/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Tech & Futuristic Color Scheme */
    --bg-dark: #0F172A;
    --primary: #22D3EE;
    --secondary: #64748B;
    --accent: #F4F4F4;
    --text-dark: #1E293B;
    --text-light: #E2E8F0;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-light);
    background-color: var(--bg-dark);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.section-heading {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--primary);
    position: relative;
}

.section-heading::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

/* ===== NAVIGATION BAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid rgba(34, 211, 238, 0.1);
}

.navbar.scrolled {
    padding: 15px 0;
    box-shadow: 0 2px 20px rgba(34, 211, 238, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

.logo a:hover {
    color: var(--accent);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary);
    border-radius: 3px;
    transition: var(--transition);
}

/* ===== ABOUT SECTION ===== */
.about-section {
    padding-top: 120px;
}

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

.section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--accent);
}

.highlight {
    color: var(--primary);
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 40px;
    color: var(--secondary);
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

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

.btn-primary:hover {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    padding: 12px 30px;
}

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

.btn-secondary:hover {
    background: var(--primary);
    color: var(--bg-dark);
}

/* ===== PROJECTS SECTION ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.project-card {
    background: rgba(100, 116, 139, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: 12px;
    padding: 30px;
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(34, 211, 238, 0.2);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.project-title {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--accent);
    flex: 1;
}

.github-link {
    color: var(--primary);
    font-size: 1.5rem;
    transition: var(--transition);
}

.github-link:hover {
    color: var(--accent);
}

.project-problem {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--secondary);
    margin-bottom: 20px;
}

.project-problem strong {
    color: var(--primary);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.tech-tag {
    background: rgba(34, 211, 238, 0.15);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

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

.project-features li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--secondary);
    font-size: 0.95rem;
}

.project-features li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: 1.2rem;
}

/* ===== SKILLS SECTION ===== */
.skills-category {
    margin-bottom: 60px;
}

.skills-category:last-child {
    margin-bottom: 0;
}

.category-title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 30px;
    text-align: center;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.skill-card {
    background: rgba(100, 116, 139, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: 12px;
    padding: 25px;
    transition: var(--transition);
}

.skill-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
}

.skill-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.skill-header i {
    font-size: 2rem;
    color: var(--primary);
}

.skill-header h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent);
}

.proficiency {
    margin-bottom: 12px;
}

.proficiency-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.proficiency-badge.learning {
    background: rgba(251, 191, 36, 0.2);
    color: #FCD34D;
}

.proficiency-badge.familiar {
    background: rgba(59, 130, 246, 0.2);
    color: #60A5FA;
}

.proficiency-badge.comfortable {
    background: rgba(34, 197, 94, 0.2);
    color: #4ADE80;
}

.skill-description {
    color: var(--secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ===== CONTACT SECTION ===== */
.contact-intro {
    text-align: center;
    font-size: 1.125rem;
    color: var(--secondary);
    margin-bottom: 50px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(100, 116, 139, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: 12px;
    padding: 30px;
    text-decoration: none;
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(34, 211, 238, 0.2);
}

.contact-card i {
    font-size: 2.5rem;
    color: var(--primary);
}

.contact-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 5px;
}

.contact-info p {
    color: var(--secondary);
    font-size: 0.95rem;
}

/* ===== FOOTER ===== */
.footer {
    background: rgba(15, 23, 42, 0.5);
    border-top: 1px solid rgba(34, 211, 238, 0.2);
    padding: 30px 0;
    text-align: center;
}

.footer p {
    color: var(--secondary);
    font-size: 0.9rem;
    margin: 5px 0;
}

.last-updated {
    color: var(--primary);
    font-weight: 500;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
        z-index: 1001;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(15, 23, 42, 0.98);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 30px 0;
        gap: 0;
        border-top: 1px solid rgba(34, 211, 238, 0.2);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        padding: 20px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-heading {
        font-size: 2rem;
    }
    
    .about-text {
        font-size: 1rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section > * {
    animation: fadeInUp 0.6s ease-out;
}