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

body {
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    max-width: 1200px;
    width: 100%;
    background: white;
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    text-align: center;
}

.logo {
    margin-bottom: 40px;
}

.logo h1 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 10px;
    font-weight: 700;
}

.logo p {
    color: #7f8c8d;
    font-size: 1.1rem;
}

.logo-icon {
    font-size: 4rem;
    color: #3498db;
    margin-bottom: 20px;
}

.menu-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

@media (min-width: 768px) {
    .menu-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .menu-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.menu-card {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 25px 20px;
    text-decoration: none;
    color: #2c3e50;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    height: 100%;
    min-height: 180px;
    justify-content: center;
}

.menu-card:hover {
    transform: translateY(-5px);
    border-color: #3498db;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
    background: white;
}

.menu-card i {
    font-size: 2.5rem;
    color: #3498db;
}

.menu-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
}

.menu-card p {
    font-size: 0.9rem;
    color: #7f8c8d;
    margin: 0;
}

.card-venta {
    border-color: #27ae60;
}

.card-venta i {
    color: #27ae60;
}

.card-venta:hover {
    border-color: #27ae60;
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.3);
}

.card-facturas {
    border-color: #f39c12;
}

.card-facturas i {
    color: #f39c12;
}

.card-facturas:hover {
    border-color: #f39c12;
    box-shadow: 0 5px 15px rgba(243, 156, 18, 0.3);
}

.card-historial {
    border-color: #9b59b6;
}

.card-historial i {
    color: #9b59b6;
}

.card-historial:hover {
    border-color: #9b59b6;
    box-shadow: 0 5px 15px rgba(155, 89, 182, 0.3);
}

.card-inventario {
    border-color: #e74c3c;
}

.card-inventario i {
    color: #e74c3c;
}

.card-inventario:hover {
    border-color: #e74c3c;
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.3);
}

.card-servicios {
    border-color: #1abc9c;
}

.card-servicios i {
    color: #1abc9c;
}

.card-servicios:hover {
    border-color: #1abc9c;
    box-shadow: 0 5px 15px rgba(26, 188, 156, 0.3);
}

.card-entregas {
    border-color: #e67e22;
}

.card-entregas i {
    color: #e67e22;
}

.card-entregas:hover {
    border-color: #e67e22;
    box-shadow: 0 5px 15px rgba(230, 126, 34, 0.3);
}

.card-memos-cuentas {
    border-color: #8e44ad;
}

.card-memos-cuentas i {
    color: #8e44ad;
}

.card-memos-cuentas:hover {
    border-color: #8e44ad;
    box-shadow: 0 5px 15px rgba(142, 68, 173, 0.3);
}

.card-configuracion {
    border-color: #95a5a6;
}

.card-configuracion i {
    color: #95a5a6;
}

.card-configuracion:hover {
    border-color: #95a5a6;
    box-shadow: 0 5px 15px rgba(149, 165, 166, 0.3);
}

.footer {
    margin-top: 30px;
    color: white;
    text-align: center;
    font-size: 0.9rem;
    max-width: 1200px;
    width: 100%;
}

.footer p {
    margin: 5px 0;
}

/* --- OPTIMIZACIÓN MÓVIL (Full Width) --- */
@media (max-width: 768px) {
    body {
        padding: 0;
        background: #f4f6f7;
        display: block;
        /* Remove flex centering */
        height: auto;
        min-height: 100vh;
    }

    .container {
        padding: 15px 10px;
        margin: 0;
        border-radius: 0;
        box-shadow: none;
        min-height: 100vh;
        max-width: 100%;
        display: flex;
        flex-direction: column;
    }

    .logo {
        margin-bottom: 25px;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .logo-icon {
        font-size: 3rem;
        margin-bottom: 10px;
    }

    .logo h1 {
        font-size: 1.8rem;
        margin-bottom: 5px;
    }

    .menu-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .menu-card {
        min-height: auto;
        padding: 15px;
        flex-direction: row;
        /* Icono a la izquierda */
        justify-content: flex-start;
        text-align: left;
        align-items: center;
        gap: 15px;
        background: white;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
        border: 1px solid #e0e0e0;
    }

    .menu-card:hover {
        transform: none;
    }

    .menu-card i {
        font-size: 1.8rem;
        width: 40px;
        text-align: center;
    }

    .menu-card h3 {
        font-size: 1.1rem;
        margin-bottom: 2px;
    }

    .menu-card p {
        font-size: 0.85rem;
    }

    .footer {
        margin-top: auto;
        padding: 20px 0;
        color: #7f8c8d;
    }
}