:root {
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --secondary: #8b5cf6;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

h1, h2, h3, h4, .logo {
    font-family: 'Outfit', sans-serif;
}

/* Background Blobs for Modern UI */
.blob {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.6;
    animation: float 10s infinite ease-in-out alternate;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
}

.blob-2 {
    bottom: -10%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--secondary) 0%, transparent 70%);
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 50px) scale(1.1); }
}

/* Glassmorphism Classes */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1rem 5%;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-main);
    text-decoration: none;
    background: linear-gradient(to right, #60a5fa, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

.nav-links a:hover {
    color: var(--text-main);
}

/* Layout */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
}

.section {
    padding: 6rem 0;
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 3rem;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    margin-top: 10px;
    border-radius: 2px;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.greeting {
    font-size: 1.2rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.name {
    font-size: clamp(3rem, 5vw, 5.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.en-name {
    font-size: clamp(2rem, 3vw, 3rem);
    color: var(--text-muted);
    font-weight: 600;
}

.role {
    font-size: clamp(1.5rem, 2.5vw, 2.5rem);
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.bio {
    font-size: 1.1rem;
    max-width: 600px;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1rem;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(5px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

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

.skill-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.skill-card ul {
    list-style: none;
}

.skill-card li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
}

.skill-card i.fa-check {
    color: var(--primary);
    font-size: 0.9rem;
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

/* Timeline/Experience Section */
.timeline {
    position: relative;
    max-width: 800px;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 2px;
    background: var(--glass-border);
}

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

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

.timeline-dot {
    position: absolute;
    left: 11px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 10px var(--primary);
    border: 4px solid var(--bg-dark);
}

.timeline-date {
    display: inline-block;
    padding: 0.3rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.timeline-content h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

/* Education */
.edu-header {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.edu-icon {
    font-size: 3rem;
    color: var(--secondary);
    background: rgba(139, 92, 246, 0.1);
    padding: 1.5rem;
    border-radius: 20px;
}

.edu-major {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.edu-status {
    display: inline-block;
    padding: 0.3rem 1rem;
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.contact-card {
    text-align: center;
    text-decoration: none;
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.contact-card i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
    transition: transform 0.3s ease;
}

.contact-card:hover i {
    transform: scale(1.1);
}

.contact-card p {
    color: var(--text-muted);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
    margin-top: 4rem;
}

/* Animations classes for JS */
.fade-in {
    opacity: 0;
    animation: fadeIn 1s ease forwards;
}

.slide-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.slide-up.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeIn {
    to { opacity: 1; }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-dot {
        left: 1px;
        width: 16px;
        height: 16px;
    }
    
    .timeline-item {
        padding-left: 40px;
    }
    
    .edu-header {
        flex-direction: column;
        text-align: center;
    }
    
    .glass-card {
        padding: 1.5rem;
    }
}