/* ========================================
   Yemen University - Research Page Styles
   ======================================== */

/* Hero */
.research-hero {
    position: relative;
    min-height: 380px;
    display: flex;
    align-items: flex-end;
    padding: 120px 0 56px;
    overflow: hidden;
    margin-top: 72px;
}

.research-hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #0d2137 0%, #1a3a5c 100%);
}

.research-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(13,33,55,0.9) 0%, rgba(13,33,55,0.3) 60%, rgba(13,33,55,0.1) 100%);
}

.research-hero-content {
    position: relative;
    z-index: 2;
}

.research-hero-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    color: white;
    line-height: 1.15;
    margin-bottom: 14px;
}

.research-hero-desc {
    font-size: 17px;
    color: rgba(255,255,255,0.75);
    line-height: 1.7;
    max-width: 560px;
}

/* Stats */
.research-stats {
    padding: 48px 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-light);
}

.research-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.research-stat {
    text-align: center;
    padding: 24px;
}

.research-stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
    font-family: var(--font-en);
}

.research-stat-label {
    font-size: 15px;
    color: var(--text-secondary);
}

/* Research Areas */
.research-areas {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.areas-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.area-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    background: white;
    transition: var(--transition);
}

.area-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.area-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.area-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.area-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.area-count {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    padding: 4px 12px;
    background: var(--bg-secondary);
    border-radius: 100px;
}

/* Latest Research */
.latest-research {
    padding: 80px 0;
    background: var(--bg-primary);
}

.research-papers {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.paper-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    background: white;
    transition: var(--transition);
}

.paper-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(-4px);
}

.paper-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.paper-journal {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    padding: 4px 12px;
    background: var(--bg-secondary);
    border-radius: 100px;
}

.paper-year {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-tertiary);
    padding: 4px 12px;
    background: var(--bg-secondary);
    border-radius: 100px;
    font-family: var(--font-en);
}

.paper-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 8px;
}

.paper-authors {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.paper-abstract {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.paper-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.paper-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

.paper-link svg {
    transition: var(--transition);
}

.paper-link:hover svg {
    transform: translateX(-4px);
}

.paper-citations {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* Conferences */
.conferences-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.conferences-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.conference-card {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    background: white;
    transition: var(--transition);
}

.conference-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.conference-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 90px;
    padding: 16px;
    background: var(--primary);
    border-radius: var(--radius);
    color: white;
    text-align: center;
}

.conf-day {
    font-size: 28px;
    font-weight: 800;
    line-height: 1;
    font-family: var(--font-en);
}

.conf-month {
    font-size: 13px;
    font-weight: 600;
    margin-top: 4px;
}

.conf-year {
    font-size: 12px;
    opacity: 0.8;
    margin-top: 2px;
    font-family: var(--font-en);
}

.conference-info {
    flex: 1;
}

.conference-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.conference-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.conference-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.conference-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-tertiary);
}

.conference-meta svg {
    flex-shrink: 0;
}

/* Responsive */
@media (max-width: 1024px) {
    .research-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .areas-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .conference-card {
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    .research-hero {
        min-height: auto;
        padding: 100px 0 48px;
    }

    .research-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .research-stat {
        padding: 16px;
    }

    .areas-grid {
        grid-template-columns: 1fr;
    }

    .paper-card {
        padding: 24px;
    }

    .conference-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

    .conference-date {
        flex-direction: row;
        gap: 8px;
        min-width: auto;
        padding: 10px 16px;
    }

    .conf-day {
        font-size: 20px;
    }

    .conf-month,
    .conf-year {
        margin-top: 0;
    }
}