:root {
    --bg-main: #0B0F19;
    --bg-secondary: #131A2A;
    --bg-card: #1C2333;
    
    --text-primary: #FFFFFF;
    --text-secondary: #A0AABF;
    
    --accent-primary: #6E56FF;
    --accent-secondary: #E948C5;
    
    --gradient-primary: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    --gradient-text: linear-gradient(90deg, #6E56FF, #E948C5);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
}

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

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 10px 20px -10px rgba(110, 86, 255, 0.5);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 25px -10px rgba(110, 86, 255, 0.7);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-light {
    background: white;
    color: var(--bg-main);
}

.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -10px rgba(255, 255, 255, 0.3);
}

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(11, 15, 25, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.logo strong {
    font-weight: 800;
}

.logo:hover {
    color: var(--accent-secondary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a:not(.btn) {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.nav-links a:not(.btn):hover,
.nav-links a:not(.btn).active {
    color: var(--text-primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 5rem;
    position: relative;
    overflow: hidden;
}

/* Background Gradients for Hero */
.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(110,86,255,0.15) 0%, rgba(11,15,25,0) 70%);
    border-radius: 50%;
    z-index: -1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 90%;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.stats-container {
    display: flex;
    gap: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
}

.stat-item h3 {
    font-size: 2rem;
    margin-bottom: 0.2rem;
}

.stat-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.blob-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: linear-gradient(135deg, rgba(110,86,255,0.2) 0%, rgba(233,72,197,0.2) 100%);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    z-index: -1;
    animation: morph 8s ease-in-out infinite;
}

@keyframes morph {
    0% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
    50% { border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%; }
    100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
}

.hero-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-lg);
    position: relative;
    z-index: 1;
}

/* Marquee */
.marquee-section {
    background: var(--bg-secondary);
    padding: 1.5rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    white-space: nowrap;
    position: relative;
}

.marquee-content {
    display: inline-flex;
    align-items: center;
    gap: 3rem;
    animation: marquee 20s linear infinite;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--text-secondary);
}

.marquee-content .dot {
    color: var(--accent-primary);
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Sections Common */
section {
    padding: 6rem 0;
}

.section-header {
    margin-bottom: 4rem;
}

.section-subtitle {
    color: var(--accent-primary);
    font-weight: 600;
    letter-spacing: 2px;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.section-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Experience Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 2.5rem;
    border: 1px solid rgba(255, 255, 255, 0.03);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.1);
}

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

.card-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.card h3 {
    margin-bottom: 1rem;
}

.card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

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

/* About Section */
.about-section {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: flex-start;
}

.about-image-wrapper {
    position: relative;
}

.about-image {
    width: 100%;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.experience-badge .years {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.experience-badge .text {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--text-secondary);
}

.quote {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--text-primary);
    border-left: 4px solid var(--accent-primary);
    padding-left: 1.5rem;
    margin-bottom: 2rem;
    line-height: 1.4;
}

.bio {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.subsection-title {
    margin-bottom: 1.5rem;
}

.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 2rem; }

.academic-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.academic-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.academic-list i {
    color: var(--accent-primary);
    margin-top: 0.3rem;
}

.roles-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.role-card {
    background: rgba(255, 255, 255, 0.03);
    padding: 1.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.role-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.role-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

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

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 2px;
    background: rgba(255, 255, 255, 0.1);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 3rem;
}

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

.timeline-dot {
    position: absolute;
    top: 0;
    left: 15px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-primary);
    border: 2px solid var(--bg-main);
    box-shadow: 0 0 0 4px rgba(110, 86, 255, 0.2);
}

.timeline-date {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-secondary);
    margin-bottom: 0.5rem;
}

.timeline-content {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.03);
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

.timeline-content h3 {
    margin-bottom: 0.3rem;
    font-size: 1.2rem;
}

.timeline-content h4 {
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 1rem;
    margin-bottom: 1rem;
}

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

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, rgba(110,86,255,0.1) 0%, rgba(233,72,197,0.1) 100%);
    position: relative;
    overflow: hidden;
}

.cta-section h2 {
    font-size: 3rem;
}

.cta-section p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: inline-block;
    margin-bottom: 1rem;
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    max-width: 400px;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--gradient-primary);
    transform: translateY(-3px);
}

.footer-col-2 h4, .footer-col-3 h4 {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-col-2 ul, .footer-col-3 ul {
    list-style: none;
}

.footer-col-2 li, .footer-col-3 li {
    margin-bottom: 0.8rem;
}

.footer-col-2 a, .footer-col-3 a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-col-2 a i, .footer-col-3 a i {
    font-size: 0.7rem;
    color: var(--accent-primary);
}

.footer-col-2 a:hover, .footer-col-3 a:hover {
    color: var(--text-primary);
    transform: translateX(5px);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.footer-bottom-links {
    display: flex;
    gap: 1.5rem;
}

.footer-bottom-links a:hover {
    color: var(--text-primary);
}

/* Floating AI Button */
.floating-ai-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    box-shadow: 0 10px 25px rgba(110, 86, 255, 0.5);
    z-index: 999;
    transition: var(--transition);
    animation: bounce-subtle 3s infinite;
}

.floating-ai-btn:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 15px 30px rgba(110, 86, 255, 0.7);
    color: white;
}

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

/* Responsive */
@media (max-width: 992px) {
    h1 { font-size: 3rem; }
    h2 { font-size: 2rem; }
    
    .hero-container, .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero {
        padding-top: 8rem;
    }
    
    .stats-container {
        justify-content: center;
    }
    
    .hero-content {
        text-align: center;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* simple mobile hide for now, would need JS toggle */
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .stats-container {
        flex-wrap: wrap;
        gap: 2rem;
    }
    
    .roles-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}