:root {
    --lupa-azul: #009EE0;
    --lupa-naranja: #E87722;
    --lupa-gris: #f8f9fa;
    --texto: #333;
    --blanco: #ffffff;
}

* { box-sizing: border-box; font-family: 'Segoe UI', Roboto, sans-serif; margin: 0; padding: 0; }

body { background-color: #e9ecef; color: var(--texto); padding: 40px 20px; }

.contenedor {
    max-width: 900px;
    margin: 0 auto;
    background: var(--blanco);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Header y Logo */
.header-lupa {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 4px solid var(--lupa-azul);
    padding-bottom: 20px;
}

.logo-container { font-size: 48px; font-weight: bold; }
.logo-l { color: var(--lupa-azul); }
.logo-u { color: var(--lupa-naranja); }

/* Menú Principal */
.grid-modulos {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
}

.card {
    border: 2px solid #eee;
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    text-decoration: none;
    transition: 0.3s;
}

.card:hover {
    border-color: var(--lupa-azul);
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,158,224,0.2);
}

.card h2 { color: var(--lupa-azul); margin-bottom: 10px; }
.card i { font-size: 50px; margin-bottom: 15px; display: block; }

/* Tablas y Formularios */
table { width: 100%; border-collapse: collapse; margin-top: 20px; }
th { background: var(--lupa-azul); color: white; padding: 12px; text-align: left; }
td { padding: 10px; border-bottom: 1px solid #eee; }

input[type="number"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
}

.res-fila { font-weight: bold; color: var(--lupa-azul); text-align: right; }

.panel-totales {
    margin-top: 30px;
    background: var(--lupa-gris);
    padding: 20px;
    border-radius: 10px;
    border-left: 6px solid var(--lupa-naranja);
}

.btn-print {
    background: var(--lupa-naranja);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    width: 100%;
    margin-top: 20px;
}

nav { margin-bottom: 20px; }
nav a { text-decoration: none; color: var(--lupa-azul); font-weight: bold; margin-right: 15px; }

@media print {
    .no-print, nav { display: none; }
    body { background: white; padding: 0; }
    .contenedor { box-shadow: none; width: 100%; max-width: 100%; }
}