:root {
    --primary-color: #0d6efd;
    --primary-dark: #0a58ca;
    --secondary-color: #6c757d;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

body {
    scroll-behavior: smooth;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow-x: hidden;
}

/* Navbar */
.glass-nav {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.glass-nav.scrolled {
    background: rgba(0, 0, 0, 0.9);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

/* Hero */
.hero-modern {
    min-height: 100vh;
    background:
        linear-gradient(to right, rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0.4)),
        url("https://images.unsplash.com/photo-1498050108023-c5249f4df085?w=1920&q=80");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding-top: 80px;
}

/* Titles */
.section-title {
    font-weight: 700;
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 2rem;
}

/* Skills */
.skills-section {
    background: var(--light-bg);
}

.progress {
    height: 22px;
    border-radius: 12px;
    overflow: hidden;
    margin-top: 0.5rem;
}

.progress-bar {
    transition: width 1.5s ease;
    font-weight: 500;
}

/* Projects - Professional Card */
.project-card {
    background: var(--white);
    padding: 20px;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    border-color: rgba(13, 110, 253, 0.3);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(13, 110, 253, 0.03), rgba(102, 16, 242, 0.03));
    border-radius: 18px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.project-card:hover::before {
    opacity: 1;
}

.project-card .card {
    transition: var(--transition);
    border: none;
    margin: 0;
    background: transparent;
}

.project-card .card:hover {
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.12) !important;
}

/* Badge styling */
.badge {
    padding: 0.45em 0.85em;
    font-weight: 500;
    border-radius: 0.375rem;
    font-size: 0.85rem;
    transition: var(--transition);
}

.badge.bg-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    box-shadow: 0 4px 10px rgba(13, 110, 253, 0.3);
    border: none;
}

.badge.bg-secondary {
    background: linear-gradient(135deg, #6c757d, #5a6268);
    box-shadow: 0 2px 6px rgba(108, 117, 125, 0.2);
    border: none;
}

.badge.bg-light {
    background-color: #f8f9fa;
    color: #212529;
}

/* Button styling */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border: none;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(13, 110, 253, 0.4);
    padding: 0.75rem 1.5rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(13, 110, 253, 0.5);
    background: linear-gradient(135deg, #0b5ed7, #084298);
    border-color: transparent;
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.8);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* Card title */
.project-card .card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* Card text */
.project-card .card-text {
    line-height: 1.7;
    font-size: 1.05rem;
    color: #495057;
}

/* Section spacing */
section {
    scroll-margin-top: 90px;
    padding: 80px 0;
}

/* Responsive */
@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }

    .project-card {
        padding: 15px;
    }

    .hero-modern {
        padding-top: 70px;
        min-height: auto;
        padding-bottom: 60px;
    }

    .glass-nav {
        padding: 0.5rem 1rem;
    }
}

/* Contact Section */
.contact-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
    z-index: 0;
}

.contact-section .container {
    position: relative;
    z-index: 1;
}

.contact-section .section-title {
    color: var(--white);
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
}

.contact-section p.lead {
    font-size: 1.4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
    color: rgba(255, 255, 255, 0.95);
}

/* Footer copyright */
.contact-section p.mb-0 {
    opacity: 0.8;
    font-size: 1.1rem;
    margin-top: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

/* Accessibility improvements */
.nav-link:focus,
.btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Smooth scroll for anchor links */
html {
    scroll-behavior: smooth;
}

/* Green badge for new projects */
.badge.bg-success {
    background: linear-gradient(135deg, #2ecc71, #27ae60);
    box-shadow: 0 4px 10px rgba(46, 204, 113, 0.3);
    border: none;
}