/* 
====================================
  CEML Homepage Design System
====================================
*/

:root {
    /* Color Palette */
    --color-primary: #0A3D91;
    /* Yonsei standard blue-ish */
    --color-primary-light: #2c5ebb;
    --color-primary-dark: #052254;
    --color-accent: #00d2ff;

    --color-text-main: #1e293b;
    --color-text-muted: #64748b;
    --color-text-light: #f8fafc;

    --color-bg-main: #ffffff;
    --color-bg-alt: #f1f5f9;
    --color-bg-dark: #0f172a;

    --color-border: #e2e8f0;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: 'Inter', sans-serif;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-4: 1rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-24: 6rem;

    /* Border Radius & Shadows */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text-main);
    background-color: var(--color-bg-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-base);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Typography Classes */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-main);
    letter-spacing: -0.02em;
}

.body-lg {
    font-size: 1.125rem;
    line-height: 1.75;
    color: var(--color-text-muted);
}

.body-text {
    color: var(--color-text-muted);
}

/* Utilites */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

.section {
    padding: var(--spacing-24) 0;
}

.section-sm {
    padding: var(--spacing-8) 0;
}

.bg-light {
    background-color: var(--color-bg-alt);
}

.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: var(--spacing-4);
}

.mt-6 {
    margin-top: var(--spacing-6);
}

.mr-2 {
    margin-right: var(--spacing-2);
}

.mb-4 {
    margin-bottom: var(--spacing-4) !important;
}

.mb-6 {
    margin-bottom: var(--spacing-6) !important;
}

.mb-8 {
    margin-bottom: var(--spacing-8) !important;
}

.mb-12 {
    margin-bottom: var(--spacing-12) !important;
}

.pt-8 {
    padding-top: var(--spacing-8) !important;
}

.pt-12 {
    padding-top: var(--spacing-12) !important;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-base);
    padding: var(--spacing-4) 0;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-2) 0;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text-light);
    /* Light when transparent */
    letter-spacing: -0.03em;
    transition: color var(--transition-base);
}

.navbar.scrolled .logo-text {
    color: var(--color-primary);
}

.nav-links {
    display: none;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
        gap: var(--spacing-8);
    }
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    position: relative;
}

.navbar.scrolled .nav-link {
    color: var(--color-text-main);
}

.nav-link:hover {
    color: var(--color-accent);
}

.navbar.scrolled .nav-link:hover {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.navbar.scrolled .nav-link::after {
    background-color: var(--color-primary);
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: block;
    font-size: 1.5rem;
    color: var(--color-text-light);
    cursor: pointer;
}

.navbar.scrolled .mobile-menu-btn {
    color: var(--color-text-main);
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--color-bg-main);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-8);
}

.mobile-nav-link {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-main);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--color-text-light);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-light);
    border-color: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(4px);
}

.btn-secondary:hover {
    background-color: var(--color-text-light);
    color: var(--color-text-main);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    position: relative;
    padding: 120px 0 60px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Subtle gradient overlay on top of an unsplash academic/lab image */
    background: linear-gradient(to right, rgba(5, 34, 84, 0.9), rgba(5, 34, 84, 0.4)), url('https://images.unsplash.com/photo-1532094349884-543bc11b234d?q=80&w=2070&auto=format&fit=crop') center/cover no-repeat;
    z-index: 1;
    transform: scale(1.05);
    /* Slight scale for slow zoom animation if wanted */
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1280px;
    padding: 0 var(--spacing-6);
    margin: 0 auto;
    width: 100%;
    text-align: left;
}

.hero-badge {
    display: inline-block;
    padding: 0.25rem 1rem;
    background: rgba(0, 210, 255, 0.15);
    border: 1px solid rgba(0, 210, 255, 0.3);
    color: var(--color-accent);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-6);
}

.hero-title {
    color: var(--color-text-light);
    font-size: clamp(2rem, 3.5vw, 3rem);
    margin-bottom: var(--spacing-4);
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    margin-bottom: 0;
    max-width: 700px;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-8);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.mouse {
    width: 24px;
    height: 36px;
    border: 2px solid rgba(255, 255, 255, 0.7);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.wheel {
    width: 4px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 2px;
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% {
        transform: translateY(0);
        opacity: 1;
    }

    100% {
        transform: translateY(12px);
        opacity: 0;
    }
}

/* Generic Section Elements */
.section-title {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    margin-bottom: var(--spacing-4);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--spacing-12);
}

.layout-grid {
    display: grid;
    gap: var(--spacing-12);
}

@media (min-width: 992px) {
    .layout-2-col {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
}

/* About Section */
.highlight-box {
    background: var(--color-bg-alt);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-6);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: var(--spacing-6) 0;
    font-size: 1.125rem;
    color: var(--color-text-main);
}

.director-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.director-avatar {
    width: 64px;
    height: 64px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-primary);
}

.director-name {
    font-size: 1.25rem;
    margin-bottom: 2px;
}

.director-title {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.director-email {
    font-size: 0.875rem;
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-weight: 500;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
    position: relative;
}

.about-img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    object-fit: cover;
    height: 100%;
}

.img-1 {
    grid-column: 1 / 2;
    transform: translateY(20px);
}

.img-2 {
    grid-column: 2 / 3;
    transform: translateY(-20px);
}

/* Research Section */
.research-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
}

@media (max-width: 768px) {
    .research-grid {
        grid-template-columns: 1fr;
    }
}

.research-card {
    background: var(--color-bg-main);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.research-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.rc-image-wrapper {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.rc-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.research-card:hover .rc-img {
    transform: scale(1.05);
}

.rc-icon {
    position: absolute;
    bottom: -24px;
    right: 24px;
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: var(--color-text-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 10px rgba(10, 61, 145, 0.3);
    border: 4px solid var(--color-bg-main);
    z-index: 2;
}

.rc-content {
    padding: var(--spacing-8) var(--spacing-6) var(--spacing-6);
    flex-grow: 1;
}

.rc-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-2);
}

.rc-desc {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

/* Notice Section */
.notice-section {
    padding: var(--spacing-16) 0;
    position: relative;
}

.notice-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: var(--color-bg-alt);
    z-index: -1;
}

.notice-card {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    border-radius: var(--radius-xl);
    padding: var(--spacing-12);
    color: var(--color-text-light);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.notice-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 210, 255, 0.1) 0%, transparent 60%);
    border-radius: 50%;
    pointer-events: none;
}

.notice-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.notice-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-4);
}

.notice-title {
    color: var(--color-text-light);
    font-size: clamp(2rem, 3vw, 2.5rem);
    margin-bottom: var(--spacing-4);
}

.notice-text {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-6);
}

.notice-card .btn-primary {
    background: white;
    color: var(--color-primary-dark);
}

.notice-card .btn-primary:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

/* Footer */
.footer {
    background: var(--color-bg-dark);
    color: var(--color-text-light);
    padding-top: var(--spacing-16);
    margin-top: auto;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-12);
}

.logo-footer {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-text-light);
    display: block;
    margin-bottom: var(--spacing-4);
}

.footer-desc {
    color: rgba(255, 255, 255, 0.6);
    max-width: 300px;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
    color: rgba(255, 255, 255, 0.7);
}

.info-item i {
    font-size: 1.25rem;
    color: var(--color-accent);
    margin-top: 2px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-6) 0;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* Animations Triggered by JS */
.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

.reveal-up {
    transform: translateY(40px);
}

.reveal-left {
    transform: translateX(-40px);
}

.reveal-right {
    transform: translateX(40px);
}

.reveal-up.active,
.reveal-left.active,
.reveal-right.active {
    opacity: 1;
    transform: translate(0, 0);
}

/* Responsive Utilities */
@media (max-width: 768px) {
    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

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

    .img-1,
    .img-2 {
        grid-column: 1 / -1;
        transform: none;
    }
}

/* ==============================================================
   SUB-PAGE STYLES (Professor, Members, Research, Pubs, Gallery)
   ============================================================== */

/* Ensure navbar is visible on subpages without a dark hero background */
.navbar.solid {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-2) 0;
}

.navbar.solid .logo-text {
    color: var(--color-primary);
}

.navbar.solid .nav-link {
    color: var(--color-text-main);
}

.navbar.solid .nav-link:hover,
.navbar.solid .nav-link.active {
    color: var(--color-primary);
}

.navbar.solid .mobile-menu-btn {
    color: var(--color-text-main);
}

.navbar.solid .nav-link.active::after {
    width: 100%;
    background-color: var(--color-primary);
}

/* Common Subpage Elements */
.sub-page {
    padding-top: 80px;
    /* Offset for solid navbar */
}

.page-header {
    background: var(--color-bg-alt);
    padding: var(--spacing-8) 0 var(--spacing-4);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-4);
}

.page-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: var(--color-primary-dark);
}

.section-title-sm {
    font-size: 1.5rem;
    color: var(--color-text-main);
    font-weight: 700;
}

.border-bottom {
    border-bottom: 1px solid var(--color-border);
}

.pb-2 {
    padding-bottom: var(--spacing-2);
}

.mb-4 {
    margin-bottom: var(--spacing-4);
}

.mb-6 {
    margin-bottom: var(--spacing-6);
}

.mb-12 {
    margin-bottom: var(--spacing-12);
}

.mb-16 {
    margin-bottom: var(--spacing-16);
}

.pt-12 {
    padding-top: var(--spacing-12);
}

.pb-12 {
    padding-bottom: var(--spacing-12);
}

.pb-24 {
    padding-bottom: var(--spacing-24);
}

/* Professor Profile */
.prof-layout {
    display: grid;
    gap: var(--spacing-12);
}

@media (min-width: 992px) {
    .prof-layout {
        grid-template-columns: 360px 1fr;
        align-items: flex-start;
    }
}

.profile-sidebar {
    text-align: center;
}

@media (min-width: 992px) {
    .profile-sidebar {
        text-align: left;
    }
}

.profile-image-container {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    max-width: 320px;
    margin: 0 auto;
}

@media (min-width: 992px) {
    .profile-image-container {
        margin: 0;
    }
}

.profile-img {
    width: 100%;
    aspect-ratio: 3/4;
    /* Portrait ratio like typical academic photos */
    object-fit: cover;
}

.profile-name {
    font-size: 1.5rem;
    margin-bottom: 4px;
    font-weight: 700;
}

.profile-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.profile-dept {
    font-size: 1rem;
    color: var(--color-text-muted);
}

.contact-info-box {
    background: var(--color-bg-alt);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.box-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-4);
}

.contact-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-text-muted);
}

.contact-list i {
    color: var(--color-accent);
    font-size: 1.25rem;
}

/* Timeline (Education & Appts) */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-8);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.3rem;
    /* 2rem padding + half of bullet */
    top: 0.25rem;
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
    background: var(--color-primary);
    border: 2px solid white;
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-date {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--spacing-1);
    background: var(--color-primary-dark);
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
}

.timeline-content h4 {
    font-size: 1.125rem;
    margin-bottom: 4px;
}

.timeline-content p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

/* Members Grid */
.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-6);
}

.member-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    background: var(--color-bg-main);
    border: 1px solid var(--color-border);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.member-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.member-avatar {
    width: 64px;
    height: 64px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.member-name {
    font-size: 1.125rem;
    margin-bottom: 2px;
}

.member-role {
    font-size: 0.875rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 2px;
}

.member-topic {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Alumni List */
.alumni-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.alumni-item {
    background: var(--color-bg-alt);
    padding: var(--spacing-4) var(--spacing-6);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary);
}

.alumni-name {
    font-size: 1rem;
    margin-bottom: 4px;
}

.alumni-dest {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Detailed Research Blocks */
.research-detail-block {
    background: var(--color-bg-main);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base);
}

.research-detail-block:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.rd-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-4);
}

.rd-icon {
    width: 48px;
    height: 48px;
    background: rgba(10, 61, 145, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.rd-title {
    font-size: 1.5rem;
    color: var(--color-primary-dark);
}

.rd-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.rd-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    font-size: 1.125rem;
    color: var(--color-text-main);
}

.rd-list i {
    color: var(--color-primary);
    margin-top: 4px;
    font-size: 1.25rem;
}

.rounded-image {
    width: 100%;
    border-radius: var(--radius-lg);
    object-fit: cover;
    height: 300px;
}

/* Publications List */
.year-header {
    font-size: 2rem;
    color: var(--color-primary-dark);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: var(--spacing-2);
    margin-top: var(--spacing-24);
    /* Increased spacing to separate from preceding items */
    margin-bottom: var(--spacing-8);
}

.year-header:first-of-type {
    margin-top: 0;
}

.pub-item {
    display: flex;
    gap: var(--spacing-6);
    padding: var(--spacing-6) 0;
    border-bottom: 1px solid var(--color-border);
}

.pub-item:last-child {
    border-bottom: none;
}

.pub-number {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-muted);
    min-width: 30px;
}

.pub-image-wrapper {
    width: 160px;
    height: 120px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: var(--color-bg-alt);
    display: none;
    /* Hide on very small screens */
}

@media (min-width: 768px) {
    .pub-image-wrapper {
        display: block;
    }
}

.pub-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pub-content {
    flex-grow: 1;
}

.pub-title {
    font-size: 1.125rem;
    margin-bottom: 6px;
}

.pub-title a {
    color: var(--color-primary);
}

.pub-title a:hover {
    text-decoration: underline;
}

.pub-authors {
    color: var(--color-text-muted);
    margin-bottom: 4px;
    font-size: 0.9375rem;
}

.pub-journal {
    font-weight: 600;
    color: var(--color-text-main);
    font-size: 0.9375rem;
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-6);
}

.gallery-grid.home-gallery {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .gallery-grid.home-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .gallery-grid.home-gallery {
        grid-template-columns: 1fr;
    }
}

.gallery-item {
    background: var(--color-bg-main);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    cursor: pointer;
}

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

.gallery-img-wrapper {
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.gallery-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.gallery-item:hover .gallery-img {
    transform: scale(1.05);
}

.gallery-content {
    padding: var(--spacing-4);
}

.gallery-title {
    font-size: 1.125rem;
    margin-bottom: 4px;
}

.gallery-date {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Gallery Post Detail View */
.gallery-post-header {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.gallery-post-title {
    font-size: 2rem;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-2);
}

.gallery-post-meta {
    display: flex;
    gap: var(--spacing-4);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.gallery-post-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.gallery-post-content {
    margin-bottom: var(--spacing-12);
}

.gallery-post-images {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-8);
    align-items: center;
    margin-bottom: var(--spacing-8);
}

.gallery-post-images img {
    max-width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.gallery-post-body {
    font-size: 1.125rem;
    color: var(--color-text-main);
    line-height: 1.8;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-12);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
    max-width: 400px;
}

.footer-school-logo {
    height: 48px;
    width: auto;
    object-fit: contain;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2);
    margin-top: var(--spacing-16);
}

.page-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-main);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.page-link:hover,
.page-link.active {
    background: var(--color-primary);
    color: var(--color-text-light);
    border-color: var(--color-primary);
}

.btn-sm {
    padding: 0.4rem 1.25rem !important;
    font-size: 0.875rem !important;
    height: auto;
    line-height: 1.2;
}

/* Mobile specific tweaks for single-line headers */
@media (max-width: 500px) {
    .section-header {
        align-items: center !important;
    }

    .btn-sm {
        padding: 0.2rem 0.5rem !important;
        font-size: 0.75rem !important;
        white-space: nowrap;
    }

    .hide-on-mobile {
        display: none !important;
    }
}html { scroll-behavior: smooth; scroll-padding-top: 80px; }