:root {
    --iatros-radius: 0.75rem;
    --iatros-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.06);
    --iatros-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

* {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: #f8f7fb;
    color: #2d2a40;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.015em;
}

.display-1, .display-2, .display-3, .display-4 {
    font-weight: 700;
    letter-spacing: -0.035em;
}

/* Navbar */
.navbar {
    background-color: #fff !important;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
    padding-top: 0.85rem;
    padding-bottom: 0.85rem;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.navbar-brand .text-primary {
    font-weight: 800;
}

/* Cards */
.card {
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--iatros-radius);
    box-shadow: var(--iatros-shadow-sm);
    transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.card:hover {
    box-shadow: var(--iatros-shadow);
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-weight: 600;
    margin-bottom: 0.75rem;
}

/* Buttons */
.btn {
    font-weight: 500;
    border-radius: 0.5rem;
    padding: 0.55rem 1.15rem;
    transition: transform 0.1s ease;
}

.btn:active:not(:disabled) {
    transform: translateY(1px);
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

/* Forms */
.form-control, .form-select {
    border-radius: 0.5rem;
    border-color: rgba(0, 0, 0, 0.08);
    padding: 0.6rem 0.85rem;
}

.form-control:focus, .form-select:focus {
    box-shadow: 0 0 0 0.2rem rgba(89, 60, 180, 0.1);
}

/* Badges (subtle instead of loud) */
.badge {
    font-weight: 500;
    padding: 0.35em 0.7em;
    border-radius: 0.375rem;
}

/* Utility: subtle section divider */
.subtle-divider {
    border: 0;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

/* Alert polish */
.alert {
    border-radius: var(--iatros-radius);
    border: none;
}