:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --dark-bg: #212529;
    --light-bg: #f8f9fa;
}

* {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding-top: 56px;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0;
    min-height: 500px;
    display: flex;
    align-items: center;
}

/* Section Styling */
.section-padding {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* Technology Cards */
.tech-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.tech-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.tech-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.tech-icon-small {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.interested-tech {
    border: 2px dashed #ffc107;
    background-color: #fffbf0;
}

/* Skill Cards */
.skill-card {
    transition: transform 0.3s ease;
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.skill-card:hover {
    transform: translateY(-5px);
}

/* Project Cards */
.project-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.project-card.border-primary {
    border: 2px solid var(--primary-color) !important;
}

.project-card img {
    height: 250px;
    object-fit: cover;
}

/* Navigation */
.navbar {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-link {
    font-weight: 500;
    margin-left: 1rem;
    transition: color 0.3s ease;
}

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

/* Contact Section */
.social-link-btn {
    transition: all 0.3s ease;
}

.social-link-btn:hover {
    transform: translateX(10px);
    background-color: #0d6efd;
    color: white !important;
    border-color: #0d6efd;
}

.contact-info ul li {
    padding: 5px 0;
}

/* Footer */
footer {
    margin-top: 0;
}

.social-footer a {
    transition: transform 0.3s ease;
    display: inline-block;
}

.social-footer a:hover {
    transform: translateY(-3px);
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section {
        padding: 80px 0;
        min-height: 400px;
    }

    .section-title {
        font-size: 2rem;
    }

    .section-padding {
        padding: 60px 0;
    }
}