/* ========================================
   PORTFOLIO HERO
   ======================================== */

.portfolio-hero {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, #FFF 0%, #F8F8F8 100%);
    text-align: center;
}

.portfolio-hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.portfolio-hero h1 {
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* ========================================
   FILTER SECTION
   ======================================== */

.filter-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: var(--header-height);
    z-index: 100;
}

.filter-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: 6px;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

/* ========================================
   PORTFOLIO GRID
   ======================================== */

.portfolio-grid-section {
    padding: var(--spacing-3xl) 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.portfolio-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.portfolio-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

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

.portfolio-card.collapsed {
    cursor: pointer;
}

.portfolio-card.collapsed::after {
    content: '▼ Click to view details';
    display: block;
    text-align: center;
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.portfolio-card.expanded::after {
    content: '▲ Click to collapse';
    display: block;
    text-align: center;
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.portfolio-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: rgba(227, 30, 36, 0.1);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
    border-radius: 4px;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.portfolio-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.portfolio-card > p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

/* ========================================
   PORTFOLIO DETAILS
   ======================================== */

.portfolio-details {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background-color: var(--color-bg-light);
    border-radius: 8px;
}

.portfolio-details h4 {
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    margin-top: var(--spacing-md);
    font-size: 0.95rem;
}

.portfolio-details h4:first-child {
    margin-top: 0;
}

.portfolio-details p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.results-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-sm) 0;
}

.results-list li {
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    position: relative;
    color: var(--color-text-light);
    font-size: 0.9rem;
}

.results-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

/* ========================================
   PORTFOLIO STATS
   ======================================== */

.portfolio-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* ========================================
   PORTFOLIO TECH
   ======================================== */

.portfolio-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.tech-badge {
    padding: 4px 12px;
    background-color: var(--color-bg-light);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

/* ========================================
   CTA SECTION
   ======================================== */

.cta-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: var(--color-white);
    text-align: center;
}

.cta-content h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section .btn-primary {
    background-color: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-white);
}

.cta-section .btn-primary:hover {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

/* ========================================
   RESPONSIVE - TABLET
   ======================================== */

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

    .portfolio-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .filter-section {
        position: relative;
        top: 0;
    }
}

/* ========================================
   RESPONSIVE - MOBILE
   ======================================== */

@media (max-width: 480px) {
    .portfolio-hero {
        padding: var(--spacing-2xl) 0;
    }

    .portfolio-card {
        padding: var(--spacing-md);
    }

    .portfolio-details {
        padding: var(--spacing-sm);
    }

    .filter-buttons {
        gap: var(--spacing-xs);
    }

    .filter-btn {
        font-size: 0.875rem;
        padding: 6px 12px;
    }
}