/* ============================================
   RIFAT ARA TASNIM - PORTFOLIO STYLES
   Rich Color Palette & Beautiful Animations
   ============================================ */

/* Custom Properties - Rich Color Palette */
:root {
    /* Primary Colors - Warm Earth Tones with Vibrancy */
    --color-primary: #2D5A3D;
    --color-primary-light: #4A8C5E;
    --color-primary-dark: #1E3D29;

    /* Accent Colors - Coral & Gold */
    --color-accent: #E85D4C;
    --color-accent-light: #FF7B6B;
    --color-accent-dark: #C94535;
    --color-gold: #D4A853;
    --color-gold-light: #E8C77B;

    /* Neutral Palette */
    --color-cream: #FAF6F0;
    --color-cream-dark: #F0E8DA;
    --color-brown: #8B6E4E;
    --color-brown-light: #A68B6A;
    --color-charcoal: #2C2C2C;
    --color-charcoal-light: #4A4A4A;

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #2D5A3D 0%, #4A8C5E 50%, #7AB88C 100%);
    --gradient-accent: linear-gradient(135deg, #E85D4C 0%, #FF7B6B 100%);
    --gradient-gold: linear-gradient(135deg, #D4A853 0%, #E8C77B 100%);
    --gradient-dark: linear-gradient(135deg, #2C2C2C 0%, #4A4A4A 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);

    /* Typography */
    --font-display: 'DM Serif Display', serif;
    --font-body: 'DM Sans', sans-serif;

    /* Spacing */
    --section-padding: clamp(80px, 12vw, 150px);
    --container-width: 1280px;

    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-slow: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(45, 90, 61, 0.08);
    --shadow-md: 0 4px 20px rgba(45, 90, 61, 0.12);
    --shadow-lg: 0 8px 40px rgba(45, 90, 61, 0.16);
    --shadow-xl: 0 20px 60px rgba(45, 90, 61, 0.2);
    --shadow-glow: 0 0 40px rgba(232, 93, 76, 0.3);
}

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

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

body {
    font-family: var(--font-body);
    background-color: var(--color-cream);
    color: var(--color-charcoal);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Animated Background Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(45, 90, 61, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(232, 93, 76, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(212, 168, 83, 0.02) 0%, transparent 40%);
    pointer-events: none;
    z-index: -1;
}

/* Selection Style */
::selection {
    background-color: var(--color-accent);
    color: white;
}

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 clamp(20px, 5vw, 60px);
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    background: rgba(250, 246, 240, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: 15px 0;
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 clamp(20px, 5vw, 60px);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 2.2rem;
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 700;
    letter-spacing: -1px;
    transition: var(--transition-smooth);
    white-space: nowrap;
}

.nav-logo:hover {
    color: var(--color-accent);
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 18px;
    align-items: center;
}

.nav-menu a {
    color: var(--color-charcoal);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: var(--transition-smooth);
    white-space: nowrap;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: var(--transition-smooth);
    border-radius: 2px;
}

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

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

.nav-cta {
    background: var(--gradient-accent);
    color: white;
    padding: 10px 22px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    white-space: nowrap;
    transition: var(--transition-bounce);
    box-shadow: var(--shadow-md);
}

.nav-cta:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-glow);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-charcoal);
    transition: var(--transition-smooth);
    border-radius: 2px;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: var(--gradient-hero);
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    animation: heroFloat 20s ease-in-out infinite;
}

@keyframes heroFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(-30px, 30px) rotate(5deg); }
    66% { transform: translate(20px, -20px) rotate(-5deg); }
}

.hero-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 clamp(20px, 5vw, 60px);
}

.hero-content {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 150px;
    opacity: 0;
    animation: fadeInUp 1s ease forwards;
    animation-delay: 0.2s;
}

.hero-text {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hero-bio {
    font-size: 0.95rem;
    color: var(--color-charcoal-light);
    line-height: 1.7;
    max-width: 360px;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-position {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 1.5rem;
}

.hero-name {
    font-family: 'DM Serif Display', serif;
    font-size: 1.8rem;
    color: var(--color-charcoal);
    line-height: 1.2;
    white-space: nowrap;
}

.hero-role {
    font-size: 1rem;
    color: var(--color-primary);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.hero-dept {
    font-size: 0.9rem;
    color: var(--color-brown);
    font-weight: 500;
}

.hero-photo-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    flex-shrink: 0;
    text-align: center;
}

.hero-photo {
    margin-bottom: 1rem;
    width: 380px;
    height: 380px;
    border-radius: 16px;
    overflow: hidden;
    border: 4px solid var(--color-primary);
    box-shadow: 0 8px 32px rgba(45, 90, 61, 0.25);
}

.hero-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 15%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-primary);
    color: white;
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 30px;
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { box-shadow: 0 0 0 0 rgba(45, 90, 61, 0.3); }
    50% { box-shadow: 0 0 20px 5px rgba(45, 90, 61, 0.2); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6vw, 5rem);
    line-height: 1.1;
    color: var(--color-charcoal);
    margin-bottom: 30px;
    letter-spacing: -2px;
}

.hero-title .highlight {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 8px;
    background: var(--color-gold);
    opacity: 0.3;
    z-index: -1;
    transform: skew(-12deg);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-charcoal-light);
    max-width: 540px;
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    flex-direction: row;
    gap: 20px;
    margin-bottom: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-bounce);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-accent);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: white;
    color: var(--color-charcoal);
    border: 2px solid var(--color-cream-dark);
}

.btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-4px);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    padding: 14px 28px;
}

.btn-outline:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    gap: 50px;
}

.stat {
    text-align: left;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-charcoal-light);
    font-weight: 500;
}

.research-hero-cards {
    width: 100% !important;
    margin-bottom: 48px;
    opacity: 1 !important;
    animation: none !important;
}

.hero-about {
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex: 1;
    text-align: justify;
    opacity: 0;
    animation: fadeInRight 1s ease forwards;
    animation-delay: 0.5s;
}

.hero-about p {
    font-size: 0.95rem;
    color: var(--color-charcoal-light);
    line-height: 1.75;
}

.hero-about-lead {
    font-size: 1.05rem !important;
    color: var(--color-charcoal) !important;
    font-weight: 500;
}

.hero-about-location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    color: var(--color-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

.hero-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    width: 500px;
    opacity: 0;
    animation: fadeInRight 1s ease forwards;
    animation-delay: 0.5s;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-card {
    padding: 24px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-bounce);
    overflow: hidden;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 16px;
}

.hero-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.hero-card:nth-child(1) { background: #FAF6F0; animation-delay: 0.6s; }
.hero-card:nth-child(2) { background: #E8F5EE; animation-delay: 0.7s; }
.hero-card:nth-child(3) { background: #FDF6E3; animation-delay: 0.8s; }
.hero-card:nth-child(4) { background: #FDECEA; animation-delay: 0.9s; }

.hero-card-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-hero);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.hero-card-icon svg {
    width: 26px;
    height: 26px;
    color: white;
}

.hero-card h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: 8px;
    color: var(--color-charcoal);
}

.hero-card p {
    font-size: 0.95rem;
    color: var(--color-charcoal-light);
    line-height: 1.5;
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-tag {
    display: inline-block;
    background: var(--gradient-gold);
    color: var(--color-charcoal);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    line-height: 1.2;
    color: var(--color-charcoal);
    letter-spacing: -1px;
}

.section-desc {
    margin-top: 20px;
    font-size: 1.1rem;
    color: var(--color-charcoal-light);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    padding: var(--section-padding) 0;
    background: white;
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-cream-dark), transparent);
}

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

.about-text {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

.about-text.animate {
    opacity: 1;
    transform: translateY(0);
}

.about-lead {
    font-size: 1.4rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 25px;
    line-height: 1.6;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--color-charcoal-light);
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-location {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 30px;
    color: var(--color-charcoal);
    font-weight: 500;
}

.about-location svg {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
}

.about-skills {
    background: var(--color-cream);
    padding: 40px;
    border-radius: 24px;
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
    transition-delay: 0.2s;
}

.about-skills.animate {
    opacity: 1;
    transform: translateY(0);
}

.about-skills h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: var(--color-charcoal);
}

.skills-grid {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.skill-category h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-charcoal-light);
    margin-bottom: 12px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tags span {
    background: white;
    padding: 10px 18px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-charcoal);
    border: 1px solid var(--color-cream-dark);
    transition: var(--transition-bounce);
    cursor: default;
}

.skill-tags span:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-3px);
}

/* ============================================
   RESEARCH SECTION
   ============================================ */
.research {
    padding: var(--section-padding) 0;
    background: linear-gradient(180deg, var(--color-cream) 0%, white 100%);
}

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

.research-card {
    background: white;
    padding: 40px;
    border-radius: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-bounce);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px);
}

.research-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.research-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-smooth);
}

.research-card:hover::after {
    transform: scaleX(1);
}

.research-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.research-card.featured {
    grid-column: span 2;
    background: var(--gradient-hero);
    color: white;
}

.research-card.featured h3,
.research-card.featured p {
    color: white;
}

.research-card.featured .research-card-icon {
    background: rgba(255, 255, 255, 0.2);
}

.research-card.featured .research-link {
    color: var(--color-gold-light);
}

.research-card-icon {
    width: 60px;
    height: 60px;
    background: var(--color-cream);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    flex-shrink: 0;
}

.research-card-icon svg {
    width: 30px;
    height: 30px;
    color: var(--color-primary);
}

.research-card.featured .research-card-icon svg {
    color: white;
}

.research-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--color-charcoal);
}

.research-card p {
    color: var(--color-charcoal-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.research-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-accent);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.research-link:hover {
    gap: 12px;
}

.research-link span {
    transition: var(--transition-smooth);
}

/* ============================================
   PROJECTS SECTION
   ============================================ */
.projects {
    padding: var(--section-padding) 0;
    background: var(--color-charcoal);
    position: relative;
    overflow: hidden;
}


.projects .section-tag {
    background: var(--gradient-accent);
    color: white;
}

.projects .section-title {
    color: white;
}

.subsection-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin: 120px 0 32px;
    text-align: center;
}

.subsection-logo {
    width: 150px;
    height: auto;
    object-fit: contain;
}

.subsection-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: white;
}

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

.project-card {
    background: var(--color-charcoal-light);
    border-radius: 24px;
    overflow: hidden;
    transition: var(--transition-bounce);
    opacity: 0;
    transform: translateY(40px);
}

.project-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.project-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

.project-image {
    height: 220px;
    position: relative;
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-slow);
}

.project-placeholder.vr {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.project-placeholder.ar {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.project-placeholder.lab {
    background: white;
}

.project-logo {
    width: 40%;
    height: auto;
    object-fit: contain;
}

.project-card:hover .project-placeholder {
    transform: scale(1.1);
}

.project-placeholder svg {
    width: 60px;
    height: 60px;
    color: rgba(255, 255, 255, 0.8);
}

.project-content {
    padding: 30px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.project-tags span {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
}

.project-card h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    color: white;
    margin-bottom: 12px;
}

.project-card > .project-content > p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.project-highlights {
    list-style: none;
}

.project-highlights li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.project-highlights li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* ============================================
   PUBLICATIONS SECTION
   ============================================ */
.publications {
    padding: var(--section-padding) 0;
    background: white;
}

.publications-list {
    max-width: 900px;
    margin: 0 auto;
}

.publication-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 30px;
    padding: 35px 0;
    border-bottom: 1px solid var(--color-cream-dark);
    opacity: 0;
    transform: translateX(-30px);
    transition: var(--transition-smooth);
}

.publication-item.animate {
    opacity: 1;
    transform: translateX(0);
}

.publication-item:hover {
    background: var(--color-cream);
    margin: 0 -30px;
    padding: 35px 30px;
    border-radius: 16px;
    border-bottom-color: transparent;
}

.pub-year {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--color-primary);
    font-weight: 700;
}

.pub-title-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 10px;
}

.pub-title-row h4 {
    margin-bottom: 0;
}

.pub-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: 6px;
    background: var(--color-primary);
    color: white;
    transition: background 0.2s ease, transform 0.2s ease;
    margin-top: 2px;
}

.pub-link:hover {
    background: var(--color-accent);
    transform: scale(1.1);
}

.pub-link svg {
    stroke: white;
}

.pub-content h4 {
    font-size: 1.1rem;
    color: var(--color-charcoal);
    margin-bottom: 10px;
    line-height: 1.5;
    font-weight: 600;
}

.pub-authors {
    font-size: 0.95rem;
    color: var(--color-charcoal-light);
    margin-bottom: 6px;
}

.pub-authors strong {
    color: var(--color-accent);
}

.pub-venue {
    font-size: 0.9rem;
    color: var(--color-brown);
    font-style: italic;
}

.pub-status,
.pub-award {
    display: inline-block;
    margin-top: 12px;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pub-status {
    background: var(--color-cream);
    color: var(--color-charcoal-light);
}

.pub-award {
    background: var(--gradient-gold);
    color: var(--color-charcoal);
}

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

.publications-footer .btn-outline svg {
    transition: var(--transition-smooth);
}

.publications-footer .btn-outline:hover svg {
    transform: translate(3px, -3px);
}

/* ============================================
   TEACHING SECTION
   ============================================ */
.teaching {
    padding: var(--section-padding) 0;
    padding-top: 120px;
    background: var(--color-cream);
}

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

.services {
    padding: var(--section-padding) 0;
    background: var(--color-cream);
}

.services .pub-content h4 {
    font-weight: 400;
}

.services .pub-content h4 strong {
    color: #A63628;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

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

.teaching-card {
    background: white;
    padding: 35px;
    border-radius: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-bounce);
    position: relative;
    opacity: 0;
    transform: translateY(30px);
}

.teaching-card.animate {
    opacity: 1;
    transform: translateY(0);
}

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

.teaching-card.current {
    border: 2px solid var(--color-primary);
}

.teaching-badge {
    position: absolute;
    top: -12px;
    right: 25px;
    background: var(--gradient-accent);
    color: white;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.teaching-card h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--color-charcoal);
    margin-bottom: 8px;
}

.teaching-org {
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 4px;
}

.teaching-period {
    color: var(--color-charcoal-light);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.teaching-courses h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-charcoal-light);
    margin-bottom: 12px;
}

.teaching-courses {
    position: relative;
}

.teaching-courses ul {
    list-style: none;
    max-height: 200px;
    overflow-y: auto;
}

.teaching-courses ul::-webkit-scrollbar {
    width: 4px;
}

.teaching-courses ul::-webkit-scrollbar-thumb {
    background: var(--color-accent);
    border-radius: 4px;
}

.teaching-courses.scrollable::after {
    content: '↓ scroll for more';
    display: block;
    text-align: center;
    font-size: 0.75rem;
    color: var(--color-charcoal-light);
    margin-top: 8px;
    opacity: 0.6;
}

.teaching-courses li {
    padding: 8px 0;
    border-bottom: 1px solid var(--color-cream);
    font-size: 0.95rem;
    color: #A63628;
    font-weight: 500;
    padding-left: 16px;
    position: relative;
}

.teaching-courses li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 16px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
}

.course-code {
    text-decoration: underline;
}

.teaching-courses li:last-child {
    border-bottom: none;
}

/* ============================================
   AWARDS SECTION
   ============================================ */
.awards {
    padding: var(--section-padding) 0;
    background: white;
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.award-card {
    background: var(--color-cream);
    padding: 35px;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition-bounce);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: scale(0.9);
}

.award-card.animate {
    opacity: 1;
    transform: scale(1);
}

.award-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-gold);
    opacity: 0;
    transition: var(--transition-smooth);
}

.award-card:hover::before {
    opacity: 0.1;
}

.award-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.award-card.highlight {
    background: var(--gradient-hero);
    color: white;
}

.award-card.highlight h3,
.award-card.highlight p {
    color: white;
}

.award-card.highlight .award-icon {
    background: rgba(255, 255, 255, 0.2);
}

.award-card.highlight .award-icon svg {
    color: white;
}

.award-card.highlight .award-year {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.award-icon {
    width: 70px;
    height: 70px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    position: relative;
    z-index: 1;
}

.award-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-gold);
}

.award-icon.paper svg {
    color: var(--color-accent);
}

.award-icon.poster svg {
    color: var(--color-primary);
}

.award-icon.scholarship svg {
    color: var(--color-brown);
}

.award-card h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    color: var(--color-charcoal);
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}

.award-card p {
    font-size: 0.9rem;
    color: var(--color-charcoal-light);
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.award-year {
    display: inline-block;
    background: var(--color-cream-dark);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-charcoal);
    position: relative;
    z-index: 1;
}

/* ============================================
   EXPERIENCE TIMELINE
   ============================================ */
.experience {
    padding: var(--section-padding) 0;
    background: var(--color-cream);
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-hero);
    border-radius: 3px;
}

.timeline-item {
    padding-left: 50px;
    padding-bottom: 50px;
    position: relative;
    opacity: 0;
    transform: translateX(-30px);
}

.timeline-item.animate {
    opacity: 1;
    transform: translateX(0);
}

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

.timeline-marker {
    position: absolute;
    left: -8px;
    top: 5px;
    width: 20px;
    height: 20px;
    background: var(--color-accent);
    border-radius: 50%;
    border: 4px solid var(--color-cream);
    box-shadow: var(--shadow-md);
    transition: var(--transition-bounce);
}

.timeline-item:hover .timeline-marker {
    transform: scale(1.3);
    box-shadow: var(--shadow-glow);
}

.timeline-content {
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    position: relative;
}

.timeline-logo {
    width: 60px;
    height: auto;
    position: absolute;
    top: 30px;
    right: 30px;
}

.timeline-item:hover .timeline-content {
    box-shadow: var(--shadow-lg);
    transform: translateX(10px);
}

.timeline-date {
    display: inline-block;
    background: var(--gradient-gold);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.timeline-badge {
    display: inline-block;
    background: var(--color-primary);
    color: white;
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 8px;
    vertical-align: middle;
}

.timeline-content h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--color-charcoal);
    margin-bottom: 6px;
}

.timeline-org {
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 12px;
}

.timeline-content > p:last-child {
    color: var(--color-charcoal-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ============================================
   NEWS SECTION
   ============================================ */
.news {
    padding: var(--section-padding) 0;
    background: var(--color-cream);
}

.news-image {
    width: 100%;
    height: 200px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 4px;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 28px;
}

.news-card {
    background: white;
    border-radius: 20px;
    padding: 32px;
    box-shadow: var(--shadow-md);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition: var(--transition-bounce);
    border-left: 4px solid var(--color-primary);
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.news-source {
    background: var(--color-primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 50px;
}

.news-date {
    font-size: 0.85rem;
    color: var(--color-charcoal-light);
}

.news-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--color-charcoal);
    line-height: 1.4;
}

.news-desc {
    font-size: 0.9rem;
    color: var(--color-charcoal-light);
    line-height: 1.6;
}

.news-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-top: auto;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    padding: var(--section-padding) 0;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.contact-text .section-tag {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.contact-text .section-title {
    color: white;
    text-align: left;
}

.contact-text p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-top: 20px;
}

.contact-cards {
    display: flex;
    flex-wrap: nowrap;
    gap: 15px;
    justify-content: center;
}

.contact-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 18px 24px;
    border-radius: 14px;
    text-decoration: none;
    text-align: center;
    transition: var(--transition-bounce);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-card:hover {
    background: white;
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    transition: var(--transition-smooth);
}

.contact-card:hover .contact-icon {
    background: var(--gradient-accent);
}

.contact-icon svg {
    width: 28px;
    height: 28px;
    color: white;
    transition: var(--transition-smooth);
}

.contact-card:hover .contact-icon svg {
    color: white;
}

.contact-card h4 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: white;
    margin-bottom: 6px;
    transition: var(--transition-smooth);
}

.contact-card:hover h4 {
    color: var(--color-charcoal);
}

.contact-card p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-smooth);
}

.contact-card:hover p {
    color: var(--color-charcoal-light);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-charcoal);
    padding: 40px 0;
}

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

.footer-content p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
}

.footer-location {
    margin-top: 8px;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Staggered animation delays for grid items */
.research-card:nth-child(1) { transition-delay: 0.1s; }
.research-card:nth-child(2) { transition-delay: 0.2s; }
.research-card:nth-child(3) { transition-delay: 0.3s; }
.research-card:nth-child(4) { transition-delay: 0.4s; }

.project-card:nth-child(1) { transition-delay: 0.1s; }
.project-card:nth-child(2) { transition-delay: 0.2s; }
.project-card:nth-child(3) { transition-delay: 0.3s; }
.project-card:nth-child(4) { transition-delay: 0.4s; }

.publication-item:nth-child(1) { transition-delay: 0.1s; }
.publication-item:nth-child(2) { transition-delay: 0.15s; }
.publication-item:nth-child(3) { transition-delay: 0.2s; }
.publication-item:nth-child(4) { transition-delay: 0.25s; }
.publication-item:nth-child(5) { transition-delay: 0.3s; }
.publication-item:nth-child(6) { transition-delay: 0.35s; }

.teaching-card:nth-child(1) { transition-delay: 0.1s; }
.teaching-card:nth-child(2) { transition-delay: 0.2s; }
.teaching-card:nth-child(3) { transition-delay: 0.3s; }

.award-card:nth-child(1) { transition-delay: 0.1s; }
.award-card:nth-child(2) { transition-delay: 0.15s; }
.award-card:nth-child(3) { transition-delay: 0.2s; }
.award-card:nth-child(4) { transition-delay: 0.25s; }
.award-card:nth-child(5) { transition-delay: 0.3s; }
.award-card:nth-child(6) { transition-delay: 0.35s; }

.timeline-item:nth-child(1) { transition-delay: 0.1s; }
.timeline-item:nth-child(2) { transition-delay: 0.2s; }
.timeline-item:nth-child(3) { transition-delay: 0.3s; }
.timeline-item:nth-child(4) { transition-delay: 0.4s; }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .hero-visual {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }

    .hero-card {
        padding: 20px;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .research-card.featured {
        grid-column: span 1;
    }

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

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

    .contact-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .contact-text .section-title {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-menu,
    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-content {
        flex-direction: column;
        gap: 40px;
        align-items: center;
    }

    .hero-photo-col {
        width: 100%;
    }

    .hero-about {
        width: 100%;
        text-align: left;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

    .hero-stats {
        flex-wrap: wrap;
        gap: 30px;
    }

    .research-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }

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

    .contact-cards {
        grid-template-columns: 1fr;
    }

    .publication-item {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .pub-year {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .section-title {
        font-size: 1.8rem;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}