/* ============================================
   Portfolio Page Styles
   ============================================ */

/* ============================================
   Portfolio Tabs
   ============================================ */

.portfolio-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
    border-bottom: 2px solid var(--border-color);
}

.tab-button {
    padding: var(--spacing-sm) var(--spacing-md);
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    position: relative;
    transition: all var(--transition-speed);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}

.tab-button:hover {
    color: var(--primary-color);
}

.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* ============================================
   Tab Content
   ============================================ */

.tab-content-container {
    margin-top: var(--spacing-lg);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Portfolio Grid
   ============================================ */

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

/* Ensure 3 columns on larger screens */
@media (min-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================
   Portfolio Card
   ============================================ */

.portfolio-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transition-speed);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.portfolio-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* ============================================
   3D Model Viewer Container
   ============================================ */

.model-viewer {
    position: relative;
    width: 100%;
    aspect-ratio: 1.2 / 1;
    background: #ffffff;
    overflow: hidden;
    border-radius: 16px 16px 0 0;
}

.model-viewer canvas {
    width: 100% !important;
    height: 100% !important;
    display: block;
}

/* Fallback thumbnail */
.model-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.model-thumbnail.hidden {
    display: none;
}

/* Loading indicator for 3D models */
.model-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    z-index: 10;
}

/* Circular progress indicator */
.progress-circle {
    position: relative;
    width: 80px;
    height: 80px;
}

.progress-circle svg {
    transform: rotate(-90deg);
    width: 100%;
    height: 100%;
}

.progress-circle-bg {
    fill: none;
    stroke: var(--border-color);
    stroke-width: 8;
}

.progress-circle-fill {
    fill: none;
    stroke: var(--primary-color);
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dashoffset 0.3s ease;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
}

.loading-label {
    color: var(--text-light);
    font-size: 0.9rem;
    text-align: center;
}

/* Error state */
.model-error {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #dc2626;
    font-size: 0.85rem;
    text-align: center;
    padding: var(--spacing-sm);
}

/* ============================================
   Card Information
   ============================================ */

.card-info {
    padding: var(--spacing-md);
    background: linear-gradient(135deg, #e9d5ff 0%, #ddd6fe 100%);
    border-radius: 0 0 16px 16px;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: var(--spacing-xs);
}

.card-meta {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.875rem;
    color: var(--text-light);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.meta-label {
    font-weight: 500;
    color: var(--text-color);
}

.card-description {
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.5;
}

/* More button */
.card-more-button {
    margin-top: var(--spacing-sm);
    padding: 0.375rem 0.75rem;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--primary-color);
    cursor: pointer;
    transition: all var(--transition-speed);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.card-more-button:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateX(2px);
}

.card-more-button .arrow-icon {
    font-size: 0.9rem;
    transition: transform var(--transition-speed);
}

.card-more-button:hover .arrow-icon {
    transform: translateX(3px);
}

/* ============================================
   Responsive Portfolio Grid
   ============================================ */

@media (max-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .portfolio-tabs {
        gap: 0;
    }

    .tab-button {
        padding: var(--spacing-sm);
        font-size: 0.9rem;
        flex: 1;
        text-align: center;
    }

    .card-info {
        padding: var(--spacing-sm);
    }

    .card-title {
        font-size: 1rem;
    }

    .card-meta {
        font-size: 0.8rem;
    }
}

/* ============================================
   Empty State
   ============================================ */

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-light);
}

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

/* ============================================
   Interaction Hints
   ============================================ */

.interaction-hint {
    position: absolute;
    bottom: var(--spacing-xs);
    right: var(--spacing-xs);
    background: rgba(0, 0, 0, 0.6);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.portfolio-card:hover .interaction-hint {
    opacity: 1;
}