/* research-innovation.css - Featured domains cards, whitepapers download rows */

/* ==========================================
   1. Hero Header
   ========================================== */
.res-hero {
    background: linear-gradient(135deg, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0.35) 100%), url('../../assets/images/hero-section/research-innovation.webp') no-repeat center center/cover;
    color: var(--color-white);
    padding: var(--spacing-xxl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 4px solid var(--color-accent-main);
}

.res-hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 90% 10%, rgba(123, 97, 255, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.res-hero h1 {
    color: var(--color-white);
    font-size: 3rem;
    max-width: 800px;
    margin: 0 auto var(--spacing-sm);
    line-height: 1.25;
}

.res-hero p {
    color: var(--color-sky-blue);
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto;
    font-weight: 300;
}

.res-badge {
    background-color: rgba(124, 206, 250, 0.15);
    color: var(--color-sky-blue);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(124, 206, 250, 0.3);
}

/* ==========================================
   2. Fields Grid & Papers
   ========================================== */
.res-fields-section {
    padding: var(--spacing-xxl) 0;
}

.field-card {
    background: var(--color-white);
    transition: all var(--transition-fast);
}

.field-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent-main) !important;
    box-shadow: var(--shadow-hover);
}

.field-card h4 {
    font-size: 1.35rem;
    margin-bottom: var(--spacing-xs);
}

.field-card p {
    margin-bottom: 0;
    color: var(--color-text-muted);
}

/* Paper rows */
.paper-row {
    transition: all var(--transition-fast);
}

.paper-row:hover {
    border-color: var(--color-accent-main) !important;
    box-shadow: var(--shadow-soft);
}

/* ==========================================
   3. Responsive Adaptations
   ========================================== */
@media (max-width: 991px) {
    .fields-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 768px) {
    .fields-grid {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-md) !important;
    }
    
    .paper-row {
        flex-direction: column;
        align-items: flex-start !important;
        gap: var(--spacing-xs) !important;
    }
    
    .paper-row a {
        width: 100%;
        text-align: center;
    }
}