:root {
    --bs-primary-rgb: 13, 110, 253;
    --bs-secondary-rgb: 108, 117, 125;
    --bs-success-rgb: 25, 135, 84;
    --background-color: #F8F9FA;
    --surface-color: #FFFFFF;
    --font-family-sans-serif: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

.navbar-sticky {
    transition: background-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.navbar-sticky.scrolled {
    background-color: rgba(255, 255, 255, 0.95) !important;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.hero {
    background: linear-gradient(to right, rgba(13, 110, 253, 0.8), rgba(10, 88, 202, 0.8)), url('https://picsum.photos/1600/900') no-repeat center center;
    background-size: cover;
    color: white;
}

.section-icon {
    font-size: 2.5rem;
    color: var(--bs-primary);
}

.testimonial-card img {
    width: 96px;
    height: 96px;
    object-fit: cover;
}

.form-control:focus {
    box-shadow: 0 0 0 0.25rem rgba(var(--bs-primary-rgb), 0.25);
    border-color: rgba(var(--bs-primary-rgb), 0.5);
}