:root {
    --primary-color: #3B82F6;
    --secondary-color: #10B981;
    --background-color: #F9FAFB;
    --surface-color: #FFFFFF;
    --text-color: #111827;
    --heading-font: 'Inter', sans-serif;
    --body-font: 'Inter', sans-serif;
}

body {
    font-family: var(--body-font);
    background-color: var(--background-color);
    color: var(--text-color);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--heading-font);
    font-weight: 700;
}

.navbar {
    transition: all 0.3s ease-in-out;
}

.navbar-scrolled {
    background-color: var(--surface-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.hero {
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://picsum.photos/1600/900');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 8rem 0;
}

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

.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.section-title {
    margin-bottom: 3rem;
}

.card {
    border: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: transform 0.2s ease-in-out;
}

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

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.25);
}

footer {
    background-color: var(--text-color);
    color: var(--background-color);
}