/* ===== CSS Variables & Reset ===== */
:root {
    --primary: #C41E3A;
    --primary-dark: #9B1B30;
    --primary-light: #E8344F;
    --secondary: #1A5276;
    --secondary-light: #2471A3;
    --accent: #2E86C1;
    --dark: #1a1a2e;
    --dark-light: #2d2d44;
    --text: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --bg: #ffffff;
    --bg-alt: #f8f9fc;
    --bg-card: #ffffff;
    --border: #e8ecf1;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

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

body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition);
    padding: 12px 0;
}

.navbar.scrolled {
    border-bottom-color: var(--border);
    box-shadow: var(--shadow-sm);
    padding: 8px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo img {
    height: 50px;
    width: auto;
    transition: height var(--transition);
}

.navbar.scrolled .nav-logo img {
    height: 40px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-light);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #fdfbfb 0%, #f0e6ea 25%, #ebedee 50%, #e8f0f8 100%);
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(196, 30, 58, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(26, 82, 118, 0.05) 0%, transparent 50%);
}

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

.hero-subtitle {
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--primary);
    margin-bottom: 12px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.8rem;
    font-weight: 700;
    line-height: 1.15;
    color: var(--dark);
    margin-bottom: 8px;
}

.hero-title span {
    color: var(--primary);
}

.hero-credentials {
    font-size: 1.05rem;
    color: var(--secondary);
    font-weight: 500;
    margin-bottom: 8px;
}

.hero-tagline {
    font-size: 1.4rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 16px;
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-light);
    max-width: 520px;
    margin-bottom: 32px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 36px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    font-family: var(--font-heading);
}

.stat-plus {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    display: block;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-weight: 500;
}

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo-wrapper {
    width: 420px;
    height: 420px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.7);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    animation: float 6s ease-in-out infinite;
}

.hero-logo-wrapper img {
    width: 85%;
    height: 85%;
    object-fit: contain;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.hero-scroll a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    color: var(--primary);
    animation: bounce 2s infinite;
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-xl);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-body);
}

.btn-primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(196, 30, 58, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--secondary);
    border-color: var(--secondary);
}

.btn-outline:hover {
    background: var(--secondary);
    color: white;
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* ===== Sections ===== */
.section {
    padding: 100px 0;
}

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.section-title span {
    color: var(--primary);
}

.section-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    margin: 0 auto;
    border-radius: 3px;
}

.section-subtitle {
    margin-top: 16px;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.section-subtitle a {
    color: var(--accent);
    font-weight: 500;
}

.section-subtitle a:hover {
    text-decoration: underline;
}

/* ===== About Section ===== */
.about-top {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 50px;
    align-items: center;
    margin-bottom: 50px;
}

.about-photo {
    display: flex;
    justify-content: center;
}

.about-photo-wrapper {
    width: 280px;
    height: 340px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 4px solid white;
    position: relative;
}

.about-photo-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    display: block;
    transition: transform 0.5s ease;
}

.about-photo-wrapper:hover img {
    transform: scale(1.03);
}

.about-name {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--dark);
    margin-bottom: 6px;
}

.about-designation {
    font-size: 1rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 12px;
}

.about-role,
.about-institution {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.about-role i,
.about-institution i {
    color: var(--accent);
    width: 18px;
    text-align: center;
    flex-shrink: 0;
}

.about-divider {
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 3px;
    margin: 20px 0;
}

.about-summary {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.75;
    margin-bottom: 20px;
}

.about-languages {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.lang-tag {
    padding: 6px 18px;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    color: white;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 500;
}

/* Credentials Row */
.about-bottom {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.credential-card {
    background: var(--bg-card);
    padding: 28px 20px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.credential-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(196, 30, 58, 0.15);
}

.credential-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(196, 30, 58, 0.08);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin: 0 auto 14px;
}

.credential-card h4 {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    color: var(--dark);
    margin-bottom: 6px;
}

.credential-card p {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ===== Timeline ===== */
.timeline-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
}

.tab-btn {
    padding: 12px 36px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-body);
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-xl);
    cursor: pointer;
    color: var(--text-light);
    transition: all var(--transition);
}

.tab-btn.active,
.tab-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
}

.timeline-item {
    position: relative;
    margin-bottom: 36px;
}

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

.timeline-marker {
    position: absolute;
    left: -33px;
    top: 8px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg-alt);
    z-index: 1;
}

.timeline-marker.edu {
    background: var(--accent);
}

.timeline-content {
    background: var(--bg-card);
    padding: 28px 32px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.timeline-date {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--primary);
    background: rgba(196, 30, 58, 0.08);
    padding: 4px 14px;
    border-radius: var(--radius-xl);
    margin-bottom: 10px;
}

.timeline-content h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    color: var(--dark);
    margin-bottom: 4px;
}

.timeline-content h4 {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ===== Expertise Cards ===== */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.expertise-card {
    background: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all var(--transition);
    text-align: center;
}

.expertise-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(196, 30, 58, 0.2);
}

.expertise-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
}

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

.expertise-card.featured h3 {
    color: white;
}

.expertise-card.featured p {
    color: rgba(255, 255, 255, 0.9);
}

.expertise-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(196, 30, 58, 0.08);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 20px;
    transition: all var(--transition);
}

.expertise-card:hover .expertise-icon {
    transform: scale(1.1);
}

.expertise-card h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--dark);
    margin-bottom: 12px;
}

.expertise-card p {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== Publications ===== */
.publications-filter {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 24px;
    font-size: 0.88rem;
    font-weight: 600;
    font-family: var(--font-body);
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-xl);
    cursor: pointer;
    color: var(--text-light);
    transition: all var(--transition);
}

.filter-btn.active,
.filter-btn:hover {
    background: var(--secondary);
    border-color: var(--secondary);
    color: white;
}

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

.publication-item {
    display: flex;
    gap: 20px;
    padding: 28px 0;
    border-bottom: 1px solid var(--border);
    animation: fadeInUp 0.4s ease;
}

.publication-item:first-child {
    padding-top: 0;
}

.publication-item.hidden {
    display: none;
}

.pub-year {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: var(--secondary);
    color: white;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
}

.pub-content h4 {
    font-family: var(--font-heading);
    font-size: 1.02rem;
    color: var(--dark);
    margin-bottom: 6px;
    line-height: 1.4;
}

.pub-authors {
    font-size: 0.88rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

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

.pub-journal {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.pub-doi {
    font-size: 0.82rem;
    color: var(--accent);
    font-weight: 500;
    display: inline-block;
}

.pub-doi:hover {
    text-decoration: underline;
}

/* ===== Awards ===== */
.awards-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.award-card {
    background: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    text-align: center;
    transition: all var(--transition);
}

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

.award-icon {
    font-size: 2rem;
    color: #f39c12;
    margin-bottom: 16px;
}

.award-card h4 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    color: var(--dark);
    margin-bottom: 10px;
}

.award-card p {
    font-size: 0.88rem;
    color: var(--text-light);
}

/* ===== Presentations ===== */
.presentations-year-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    text-align: center;
    color: var(--dark);
    margin-bottom: 36px;
}

.presentations-grid {
    max-width: 900px;
    margin: 0 auto;
}

.presentation-year-group {
    margin-bottom: 40px;
}

.year-label {
    display: inline-block;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    background: rgba(196, 30, 58, 0.08);
    padding: 6px 20px;
    border-radius: var(--radius-xl);
    margin-bottom: 16px;
}

.presentation-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.presentation-card {
    background: var(--bg-card);
    padding: 20px 24px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    transition: all var(--transition);
}

.presentation-card:hover {
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.presentation-card h5 {
    font-size: 0.92rem;
    color: var(--dark);
    margin-bottom: 4px;
}

.presentation-card p {
    font-size: 0.85rem;
    color: var(--text-light);
}

.presentation-card strong {
    color: var(--secondary);
}

/* ===== Contact ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 12px;
}

.contact-info > p {
    color: var(--text-light);
    margin-bottom: 32px;
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-item i {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(196, 30, 58, 0.08);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.1rem;
}

.contact-item h4 {
    font-size: 0.88rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 2px;
}

.contact-item a,
.contact-item p {
    font-size: 0.95rem;
    color: var(--text);
    font-weight: 500;
}

.contact-item a:hover {
    color: var(--primary);
}

.contact-form-wrapper {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
}

.form-group {
    margin-bottom: 18px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 20px;
    font-size: 0.92rem;
    font-family: var(--font-body);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--text);
    transition: all var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

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

/* ===== Footer ===== */
.footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 0.5fr;
    gap: 40px;
    align-items: start;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    height: 60px;
    width: auto;
    margin-bottom: 12px;
}

.footer-brand p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    max-width: 320px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition);
}

.footer-links a:hover {
    color: white;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    transition: all var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding: 24px 0;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

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

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }

    .hero-content {
        gap: 40px;
    }

    .hero-logo-wrapper {
        width: 340px;
        height: 340px;
    }

    .about-bottom {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .expertise-card.featured {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    html { font-size: 15px; }

    .nav-toggle { display: flex; }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: white;
        flex-direction: column;
        padding: 80px 24px 24px;
        box-shadow: var(--shadow-xl);
        transition: right var(--transition);
        gap: 4px;
    }

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

    .nav-link {
        padding: 12px 16px;
        font-size: 1rem;
        width: 100%;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-title {
        font-size: 2.6rem;
    }

    .hero-description {
        margin: 0 auto 32px;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-image { order: -1; }

    .hero-logo-wrapper {
        width: 260px;
        height: 260px;
    }

    .about-top {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }

    .about-photo {
        justify-content: center;
    }

    .about-photo-wrapper {
        width: 220px;
        height: 270px;
        margin: 0 auto;
    }

    .about-role,
    .about-institution {
        justify-content: center;
    }

    .about-divider {
        margin: 20px auto;
    }

    .about-languages {
        justify-content: center;
    }

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

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

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

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

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

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

    .footer-brand p {
        max-width: 100%;
    }

    .footer-social {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .about-bottom {
        grid-template-columns: 1fr;
    }

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

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

    .section {
        padding: 60px 0;
    }

    .contact-form-wrapper {
        padding: 24px;
    }

    .timeline {
        padding-left: 30px;
    }

    .timeline-content {
        padding: 20px;
    }
}