/* Global Styles */
body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
}

/* Navbar */
.navbar {
    background: linear-gradient(to right, #0d6efd, #0b5ed7) !important;
}

/* Cards */
.card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 .5rem 1rem rgba(0,0,0,.08) !important;
}

/* Buttons */
.btn-primary {
    background-color: #0d6efd;
    border-color: #0d6efd;
    box-shadow: 0 4px 6px rgba(13, 110, 253, 0.2);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    box-shadow: 0 6px 12px rgba(13, 110, 253, 0.3);
    transform: translateY(-1px);
}

/* Tables */
.table thead th {
    background-color: #f8f9fa;
    border-bottom: 2px solid #e9ecef;
    color: #495057;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
}

/* Las etiquetas del menú no se parten a mitad de frase: con todas las
   secciones visibles, "Validar QR" caía en dos líneas. */
.navbar-nav .nav-link { white-space: nowrap; }

/* Campos de formulario
   El borde por defecto de Bootstrap (#dee2e6) casi no se ve sobre una
   tarjeta blanca. Se oscurece hasta un contraste de 3:1 con el fondo y se
   da al campo un tinte muy leve, para que se distinga de la tarjeta. */
.form-control,
.form-select,
.input-group-text {
    border-color: #8a94a1;
}

.form-control,
.form-select {
    background-color: #fbfcfe;
}

.form-control::placeholder {
    color: #7b8590;
}

.input-group-text {
    background-color: #e9edf2;
    color: #495057;
}

.form-control:hover:not(:disabled):not([readonly]),
.form-select:hover:not(:disabled) {
    border-color: #5f6b7a;
}

.form-control:focus,
.form-select:focus {
    background-color: #fff;
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

/* Un campo que no se puede editar se ve distinto de uno que sí */
.form-control:disabled,
.form-control[readonly],
.form-select:disabled {
    background-color: #e9ecef;
    border-color: #c4cad1;
    color: #5c636a;
}

.form-check-input {
    border-color: #6c7682;
}

.form-check-input:checked {
    border-color: #0d6efd;
}

/* Los campos con error o validados conservan su color de Bootstrap */
.form-control.is-invalid, .form-select.is-invalid,
.was-validated .form-control:invalid, .was-validated .form-select:invalid {
    border-color: #dc3545;
}

.form-control.is-valid, .form-select.is-valid,
.was-validated .form-control:valid, .was-validated .form-select:valid {
    border-color: #198754;
}