/* ============================================
   Projects Page Specific Styles
   ============================================ */

/* Page Header */
.page-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md) 0;
}

.page-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.page-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    position: relative;
    padding-bottom: var(--spacing-lg);
}

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

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.project-title {
    font-size: var(--font-size-lg);
    margin: 0;
    color: var(--text-primary);
    flex: 1;
}

.expand-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.expand-toggle:hover {
    color: var(--text-primary);
    background-color: var(--bg-hover);
    border-color: var(--accent-secondary);
}

.expand-toggle svg {
    transition: transform var(--transition-fast);
}

.expand-toggle.expanded svg {
    transform: rotate(180deg);
}

.project-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.project-card .project-details.expanded {
    max-height: 600px;
}

.project-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: var(--spacing-sm) 0;
}

.project-problem {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-subtle);
}

.project-problem h4 {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.project-problem p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

.github-link {
    position: absolute;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.github-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-hover);
    border-color: var(--accent-secondary);
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .page-header {
        padding: var(--spacing-lg) 0;
    }
    
    .page-title {
        font-size: var(--font-size-3xl);
    }
    
    .page-description {
        font-size: var(--font-size-base);
    }
    
    .filter-controls {
        gap: var(--spacing-sm);
    }
}