:root {
    --primary-color: #3E66F8;
    --secondary-color: #FF6B6B;
    --background-color: #F8F9FA;
    --surface-color: #FFFFFF;
    --text-color: #212529;
    --light-text-color: #6c757d;
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
}

.navbar-brand {
    font-weight: bold;
}

.hero {
    background: linear-gradient(120deg, var(--primary-color), #2E52D9);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 1rem auto;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}


.section {
    padding: 5rem 0;
}

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

.card {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.portfolio-card .card-img-top {
    border-top-left-radius: 0.5rem;
    border-top-right-radius: 0.5rem;
}

.contact-form {
    background: var(--surface-color);
    padding: 3rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.08);
}

.form-control {
    border-radius: 0.5rem;
    padding: 0.75rem;
}

.form-control:focus {
    box-shadow: 0 0 0 0.25rem rgba(62, 102, 248, 0.25);
    border-color: var(--primary-color);
}

.footer {
    background: var(--surface-color);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid #e9ecef;
}