/* Research repository landing page — flat academic/collegiate style */

.research-landing {
    min-height: calc(100svh - var(--header-offset));
    padding: 40px clamp(16px, 3vw, 40px) 52px;
    background: var(--clr-navy);
    color: var(--clr-on-navy);
}

.research-hero,
.strand-section,
.papers-section,
.quick-links-section {
    width: min(1180px, 100%);
    margin-inline: auto;
}

.glass-panel {
    background: var(--clr-navy-soft);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
}

.research-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(240px, 0.85fr);
    gap: clamp(18px, 3vw, 34px);
    padding: clamp(24px, 4vw, 40px);
}

.research-hero-copy h1 {
    font-family: var(--font-serif);
    font-size: clamp(2.2rem, 4.6vw, 3.8rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.01em;
    margin: 10px 0 16px;
    max-width: 14ch;
    color: #ffffff;
}

.eyebrow,
.section-kicker {
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.74rem;
    font-weight: 700;
    color: var(--clr-green);
}

.hero-description {
    max-width: 62ch;
    color: rgba(247, 248, 244, 0.82);
    font-size: clamp(1rem, 1.5vw, 1.12rem);
    line-height: 1.7;
}

.hero-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
}

.hero-action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}

.hero-primary-link,
.hero-secondary-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 20px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 700;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.hero-primary-link {
    color: #fff;
    background: var(--clr-green);
}

.hero-primary-link:hover {
    background: var(--clr-green-dk);
}

.hero-secondary-link {
    color: #ffffff;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.hero-secondary-link:hover {
    border-color: #ffffff;
}

.hero-pills a,
.paper-actions a {
    text-decoration: none;
    font-weight: 600;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.hero-pills a {
    padding: 9px 14px;
    border-radius: var(--radius-sm);
    background: transparent;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-pills a:hover,
.paper-actions a:hover {
    border-color: var(--clr-green);
    color: var(--clr-green);
}

.strand-card:hover,
.quick-link-card:hover {
    border-color: var(--clr-green);
}

.research-hero-aside {
    display: grid;
    gap: 12px;
    align-content: center;
}

.hero-feature-card {
    padding: 22px 22px 20px;
    border-radius: var(--radius-lg);
    background: var(--clr-navy-soft);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--clr-on-navy);
}

.hero-feature-label {
    display: inline-flex;
    align-items: center;
    margin-bottom: 12px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    background: rgba(47, 143, 78, 0.22);
    color: #7fd39a;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.hero-feature-card strong {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.15rem;
    line-height: 1.4;
    margin-bottom: 10px;
}

.hero-feature-card p {
    color: rgba(247, 248, 244, 0.75);
    line-height: 1.65;
}

.hero-stat-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.hero-stat {
    padding: 16px 16px 18px;
    border-radius: var(--radius-md);
    background: var(--clr-paper-alt);
    border: 1px solid var(--clr-line);
}

.stat-label {
    display: block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--clr-ink-soft);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.hero-stat strong {
    display: block;
    font-size: 1rem;
    line-height: 1.4;
    color: var(--clr-heading);
}

.strand-section,
.papers-section,
.quick-links-section {
    margin-top: 36px;
}

.section-heading {
    margin-bottom: 18px;
}

.section-heading h2 {
    font-family: var(--font-serif);
    font-size: clamp(1.35rem, 2.5vw, 2rem);
    font-weight: 700;
    line-height: 1.2;
    color: #ffffff;
    margin-top: 6px;
    max-width: 26ch;
}

.section-heading.compact h2 {
    max-width: 32ch;
}

.strand-grid,
.paper-grid,
.quick-links-grid {
    display: grid;
    gap: 16px;
}

.strand-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.strand-card {
    text-decoration: none;
    color: var(--clr-ink);
    background: var(--clr-paper-alt);
    border: 1px solid var(--clr-line);
    border-radius: var(--radius-lg);
    padding: 24px 22px;
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 10px;
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.strand-icon {
    width: 46px;
    height: 46px;
    border-radius: var(--radius-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--clr-green-dk);
    background: var(--clr-green-soft);
}

.strand-title {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 700;
}

.strand-copy {
    color: var(--clr-ink-soft);
    line-height: 1.6;
}

.paper-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.paper-card {
    background: var(--clr-paper-alt);
    border: 1px solid var(--clr-line);
    border-radius: var(--radius-lg);
    padding: 22px;
}

.paper-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 14px;
}

.paper-badge,
.paper-type {
    display: inline-flex;
    align-items: center;
    border-radius: var(--radius-sm);
    padding: 6px 11px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.paper-badge {
    background: var(--clr-green-soft);
    color: var(--clr-green-dk);
}

.paper-type {
    background: rgba(11, 31, 51, 0.06);
    color: var(--clr-heading);
}

.paper-card h3 {
    font-family: var(--font-serif);
    font-size: 1.12rem;
    font-weight: 700;
    line-height: 1.35;
    color: var(--clr-ink);
    margin-bottom: 12px;
}

.paper-card p {
    color: var(--clr-ink-soft);
    line-height: 1.7;
}

.paper-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.paper-actions a {
    padding: 9px 14px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid var(--clr-line);
    color: var(--clr-ink);
}

.quick-links-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.quick-link-card {
    text-decoration: none;
    color: var(--clr-ink);
    background: var(--clr-paper-alt);
    border: 1px solid var(--clr-line);
    border-radius: var(--radius-md);
    padding: 18px 16px;
    min-height: 104px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    transition: border-color 0.15s ease;
}

.quick-link-card i {
    font-size: 1.1rem;
    color: var(--clr-green-dk);
}

.quick-link-card span {
    font-weight: 700;
}

body.compact-laptop .research-landing {
    padding-top: 24px;
}

body.compact-laptop .research-hero,
body.compact-laptop .strand-section,
body.compact-laptop .papers-section,
body.compact-laptop .quick-links-section {
    width: min(1080px, 100%);
}

@media (max-width: 1080px) {

    .research-hero,
    .paper-grid,
    .quick-links-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero-stat-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .research-landing {
        padding: 24px 14px 36px;
    }

    .research-hero,
    .paper-grid,
    .quick-links-grid {
        grid-template-columns: 1fr;
    }

    .research-hero {
        padding: 22px;
    }

    .hero-action-row,
    .hero-pills,
    .paper-actions {
        gap: 10px;
    }

    .paper-card,
    .strand-card {
        padding: 20px;
    }

    .quick-links-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .quick-links-grid {
        grid-template-columns: 1fr;
    }

    .hero-pills a,
    .paper-actions a {
        width: 100%;
        justify-content: center;
        text-align: center;
    }
}