/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0f1a;
    --bg-secondary: #0f1526;
    --bg-card: #141c2e;
    --bg-card-hover: #1a2540;
    --text-primary: #e4e8f1;
    --text-secondary: #8892a8;
    --text-muted: #5a6478;
    --accent: #00d4ff;
    --accent-dim: rgba(0, 212, 255, 0.15);
    --accent-glow: rgba(0, 212, 255, 0.3);
    --border: #1e2a42;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --radius: 10px;
    --radius-sm: 6px;
    --transition: 0.3s ease;
    --max-width: 1100px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: #fff;
}

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

ul {
    list-style: none;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 15, 26, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition), background var(--transition);
}

.navbar.scrolled {
    border-bottom-color: var(--border);
    background: rgba(10, 15, 26, 0.95);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.nav-logo:hover {
    color: var(--text-primary);
}

.accent {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.3px;
    position: relative;
    padding: 4px 0;
}

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

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

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

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 70px;
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 100%);
}

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

.hero-greeting {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.95rem;
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.hero-name {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero-typing {
    font-family: var(--font-mono);
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    height: 1.7em;
    display: flex;
    align-items: center;
}

.typing-prefix {
    color: var(--accent);
    margin-right: 4px;
}

.typing-cursor {
    animation: blink 1s step-end infinite;
    color: var(--accent);
    margin-left: 2px;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-description {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 540px;
    margin-bottom: 32px;
    line-height: 1.75;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.3px;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background: #33ddff;
    color: var(--bg-primary);
    box-shadow: 0 0 24px var(--accent-glow);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
}

/* Hero Photo */
.hero-image {
    flex-shrink: 0;
}

.hero-photo-wrapper {
    position: relative;
    width: 280px;
    height: 280px;
}

.hero-photo {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--border);
    position: relative;
    z-index: 1;
}

.hero-photo-border {
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 2px solid var(--accent);
    opacity: 0.3;
    animation: pulse-ring 3s ease-in-out infinite;
}

@keyframes pulse-ring {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.03); opacity: 0.15; }
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--accent);
    border-bottom: 2px solid var(--accent);
    transform: rotate(45deg);
    opacity: 0.4;
    animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
    0%, 100% { transform: rotate(45deg) translateY(0); opacity: 0.4; }
    50% { transform: rotate(45deg) translateY(8px); opacity: 0.8; }
}

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

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

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 48px;
    letter-spacing: -0.5px;
}

.section-title .accent {
    font-family: var(--font-mono);
    font-weight: 400;
    margin-right: 8px;
}

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 1.02rem;
}

.about-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.detail-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
    transition: border-color var(--transition);
}

.detail-card:hover {
    border-color: var(--accent);
}

.detail-icon {
    font-size: 1.4rem;
    flex-shrink: 0;
}

.detail-card h4 {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.detail-card p {
    font-size: 0.92rem;
    color: var(--text-primary);
}

.languages-section h3 {
    font-size: 1rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
    font-weight: 500;
}

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

.tag {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.tag:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.tag small {
    color: var(--text-muted);
    font-size: 0.78rem;
    margin-left: 4px;
}

.tag-highlight {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-dim);
}

/* ===== Research ===== */
.research-current {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px;
    margin-bottom: 48px;
    position: relative;
}

.research-badge {
    display: inline-block;
    background: var(--accent-dim);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 500;
    padding: 4px 14px;
    border-radius: 50px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.research-current h3 {
    font-size: 1.4rem;
    margin-bottom: 14px;
}

.research-current > p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    max-width: 700px;
}

.research-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.tech-tag {
    background: rgba(0, 212, 255, 0.08);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 5px 14px;
    border-radius: 4px;
    border: 1px solid rgba(0, 212, 255, 0.15);
}

.research-future {
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

.research-future h4 {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.research-future p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.research-interests {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
}

.interests-group h3 {
    font-size: 1rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
    font-weight: 500;
}

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

.interest-tag {
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition);
}

.interest-tag.primary {
    background: var(--accent-dim);
    color: var(--accent);
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.interest-tag.primary:hover {
    background: rgba(0, 212, 255, 0.25);
}

.interest-tag.secondary {
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.interest-tag.secondary:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

/* ===== Projects ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: all var(--transition);
    position: relative;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
    border-radius: var(--radius) var(--radius) 0 0;
    opacity: 0;
    transition: opacity var(--transition);
}

.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.project-card:hover::before {
    opacity: 1;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.project-icon {
    font-size: 2rem;
}

.project-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin-bottom: 20px;
    line-height: 1.7;
}

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

.project-tags span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.04);
    padding: 4px 10px;
    border-radius: 4px;
}

/* Featured Project Card */
.project-card.featured {
    border-color: rgba(0, 212, 255, 0.3);
    background: linear-gradient(135deg, var(--bg-card), rgba(0, 212, 255, 0.05));
}

.project-card.featured::before {
    opacity: 1;
}

.project-status {
    display: inline-block;
    background: rgba(50, 205, 50, 0.12);
    color: #50d050;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    padding: 3px 12px;
    border-radius: 50px;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
    border: 1px solid rgba(50, 205, 50, 0.2);
}

.project-link-btn {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent);
    background: var(--accent-dim);
    padding: 4px 12px;
    border-radius: 4px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: all var(--transition);
}

.project-link-btn:hover {
    background: rgba(0, 212, 255, 0.25);
    color: #fff;
}

.project-links {
    display: flex;
    gap: 8px;
}

/* ===== Education ===== */
.education-content {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.timeline {
    position: relative;
    padding-left: 32px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--border);
}

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

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

.timeline-dot {
    position: absolute;
    left: -37px;
    top: 8px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 2px var(--accent);
}

.section-alt .timeline-dot {
    border-color: var(--bg-secondary);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    display: block;
    margin-bottom: 6px;
}

.timeline-content h3 {
    font-size: 1.15rem;
    margin-bottom: 4px;
}

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

.timeline-content > p:last-child {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.cv-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.cv-icon {
    font-size: 2.5rem;
}

.cv-card h3 {
    font-size: 1.2rem;
}

.cv-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.coursework-section h3 {
    font-size: 1rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
    font-weight: 500;
}

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

.coursework-tags span {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.coursework-tags span:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

/* ===== Certifications ===== */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 48px;
}

.cert-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all var(--transition);
}

.cert-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.cert-provider {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.cert-card h4 {
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1.5;
}

.distinctions h3 {
    font-size: 1rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
    font-weight: 500;
}

.distinction-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.distinction-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.distinction-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
}

.distinction-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Community ===== */
.community-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.community-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: border-color var(--transition);
}

.community-card:hover {
    border-color: var(--accent);
}

.community-org {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.community-role {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.community-location {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 16px;
}

.community-list {
    list-style: none;
}

.community-list li {
    color: var(--text-secondary);
    font-size: 0.92rem;
    padding: 6px 0;
    padding-left: 18px;
    position: relative;
}

.community-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.5;
}

.community-card > p {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

/* ===== Goals ===== */
.goals-timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.goal-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: border-color var(--transition);
}

.goal-card:hover {
    border-color: var(--accent);
}

.goal-period {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 14px;
    font-weight: 500;
}

.goal-period small {
    color: var(--text-muted);
}

.goal-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

/* ===== Contact ===== */
.contact-intro {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 550px;
    margin-bottom: 40px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition);
}

.contact-link:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.contact-icon {
    font-size: 1.2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-form input,
.contact-form textarea {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.92rem;
    transition: border-color var(--transition);
    outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--accent);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-muted);
}

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

/* Form Success State */
.contact-form-wrapper {
    position: relative;
}

.form-success {
    display: none;
    text-align: center;
    padding: 48px 24px;
    animation: fadeUp 0.5s ease;
}

.form-success.show {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.success-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(0, 212, 255, 0.12);
    color: var(--accent);
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--accent);
    margin-bottom: 8px;
}

.form-success h3 {
    font-size: 1.4rem;
}

.form-success p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 360px;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Footer ===== */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-logo {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.85rem;
}

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

.footer-links a {
    color: var(--text-muted);
    transition: color var(--transition);
}

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

/* ===== Fade-in Animation ===== */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(10, 15, 26, 0.98);
        backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 24px;
        gap: 0;
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all 0.35s ease;
    }

    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-links a {
        padding: 14px 0;
        font-size: 1rem;
        display: block;
        border-bottom: 1px solid var(--border);
    }

    .nav-links li:last-child a {
        border-bottom: none;
    }

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

    .hero-image {
        order: -1;
    }

    .hero-photo-wrapper {
        width: 200px;
        height: 200px;
        margin: 0 auto;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

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

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

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

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

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

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

    .goals-timeline {
        grid-template-columns: 1fr;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .section {
        padding: 72px 0;
    }
}

@media (max-width: 480px) {
    .about-details {
        grid-template-columns: 1fr;
    }

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

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

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