:root {
    --primary-color: #2563eb;
    --secondary-color: #7c3aed;
    --accent-color: #ec4899;
    --text-color: #1f2937;
    --background-color: #f8fafc;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --glass-bg: rgba(255, 255, 255, 0.8);
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

header {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 2rem;
    padding: 1rem 0;
}

nav ul li a {
    position: relative;
    padding: 0.75rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    border-radius: 999px;
    transition: var(--transition);
}

nav ul li a:hover {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

section {
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s forwards;
    animation-delay: 0.2s;
}

.hero {
    text-align: center;
    padding: 6rem 2rem;
    background: linear-gradient(45deg, #e0e7ff, #f3e8ff);
    border-radius: 2rem;
    margin: 2rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(156, 163, 175, 0.1));
    transform: rotate(45deg);
}

h1 {
    font-size: 4rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
    letter-spacing: -0.05em;
}

h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    position: relative;
    padding-left: 1.5rem;
}

h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.35em;
    height: 1em;
    width: 0.5rem;
    background: var(--secondary-color);
    border-radius: 4px;
}

.contact-info {
    margin: 2rem 0;
}

.contact-info a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 999px;
    color: var(--primary-color);
    transition: var(--transition);
    margin: 0 0.5rem;
    text-decoration: none;
}

.contact-info a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.contact-link {
    text-decoration: none;
    color: #2563eb;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    display: inline-block;
}

.contact-link:hover {
    color: #1e40af;
    text-decoration: underline;
}

.contact-link:active {
    transform: scale(0.95);
}

.contact-link.clicked {
    animation: clickEffect 0.3s ease;
}

@keyframes clickEffect {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(0.95);
    }
    100% {
        transform: scale(1);
    }
}

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

.skill-category {
    padding: 2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-radius: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--card-shadow);
}

.project-card {
    padding: 2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-radius: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    margin-bottom: 2rem;
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

.education-item {
    padding: 2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-radius: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    margin-bottom: 2rem;
}

#certifications ul li {
    padding: 1.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-radius: 1rem;
    margin: 1rem 0;
    list-style: none;
    transition: var(--transition);
}

#certifications ul li:hover {
    transform: translateX(10px);
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    color: white;
}

footer {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    margin-top: 4rem;
}

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

@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        gap: 1rem;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    .hero {
        margin: 1rem;
        padding: 4rem 1rem;
    }
    
    .skills-container {
        grid-template-columns: 1fr;
    }
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}