:hover { color: var(--primary); }

.project-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tech-tag {
    padding: 0.2rem 0.7rem;
    background: var(--muted);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 500;
}

/* ===== PROJECT DETAIL ===== */
.project-banner {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 3rem;
    max-height: 450px;
}

.project-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-info-grid {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    padding: 1.5rem;
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 3rem;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.info-label {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.info-label i { color: var(--primary); }

.info-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.detail-block { margin-bottom: 3rem; }

.block-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.block-title i { color: var(--primary); }

.detail-text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.9;
}

.challenge-box {
    padding: 1.5rem;
    background: #fff7ed;
    border-left: 4px solid #f59e0b;
    border-radius: 0 var(--radius) var(--radius) 0;
}

.solution-box {
    padding: 1.5rem;
    background: #f0fdf4;
    border-left: 4px solid #059669;
    border-radius: 0 var(--radius) var(--radius) 0;
}

/* ===== GALLERY ===== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.2rem;
}

.gallery-item {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}

.gallery-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.gallery-item:hover img { transform: scale(1.05); }

.gallery-caption {
    padding: 0.6rem 1rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
    background: white;
    text-align: center;
}

/* ===== RELATED PROJECTS ===== */
.related-projects {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
}

.related-project-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    text-decoration: none;
}

.related-project-card:hover {
    border-color: var(--primary-soft);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.related-project-card img {
    width: 100%;
    height: 140px;
    object-fit: cover;
}

.related-thumb-placeholder {
    width: 100%;
    height: 140px;
    background: var(--muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--border);
}

.related-project-info {
    padding: 1rem;
}

.related-project-info h4 {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 0.3rem;
}

/* ===== CTA ===== */
.portfolio-cta { padding: 0 0 6rem; }

.cta-card {
    background: var(--text-primary);
    border-radius: 24px;
    padding: 5rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-glow {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle,
        rgba(108, 49, 214, 0.3) 0%, transparent 70%);
    pointer-events: none;
}

.cta-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin: 1rem 0;
    line-height: 1.3;
}

.cta-subtitle {
    color: rgba(255,255,255,0.6);
    font-size: 1rem;
    margin-bottom: 2.5rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-btns {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-outline-white {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.8rem;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    background: transparent;
    color: white;
    border: 2px solid rgba(255,255,255,0.3);
    transition: var(--transition);
    text-decoration: none;
}

.btn-outline-white:hover {
    background: rgba(255,255,255,0.1);
    border-color: white;
    color: white;
    transform: translateY(-3px);
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 5rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    color: var(--border);
    margin-bottom: 1rem;
    display: block;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .page-title { font-size: 2rem; }
    .projects-grid { grid-template-columns: 1fr; }
    .related-projects { grid-template-columns: 1fr; }
    .project-info-grid { flex-direction: column; gap: 1rem; }
    .gallery-grid { grid-template-columns: 1fr; }
    .cta-title { font-size: 1.8rem; }
    .cta-card { padding: 3rem 1.5rem; }
}

@media (max-width: 480px) {
    .filter-btns { justify-content: flex-start; }
}