/* ============================================

   RESEARCH & PUBLICATIONS — researchcse.css

   MZCET | Department of CSE

   Header/Nav: Faculty List exact copy

============================================ */



/* ============================================

   CSS VARIABLES & RESET

============================================ */

:root {

    /* Faculty List core palette */

    --primary:    #002472;

    --secondary:  #020c56;

    --gold:       #d4a574;



    /* Research page aliases */

    --blue:              #002472;

    --secondary-brown:   #020c56;

    --accent-gold:       #d4a574;

    --accent-gold-light: rgba(212, 165, 116, 0.15);

    --accent-gold-mid:   rgba(212, 165, 116, 0.3);

    --text-dark:         #333333;

    --text-light:        #666666;

    --bg-light:          #f8f9fa;

    --white:             #ffffff;

    --shadow:            0 4px 20px rgba(0,0,0,0.1);

    --shadow-lg:         0 10px 40px rgba(0,0,0,0.15);

    --transition:        all 0.3s cubic-bezier(0.4,0,0.2,1);

    --border:            rgba(0,36,114,0.1);

    --card-radius:       20px;

    --ease:              all 0.3s cubic-bezier(0.4,0,0.2,1);



    /* Faculty List fixed-header heights */

    --topbar-h:  40px;

    --header-h:  110px;

    --nav-h:     50px;

    --fixed-top: calc(var(--topbar-h) + var(--header-h) + var(--nav-h));

}



* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }



body {

    font-family: 'Poppins', sans-serif;

    color: var(--text-dark);

    background: var(--bg-light);

    overflow-x: hidden;

    /* push content below fixed header stack — Faculty List pattern */

    padding-top: var(--fixed-top);

}



/* Faculty List utility wrappers */

.container-fluid { width: 100%; padding: 0 2rem; max-width: 1920px; margin: 0 auto; }

.container       { max-width: 1300px; margin: 0 auto; padding: 0 2rem; }



/* ============================================

   TOP BAR — Faculty List exact copy

============================================ */

.top-bar {

    position: fixed;

    top: 0; left: 0; right: 0;

    height: var(--topbar-h);

    background: var(--secondary);

    color: var(--white);

    display: flex;

    align-items: center;

    font-size: 0.8rem;

    z-index: 1003;

}

.top-bar-content {

    display: flex;

    justify-content: space-between;

    align-items: center;

    width: 100%;

    height: 100%;

}

.top-bar-left  { display: flex; align-items: center; gap: 2rem; }

.top-bar-info  { display: flex; align-items: center; gap: 0.4rem; }

.top-bar-info i { color: var(--gold); font-size: 0.72rem; }

.email-link    { color: var(--white); text-decoration: none; }



/* ============================================

   HEADER — Faculty List exact copy

============================================ */

.header {

    position: fixed;

    top: var(--topbar-h); left: 0; right: 0;

    height: var(--header-h);

    background: var(--white);

    z-index: 1002;

    display: flex;

    align-items: center;

    box-shadow: 0 2px 12px rgba(0,36,114,0.06);

}

.header-content {

    display: flex;

    align-items: center;

    gap: 1.4rem;

    width: 100%;

    height: 100%;

}



/* Logo */

.header-logo {

    flex-shrink: 0;

    display: flex;

    align-items: center;

    justify-content: center;

}

.header-logo img {

    height: 82px;

    width: auto;

    object-fit: contain;

    border-radius: 8px;

    display: block;

}

.header-logo-fallback {

    width: 82px; height: 82px;

    background: linear-gradient(135deg, var(--primary) 0%, #1a4db8 100%);

    border-radius: 12px;

    display: flex; align-items: center; justify-content: center;

    font-size: 1.7rem; font-weight: 800; color: var(--white);

    letter-spacing: -1px; flex-shrink: 0;

    box-shadow: 0 4px 16px rgba(0,36,114,0.4);

    user-select: none;

    border: 2px solid rgba(212,165,116,0.5);

}



/* Divider */

.header-divider {

    width: 2px; height: 62px;

    background: linear-gradient(to bottom, transparent, var(--gold), transparent);

    flex-shrink: 0;

    opacity: 0.5;

}



/* Text */

.header-text {

    flex: 1;

    min-width: 0;

    display: flex;

    flex-direction: column;

    justify-content: center;

}

.header-text h1 {

    font-family: 'Cooper Black', 'Georgia', serif;

    font-size: clamp(1.08rem, 1.9vw, 1.45rem);

    color: var(--primary);

    font-weight: 900;

    margin-bottom: 2px;

    line-height: 1.2;

    white-space: nowrap;

    overflow: hidden;

    text-overflow: ellipsis;

    letter-spacing: 0.06em;

}

.header-subtitle {

    font-size: clamp(0.68rem, 0.9vw, 0.78rem);

    color: var(--primary);

    font-weight: 600;

    margin-bottom: 1px;

    font-style: italic;

    line-height: 1.3;

    letter-spacing: 0.05em;

}

.header-info {

    font-size: clamp(0.62rem, 0.8vw, 0.72rem);

    color: var(--primary);

    line-height: 1.3;

    font-weight: 600;

    letter-spacing: 0.05em;

}



/* ============================================

   MOBILE OVERLAY — Faculty List exact copy

============================================ */

.nav-overlay {

    display: none;

    position: fixed; inset: 0;

    background: rgba(0,0,0,0.5);

    z-index: 998;

}

.nav-overlay.active { display: block; }



/* ============================================

   NAVBAR — Faculty List exact copy

============================================ */

.navbar {

    position: fixed;

    top: calc(var(--topbar-h) + var(--header-h));

    left: 0; right: 0;

    height: var(--nav-h);

    background: var(--primary);

    box-shadow: 0 3px 14px rgba(0,0,0,0.3);

    z-index: 1001;

}

.nav-container {

    display: flex;

    align-items: center;

    justify-content: center;

    height: 100%;

    width: 100%;

    max-width: 1920px;

    margin: 0 auto;

    padding: 0;

}

.nav-links {

    display: flex;

    list-style: none;

    gap: 0;

    margin: 0; padding: 0;

    justify-content: center;

    align-items: stretch;

    height: 100%;

}

.nav-item {

    position: relative;

    display: flex;

    align-items: stretch;

    height: 100%;

}

.nav-item a {

    display: flex;

    align-items: center;

    justify-content: center;

    gap: 0.42rem;

    height: 100%;

    padding: 0 1.3rem;

    text-decoration: none;

    color: rgba(255,255,255,0.88);

    font-weight: 500;

    font-size: 0.87rem;

    line-height: var(--nav-h);

    transition: var(--ease);

    border-right: 1px solid rgba(255,255,255,0.1);

    white-space: nowrap;

}

.nav-item:first-child a {

    border-left: 1px solid rgba(255,255,255,0.1);

}

.nav-item a:hover,

.nav-item a.active {

    background: rgba(255,255,255,0.13);

    color: var(--gold);

}

.nav-icon {

    font-size: 0.82rem;

    flex-shrink: 0;

    display: flex;

    align-items: center;

    justify-content: center;

    line-height: 1;

}



/* Hamburger — Faculty List exact copy */

.hamburger {

    display: none;

    flex-direction: column;

    cursor: pointer;

    gap: 5px;

    padding: 0.6rem 0.75rem;

    position: absolute;

    right: 1rem;

    top: 50%;

    transform: translateY(-50%);

    background: var(--primary);

    border: none;

    border-radius: 8px;

    z-index: 10;

    box-shadow: 0 2px 10px rgba(0,36,114,0.35);

}

.hamburger span {

    display: block;

    width: 23px; height: 2.5px;

    background: var(--white);

    border-radius: 3px;

    transition: var(--ease);

}

.hamburger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }

.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }

.hamburger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }



/* ============================================

   BREADCRUMB

============================================ */

.breadcrumb-bar {

    background: var(--white);

    padding: 0.9rem 0;

    border-bottom: 1px solid var(--border);

}

.breadcrumb-inner {

    display: flex;

    align-items: center;

    gap: 0.6rem;

    font-size: 0.82rem;

}

.breadcrumb-inner a {

    color: var(--text-light);

    text-decoration: none;

    display: flex;

    align-items: center;

    gap: 0.4rem;

    transition: var(--transition);

}

.breadcrumb-inner a:hover { color: var(--blue); }

.breadcrumb-inner .sep { color: var(--border); font-size: 0.7rem; }

.breadcrumb-inner .active { color: var(--accent-gold); font-weight: 600; }



/* ============================================

   HERO SECTION

============================================ */

.research-hero {

    background: linear-gradient(135deg, var(--blue) 0%, var(--secondary-brown) 60%, #0a1875 100%);

    padding: 5rem 0 4rem;

    position: relative;

    overflow: hidden;

}

.research-hero::before {

    content: '';

    position: absolute;

    inset: 0;

    background-image:

        linear-gradient(rgba(212,165,116,0.05) 1px, transparent 1px),

        linear-gradient(90deg, rgba(212,165,116,0.05) 1px, transparent 1px);

    background-size: 60px 60px;

}

.hero-orb {

    position: absolute;

    border-radius: 50%;

    filter: blur(80px);

    pointer-events: none;

}

.hero-orb-1 {

    width: 500px; height: 500px;

    background: rgba(212,165,116,0.08);

    top: -150px; right: -100px;

}

.hero-orb-2 {

    width: 300px; height: 300px;

    background: rgba(255,255,255,0.04);

    bottom: -100px; left: 10%;

}

.hero-content {

    position: relative;

    z-index: 2;

    display: grid;

    grid-template-columns: 1fr auto;

    gap: 3rem;

    align-items: center;

}

.hero-label {

    display: inline-flex;

    align-items: center;

    gap: 0.6rem;

    background: var(--accent-gold-light);

    border: 1px solid var(--accent-gold-mid);

    color: var(--accent-gold);

    font-size: 0.78rem;

    font-weight: 600;

    padding: 0.5rem 1.2rem;

    border-radius: 50px;

    text-transform: uppercase;

    letter-spacing: 1.5px;

    margin-bottom: 1.5rem;

    animation: fadeInUp 0.6s ease-out backwards;

}

.hero-title {

    font-family: 'Poppins', sans-serif;

    font-size: 3.8rem;

    font-weight: 900;

    color: var(--white);

    line-height: 1.05;

    margin-bottom: 1.2rem;

    animation: fadeInUp 0.6s ease-out 0.1s backwards;

}

.hero-title span { color: var(--accent-gold); display: block; }

.hero-desc {

    font-size: 1rem;

    color: rgba(255,255,255,0.75);

    line-height: 1.8;

    max-width: 540px;

    font-weight: 400;

    animation: fadeInUp 0.6s ease-out 0.2s backwards;

}



/* Stats Panel */

.stats-panel {

    display: grid;

    grid-template-rows: repeat(3, 1fr);

    gap: 1px;

    background: rgba(255,255,255,0.1);

    border-radius: 20px;

    overflow: hidden;

    border: 1px solid rgba(255,255,255,0.15);

    min-width: 220px;

    animation: fadeInUp 0.6s ease-out 0.3s backwards;

}

.stat-item {

    background: rgba(255,255,255,0.06);

    padding: 1.5rem 2rem;

    text-align: center;

    transition: var(--transition);

    backdrop-filter: blur(10px);

}

.stat-item:hover { background: rgba(212,165,116,0.15); }

.stat-num {

    font-family: 'Poppins', sans-serif;

    font-size: 2.2rem;

    font-weight: 900;

    color: var(--accent-gold);

    line-height: 1;

    margin-bottom: 0.3rem;

}

.stat-lbl {

    font-size: 0.75rem;

    font-weight: 500;

    color: rgba(255,255,255,0.7);

    text-transform: uppercase;

    letter-spacing: 1px;

}



/* ============================================

   PUBLICATIONS SECTION

============================================ */

.publications-section {

    padding: 4rem 0 6rem;

    background: var(--bg-light);

}

.section-header {

    display: flex;

    align-items: center;

    gap: 1rem;

    margin-bottom: 2.5rem;

}

.section-pill {

    display: inline-flex;

    align-items: center;

    gap: 0.5rem;

    background: var(--blue);

    color: var(--white);

    font-size: 0.75rem;

    font-weight: 600;

    padding: 0.4rem 1rem;

    border-radius: 50px;

    text-transform: uppercase;

    letter-spacing: 1px;

}

.section-title {

    font-family: 'Poppins', sans-serif;

    font-size: 1.8rem;

    font-weight: 900;

    color: var(--blue);

}

.pubs-grid {

    display: grid;

    grid-template-columns: repeat(auto-fill, minmax(390px, 1fr));

    gap: 2rem;

}



/* ============================================

   PUBLICATION CARD

============================================ */

.pub-card {

    background: var(--white);

    border-radius: var(--card-radius);

    border: 1px solid rgba(0,36,114,0.07);

    overflow: hidden;

    transition: var(--transition);

    position: relative;

    display: flex;

    flex-direction: column;

    animation: fadeInUp 0.5s ease-out backwards;

}

.pub-card::before {

    content: '';

    position: absolute;

    top: 0; left: 0; right: 0;

    height: 4px;

    background: linear-gradient(90deg, var(--blue), var(--accent-gold));

    transform: scaleX(0);

    transform-origin: left;

    transition: transform 0.4s ease;

}

.pub-card:hover {

    transform: translateY(-6px);

    box-shadow: var(--shadow-lg);

    border-color: rgba(0,36,114,0.15);

}

.pub-card:hover::before { transform: scaleX(1); }

.pub-card-top {

    display: flex;

    justify-content: space-between;

    align-items: center;

    padding: 1.4rem 1.8rem 0;

}

.pub-index {

    font-family: 'Poppins', sans-serif;

    font-size: 3rem;

    font-weight: 900;

    color: var(--blue);

    opacity: 0.08;

    line-height: 1;

    user-select: none;

}

.pub-year-badge {

    display: inline-flex;

    align-items: center;

    gap: 0.4rem;

    background: var(--blue);

    color: var(--white);

    font-size: 0.75rem;

    font-weight: 600;

    padding: 0.4rem 1rem;

    border-radius: 50px;

}

.pub-year-badge i { font-size: 0.7rem; color: var(--accent-gold); }

.pub-card-body { padding: 1rem 1.8rem 1.4rem; flex: 1; }

.pub-title {

    font-family: 'Poppins', sans-serif;

    font-size: 1.02rem;

    font-weight: 700;

    color: var(--text-dark);

    line-height: 1.5;

    margin-bottom: 1.2rem;

    display: -webkit-box;

    -webkit-line-clamp: 3;

    -webkit-box-orient: vertical;

    overflow: hidden;

}

.pub-meta { display: flex; flex-direction: column; gap: 0.7rem; }

.meta-row { display: flex; align-items: flex-start; gap: 0.7rem; font-size: 0.83rem; }

.meta-icon {

    width: 28px; height: 28px;

    background: var(--accent-gold-light);

    border-radius: 8px;

    display: flex; align-items: center; justify-content: center;

    flex-shrink: 0;

}

.meta-icon i { font-size: 0.75rem; color: var(--accent-gold); }

.meta-content { flex: 1; }

.meta-label {

    font-size: 0.7rem;

    font-weight: 600;

    color: var(--text-light);

    text-transform: uppercase;

    letter-spacing: 0.8px;

    line-height: 1;

    margin-bottom: 0.15rem;

}

.meta-value { font-size: 0.83rem; font-weight: 500; color: var(--text-dark); line-height: 1.4; }

.meta-value.mono { font-size: 0.78rem; color: var(--text-light); }

.pub-divider { height: 1px; background: var(--border); margin: 0 1.8rem; }

.pub-card-footer {

    padding: 1.2rem 1.8rem;

    display: flex;

    justify-content: space-between;

    align-items: center;

    gap: 1rem;

}

.tag-list { display: flex; gap: 0.5rem; flex-wrap: wrap; flex: 1; }

.tag {

    padding: 0.3rem 0.8rem;

    background: rgba(0,36,114,0.06);

    color: var(--blue);

    border-radius: 6px;

    font-size: 0.72rem;

    font-weight: 600;

    text-transform: uppercase;

    letter-spacing: 0.5px;

    cursor: pointer;

    transition: var(--transition);

    border: 1px solid rgba(0,36,114,0.08);

}

.tag:hover { background: var(--blue); color: var(--white); border-color: var(--blue); }

.btn-view {

    display: flex;

    align-items: center;

    gap: 0.5rem;

    padding: 0.65rem 1.3rem;

    background: linear-gradient(135deg, var(--blue), var(--secondary-brown));

    color: var(--white);

    border: none;

    border-radius: 10px;

    font-family: 'Poppins', sans-serif;

    font-size: 0.82rem;

    font-weight: 600;

    cursor: pointer;

    transition: var(--transition);

    white-space: nowrap;

}

.btn-view:hover { background: linear-gradient(135deg, var(--accent-gold), #c4945a); transform: translateX(2px); }

.btn-view i { font-size: 0.75rem; transition: transform 0.3s ease; }

.btn-view:hover i { transform: translateX(4px); }



/* ============================================

   NO RESULTS

============================================ */

.no-results { text-align: center; padding: 5rem 2rem; display: none; }

.no-results-icon {

    width: 80px; height: 80px;

    background: var(--accent-gold-light);

    border-radius: 50%;

    display: flex; align-items: center; justify-content: center;

    margin: 0 auto 1.5rem;

}

.no-results-icon i { font-size: 2rem; color: var(--accent-gold); }

.no-results h3 { font-family: 'Poppins', sans-serif; font-size: 1.5rem; color: var(--blue); margin-bottom: 0.5rem; }

.no-results p  { color: var(--text-light); font-size: 0.95rem; }



/* ============================================

   MODAL

============================================ */

.modal-overlay {

    display: none;

    position: fixed; inset: 0;

    background: rgba(2,12,86,0.6);

    z-index: 9999;

    backdrop-filter: blur(6px);

    align-items: center;

    justify-content: center;

    padding: 2rem;

}

.modal-overlay.open { display: flex; }

.modal-box {

    background: var(--white);

    border-radius: 24px;

    max-width: 600px; width: 100%;

    overflow: hidden;

    box-shadow: 0 30px 80px rgba(0,0,0,0.25);

    animation: modalIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);

}

@keyframes modalIn {

    from { transform: scale(0.85) translateY(30px); opacity: 0; }

    to   { transform: scale(1)    translateY(0);    opacity: 1; }

}

.modal-header {

    background: linear-gradient(135deg, var(--blue), var(--secondary-brown));

    padding: 2rem; position: relative;

}

.modal-number {

    font-family: 'Poppins', sans-serif;

    font-size: 5rem; font-weight: 900;

    color: rgba(255,255,255,0.06);

    position: absolute; top: -10px; right: 1.5rem;

    line-height: 1; user-select: none;

}

.modal-year-badge {

    display: inline-flex; align-items: center; gap: 0.4rem;

    background: rgba(212,165,116,0.2);

    border: 1px solid rgba(212,165,116,0.3);

    color: var(--accent-gold);

    font-size: 0.75rem; font-weight: 600;

    padding: 0.35rem 0.9rem; border-radius: 50px; margin-bottom: 1rem;

}

.modal-title { font-size: 1.1rem; font-weight: 700; color: var(--white); line-height: 1.5; position: relative; z-index: 1; }

.modal-close {

    position: absolute; top: 1.2rem; right: 1.2rem;

    width: 36px; height: 36px;

    background: rgba(255,255,255,0.1);

    border: none; border-radius: 10px;

    color: var(--white); font-size: 1rem; cursor: pointer;

    display: flex; align-items: center; justify-content: center;

    transition: var(--transition);

}

.modal-close:hover { background: rgba(255,255,255,0.2); }

.modal-body { padding: 2rem; }

.modal-detail-row {

    display: flex; align-items: flex-start; gap: 1rem;

    padding: 1rem 0; border-bottom: 1px solid var(--border);

}

.modal-detail-row:last-child { border-bottom: none; }

.modal-detail-icon {

    width: 36px; height: 36px;

    background: rgba(0,36,114,0.06); border-radius: 10px;

    display: flex; align-items: center; justify-content: center; flex-shrink: 0;

}

.modal-detail-icon i { font-size: 0.9rem; color: var(--blue); }

.modal-detail-label {

    font-size: 0.72rem; font-weight: 600; color: var(--text-light);

    text-transform: uppercase; letter-spacing: 1px; margin-bottom: 0.2rem;

}

.modal-detail-value { font-size: 0.9rem; font-weight: 500; color: var(--text-dark); line-height: 1.5; }

.modal-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1.2rem; }

.modal-tag {

    padding: 0.4rem 1rem;

    background: rgba(0,36,114,0.06); color: var(--blue);

    border-radius: 8px; font-size: 0.78rem; font-weight: 600;

    text-transform: uppercase; letter-spacing: 0.5px;

}



/* ============================================

   FOOTER

============================================ */

.site-footer { background: var(--secondary-brown); padding: 4rem 0 0; }

.footer-grid {

    display: grid; grid-template-columns: repeat(4, 1fr);

    gap: 3rem; padding-bottom: 3rem;

    border-bottom: 1px solid rgba(255,255,255,0.08);

}

.footer-heading {

    font-family: 'Poppins', sans-serif;

    font-size: 1rem; color: var(--accent-gold);

    margin-bottom: 1.2rem; position: relative; padding-bottom: 0.8rem;

}

.footer-heading::after {

    content: ''; position: absolute;

    bottom: 0; left: 0; width: 30px; height: 2px;

    background: var(--accent-gold); border-radius: 2px;

}

.footer-list { list-style: none; display: flex; flex-direction: column; gap: 0.7rem; }

.footer-list li {

    display: flex; align-items: flex-start; gap: 0.6rem;

    font-size: 0.83rem; color: rgba(255,255,255,0.65); line-height: 1.5;

}

.footer-list li i { font-size: 0.75rem; color: var(--accent-gold); margin-top: 0.2rem; flex-shrink: 0; }

.footer-list a { color: rgba(255,255,255,0.65); text-decoration: none; transition: var(--transition); font-size: 0.83rem; }

.footer-list a:hover { color: var(--accent-gold); }

.footer-bottom { padding: 1.5rem 0; text-align: center; }

.footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.45); margin-bottom: 0.3rem; }

.footer-bottom a { color: var(--accent-gold); text-decoration: none; }



/* ============================================

   SCROLL TO TOP

============================================ */

.scroll-top {

    position: fixed; bottom: 2rem; right: 2rem;

    width: 46px; height: 46px;

    background: var(--blue); color: var(--white);

    border: none; border-radius: 12px;

    font-size: 1rem; cursor: pointer;

    box-shadow: var(--shadow-lg); transition: var(--transition);

    opacity: 0; pointer-events: none; z-index: 999;

    display: flex; align-items: center; justify-content: center;

}

.scroll-top.show { opacity: 1; pointer-events: all; }

.scroll-top:hover { background: var(--accent-gold); transform: translateY(-3px); }



/* ============================================

   ANIMATIONS

============================================ */

@keyframes fadeInUp {

    from { opacity: 0; transform: translateY(24px); }

    to   { opacity: 1; transform: translateY(0); }

}

.pub-card:nth-child(1)  { animation-delay: 0.05s; }

.pub-card:nth-child(2)  { animation-delay: 0.10s; }

.pub-card:nth-child(3)  { animation-delay: 0.15s; }

.pub-card:nth-child(4)  { animation-delay: 0.20s; }

.pub-card:nth-child(5)  { animation-delay: 0.25s; }

.pub-card:nth-child(6)  { animation-delay: 0.30s; }

.pub-card:nth-child(7)  { animation-delay: 0.35s; }

.pub-card:nth-child(8)  { animation-delay: 0.40s; }

.pub-card:nth-child(9)  { animation-delay: 0.45s; }

.pub-card:nth-child(10) { animation-delay: 0.50s; }



/* ============================================

   RESPONSIVE ≤1024px

============================================ */

@media (max-width: 1024px) {

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

    .stats-panel {

        grid-template-rows: 1fr;

        grid-template-columns: repeat(3, 1fr);

        min-width: unset;

    }

    .hero-title { font-size: 3rem; }

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

}



/* ============================================

   RESPONSIVE ≤768px — Faculty List mobile pattern

============================================ */

@media (max-width: 768px) {



    /* Recalculate header heights — Faculty List exact */

    :root {

        --topbar-h:  0px;

        --header-h:  80px;

        --nav-h:     50px;

        --fixed-top: calc(var(--header-h) + var(--nav-h));

    }



    body { padding-top: var(--fixed-top); }



    /* Hide top bar */

    .top-bar { display: none; }



    /* Header sits at very top */

    .header { top: 0; }



    /* Navbar below header */

    .navbar { top: var(--header-h); }



    /* Header compact */

    .header-logo img,

    .header-logo-fallback { height: 56px; width: 56px; font-size: 1.2rem; border-radius: 9px; }

    .header-divider { height: 40px; }

    .header-info    { display: none; }

    .header-text h1 { font-size: clamp(0.82rem, 3.5vw, 1.1rem); white-space: normal; }

    .header-subtitle { font-size: 0.76rem; }



    /* Hamburger visible */

    .hamburger { display: flex; }



    /* Nav becomes slide-in drawer — Faculty List exact */

    .nav-links {

        position: fixed;

        top: 0; right: -100%;

        width: min(72vw, 280px);

        height: 100vh;

        background: var(--primary);

        flex-direction: column;

        padding: 4.5rem 0 2rem;

        box-shadow: var(--shadow-lg);

        transition: right 0.32s cubic-bezier(0.4,0,0.2,1);

        overflow-y: auto;

        z-index: 999;

        gap: 0;

        justify-content: flex-start;

        align-items: stretch;

    }

    .nav-links.active { right: 0; }

    .nav-item { height: auto; }

    .nav-item a {

        height: auto;

        padding: 0.9rem 1.5rem;

        border-right: none;

        border-bottom: 1px solid rgba(255,255,255,0.08);

        font-size: 0.92rem;

        line-height: 1.4;

        justify-content: flex-start;

    }

    .nav-item:first-child a { border-left: none; }



    

    /* Research content */

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

    .hero-title     { font-size: 2.4rem; }

    .stats-panel    { grid-template-columns: 1fr; }

}



/* ============================================

   RESPONSIVE ≤480px

============================================ */

@media (max-width: 480px) {

    .header-content  { gap: 0.7rem; }

    .header-text h1  { font-size: 0.8rem; }

    .header-subtitle { font-size: 0.7rem; }

    .hero-title      { font-size: 2rem; }

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

    .pub-card-footer { flex-direction: column; align-items: stretch; }

    .btn-view        { justify-content: center; }

}



/* ============================================

   RESPONSIVE ≤380px

============================================ */

@media (max-width: 380px) {

    .header-logo img,

    .header-logo-fallback { width: 40px; height: 40px; }

    .header-divider { display: none; }

    .header-text h1 { font-size: 0.65rem; letter-spacing: 0.02em; }

}