/* v2.0 - Full Width Layout */
/* ============================================
   Professor Dr. Abdul Hakim Sarker Website
   Premium Academic Theme - Glass Morphism
   ============================================ */

/* CSS Variables - Premium Oxford Academic Theme with Glass Effects */
:root {
    /* Core Colors */
    --oxford-navy: #071B3B;
    --oxford-navy-light: #0F2A4D;
    --academic-blue: #0D2B52;
    --academic-blue-light: #1A3A6B;
    --academic-blue-lighter: #2A4A7B;
    --heritage-gold: #B68A2A;
    --heritage-gold-light: #D4A84B;
    --heritage-gold-dark: #8C6A1F;
    --heritage-gold-pale: rgba(182, 138, 42, 0.15);
    
    /* Neutral Colors */
    --ivory-white: #F8F6F1;
    --soft-parchment: #F3EFE7;
    --parchment-dark: #E8E2D6;
    --ink-black: #111111;
    --charcoal: #2D2D2D;
    --warm-gray: #8C8C8C;
    --gray-dark: #4A4A4A;
    --gray: #6B6B6B;
    --gray-light: #9B9B9B;
    --antique-silver: #CFCFCF;
    --silver: #C4C4C4;
    --white: #FFFFFF;
    --off-white: #F8F8F8;
    --cream: #F5F3F0;
    --black: #111111;
    --black-light: #333333;
    
    /* Glass Effect Colors */
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-bg-light: rgba(255, 255, 255, 0.12);
    --glass-bg-dark: rgba(7, 27, 59, 0.7);
    --glass-border: rgba(182, 138, 42, 0.25);
    --glass-border-light: rgba(255, 255, 255, 0.15);
    --glass-shadow: 0 8px 32px rgba(7, 27, 59, 0.4);
    --glass-shadow-light: 0 4px 20px rgba(0, 0, 0, 0.1);
    
    /* Legacy aliases */
    --gold: #B68A2A;
    --gold-light: #D4A84B;
    --primary-maroon: #0D2B52;
    --primary-maroon-dark: #071B3B;
    --primary-maroon-light: #1A3A6B;
    
    /* Typography */
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Merriweather', Georgia, serif;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
    --shadow-glass: 0 8px 32px rgba(7, 27, 59, 0.3);
    --shadow-gold: 0 8px 25px rgba(182, 138, 42, 0.25);
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Layout - Full Width with Responsive Padding */
    --container-width: 100%;
    --container-max-width: 1400px;
    --container-max-width-xl: 1600px;
    --container-max-width-2xl: 1800px;
    --section-padding: 100px;
    --section-padding-lg: 120px;
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --border-radius-xl: 28px;
    
    /* i18n Dynamic Scaling Defaults */
    --i18n-scale: 1;
    --i18n-line-height: 1.6;
}

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

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

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--charcoal);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

/* Container - Full Width with Responsive Padding */
.container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0 5%;
}

@media (min-width: 768px) {
    .container {
        padding: 0 6%;
    }
}

@media (min-width: 1200px) {
    .container {
        padding: 0 8%;
    }
}

@media (min-width: 1600px) {
    .container {
        padding: 0 10%;
    }
}

@media (min-width: 2000px) {
    .container {
        padding: 0 12%;
    }
}

/* ============================================
   TOP BAR - Premium Glass Style
   ============================================ */
.top-bar {
    background: linear-gradient(135deg, var(--oxford-navy) 0%, var(--academic-blue) 100%);
    color: var(--antique-silver);
    padding: 12px 0;
    font-size: 0.8125rem;
    border-bottom: 1px solid var(--glass-border);
    position: relative;
    overflow: hidden;
}

.top-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(182, 138, 42, 0.05) 50%, 
        transparent 100%);
    pointer-events: none;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.top-bar .separator {
    color: var(--gray);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.top-bar a {
    color: var(--silver);
}

.top-bar a:hover {
    color: var(--white);
}

.scholar-link {
    background: var(--glass-bg);
    padding: 6px 16px;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    border: 1px solid var(--glass-border);
    color: var(--heritage-gold-light);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.scholar-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s ease;
}

.scholar-link:hover {
    background: var(--heritage-gold);
    color: var(--oxford-navy);
    border-color: var(--heritage-gold);
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

.scholar-link:hover::before {
    left: 100%;
}

/* ============================================
   HEADER - Premium Glass Style
   ============================================ */
.main-header {
    background: linear-gradient(180deg, var(--white) 0%, var(--ivory-white) 100%);
    padding: 24px 0;
    border-bottom: 1px solid var(--parchment-dark);
    position: relative;
}

.main-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--heritage-gold) 50%, 
        transparent 100%);
    opacity: 0.5;
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo-container {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
}

.site-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.institution-info {
    display: flex;
    flex-direction: column;
}

.professor-name {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--black);
    line-height: 1.2;
}

.institution-name {
    font-size: 0.9375rem;
    color: var(--primary-maroon);
    font-weight: 500;
    margin-top: 4px;
}

.university-name {
    font-size: 0.875rem;
    color: var(--gray);
    margin-top: 2px;
}

.search-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--gray-dark);
    transition: color var(--transition-fast);
}

.search-btn:hover {
    color: var(--primary-maroon);
}

/* ============================================
   NAVIGATION - Premium Glass Morphism
   ============================================ */
.main-nav {
    background: linear-gradient(135deg, 
        rgba(13, 43, 82, 0.95) 0%, 
        rgba(7, 27, 59, 0.98) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--glass-shadow);
    border-bottom: 2px solid var(--heritage-gold);
}

.main-nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(212, 168, 75, 0.5) 50%, 
        transparent 100%);
}

.main-nav .container {
    display: flex;
    align-items: center;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 12px;
    flex-direction: column;
    gap: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--white);
    transition: all var(--transition-fast);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0;
    flex-wrap: nowrap;
    width: 100%;
    justify-content: space-between;
}

.nav-menu a {
    display: block;
    padding: 16px 8px;
    color: rgba(255,255,255,0.85);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1px;
    transition: all var(--transition-base);
    position: relative;
    border-radius: var(--border-radius-sm);
    margin: 0;
    white-space: nowrap;
    flex-shrink: 1;
    text-align: center;
    line-height: 1.2;
}

@media (min-width: 1200px) {
    .nav-menu a {
        padding: 16px 10px;
        font-size: 0.8125rem;
    }
}

@media (min-width: 1400px) {
    .nav-menu a {
        padding: 16px 12px;
        font-size: 0.875rem;
    }
}

@media (min-width: 1600px) {
    .nav-menu a {
        padding: 16px 14px;
        font-size: 0.9375rem;
    }
}

@media (min-width: 1800px) {
    .nav-menu a {
        padding: 16px 16px;
        font-size: 1rem;
    }
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--white);
    background: var(--glass-bg-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--heritage-gold), var(--heritage-gold-light));
    transition: width var(--transition-base);
    border-radius: 2px;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 50%;
}

.nav-menu a.active {
    color: var(--heritage-gold-light);
    font-weight: 600;
}

/* ============================================
   HERO SECTION - Oxford Academic Style
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--oxford-navy) 0%, var(--academic-blue) 50%, var(--academic-blue-light) 100%);
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(182, 138, 42, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(13, 43, 82, 0.4) 0%, transparent 40%),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(7, 27, 59, 0.4) 0%, rgba(7, 27, 59, 0.8) 100%);
}

.hero .container {
    position: relative;
    z-index: 2;
    padding-top: 80px;
    padding-bottom: 280px;
}

@media (min-width: 1400px) {
    .hero .container {
        padding-top: 100px;
        padding-bottom: 300px;
    }
}

@media (min-width: 1800px) {
    .hero .container {
        padding-top: 120px;
        padding-bottom: 320px;
    }
}

.hero-content {
    max-width: 100%;
    color: var(--white);
}

@media (min-width: 1200px) {
    .hero-content {
        max-width: 70%;
    }
}

@media (min-width: 1600px) {
    .hero-content {
        max-width: 60%;
    }
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, 
        rgba(182, 138, 42, 0.15) 0%, 
        rgba(182, 138, 42, 0.05) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--heritage-gold-light);
    padding: 10px 24px;
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    margin-bottom: 24px;
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
    box-shadow: 0 4px 15px rgba(182, 138, 42, 0.15);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

@media (min-width: 1400px) {
    .hero-title {
        font-size: 4.5rem;
    }
    .hero-subtitle {
        font-size: 1.5rem;
    }
    .hero-affiliation {
        font-size: 1.25rem;
    }
}

@media (min-width: 1800px) {
    .hero-title {
        font-size: 5rem;
    }
    .hero-subtitle {
        font-size: 1.625rem;
    }
    .hero-affiliation {
        font-size: 1.375rem;
    }
}

.hero-subtitle {
    font-size: 1.375rem;
    font-weight: 300;
    letter-spacing: 2px;
    margin-bottom: 16px;
    color: rgba(255,255,255,0.9);
}

.hero-affiliation {
    font-size: 1.125rem;
    line-height: 1.6;
    color: rgba(255,255,255,0.8);
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Buttons - Premium Glass Style */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    border: 1px solid transparent;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
    gap: 8px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.6s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--heritage-gold) 0%, var(--heritage-gold-dark) 100%);
    color: var(--oxford-navy);
    border-color: var(--heritage-gold);
    box-shadow: 0 4px 15px rgba(182, 138, 42, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--heritage-gold-light) 0%, var(--heritage-gold) 100%);
    border-color: var(--heritage-gold-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-gold);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--heritage-gold);
    border-color: var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--heritage-gold);
    color: var(--oxford-navy);
    border-color: var(--heritage-gold);
    transform: translateY(-3px);
    box-shadow: var(--shadow-gold);
}

.btn-outline {
    background: var(--glass-bg);
    color: var(--ivory-white);
    border-color: var(--glass-border-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: var(--ivory-white);
    color: var(--oxford-navy);
    border-color: var(--ivory-white);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(248, 246, 241, 0.2);
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.8125rem;
}

.btn-large {
    padding: 18px 36px;
    font-size: 1rem;
}

.btn-full {
    width: 100%;
}

/* Floating Widgets - Premium Glass Morphism */
.floating-widgets {
    position: absolute;
    bottom: 30px;
    left: 0;
    right: 0;
    z-index: 3;
    width: 100%;
}

.floating-widgets .container {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 0 20px;
    max-width: 100%;
}

@media (min-width: 1400px) {
    .floating-widgets .container {
        gap: 16px;
    }
}

@media (min-width: 1800px) {
    .floating-widgets .container {
        gap: 20px;
    }
}

.widget {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.1) 0%,
        rgba(255, 255, 255, 0.05) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: 10px 14px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 10px;
    width: 165px;
    height: 65px;
    animation: float 6s ease-in-out infinite;
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-base);
    flex-shrink: 0;
    flex-grow: 0;
    box-sizing: border-box;
}

@media (min-width: 1400px) {
    .widget {
        width: 180px;
        height: 70px;
        padding: 12px 16px;
    }
}

@media (min-width: 1800px) {
    .widget {
        width: 200px;
        height: 75px;
        padding: 14px 18px;
    }
}

.widget:hover {
    transform: translateY(-5px);
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.15) 0%, 
        rgba(255, 255, 255, 0.08) 100%);
    border-color: rgba(182, 138, 42, 0.4);
    box-shadow: 0 12px 40px rgba(7, 27, 59, 0.4);
}

.widget:nth-child(2) { animation-delay: 1s; }
.widget:nth-child(3) { animation-delay: 2s; }
.widget:nth-child(4) { animation-delay: 3s; }
.widget:nth-child(5) { animation-delay: 4s; }
.widget:nth-child(6) { animation-delay: 5s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.widget-icon {
    width: 40px;
    height: 40px;
    background-color: var(--heritage-gold);
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--oxford-navy);
    flex-shrink: 0;
}

.widget-content {
    display: flex;
    flex-direction: column;
}

.widget-number {
    font-family: var(--font-serif);
    font-size: 1.625rem;
    font-weight: 600;
    color: var(--ivory-white);
    line-height: 1;
}

.widget-label {
    font-size: 0.6875rem;
    color: rgba(248, 246, 241, 0.7);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

@media (min-width: 1400px) {
    .widget-number {
        font-size: 1.875rem;
    }
    .widget-label {
        font-size: 0.75rem;
    }
    .widget-icon {
        width: 44px;
        height: 44px;
    }
}

@media (min-width: 1800px) {
    .widget-number {
        font-size: 2rem;
    }
    .widget-label {
        font-size: 0.8125rem;
    }
    .widget-icon {
        width: 48px;
        height: 48px;
    }
}

/* ============================================
   SECTION STYLES - Premium Glass Style
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--heritage-gold);
    margin-bottom: 16px;
    position: relative;
    padding: 8px 20px;
    background: linear-gradient(135deg, 
        rgba(182, 138, 42, 0.1) 0%, 
        rgba(182, 138, 42, 0.05) 100%);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}



.section-tag::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 1px;
    background-color: var(--heritage-gold);
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.75rem;
    font-weight: 500;
    color: var(--oxford-navy);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--warm-gray);
    max-width: 700px;
    margin: 0 auto;
    font-family: var(--font-body);
    font-style: italic;
}

@media (min-width: 1400px) {
    .section-subtitle {
        max-width: 800px;
    }
}

.section-footer {
    text-align: center;
    margin-top: 50px;
}

/* ============================================
   BIOGRAPHY SECTION - Oxford Academic
   ============================================ */
.biography {
    padding: var(--section-padding) 0;
    background-color: var(--ivory-white);
}

.biography-content {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 80px;
    align-items: start;
}

@media (min-width: 1400px) {
    .biography-content {
        grid-template-columns: 420px 1fr;
        gap: 100px;
    }
}

@media (min-width: 1800px) {
    .biography-content {
        grid-template-columns: 450px 1fr;
        gap: 120px;
    }
}

.biography-image {
    position: sticky;
    top: 120px;
}

.image-frame {
    background: linear-gradient(135deg, var(--heritage-gold) 0%, var(--heritage-gold-dark) 100%);
    padding: 6px;
    border-radius: 2px;
    box-shadow: 0 20px 60px rgba(7, 27, 59, 0.2);
}

.image-placeholder {
    background-color: var(--cream);
    aspect-ratio: 3/4;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-light);
    overflow: hidden;
}

.image-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.signature-area {
    margin-top: 24px;
    text-align: center;
}

.signature-text {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--black);
}

.signature-title {
    font-size: 0.875rem;
    color: var(--gray);
    margin-top: 4px;
}

.biography-text {
    font-family: var(--font-body);
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--charcoal);
}

@media (min-width: 1400px) {
    .biography-text {
        font-size: 1.125rem;
        line-height: 1.9;
    }
    .lead-text {
        font-size: 1.375rem;
    }
}

@media (min-width: 1800px) {
    .biography-text {
        font-size: 1.1875rem;
    }
    .lead-text {
        font-size: 1.5rem;
    }
}

.biography-text p {
    margin-bottom: 20px;
}

.lead-text {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--black);
    line-height: 1.7;
}

.biography-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--silver);
}

@media (min-width: 1400px) {
    .biography-stats {
        gap: 60px;
    }
    .stat-number {
        font-size: 3rem;
    }
}

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

.stat-number {
    display: block;
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-maroon);
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray);
    margin-top: 8px;
}

/* ============================================
   TIMELINE SECTION - Oxford Academic
   ============================================ */
.timeline-section {
    padding: var(--section-padding) 0;
    background-color: var(--soft-parchment);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 1400px) {
    .timeline {
        max-width: 1000px;
    }
}

@media (min-width: 1800px) {
    .timeline {
        max-width: 1200px;
    }
}

.timeline-line {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 100%;
    background: linear-gradient(to bottom, var(--heritage-gold), var(--academic-blue));
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
    text-align: right;
}

.timeline-item:nth-child(odd) .timeline-content {
    padding-right: 60px;
    padding-left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
    padding-left: 60px;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background-color: var(--heritage-gold);
    border: 3px solid var(--soft-parchment);
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--heritage-gold);
    z-index: 2;
}

.timeline-content {
    width: 50%;
    padding: 0 40px;
}

.timeline-year {
    display: inline-block;
    background-color: transparent;
    color: var(--heritage-gold);
    padding: 4px 0;
    font-size: 0.875rem;
    font-weight: 600;
    border-bottom: 1px solid var(--heritage-gold);
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.timeline-content h3 {
    font-family: var(--font-serif);
    font-size: 1.375rem;
    color: var(--black);
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 0.9375rem;
    color: var(--gray);
    line-height: 1.6;
}

/* ============================================
   RESEARCH SECTION - Oxford Academic
   ============================================ */
.research-section {
    padding: var(--section-padding) 0;
    background-color: var(--ivory-white);
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

@media (min-width: 1400px) {
    .research-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 35px;
    }
}

@media (min-width: 1800px) {
    .research-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 40px;
    }
}

.research-card {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: 2px;
    box-shadow: 0 2px 10px rgba(7, 27, 59, 0.06);
    transition: all var(--transition-base);
    border: 1px solid var(--parchment-dark);
    border-top: 3px solid transparent;
}

@media (min-width: 1400px) {
    .research-card {
        padding: 45px 35px;
    }
    .research-card h3 {
        font-size: 1.5rem;
    }
    .research-card p {
        font-size: 1rem;
    }
}

@media (min-width: 1800px) {
    .research-card {
        padding: 50px 40px;
    }
    .research-card h3 {
        font-size: 1.625rem;
    }
}

.research-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(7, 27, 59, 0.12);
    border-top-color: var(--heritage-gold);
}

.research-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--academic-blue) 0%, var(--oxford-navy) 100%);
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--heritage-gold);
    margin-bottom: 24px;
}

.research-card h3 {
    font-family: var(--font-serif);
    font-size: 1.375rem;
    color: var(--oxford-navy);
    margin-bottom: 12px;
    font-weight: 500;
}

.research-card p {
    font-size: 0.9375rem;
    color: var(--warm-gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.research-link {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--heritage-gold);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--transition-fast);
}

.research-link:hover {
    color: var(--heritage-gold-dark);
    padding-left: 4px;
}

/* ============================================
   PUBLICATIONS SECTION - Oxford Academic
   ============================================ */
.publications-section {
    padding: var(--section-padding) 0;
    background-color: var(--soft-parchment);
}

.publications-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

@media (min-width: 1200px) {
    .publications-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1800px) {
    .publications-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 35px;
    }
}

.publication-card {
    background-color: var(--white);
    padding: 32px;
    border-radius: 2px;
    border-left: 3px solid var(--heritage-gold);
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(7, 27, 59, 0.05);
}

@media (min-width: 1400px) {
    .publication-card {
        padding: 36px;
    }
    .publication-card h3 {
        font-size: 1.375rem;
    }
}

@media (min-width: 1800px) {
    .publication-card {
        padding: 40px;
    }
    .publication-card h3 {
        font-size: 1.5rem;
    }
}

.publication-card:hover {
    box-shadow: 0 12px 40px rgba(7, 27, 59, 0.1);
    transform: translateX(6px);
}

.publication-type {
    display: inline-block;
    background-color: transparent;
    color: var(--heritage-gold);
    padding: 4px 0;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border-bottom: 1px solid var(--heritage-gold);
    margin-bottom: 16px;
}

.publication-card h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--oxford-navy);
    margin-bottom: 12px;
    line-height: 1.4;
    font-weight: 500;
}

.publication-desc {
    font-size: 0.9375rem;
    color: var(--warm-gray);
    line-height: 1.7;
    margin-bottom: 16px;
}

.publication-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.publication-meta .year {
    font-weight: 600;
    color: var(--heritage-gold);
}

.publication-meta .publisher {
    color: var(--gray-light);
    font-size: 0.875rem;
}

.publication-actions {
    display: flex;
    gap: 12px;
}

/* ============================================
   WRITEUPS CTA SECTION - Oxford Academic
   ============================================ */
.writeups-cta {
    padding: var(--section-padding) 0;
    background: linear-gradient(135deg, var(--oxford-navy) 0%, var(--academic-blue) 100%);
    color: var(--ivory-white);
}

.writeups-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 60px;
    align-items: center;
}

.writeups-text .section-tag {
    background-color: var(--gold);
    color: var(--black);
    padding: 6px 14px;
    border-radius: 4px;
}

.writeups-text h2 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    margin: 20px 0 24px;
}

.writeups-text p {
    font-size: 1.0625rem;
    line-height: 1.7;
    opacity: 0.9;
    margin-bottom: 24px;
}

.feature-list {
    margin-bottom: 32px;
}

.feature-list li {
    padding: 8px 0;
    padding-left: 28px;
    position: relative;
    font-size: 1rem;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--gold-light);
    font-weight: 700;
}

.writeups-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.book-stack {
    position: relative;
    width: 200px;
    height: 250px;
}

.book {
    position: absolute;
    width: 160px;
    height: 200px;
    border-radius: 4px 8px 8px 4px;
    box-shadow: var(--shadow-lg);
}

.book-1 {
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
    transform: rotate(-8deg) translateX(-20px);
    z-index: 1;
}

.book-2 {
    background: linear-gradient(135deg, var(--white) 0%, var(--cream) 100%);
    left: 20px;
    z-index: 2;
}

.book-3 {
    background: linear-gradient(135deg, var(--black-light) 0%, var(--charcoal) 100%);
    transform: rotate(8deg) translateX(40px);
    z-index: 3;
}

/* ============================================
   TEACHING SECTION
   ============================================ */
.teaching-section {
    padding: var(--section-padding) 0;
    background-color: var(--off-white);
}

.teaching-content {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: start;
}

.teaching-courses h3,
.teaching-impact h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--black);
    margin-bottom: 24px;
}

.course-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.course-list li {
    padding: 12px 16px;
    background-color: var(--white);
    border-radius: 8px;
    font-size: 0.9375rem;
    border-left: 3px solid var(--primary-maroon);
    transition: all var(--transition-fast);
}

.course-list li:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.impact-stats {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.impact-widget {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 246, 241, 0.9) 100%);
    border: 1px solid rgba(182, 138, 42, 0.3);
    border-radius: var(--border-radius-md);
    padding: 14px 18px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 14px;
    min-width: 190px;
    height: auto;
    min-height: 75px;
    box-shadow: 0 4px 20px rgba(7, 27, 59, 0.1), 0 2px 8px rgba(182, 138, 42, 0.1);
    transition: all var(--transition-base);
    flex-shrink: 0;
    flex-grow: 0;
    box-sizing: border-box;
}

.impact-widget:hover {
    transform: translateY(-5px);
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 1) 0%, 
        rgba(248, 246, 241, 0.95) 100%);
    border-color: rgba(182, 138, 42, 0.5);
    box-shadow: 0 8px 30px rgba(7, 27, 59, 0.15), 0 4px 12px rgba(182, 138, 42, 0.15);
}

.impact-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--heritage-gold) 0%, var(--heritage-gold-dark) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ivory-white);
    flex-shrink: 0;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(182, 138, 42, 0.3);
}

.impact-content {
    display: flex;
    flex-direction: column;
}

.impact-number {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--oxford-navy);
    line-height: 1.2;
    white-space: nowrap;
}

.impact-label {
    font-size: 0.75rem;
    color: var(--charcoal);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
    white-space: nowrap;
}

/* ============================================
   CONFERENCES SECTION
   ============================================ */
.conferences-section {
    padding: var(--section-padding) 0;
    background-color: var(--white);
}

.conferences-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.conference-card {
    background-color: var(--off-white);
    padding: 32px;
    border-radius: 12px;
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.conference-card:hover {
    background-color: var(--white);
    border-color: var(--primary-maroon);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.conference-flag {
    font-size: 3rem;
    margin-bottom: 16px;
}

.conference-card h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--black);
    margin-bottom: 12px;
}

.conference-card p {
    font-size: 0.9375rem;
    color: var(--gray);
    line-height: 1.6;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-section {
    padding: var(--section-padding) 0;
    background-color: var(--off-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: stretch;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
    justify-content: center;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 16px 20px;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.9) 0%, 
        rgba(255, 255, 255, 0.7) 100%);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(182, 138, 42, 0.15);
    transition: all var(--transition-base);
}

.contact-item:hover {
    transform: translateX(4px);
    border-color: rgba(182, 138, 42, 0.3);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--heritage-gold) 0%, var(--heritage-gold-dark) 100%);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(182, 138, 42, 0.3);
}

.contact-icon svg {
    width: 22px;
    height: 22px;
}

.contact-details h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink-black);
    margin-bottom: 6px;
    font-family: var(--font-serif);
}

.contact-details p {
    font-size: 0.9375rem;
    color: var(--gray);
    line-height: 1.6;
}

.contact-form-wrapper {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(255, 255, 255, 0.9) 100%);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(182, 138, 42, 0.1);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--black);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--silver);
    border-radius: 8px;
    font-size: 0.9375rem;
    font-family: var(--font-sans);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-maroon);
    box-shadow: 0 0 0 3px rgba(123, 31, 42, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   FOOTER - Premium Glass Style
   ============================================ */
.main-footer {
    background: linear-gradient(180deg, var(--oxford-navy) 0%, var(--ink-black) 100%);
    color: var(--silver);
    padding: 80px 0 0;
    position: relative;
    overflow: hidden;
}

.main-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--heritage-gold) 50%, 
        transparent 100%);
    opacity: 0.5;
}

.footer-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
    width: 100px;
    height: auto;
    margin-bottom: 16px;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.3));
}

.footer-tagline {
    font-size: 0.9375rem;
    font-style: italic;
    color: var(--gray-light);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--heritage-gold-light);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    font-size: 0.875rem;
    color: var(--gray);
    transition: all var(--transition-base);
    display: inline-block;
}

.footer-column ul li a:hover {
    color: var(--heritage-gold-light);
    transform: translateX(4px);
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 44px;
    height: 44px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--silver);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.social-links a:hover {
    background: var(--heritage-gold);
    border-color: var(--heritage-gold);
    color: var(--oxford-navy);
    transform: translateY(-3px);
    box-shadow: var(--shadow-gold);
}

.footer-bottom {
    padding: 30px 0;
    text-align: center;
    background: rgba(0,0,0,0.2);
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--gray);
    margin-bottom: 4px;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .biography-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .biography-image {
        position: static;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .research-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .writeups-content {
        grid-template-columns: 1fr;
    }
    
    .writeups-visual {
        order: -1;
    }
    
    .teaching-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .conferences-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
    
    .top-bar {
        display: none;
    }
    
    .main-header .container {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
    
    .header-left {
        flex-direction: column;
    }
    
    .professor-name {
        font-size: 1.375rem;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--primary-maroon-dark);
        flex-direction: column;
        padding: 16px;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu a {
        padding: 12px 16px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .floating-widgets .container {
        flex-direction: column;
        align-items: center;
    }
    
    .widget {
        width: 100%;
        max-width: 280px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .research-grid,
    .publications-grid,
    .conferences-grid {
        grid-template-columns: 1fr;
    }
    
    .course-list {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .timeline-line {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(odd) {
        flex-direction: column;
        text-align: left;
        padding-left: 50px;
    }
    
    .timeline-marker {
        left: 20px;
    }
    
    .timeline-content,
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        width: 100%;
        padding: 0;
    }
    
    .biography-stats {
        flex-direction: column;
        gap: 24px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.875rem;
    }
    
    .section-title {
        font-size: 1.625rem;
    }
    
    .widget {
        min-width: auto;
        padding: 16px 20px;
    }
    
    .widget-number {
        font-size: 1.375rem;
    }
}

/* ============================================
   NEW PROMPT 1.2 SECTIONS STYLING
   ============================================ */

/* Legacy Section */
.legacy-section {
    padding: var(--section-padding) 0;
    background: linear-gradient(135deg, var(--oxford-navy) 0%, var(--academic-blue) 100%);
    color: var(--ivory-white);
}

.legacy-section .section-title {
    color: var(--heritage-gold);
}

.legacy-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.legacy-timeline {
    display: flex;
    flex-direction: column;
    gap: 30px;
    position: relative;
}

.legacy-timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--heritage-gold), transparent);
}

.legacy-item {
    display: flex;
    gap: 20px;
    padding: 0 0 0 80px;
    position: relative;
}

.legacy-marker {
    position: absolute;
    left: 0;
    top: 0;
    width: 40px;
    height: 40px;
    background-color: var(--heritage-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--oxford-navy);
    font-size: 0.75rem;
    font-weight: 700;
    text-align: center;
    padding: 4px;
    box-shadow: 0 0 0 4px var(--oxford-navy), 0 0 0 8px var(--heritage-gold);
}

.legacy-date {
    font-size: 0.75rem;
    line-height: 1.2;
}

.legacy-text h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--heritage-gold);
}

.legacy-text p {
    font-size: 0.9375rem;
    color: var(--ivory-white);
    opacity: 0.9;
    line-height: 1.6;
}

.legacy-mission h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--heritage-gold);
}

.legacy-pillars {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.pillar-item {
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(212, 168, 75, 0.2);
    border-radius: 8px;
    padding: 14px;
    text-align: center;
}

.pillar-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--heritage-gold-light);
    display: block;
}

/* Vision Section */
.vision-section {
    padding: var(--section-padding) 0;
    background-color: var(--ivory-white);
}

.vision-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.vision-card {
    background-color: var(--white);
    padding: 32px;
    border-radius: 12px;
    border-top: 4px solid var(--heritage-gold);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    text-align: center;
}

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

.vision-icon {
    width: 64px;
    height: 64px;
    background-color: var(--soft-parchment);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--heritage-gold);
    margin: 0 auto 16px;
    transition: all var(--transition-base);
}

.vision-card:hover .vision-icon {
    background-color: var(--heritage-gold);
    color: var(--white);
    transform: rotate(5deg);
}

.vision-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--oxford-navy);
}

.vision-card p {
    font-size: 0.9375rem;
    color: var(--gray);
    line-height: 1.6;
}

/* QiM-AI Preview Section */
.qim-ai-preview-section {
    padding: var(--section-padding) 0;
    background: linear-gradient(135deg, rgba(7, 27, 59, 0.95) 0%, rgba(13, 43, 82, 0.95) 100%),
                url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(212,168,75,0.03)" stroke-width="1"/></pattern></defs><rect width="1200" height="600" fill="url(%23grid)"/></svg>');
    background-attachment: fixed;
}

.qim-ai-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(212, 168, 75, 0.1);
    padding: 60px;
    border-radius: 16px;
}

.qim-ai-content {
    color: var(--ivory-white);
}

.qim-ai-badge {
    display: inline-block;
    background-color: rgba(212, 168, 75, 0.15);
    border: 1px solid var(--heritage-gold);
    color: var(--heritage-gold);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.qim-ai-card h2 {
    font-size: 3rem;
    font-family: var(--font-serif);
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--heritage-gold);
}

.qim-ai-subtitle {
    font-size: 1.25rem;
    color: var(--ivory-white);
    margin-bottom: 20px;
    opacity: 0.95;
}

.qim-ai-description {
    font-size: 0.9375rem;
    line-height: 1.8;
    margin-bottom: 24px;
    opacity: 0.9;
}

.qim-ai-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 32px 0;
}

.feature-item {
    background-color: rgba(212, 168, 75, 0.08);
    border-left: 3px solid var(--heritage-gold);
    padding: 12px 16px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
}

.feature-icon {
    font-size: 1.25rem;
}

.qim-ai-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.ai-placeholder {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, rgba(212, 168, 75, 0.1) 0%, rgba(212, 168, 75, 0.05) 100%);
    border: 2px dashed rgba(212, 168, 75, 0.3);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 3s ease-in-out infinite;
}

.qim-ai-logo-link {
    display: block;
    width: 100%;
    max-width: 600px;
    transition: transform 0.3s ease;
}

.qim-ai-logo-link:hover {
    transform: scale(1.08);
}

.qim-ai-logo {
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 15px 40px rgba(138, 43, 226, 0.4));
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* SWLab Preview Section */
.swlab-preview-section {
    padding: var(--section-padding) 0;
    background-color: var(--soft-parchment);
}

.repository-preview-section {
    padding: var(--section-padding) 0;
    background-color: rgba(7, 27, 59, 0.05);
}

.repository-preview-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(220px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.repository-preview-card {
    background-color: var(--white);
    border: 1px solid rgba(7, 27, 59, 0.08);
    border-radius: 16px;
    padding: 26px;
    box-shadow: var(--shadow-sm);
}

.repository-preview-card h3 {
    margin-bottom: 0.85rem;
    color: var(--oxford-navy);
}

.repository-preview-card p {
    color: var(--gray);
    line-height: 1.8;
}

.repository-preview-cta {
    text-align: center;
}

.swlab-preview-section {
    padding: var(--section-padding) 0;
    background-color: var(--soft-parchment);
}

.swlab-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.swlab-card {
    background-color: var(--white);
    padding: 28px;
    border-radius: 10px;
    border-left: 4px solid var(--heritage-gold);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.swlab-card:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.swlab-icon {
    color: var(--heritage-gold);
    margin-bottom: 12px;
}

.swlab-card h3 {
    font-size: 1.0625rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--oxford-navy);
}

.swlab-card p {
    font-size: 0.875rem;
    color: var(--gray);
    line-height: 1.6;
}

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

/* Metaverse Announcement Section */
.metaverse-section {
    padding: 120px 0;
    background: linear-gradient(135deg, 
        rgba(7, 27, 59, 0.97) 0%, 
        rgba(13, 43, 82, 0.97) 50%, 
        rgba(7, 27, 59, 0.97) 100%);
    position: relative;
    overflow: hidden;
}

.metaverse-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(212, 168, 75, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(212, 168, 75, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.metaverse-content {
    position: relative;
    z-index: 1;
}

.metaverse-announcement {
    text-align: center;
    color: var(--ivory-white);
}

.metaverse-headline {
    font-size: 4rem;
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--heritage-gold);
    margin-bottom: 16px;
    letter-spacing: -2px;
}

.metaverse-subtitle {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--ivory-white);
}

.metaverse-description {
    font-size: 1.125rem;
    max-width: 700px;
    margin: 0 auto 48px;
    line-height: 1.8;
    opacity: 0.95;
}

.metaverse-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.metaverse-feature {
    background-color: rgba(212, 168, 75, 0.1);
    border: 1px solid rgba(212, 168, 75, 0.2);
    border-radius: 8px;
    padding: 24px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.metaverse-feature h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--heritage-gold);
    margin-bottom: 12px;
}

.metaverse-feature p {
    font-size: 0.875rem;
    color: var(--ivory-white);
    opacity: 0.85;
    line-height: 1.5;
}

/* Acknowledgement Section */
.acknowledgement-section {
    padding: var(--section-padding) 0;
    background-color: var(--white);
}

.acknowledgement-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.acknowledgement-card {
    background: linear-gradient(135deg, var(--soft-parchment) 0%, var(--ivory-white) 100%);
    border: 1px solid var(--parchment-dark);
    padding: 36px;
    border-radius: 10px;
    text-align: center;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.acknowledgement-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.ack-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--oxford-navy);
    margin-bottom: 8px;
    font-family: var(--font-serif);
}

.ack-role {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--heritage-gold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.ack-description {
    font-size: 0.875rem;
    color: var(--gray);
    line-height: 1.6;
}

.acknowledgement-message {
    background-color: var(--soft-parchment);
    border-left: 4px solid var(--heritage-gold);
    padding: 32px;
    border-radius: 8px;
    text-align: center;
}

.acknowledgement-message p {
    font-size: 1rem;
    color: var(--gray-dark);
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
    font-style: italic;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   MULTILINGUAL SYSTEM - i18n
   ============================================ */

/* Language Selector */
.lang-selector {
    position: relative;
    margin-right: 16px;
}

.lang-selector-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
    color: var(--ivory-white);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-selector-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--heritage-gold);
}

.lang-flag {
    font-size: 1rem;
    line-height: 1;
}

.lang-code {
    font-weight: 600;
    letter-spacing: 0.5px;
}

.lang-arrow {
    transition: transform var(--transition-fast);
}

.lang-dropdown.open + .lang-selector-btn .lang-arrow,
.lang-selector-btn[aria-expanded="true"] .lang-arrow {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    background: linear-gradient(135deg, var(--oxford-navy) 0%, var(--academic-blue) 100%);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: 8px;
    box-shadow: var(--glass-shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1000;
}

.lang-dropdown.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 12px;
    background: transparent;
    border: none;
    border-radius: var(--border-radius-sm);
    color: var(--ivory-white);
    font-size: 0.875rem;
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-option:hover {
    background: rgba(255, 255, 255, 0.1);
}

.lang-option.active {
    background: rgba(182, 138, 42, 0.2);
    color: var(--heritage-gold);
}

.lang-option .lang-flag {
    font-size: 1.125rem;
}

.lang-option .lang-name {
    flex: 1;
}

.lang-option .lang-code-small {
    font-size: 0.75rem;
    opacity: 0.7;
    font-weight: 500;
}

/* Typography Adjustments per Language */
:root {
    --i18n-font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --i18n-scale: 1;
    --i18n-line-height: 1.6;
}

/* Base font application */
body {
    font-family: var(--i18n-font);
}

/* Bangla (BN) - Shiliguri Font */
body.lang-bn,
body.bangla-mode {
    font-family: 'Shiliguri', 'Noto Sans Bengali', sans-serif;
}

body.lang-bn .hero-title,
body.lang-bn .section-title,
body.lang-bn .professor-name,
body.lang-bn h1,
body.lang-bn h2,
body.lang-bn h3 {
    font-family: 'Shiliguri', 'Noto Sans Bengali', sans-serif;
    font-weight: 600;
}

/* Hindi (HN) - Devanagari Support */
body.lang-hn {
    font-family: 'Noto Sans Devanagari', 'Inter', sans-serif;
}

body.lang-hn .hero-title,
body.lang-hn .section-title,
body.lang-hn h1,
body.lang-hn h2 {
    font-family: 'Noto Sans Devanagari', 'Playfair Display', serif;
}

/* Russian (RU) - Cyrillic Support */
body.lang-ru {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body.lang-ru .hero-title,
body.lang-ru .section-title {
    letter-spacing: -0.02em;
}

/* German (DE) - Long word handling */
body.lang-de .nav-link,
body.lang-de .btn {
    font-size: calc(0.875rem * var(--i18n-scale));
}

body.lang-de .section-title {
    font-size: calc(2.5rem * var(--i18n-scale));
}

/* Dynamic Font Scaling System */
body {
    font-size: calc(16px * var(--i18n-scale));
    line-height: var(--i18n-line-height);
}

/* Adjust headings per language */
.hero-title {
    font-size: calc(3.5rem * var(--i18n-scale));
    line-height: calc(1.2 * var(--i18n-line-height));
}

.section-title {
    font-size: calc(2.5rem * var(--i18n-scale));
    line-height: calc(1.3 * var(--i18n-line-height));
}

h3 {
    font-size: calc(1.5rem * var(--i18n-scale));
}

/* Button text handling for long translations */
.btn {
    min-width: fit-content;
    white-space: nowrap;
    font-size: calc(0.9375rem * var(--i18n-scale));
}

/* Navigation adjustments */
.nav-link {
    font-size: calc(0.9375rem * var(--i18n-scale));
}

/* Form labels and inputs */
.form-group label {
    font-size: calc(0.875rem * var(--i18n-scale));
}

.form-group input,
.form-group textarea {
    font-size: calc(0.9375rem * var(--i18n-scale));
}

/* Card and content spacing adjustments */
.feature-card h3,
.publication-card h3,
.book-card h3 {
    font-size: calc(1.25rem * var(--i18n-scale));
}

.feature-card p,
.publication-card p,
.book-card p {
    font-size: calc(0.9375rem * var(--i18n-scale));
}

/* Stats and numbers - keep consistent */
.stat-number,
.impact-number,
.widget-number {
    font-feature-settings: 'tnum';
    font-variant-numeric: tabular-nums;
}

/* Responsive adjustments for multilingual */
@media (max-width: 1024px) {
    .hero-title {
        font-size: calc(3rem * var(--i18n-scale));
    }
    
    .section-title {
        font-size: calc(2rem * var(--i18n-scale));
    }
}

@media (max-width: 768px) {
    .lang-selector {
        margin-right: 8px;
    }
    
    .lang-selector-btn {
        padding: 6px 10px;
    }
    
    .lang-code {
        display: none;
    }
    
    .hero-title {
        font-size: calc(2.25rem * var(--i18n-scale));
    }
    
    .section-title {
        font-size: calc(1.75rem * var(--i18n-scale));
    }
    
    /* Allow text wrapping on mobile for long translations */
    .btn {
        white-space: normal;
        text-align: center;
    }
}

/* RTL Support Structure (Future-ready) */
[dir="rtl"] {
    direction: rtl;
}

[dir="rtl"] .header-left,
[dir="rtl"] .hero-content,
[dir="rtl"] .section-header {
    text-align: right;
}

[dir="rtl"] .nav-menu {
    flex-direction: row-reverse;
}

[dir="rtl"] .contact-item,
[dir="rtl"] .feature-item {
    flex-direction: row-reverse;
}

/* Bangla font is loaded via Google Fonts link in HTML <head> */
/* Noto Sans Bengali is the primary Bangla font, loaded via <link> */

/* Smooth language transition */
[data-i18n],
[data-i18n-html] {
    transition: opacity 0.2s ease;
}

.lang-changing [data-i18n],
.lang-changing [data-i18n-html] {
    opacity: 0.7;
}

/* Accessibility: Focus styles for language selector */
.lang-selector-btn:focus-visible,
.lang-option:focus-visible {
    outline: 2px solid var(--heritage-gold);
    outline-offset: 2px;
}

/* Print styles - hide language selector */
@media print {
    .lang-selector {
        display: none;
    }
}