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

:root {
    --primary-color: #0066cc;
    --secondary-color: #004399;
    --accent-color: #ff6b6b;
    --text-dark: #2c3e50;
    --text-light: #ecf0f1;
    --bg-light: #f8f9fa;
    --bg-dark: #1a1a1a;
    --border-radius: 8px;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

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

/* Navigation */
.navbar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: var(--text-light);
    font-size: 1.8rem;
    font-weight: bold;
}

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

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color);
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
    padding: 6rem 2rem;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: slideDown 0.8s ease;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    animation: slideUp 0.8s ease;
}

.hero-contact {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.hero-contact a {
    color: var(--text-light);
    text-decoration: none;
    padding: 0.7rem 1.5rem;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    transition: background-color 0.3s ease, transform 0.2s ease;
    font-weight: 500;
}

.hero-contact a:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Projects Section */
.projects {
    padding: 4rem 0;
    background-color: white;
}

.projects h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

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

.project-card {
    background: white;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.project-header {
    margin-bottom: 1rem;
}

.project-header h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
}

.tech-tag {
    display: inline-block;
    background-color: var(--bg-light);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 1rem;
    font-size: 0.85rem;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    border: 1px solid var(--primary-color);
}

.project-card p {
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    flex-grow: 1;
    line-height: 1.7;
}

.project-details {
    background-color: var(--bg-light);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

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

.btn-link {
    flex: 1;
    min-width: 150px;
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    text-align: center;
    transition: background-color 0.3s ease, transform 0.2s ease;
    font-weight: 500;
}

.btn-link:hover {
    background-color: var(--secondary-color);
    transform: scale(1.05);
}

/* About Section */
.about {
    padding: 4rem 0;
    background-color: var(--bg-light);
}

.about h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.about > .container > p {
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 900px;
    margin-bottom: 2rem;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}


.footer-content p {
    margin: 0.5rem 0;
}

.footer-content a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.footer-content a:hover {
    color: var(--text-light);
}
.about-section {
    background: white;
    padding: 1.8rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.about-section h3 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 0.5rem;
}

.about-section ul {
    list-style: none;
    padding: 0;
}

.about-section ul li {
    padding: 0.5rem 0;
    color: var(--text-dark);
}

.about-section ul li strong {
    color: var(--primary-color);
}

.about-section ul ul {
    margin-left: 1.5rem;
    margin-top: 0.5rem;
    font-size: 0.95rem;
}

.about-section ul ul li {
    padding: 0.3rem 0;
    color: #777;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-tag {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Footer */
.footer {
    background-color: var(--text-dark);
    color: var(--text-light);
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

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

    .hero-contact a {
        display: block;
    }

    .projects h2,
    .about h2 {
        font-size: 2rem;
    }

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

    .project-links {
        flex-direction: column;
    }

    .btn-link {
        min-width: auto;
    }

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