:root {
    --primary-color: #3b82f6;
    --secondary-color: #60a5fa;
    --text-color: #e5e7eb;
    --dark-bg: #111827;
    --darker-bg: #0f172a;
    --card-bg: #1f2937;
    --white: #ffffff;
    --gradient-start: #1e3a8a;
    --gradient-end: #0f172a;
}

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

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

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(17, 24, 39, 0.9);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

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

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

section {
    padding: 5rem 2rem;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, transparent 0%, var(--darker-bg) 100%);
    opacity: 0.5;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    text-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
    animation: fadeInDown 1s ease;
}

.hero h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    animation: fadeInUp 1s ease 0.3s;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.6s;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    animation: fadeInUp 1s ease 0.9s;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.cta-button:hover::before {
    left: 100%;
}

.about {
    background-color: var(--darker-bg);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

.skills {
    background-color: var(--dark-bg);
}

.skills h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

.certifications {
    background-color: var(--darker-bg);
    padding: 5rem 2rem;
}

.certifications h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.certification-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    border: 1px solid rgba(59, 130, 246, 0.1);
    position: relative;
    overflow: hidden;
}

.certification-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.certification-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 25px rgba(59, 130, 246, 0.2);
    border-color: var(--primary-color);
}

.certification-card:hover::before {
    transform: scaleX(1);
}

.certification-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

.certification-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.certification-card p {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.cert-date {
    display: inline-block;
    padding: 0.3rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.skill-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    border: 1px solid rgba(59, 130, 246, 0.1);
}

.skill-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 25px rgba(59, 130, 246, 0.2);
    border-color: var(--primary-color);
}

.skill-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

.projects {
    background-color: var(--darker-bg);
}

.projects h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    border: 1px solid rgba(59, 130, 246, 0.1);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 25px rgba(59, 130, 246, 0.2);
    border-color: var(--primary-color);
}

.project-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.tech-stack span {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(59, 130, 246, 0.2);
    transition: all 0.3s ease;
}

.tech-stack span:hover {
    background: rgba(59, 130, 246, 0.2);
    transform: translateY(-2px);
}

.project-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

.project-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.project-link:hover::after {
    width: 100%;
}

.project-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.project-links .project-link {
    flex: 1;
    text-align: center;
    padding: 0.5rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 5px;
    transition: all 0.3s ease;
}

.project-links .project-link:hover {
    background: rgba(59, 130, 246, 0.2);
    transform: translateY(-2px);
}

.contact {
    background-color: var(--dark-bg);
}

.contact h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    background-color: var(--card-bg);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text-color);
    transition: all 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

.contact-form textarea {
    height: 150px;
    resize: vertical;
}

.submit-button {
    padding: 1rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.submit-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.social-links a {
    color: var(--primary-color);
    font-size: 1.5rem;
    transition: all 0.3s ease;
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

.social-links a:hover {
    color: var(--secondary-color);
    transform: translateY(-5px);
}

footer {
    text-align: center;
    padding: 2rem;
    background-color: var(--darker-bg);
    border-top: 1px solid rgba(59, 130, 246, 0.1);
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero h2 {
        font-size: 1.5rem;
    }
    
    section {
        padding: 3rem 1rem;
    }
}