/* ============================================================
   HOME PAGE — shared styles
   ============================================================ */

/* ------------------------------------------------------------
   Hero Section
   ------------------------------------------------------------ */
.hero-home {
    position: relative;
    width: 100%;
    height: 560px;
    background-color: #1b254b;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero-home__overlay {
    position: absolute;
    inset: 0;
    opacity: 0.2;
}

.hero-home__bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    mix-blend-mode: overlay;
}

.hero-home__gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, #1b254b, rgba(27, 37, 75, 0.9), transparent);
}

.hero-home__container {
    position: relative;
    z-index: 2;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

@media (min-width: 1024px) {
    .hero-home__container {
        padding: 0 2rem;
    }
}

.hero-home__content {
    max-width: 42rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Badge */
.hero-home__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(4px);
    width: fit-content;
}

.hero-home__badge-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: #60a5fa;
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-home__badge-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: #bfdbfe;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Title */
.hero-home__title {
    font-size: 3rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0;
}

@media (min-width: 1024px) {
    .hero-home__title {
        font-size: 3.75rem;
    }
}

/* Description */
.hero-home__desc {
    font-size: 1.125rem;
    color: #bfdbfe;
    line-height: 1.7;
    max-width: 36rem;
    margin: 0;
}

/* Actions */
.hero-home__actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    padding-top: 1rem;
}

/* Buttons */
.hero-home__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    border: none;
}

.hero-home__btn--primary {
    background: #ffffff;
    color: #1b254b;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
}

.hero-home__btn--primary:hover {
    background: #f9fafb;
}

.hero-home__btn--secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(4px);
}

.hero-home__btn--secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ------------------------------------------------------------
   Research Impact Section
   ------------------------------------------------------------ */
.research-impact {
    padding: 80px 0;
    background-color: #f8fbff;
}

.research-impact__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2.5rem;
}

.research-impact__title {
    font-size: 1.6rem;
    font-weight: 700;
    color: #1b254b;
    margin: 0;
}

.research-impact__year {
    font-size: 0.85rem;
    font-weight: 500;
    color: #6b7280;
    background: #e5e7eb;
    padding: 4px 12px;
    border-radius: 999px;
}

.research-impact__stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-bottom: 2rem;
}

@media (max-width: 991px) {
    .research-impact__stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 575px) {
    .research-impact__stats {
        grid-template-columns: 1fr;
    }
}

.research-impact__stat-card {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.research-impact__stat-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #6b7280;
    margin-bottom: 0.5rem;
}

.research-impact__stat-value-row {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.research-impact__stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: #1b254b;
    line-height: 1;
}

.research-impact__stat-trend {
    font-size: 0.78rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 999px;
}

.research-impact__stat-trend--up {
    background: #d1fae5;
    color: #065f46;
}

.research-impact__stat-trend--down {
    background: #fee2e2;
    color: #991b1b;
}

.research-impact__stat-trend--stable {
    background: #e5e7eb;
    color: #374151;
}

.research-impact__stat-sub {
    font-size: 0.8rem;
    color: #9ca3af;
    margin: 0;
}

.research-impact__charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

@media (max-width: 767px) {
    .research-impact__charts {
        grid-template-columns: 1fr;
    }
}

.research-impact__chart-card {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 1.75rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.research-impact__chart-title {
    font-size: 1rem;
    font-weight: 600;
    color: #1b254b;
    margin-bottom: 0.25rem;
}

.research-impact__chart-sub {
    font-size: 0.8rem;
    color: #9ca3af;
    margin-bottom: 1.25rem;
}

.research-impact__bar-chart {
    display: flex;
    align-items: flex-end;
    gap: 1.5rem;
    height: 160px;
    padding-top: 1rem;
}

.research-impact__bar-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
}

.research-impact__bar {
    width: 100%;
    border-radius: 6px 6px 0 0;
    min-height: 8px;
    transition: height 0.4s ease;
}

.research-impact__bar--journals {
    background: #1b254b;
}

.research-impact__bar--conferences {
    background: #74c0fc;
}

.research-impact__bar-label {
    font-size: 0.78rem;
    color: #6b7280;
    font-weight: 500;
}

.research-impact__donut-wrapper {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.research-impact__donut {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    flex-shrink: 0;
    -webkit-mask: radial-gradient(circle, transparent 40%, black 41%);
    mask: radial-gradient(circle, transparent 40%, black 41%);
}

.research-impact__legend {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.research-impact__legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.research-impact__legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.research-impact__legend-label {
    color: #374151;
    flex: 1;
}

.research-impact__legend-value {
    font-weight: 600;
    color: #1b254b;
}

/* ------------------------------------------------------------
   Quick Links Grid
   ------------------------------------------------------------ */
.quick-links {
    padding: 80px 0;
    background: #ffffff;
}

.quick-links__header {
    margin-bottom: 3rem;
}

.quick-links__title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    color: #1b254b;
    margin-bottom: 0.75rem;
}

.quick-links__subtitle {
    color: #6b7280;
    max-width: 40rem;
    margin: 0 auto;
}

.quick-links__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

@media (max-width: 991px) {
    .quick-links__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 575px) {
    .quick-links__grid {
        grid-template-columns: 1fr;
    }
}

.quick-links__card {
    display: flex;
    flex-direction: column;
    background: #f8fbff;
    padding: 2rem;
    border-radius: 1.5rem;
    border: 1px solid transparent;
    text-decoration: none;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
    cursor: pointer;
}

.quick-links__card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    border-color: #e5e7eb;
}

.quick-links__icon-wrap {
    width: 3.5rem;
    height: 3.5rem;
    background: #ffffff;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: #1b254b;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s ease;
}

.quick-links__card:hover .quick-links__icon-wrap {
    transform: scale(1.1);
}

.quick-links__card-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: #1b254b;
    margin-bottom: 0.75rem;
}

.quick-links__card-desc {
    font-size: 0.875rem;
    color: #6b7280;
    line-height: 1.6;
    flex: 1;
    margin-bottom: 1.5rem;
}

.quick-links__card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.quick-links__cta {
    font-size: 0.875rem;
    font-weight: 500;
    color: #1b254b;
}

.quick-links__arrow {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: #1b254b;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.quick-links__card:hover .quick-links__arrow {
    opacity: 1;
}