html {
    scroll-behavior: smooth;
}

body.page-background {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #eef2f7 100%);
    color: #334155; /* slate-700 */
}

.form-input {
    margin-top: 0.25rem;
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: white;
    border: 1px solid #cbd5e1; /* slate-300 */
    border-radius: 0.375rem;
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}
.form-input:focus {
    outline: none;
    border-color: #3b82f6; /* blue-500 */
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-input.invalid {
    border-color: #f87171; /* red-400 */
}

.form-error-message {
    font-size: 0.875rem;
    margin-top: 0.25rem;
    height: 1.25rem;
}

.reveal-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

nav a.nav-link.active {
    color: #2563eb; /* blue-600 */
    font-weight: 600;
}