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

:root {
    --primary-blue: #2563eb;
    --dark-blue: #1e40af;
    --light-blue: #dbeafe;
    --gray-800: #1f2937;
    --gray-600: #4b5563;
    --gray-400: #9ca3af;
    --gray-100: #f3f4f6;
    --white: #ffffff;
    --accent-green: #10b981;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-blue);
}

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

.nav-link {
    text-decoration: none;
    color: var(--gray-600);
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 6px;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 2px;
    background: var(--gray-600);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    max-width: 1200px;
    margin: 100px auto 50px;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    min-height: 80vh;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--white);
    line-height: 1.1;
}

.hero-content h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
    color: var(--white);
    opacity: 0.9;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    color: var(--white);
    opacity: 0.8;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 32px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn.primary {
    background: var(--white);
    color: var(--primary-blue);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn.secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn.secondary:hover {
    background: var(--white);
    color: var(--primary-blue);
    transform: translateY(-2px);
}

.download-btn {
    text-decoration: none;
    display: inline-flex;
    justify-content: center;
}

/* Profile Card */
.profile-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.card-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--gray-800);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--light-blue);
}

.card-content p {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--gray-600);
    font-size: 1rem;
}

.card-content i {
    color: var(--primary-blue);
    width: 20px;
    text-align: center;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-100);
}

.social-links a {
    color: var(--gray-600);
    font-size: 1.25rem;
    transition: all 0.3s ease;
    padding: 0.5rem;
    border-radius: 8px;
    background: var(--gray-100);
}

.social-links a:hover {
    color: var(--primary-blue);
    background: var(--light-blue);
    transform: translateY(-2px);
}

/* Sections Common Styles */
section {
    padding: 80px 20px;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--white);
}

/* Skills Section */
.skills {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    margin: 50px 0;
}

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

.skill-category {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.skill-category h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--gray-800);
    text-align: center;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--light-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.skill-tag {
    background: var(--light-blue);
    color: var(--primary-blue);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

/* About Section */
.about {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.about-content > p {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    color: var(--white);
    line-height: 1.8;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.education-item, .internship-item {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    text-align: left;
}

.education-item h3, .internship-item h3 {
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.education-details, .internship-details {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--gray-100);
}

.education-details:last-child, .internship-details:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.education-details h4, .internship-details h4 {
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.highlight {
    color: var(--primary-blue);
    font-weight: 600;
}

.date {
    color: var(--primary-blue);
    font-size: 0.9rem;
    font-weight: 600;
    display: block;
    margin-bottom: 0.5rem;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--white);
    margin: 5% auto;
    padding: 3rem;
    border-radius: 16px;
    width: 90%;
    max-width: 700px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlideIn 0.4s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 2rem;
    cursor: pointer;
    color: var(--gray-400);
    transition: color 0.3s;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close:hover {
    color: var(--gray-600);
    background: var(--gray-100);
}

.modal-section {
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--gray-100);
}

.modal-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.modal-section h3 {
    color: var(--gray-800);
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-section p {
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.project-features ul {
    list-style: none;
    padding-left: 0;
}

.project-features li {
    padding: 0.5rem 0;
    color: var(--gray-600);
    position: relative;
    padding-left: 1.5rem;
}

.project-features li::before {
    content: '✓';
    color: var(--accent-green);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.cert-tag {
    background: var(--light-blue);
    color: var(--primary-blue);
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.workshop-item {
    background: var(--gray-100);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.workshop-item h4 {
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

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

.contact-info p {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.1rem;
    color: var(--gray-600);
}

.contact-info i {
    color: var(--primary-blue);
    width: 20px;
}

.social-links-large {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.social-btn {
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    font-weight: 500;
}

.social-btn.linkedin {
    background: #0077b5;
}

.social-btn.github {
    background: #333;
}

.social-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    backdrop-filter: blur(10px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        margin-top: 120px;
        gap: 2rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .education-grid {
        grid-template-columns: 1fr;
    }

    .modal-content {
        padding: 2rem;
        margin: 10% auto;
    }

    .social-links-large {
        flex-direction: column;
    }

    .social-btn {
        justify-content: center;
    }

    .cert-grid {
        grid-template-columns: 1fr;
    }
}