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

:root {
    --primary-color: #7c3aed;
    --primary-light: #a78bfa;
    --bg-light: #f3e8ff;
    --bg-gradient: linear-gradient(135deg, #f3e8ff 0%, #dbeafe 100%);
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --white: #ffffff;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    background-color: var(--white);
    line-height: 1.6;
}

/* Navigation */
.navbar {
    background-color: var(--white);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-dark);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

.contact-btn {
    background-color: var(--primary-color);
    color: var(--white) !important;
    padding: 0.6rem 1.5rem;
    border-radius: 0.5rem;
    transition: background-color 0.3s ease;
}

.contact-btn:hover {
    background-color: #6d28d9;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #faf5ff 0%, #f7f1ff 15%, #f0f9ff 30%, #f5f3ff 50%, #f9f5ff 70%, #f5f8ff 85%, #faf5ff 100%);
    background-size: 400% 400%;
    animation: gradientShift 20s ease infinite;
    padding: 4rem 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 800px 800px at 0% 20%, rgba(124, 58, 237, 0.12) 0%, transparent 40%),
        radial-gradient(ellipse 800px 600px at 100% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 40%),
        radial-gradient(ellipse 600px 600px at 50% 100%, rgba(168, 85, 247, 0.08) 0%, transparent 50%);
    pointer-events: none;
    animation: floatShapes 25s ease-in-out infinite;
    filter: blur(80px);
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.05) 50%, transparent 70%),
        linear-gradient(-45deg, transparent 30%, rgba(255, 255, 255, 0.03) 50%, transparent 70%);
    pointer-events: none;
    animation: shimmer 8s ease-in-out infinite;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    25% {
        background-position: 50% 0%;
    }
    50% {
        background-position: 100% 50%;
    }
    75% {
        background-position: 50% 100%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes floatShapes {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(15px, -20px) scale(1.05);
    }
    50% {
        transform: translate(-15px, 15px) scale(0.95);
    }
    75% {
        transform: translate(20px, 10px) scale(1.02);
    }
}

@keyframes shimmer {
    0%, 100% {
        opacity: 0.5;
        transform: translateX(-100%);
    }
    50% {
        opacity: 1;
        transform: translateX(100%);
    }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    padding: 2rem 0;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
    line-height: 1.2;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-description strong {
    color: var(--text-dark);
    text-decoration: underline;
    text-decoration-color: var(--primary-light);
    text-underline-offset: 2px;
}

/* Buttons */
.btn {
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

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

.btn-primary:hover {
    background-color: #6d28d9;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(124, 58, 237, 0.3);
}

/* Hero Image */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    width: 100%;
    max-width: 400px;
    border-radius: 1rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    object-fit: cover;
}

/* Sections */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 4rem 0;
}

section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

section p {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* About Hero Section */
.about-hero {
    background: var(--white);
    padding: 5rem 0;
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-hero-wrapper {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.about-section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--text-dark);
    margin: 0;
    text-align: left;
}

.about-hero-container {
    max-width: 100%;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: center;
}

/* Profile Card */
.about-profile-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.profile-image-wrapper {
    width: 100%;
    max-width: 380px;
    border-radius: 2rem;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(124, 58, 237, 0.15);
    transition: all 0.3s ease;
    background: var(--white);
    aspect-ratio: 1;
}

.profile-image-wrapper:hover {
    box-shadow: 0 30px 80px rgba(124, 58, 237, 0.25);
    transform: translateY(-5px);
}

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

/* Social Icons */
.social-icons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.social-icon {
    width: 48px;
    height: 48px;
    border-radius: 1rem;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dark);
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border: 2px solid transparent;
}

.social-icon svg {
    width: 24px;
    height: 24px;
}

.social-icon:hover {
    color: var(--primary-color);
    background: linear-gradient(135deg, rgba(167, 139, 250, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(124, 58, 237, 0.2);
    border-color: var(--primary-light);
}

/* About Text Content */
.about-text-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-hero-headline {
    font-size: 3rem;
    font-weight: 900;
    color: var(--text-dark);
    line-height: 1.2;
    margin: 0;
}

.highlight {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-description {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.8;
    margin: 0;
}

.about-description-secondary {
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.7;
    margin: 0;
    opacity: 0.9;
}

/* Research Interests */
.research-interests {
    margin: 2rem 0;
}

.interests-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin: 0 0 1rem 0;
}

.interests-list {
    list-style: disc;
    padding-left: 1rem;
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.8;
}

.interests-list li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

/* Buttons Container */
.about-buttons {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

/* Primary Button */
.btn-primary-filled {
    background: linear-gradient(135deg, var(--primary-color) 0%, #6d28d9 100%);
    color: var(--white);
    padding: 1rem 2.5rem;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 25px rgba(124, 58, 237, 0.3);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary-filled:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(124, 58, 237, 0.4);
    background: linear-gradient(135deg, #6d28d9 0%, #5b21b6 100%);
}

.btn-primary-filled:active {
    transform: translateY(-1px);
}

/* Secondary Button (Outlined) */
.btn-secondary-outlined {
    background: transparent;
    color: var(--primary-color);
    padding: 1rem 2.5rem;
    border: 2px solid var(--primary-color);
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.btn-secondary-outlined:hover {
    background: linear-gradient(135deg, rgba(167, 139, 250, 0.1) 0%, rgba(124, 58, 237, 0.05) 100%);
    border-color: #6d28d9;
    color: #6d28d9;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(124, 58, 237, 0.15);
}

.btn-secondary-outlined:active {
    transform: translateY(-1px);
}

.download-icon {
    display: inline-flex;
    animation: float 2s ease-in-out infinite;
    font-size: 1.2rem;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-4px);
    }
}

/* Publications Section */
.publications {
    background-color: var(--white);
    padding: 5rem 0;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.publications-list {
    list-style: disc;
    padding-left: 2rem;
    margin-top: 2rem;
}

.publications-list li {
    font-size: 0.95rem;
    color: var(--text-dark);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.pub-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.pub-link:hover {
    color: #6d28d9;
}

/* Experience Section */
.experience {
    background-color: var(--white);
    padding: 5rem 0;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.experience-list {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.experience-item {
    padding: 0;
    background-color: transparent;
    border-left: none;
    border-radius: 0;
}

.experience-item:hover {
    box-shadow: none;
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 0.5rem;
    gap: 1rem;
}

.experience-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

.experience-date {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 500;
    white-space: nowrap;
}

.experience-company {
    font-size: 0.95rem;
    color: var(--primary-color);
    font-weight: 500;
    margin: 0.25rem 0 0.75rem 0;
}

.experience-details {
    list-style: none;
    padding: 0;
    margin: 0;
}

.experience-details li {
    font-size: 0.9rem;
    color: var(--text-dark);
    line-height: 1.6;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.experience-details li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Recent News Section */
.recent-news {
    background-color: var(--white);
    padding: 5rem 0;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.news-list {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.news-item {
    display: flex;
    gap: 2rem;
    padding-bottom: 0;
    align-items: flex-start;
}

.news-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.news-date {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-color);
    min-width: 80px;
    flex-shrink: 0;
    margin-top: 0.15rem;
}

.news-content h3 {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--text-dark);
    margin: 0;
}

.news-content p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}


/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hero-container {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }

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

    .hero-description {
        font-size: 1rem;
    }

    .hero-image img {
        max-width: 300px;
    }

    .nav-logo {
        font-size: 1.2rem;
    }

    .logo-icon {
        width: 35px;
        height: 35px;
    }

    section h2 {
        font-size: 2rem;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }

    /* About Hero Responsive */
    .about-hero {
        padding: 3rem 0;
        min-height: auto;
    }

    .about-hero-wrapper {
        padding: 0 1rem;
    }

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

    .about-hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        padding: 0;
    }

    .about-hero-headline {
        font-size: 2.2rem;
    }

    .about-description {
        font-size: 1rem;
    }

    .about-buttons {
        flex-direction: column;
        gap: 1rem;
    }

    .btn-primary-filled,
    .btn-secondary-outlined {
        width: 100%;
        justify-content: center;
        padding: 0.9rem 2rem;
    }

    .profile-image-wrapper {
        max-width: 300px;
    }

    .social-icons {
        gap: 1rem;
    }

    .social-icon {
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .nav-menu {
        display: none;
    }

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

    .hero-description {
        font-size: 0.95rem;
    }

    section h2 {
        font-size: 1.75rem;
    }

    .btn {
        padding: 0.7rem 1.5rem;
        font-size: 0.95rem;
    }

    /* About Hero Mobile */
    .about-hero-headline {
        font-size: 1.8rem;
    }

    .about-section-title {
        font-size: 1.75rem;
    }

    .about-description {
        font-size: 0.95rem;
    }

    .about-description-secondary {
        font-size: 0.9rem;
    }

    .about-buttons {
        gap: 0.75rem;
    }

    .btn-primary-filled,
    .btn-secondary-outlined {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .profile-image-wrapper {
        max-width: 250px;
    }

    .social-icon {
        width: 40px;
        height: 40px;
    }

    .social-icon svg {
        width: 20px;
        height: 20px;
    }
}

/* Footer */
.footer {
    margin-top: 4rem;
    padding: 2rem;
    text-align: center;
}

.footer p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin: 0;
}