:root {
    --azul-primario: #0d5c8f;
    --azul-oscuro: #083a5c;
    --aqua: #17a2b8;
}

body {
    background-color: #f4f7fa;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* ---------- Navbar ---------- */
.app-navbar {
    background: linear-gradient(90deg, var(--azul-oscuro) 0%, var(--azul-primario) 100%);
}

.app-navbar .nav-link {
    color: rgba(255, 255, 255, 0.85);
    border-radius: 6px;
    padding: 0.4rem 0.9rem;
    transition: background-color 0.15s ease;
}

.app-navbar .nav-link:hover {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.12);
}

/* ---------- Login ---------- */
.login-bg {
    background: linear-gradient(135deg, var(--azul-oscuro) 0%, var(--azul-primario) 55%, var(--aqua) 100%);
}

.login-card {
    width: 100%;
    max-width: 420px;
    border-radius: 18px;
    margin: 1rem;
}

.login-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #fff;
    background: linear-gradient(135deg, var(--azul-primario), var(--aqua));
    box-shadow: 0 6px 18px rgba(13, 92, 143, 0.35);
}

/* ---------- Menú principal (cards) ---------- */
.menu-card {
    border-radius: 16px;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    cursor: pointer;
}

.menu-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(8, 58, 92, 0.18) !important;
}

.menu-card-icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #fff;
}

.icon-padron   { background: linear-gradient(135deg, #0d5c8f, #17a2b8); }
.icon-recibos  { background: linear-gradient(135deg, #198754, #4dd08a); }
.icon-facturas { background: linear-gradient(135deg, #6f42c1, #a97ff0); }

/* ---------- Tablas ---------- */
.tabla-datos thead th {
    background-color: var(--azul-oscuro);
    color: #fff;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    white-space: nowrap;
}

.tabla-datos td {
    font-size: 0.875rem;
}

/* ---------- Botones ---------- */
.btn-primary {
    background-color: var(--azul-primario);
    border-color: var(--azul-primario);
}

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

.page-link {
    color: var(--azul-primario);
}

.page-item.active .page-link {
    background-color: var(--azul-primario);
    border-color: var(--azul-primario);
}