/* ==========================================================================
   Kishoreganj University — Single publication  (/research/{slug})

   Scoped entirely under .kiu-publication-page so nothing leaks into other pages.
   main.css sets `html { font-size: 10px }`, so 1rem = 10px sitewide —
   every size below is declared in explicit px. Do not reintroduce rem here.
   ========================================================================== */

.kiu-publication-page {
    /* Palette — mirrors home.css so every page reads as one site. */

    /* Rhythm */
    --kiu-section-y: 104px;

    /* Top clearance for the fixed navbar + hanging badge logo. */
    --kiu-nav-clear: 190px; /* ~40px under the hanging badge — see components/page-hero.css */

    font-family: var(--rs-ff-body, "Inter", sans-serif);
    color: var(--kiu-body);
    background: var(--kiu-white);
}

.kiu-publication-page *,
.kiu-publication-page *::before,
.kiu-publication-page *::after {
    box-sizing: border-box;
}

/* Headings take their colour from a token, so dark sections flip them to white
   by redefining --kiu-heading rather than fighting this selector's specificity
   from a single-class rule. Same trap main.css sets on the home page. */
.kiu-publication-page h1,
.kiu-publication-page h2,
.kiu-publication-page h3 {
    font-family: var(--rs-ff-body, "Inter", sans-serif);
    color: var(--kiu-heading, var(--kiu-ink));
    margin: 0;
    letter-spacing: -.02em;
}

.kiu-publication-head {
    --kiu-heading: var(--kiu-white);
}

.kiu-publication-page p {
    margin: 0;
}

.kiu-publication-page a {
    text-decoration: none;
}

/* Zero-specificity reset for Bootstrap's blue link colour — as a plain
   `.kiu-publication-page a` rule it would outrank every single-class button rule and drag
   white button labels back to the grey body colour. */
:where(.kiu-publication-page a) {
    color: inherit;
}

.kiu-publication-page .kiu-section {
    padding-block: var(--kiu-section-y);
}

/* --------------------------------------------------------------------------
   Shared elements
   -------------------------------------------------------------------------- */

.kiu-publication-page .kiu-eyebrow {
    display: inline-block;
    margin-bottom: 14px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--kiu-navy);
}

.kiu-publication-page .kiu-eyebrow--accent {
    color: var(--kiu-accent);
}

.kiu-publication-page .kiu-section__head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 32px;
    margin-bottom: 48px;
}

.kiu-publication-page .kiu-section__title {
    font-size: clamp(30px, 3.4vw, 44px);
    font-weight: 700;
    line-height: 1.15;
}

.kiu-publication-page .kiu-section__lead {
    max-width: 46ch;
    font-size: 16px;
    line-height: 1.7;
    color: var(--kiu-body);
}

.kiu-publication-page .kiu-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 28px;
    border: 1px solid transparent;
    border-radius: var(--kiu-radius-pill);
    font-size: 14px;
    font-weight: 600;
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
    transition: background var(--kiu-dur) var(--kiu-ease-out), color var(--kiu-dur) var(--kiu-ease-out),
                border-color var(--kiu-dur) var(--kiu-ease-out), transform var(--kiu-dur) var(--kiu-ease-out);
}

.kiu-publication-page .kiu-btn--accent {
    background: var(--kiu-accent);
    color: var(--kiu-navy-darker);
}

.kiu-publication-page .kiu-btn--accent:hover {
    background: var(--kiu-accent-soft);
    transform: translateY(var(--kiu-lift));
}

.kiu-publication-page .kiu-btn--outline {
    border-color: var(--kiu-border);
    background: var(--kiu-white);
    color: var(--kiu-navy);
}

.kiu-publication-page .kiu-btn--outline:hover {
    border-color: var(--kiu-navy);
    background: var(--kiu-navy);
    color: var(--kiu-white);
    transform: translateY(var(--kiu-lift));
}

/* Scoped, so the pages cannot fight over a shared global rule. */
.kiu-publication-page .kiu-breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 13px;
    font-weight: 500;
    color: rgba(255, 255, 255, .72);
}

.kiu-publication-page .kiu-breadcrumb a:hover {
    color: var(--kiu-accent-soft);
}

.kiu-publication-page .kiu-breadcrumb [aria-current="page"] {
    color: var(--kiu-accent);
}

/* --------------------------------------------------------------------------
   Header band

   This page has no photographic hero, so the navy band carries the navbar
   clearance itself. See the note in classroom-lab.css for the measurements.
   -------------------------------------------------------------------------- */

.kiu-publication-head {
    padding-block: var(--kiu-nav-clear) 64px;
    background: linear-gradient(120deg, var(--kiu-navy-darker) 0%, var(--kiu-navy) 100%);
}

/* With an uploaded cover the photo shows through a navy wash, dark enough on
   the left for the white title to stay readable. */
.kiu-publication-head--cover {
    background:
        linear-gradient(100deg, rgba(13, 31, 60, .94) 0%, rgba(13, 31, 60, .82) 50%, rgba(13, 31, 60, .55) 100%),
        var(--kiu-publication-cover) center / cover no-repeat,
        var(--kiu-navy-darker);
}

.kiu-publication-head__type {
    display: inline-block;
    margin-bottom: 16px;
    padding: 7px 14px;
    border-radius: var(--kiu-radius-pill);
    background: rgba(0, 163, 147, .16);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--kiu-accent);
}

.kiu-publication-head__title {
    max-width: 26ch;
    font-size: clamp(28px, 3.6vw, 44px);
    font-weight: 700;
    line-height: 1.2;
}

.kiu-publication-head__authors {
    max-width: 60ch;
    margin-top: 18px;
    font-size: 16.5px;
    line-height: 1.7;
    color: rgba(255, 255, 255, .82);
}

/* --------------------------------------------------------------------------
   Abstract + details
   -------------------------------------------------------------------------- */

.kiu-publication-body__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
}

.kiu-publication-body__heading {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.3;
}

.kiu-publication-body__text {
    margin-top: 18px;
    margin-bottom: 32px;
    font-size: 16.5px;
    line-height: 1.85;
}

.kiu-publication-body__aside {
    padding: 32px;
    border: 1px solid var(--kiu-border);
    border-radius: var(--kiu-radius-lg);
    background: var(--kiu-surface);
    /* Clears the collapsed 76px navbar when the abstract runs long. */
    position: sticky;
    top: 104px;
}

.kiu-publication-aside__heading {
    padding-bottom: 18px;
    border-bottom: 1px solid var(--kiu-border);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
}

.kiu-publication-facts {
    margin: 0;
}

.kiu-publication-fact {
    padding: 18px 0;
    border-bottom: 1px solid var(--kiu-border);
}

.kiu-publication-fact:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.kiu-publication-fact dt {
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--kiu-muted);
}

.kiu-publication-fact dd {
    margin: 0;
    font-size: 15px;
    line-height: 1.65;
    color: var(--kiu-ink);
    /* DOIs and journal strings are long and unbroken. */
    overflow-wrap: anywhere;
}

.kiu-publication-fact dd a:hover {
    color: var(--kiu-navy);
    text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Previous / next
   -------------------------------------------------------------------------- */

.kiu-publication-nav {
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    gap: 20px;
    margin-top: 64px;
    padding-top: 32px;
    border-top: 1px solid var(--kiu-border);
}

.kiu-publication-nav__link {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    max-width: 46%;
    padding: 18px 22px;
    border: 1px solid var(--kiu-border);
    border-radius: var(--kiu-radius);
    background: var(--kiu-white);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.45;
    color: var(--kiu-ink);
    transition: border-color var(--kiu-dur) var(--kiu-ease-out), transform var(--kiu-dur) var(--kiu-ease-out), box-shadow var(--kiu-dur) var(--kiu-ease-out);
}

.kiu-publication-nav__link:hover {
    border-color: var(--kiu-navy);
    transform: translateY(var(--kiu-lift));
    box-shadow: var(--kiu-shadow);
}

.kiu-publication-nav__link--next {
    margin-left: auto;
    text-align: right;
}

.kiu-publication-nav__link small {
    display: block;
    margin-bottom: 4px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--kiu-muted);
}

.kiu-publication-nav__link i {
    flex-shrink: 0;
    font-size: 20px;
    color: var(--kiu-navy);
}

/* --------------------------------------------------------------------------
   Related
   -------------------------------------------------------------------------- */

.kiu-publication-related {
    background: var(--kiu-surface);
}

.kiu-publication-related__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.kiu-publication-related__card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 28px 26px;
    border: 1px solid var(--kiu-border);
    border-radius: var(--kiu-radius);
    background: var(--kiu-white);
    transition: transform var(--kiu-dur) var(--kiu-ease-out), box-shadow var(--kiu-dur) var(--kiu-ease-out);
}

.kiu-publication-related__card:hover {
    transform: translateY(var(--kiu-lift-lg));
    box-shadow: var(--kiu-shadow-hover);
}

.kiu-publication-related__type {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--kiu-accent);
}

.kiu-publication-related__title {
    font-size: 16.5px;
    font-weight: 700;
    line-height: 1.45;
    color: var(--kiu-ink);
}

.kiu-publication-related__authors {
    font-size: 14px;
    line-height: 1.6;
    color: var(--kiu-muted);
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1199px) {
    .kiu-publication-page {
        --kiu-section-y: 84px;
    }
}

@media (max-width: 991px) {
    .kiu-publication-page {
        --kiu-section-y: 72px;
    }

    .kiu-publication-page .kiu-section__head {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        margin-bottom: 36px;
    }

    .kiu-publication-body__grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 36px;
    }

    .kiu-publication-body__aside {
        position: static;
    }

    .kiu-publication-related__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 767px) {
    .kiu-publication-page {
        --kiu-section-y: 60px;
    }

    .kiu-publication-head {
        padding-block: var(--kiu-nav-clear) 48px;
    }

    .kiu-publication-nav {
        flex-direction: column;
    }

    .kiu-publication-nav__link {
        max-width: 100%;
    }

    .kiu-publication-nav__link--next {
        margin-left: 0;
        text-align: left;
        flex-direction: row-reverse;
        justify-content: flex-end;
    }

    .kiu-publication-related__grid {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 479px) {
    .kiu-publication-page .kiu-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 1340px) {
    .kiu-publication-page {
        --kiu-nav-clear: 178px;
    }
}

@media (max-width: 700px) {
    .kiu-publication-page {
        --kiu-nav-clear: 108px;
    }
}

/* --------------------------------------------------------------------------
   Motion preferences
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
    .kiu-publication-page *,
    .kiu-publication-page *::before,
    .kiu-publication-page *::after {
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
    }
}