/* ============================================
   Research Page Styles
   ============================================ */

.page-content {
    padding-top: 60px;
}

.page-hero {
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 700px;
    line-height: 1.6;
}

.back-link {
    display: inline-block;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.back-link:hover {
    color: var(--color-text);
}

/* Philosophy Block */
.philosophy-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.philosophy-block {
    max-width: 800px;
    padding: var(--spacing-xl);
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
}

.philosophy-image img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

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

    .philosophy-image {
        order: -1;
    }
}

.philosophy-block h2 {
    margin-bottom: var(--spacing-md);
}

.philosophy-block p {
    color: var(--color-text-muted);
    font-size: 1.0625rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.philosophy-block p:last-child {
    margin-bottom: 0;
}

/* Research Grid */
.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.research-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition);
}

.research-card:hover {
    box-shadow: var(--shadow-md);
}

.research-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.research-icon {
    font-size: 1.75rem;
}

.research-card h3 {
    font-size: 1.25rem;
    margin: 0;
}

.research-card > p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.research-details {
    margin-bottom: var(--spacing-md);
}

.research-details h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.research-details ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.research-details li {
    font-size: 0.9375rem;
    color: var(--color-text);
    padding: 0.375rem 0;
    padding-left: 1.25rem;
    position: relative;
}

.research-details li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-text-light);
}

.research-tags-small {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border-light);
}

.research-tags-small span {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-muted);
    background: var(--color-bg-alt);
    padding: 0.25rem 0.625rem;
    border-radius: 4px;
}

/* Technologies Section */
.technologies-section {
    background: var(--color-bg-alt);
}

.tech-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.tech-category h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-list span {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text);
    background: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

/* CTA Section */
.cta-section {
    background: var(--color-bg);
}

.cta-block {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-2xl);
    background: var(--color-bg-dark);
    border-radius: var(--radius-lg);
    color: white;
}

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

.cta-block p {
    color: rgba(255,255,255,0.7);
    margin-bottom: var(--spacing-md);
}

.cta-block .btn-primary {
    background: white;
    color: var(--color-text);
}

.cta-block .btn-primary:hover {
    background: var(--color-bg-alt);
}

/* Active nav state */
.nav-links a.active {
    color: var(--color-text);
}

/* Responsive */
@media (max-width: 768px) {
    .research-grid {
        grid-template-columns: 1fr;
    }

    .philosophy-block {
        padding: var(--spacing-md);
    }
}