/* ============================================
   Modern Interactive Portfolio
   ============================================ */

.portfolio {
    background: transparent; /* Particles görünsün */
}

[data-theme="light"] .portfolio {
    background: transparent; /* Particles görünsün */
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    position: relative;
}

.portfolio-filters {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-4xl);
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-xl);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    color: var(--text-primary);
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

/* Light mode filter buttons - dark green background with white text */
[data-theme="light"] .filter-btn:hover,
[data-theme="light"] .filter-btn.active {
    background: var(--gradient-primary);
    color: #ffffff;
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-4xl);
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 16 / 10;
    background: var(--bg-surface);
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    cursor: pointer;
    border: 1px solid var(--glass-border);
}

.portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.portfolio-item:hover::before {
    opacity: 0.9;
}

.portfolio-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-glow), var(--shadow-deep);
    border-color: var(--accent-primary);
}

.portfolio-image {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    z-index: 2;
    padding: var(--spacing-xl);
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
    transform: translateY(0);
}

.portfolio-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
}

.portfolio-category {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
}

.portfolio-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

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