/* --- Portfolio Specific Styles --- */

.portfolio-hero {
    position: relative;
    padding: 220px 0 120px;
    background: radial-gradient(circle at top right, rgba(108, 76, 241, 0.08), transparent 40%),
                radial-gradient(circle at bottom left, rgba(255, 122, 24, 0.05), transparent 40%);
    overflow: hidden;
}

.portfolio-hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.portfolio-hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-mockup-img {
    width: 100%;
    max-width: 600px;
    filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.15));
    animation: floating 6s ease-in-out infinite;
}

@keyframes floating {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* Filter Tabs */
.filter-section {
    padding: 2rem 0;
    z-index: 10;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 4rem;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.filter-btn {
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    border: 1px solid var(--border-light);
    background: var(--bg-white);
    color: var(--text-body);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 4px 15px rgba(108, 76, 241, 0.3);
}

/* Portfolio Grid Enhanced */
.portfolio-grid-main {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 3rem;
    margin-bottom: 6rem;
}

.portfolio-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.portfolio-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.card-img-box {
    position: relative;
    height: 250px;
    overflow: hidden;
    background: var(--bg-light);
}

.card-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-card:hover .card-img-box img {
    transform: scale(1.1);
}

.card-content {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-category {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-heading);
}

.card-desc {
    font-size: 0.95rem;
    color: var(--text-body);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.card-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    font-size: 0.75rem;
    background: var(--bg-light);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    color: var(--text-muted);
}

.card-results {
    background: rgba(108, 76, 241, 0.05);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border-left: 3px solid var(--primary);
}

.card-results p {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-heading);
}

.card-actions {
    display: flex;
    gap: 1rem;
    margin-top: auto;
}

.btn-sm {
    padding: 0.6rem 1.2rem;
    font-size: 0.875rem;
}

/* Case Study Section */
.case-study-section {
    background: var(--bg-light);
    padding: 100px 0;
}

.case-study-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: center;
}

.cs-content h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.cs-timeline {
    position: relative;
    padding-left: 2rem;
    border-left: 2px solid var(--border-light);
}

.cs-step {
    position: relative;
    margin-bottom: 2.5rem;
}

.cs-step::before {
    content: '';
    position: absolute;
    left: calc(-2rem - 6px);
    top: 5px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 4px rgba(108, 76, 241, 0.1);
}

.cs-step h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

/* Responsive Mockup Section */
.mockup-display {
    position: relative;
    height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mockup-device {
    position: absolute;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.1));
}

.mockup-desktop { width: 70%; z-index: 1; }
.mockup-tablet { width: 30%; left: 10%; bottom: 10%; z-index: 2; }
.mockup-mobile { width: 15%; right: 15%; bottom: 5%; z-index: 3; }

/* Responsive */
@media (max-width: 992px) {
    .portfolio-hero-container, .case-study-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .portfolio-hero-visual {
        order: -1;
    }
    .cs-timeline {
        text-align: left;
    }
}