/* Estilos generales */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: linear-gradient(135deg, #e0f7fa 0%, #b2ebf2 100%);
    margin: 0;
    padding: 20px;
    min-height: 100vh;
}

.calculator {
    border: 2px solid #ccc;
    padding: 25px;
    border-radius: 15px;
    background-color: #fff;
    width: 100%;
    max-width: 420px;
    margin-bottom: 25px;
    text-align: center;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.calculator:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

h2, h3 {
    margin-bottom: 15px;
    color: #00796b;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

h2 {
    font-size: 1.8rem;
}

h3 {
    font-size: 1.4rem;
}

input[type="number"], input[type="text"], select {
    margin: 12px 0;
    padding: 12px;
    width: 90%;
    box-sizing: border-box;
    border-radius: 8px;
    border: 1px solid #b2dfdb;
    transition: all 0.3s ease;
    font-size: 1rem;
}

input[type="number"]:focus, 
input[type="text"]:focus, 
select:focus {
    outline: none;
    border-color: #26c6da;
    box-shadow: 0 0 0 3px rgba(38, 198, 218, 0.2);
}

button {
    margin: 12px 0;
    padding: 12px;
    width: 90%;
    box-sizing: border-box;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

button:active {
    transform: translateY(0);
}

.main-button {
    background: linear-gradient(to right, #29b6f6, #26c6da);
    color: white;
}

.main-button:hover {
    background: linear-gradient(to right, #0288d1, #00acc1);
}

p {
    margin: 12px 0;
    color: #333;
    line-height: 1.5;
}

/* Lista de productos */
#listaProductos {
    width: 100%;
    max-width: 840px;
    background-color: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

#listaProductos table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 25px;
    overflow: hidden;
    border-radius: 10px;
}

#listaProductos th, #listaProductos td {
    padding: 12px;
    border: 1px solid #e0e0e0;
    text-align: left;
}

#listaProductos th {
    background: linear-gradient(to right, #26c6da, #00acc1);
    color: white;
    font-weight: 600;
}

#listaProductos tr:nth-child(even) {
    background-color: #f5f5f5;
}

#listaProductos tr:hover {
    background-color: #e0f7fa;
}

/* Botones especiales */
#listaProductos button {
    padding: 8px 12px;
    width: auto;
    margin: 0 5px;
    font-size: 0.9rem;
}

#listaProductos button.editar {
    background: linear-gradient(to right, #4CAF50, #66BB6A);
}

#listaProductos button.editar:hover {
    background: linear-gradient(to right, #43A047, #5CB85C);
}

#listaProductos button.eliminar {
    background: linear-gradient(to right, #f44336, #ef5350);
}

#listaProductos button.eliminar:hover {
    background: linear-gradient(to right, #d32f2f, #e53935);
}

#listaProductos button.imprimir {
    background: linear-gradient(to right, #FF9800, #FFA726);
}

#listaProductos button.imprimir:hover {
    background: linear-gradient(to right, #F57C00, #FB8C00);
}

#listaProductos button.limpiar-lista {
    background: linear-gradient(to right, #f44336, #ef5350);
    margin-top: 15px;
}

#listaProductos button.limpiar-lista:hover {
    background: linear-gradient(to right, #d32f2f, #e53935);
}

#listaProductos button.generar-pdf {
    background: linear-gradient(to right, #008CBA, #00bcd4);
    margin-top: 15px;
}

#listaProductos button.generar-pdf:hover {
    background: linear-gradient(to right, #007bb5, #00acc1);
}

#listaProductos button.lista-costos {
    background: linear-gradient(to right, #9c27b0, #ab47bc);
    margin-top: 15px;
}

#listaProductos button.lista-costos:hover {
    background: linear-gradient(to right, #7b1fa2, #8e24aa);
}

#listaProductos button.generar-respaldo {
    background: linear-gradient(to right, #607d8b, #78909c);
    margin-top: 15px;
}

#listaProductos button.generar-respaldo:hover {
    background: linear-gradient(to right, #455a64, #546e7a);
}

#listaProductos button.btn-cerrar-sesion:hover {
    background: linear-gradient(to right, #455a64, #546e7a);
}

/* Lista de costos */
#listaCostosContainer {
    width: 100%;
    background-color: #f9f9f9;
    padding: 25px;
    border-radius: 15px;
    margin-top: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

#listaCostos {
    list-style-type: none;
    padding: 0;
}

#listaCostos li {
    padding: 12px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    transition: background-color 0.3s;
}

#listaCostos li:hover {
    background-color: #e0f7fa;
}

#listaCostos li span:first-child {
    flex: 2;
    font-weight: 500;
}

#listaCostos li span:last-child {
    flex: 1;
    text-align: right;
    font-family: 'Courier New', monospace;
    font-weight: bold;
    color: #00796b;
}

.generar-pdf-costos {
    background: linear-gradient(to right, #2ecc71, #4CAF50);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    margin-bottom: 20px;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    width: auto;
}

.generar-pdf-costos:hover {
    background: linear-gradient(to right, #27ae60, #43A047);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

/* Toast de notificaciones */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    padding: 16px 32px;
    border-radius: 8px;
    z-index: 1000;
    animation: fadeIn 0.3s;
    color: white;
    font-weight: bold;
    background: linear-gradient(to right, #4CAF50, #66BB6A);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast.error {
    background: linear-gradient(to right, #f44336, #ef5350);
}

.toast.warning {
    background: linear-gradient(to right, #FF9800, #FFA726);
}

@keyframes fadeIn {
    from { 
        opacity: 0;
        bottom: 0;
    }
    to { 
        opacity: 1;
        bottom: 30px;
    }
}

/* Estilos para el inventario */
.inventario-bajo {
    color: #f44336;
    font-weight: bold;
    background-color: #ffebee;
    padding: 2px 5px;
    border-radius: 4px;
}

.ajuste-inventario {
    display: flex;
    align-items: center;
    gap: 5px;
}

.ajuste-inventario button {
    padding: 5px 10px;
    min-width: 30px;
    margin: 0;
    font-size: 0.8rem;
}

.ajuste-inventario input {
    width: 50px;
    padding: 5px;
    text-align: center;
    margin: 0;
}

/* Responsivo */
@media (max-width: 768px) {
    body {
        padding: 15px;
    }
    
    .calculator {
        max-width: 100%;
        padding: 20px;
    }
    
    input[type="number"], input[type="text"], select, button {
        width: 100%;
    }
    
    #listaProductos {
        padding: 15px;
    }
    
    #listaProductos table {
        font-size: 14px;
    }
    
    #listaProductos th, #listaProductos td {
        padding: 8px;
    }
    
    #listaProductos button {
        padding: 6px 10px;
        font-size: 12px;
        margin: 2px;
    }
    
    #listaCostosContainer {
        padding: 15px;
    }

    .ajuste-inventario {
        flex-direction: column;
        gap: 3px;
    }

    .ajuste-inventario input {
        width: 40px;
    }
}

/* Efectos adicionales */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.pulse-effect {
    animation: pulse 1.5s infinite;
}

/* Scroll personalizado */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #b2dfdb;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #80cbc4;
}