@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

:root {
    --primary-color: #ff9800; /* Naranja hamburguesa */
    --secondary-color: #4CAF50; /* Verde lechuga */
    --danger-color: #f44336; /* Rojo para eliminar */
    --background-color: #f5f5f5;
    --surface-color: #ffffff;
    --text-color: #333333;
    --border-color: #e0e0e0;
    --shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* NUEVO: Estilos para el overlay de carga */
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: opacity 0.5s ease;
}

.spinner {
    border: 8px solid var(--border-color);
    border-top: 8px solid var(--primary-color);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
}

#loading-overlay p {
    margin-top: 1rem;
    font-size: 1.2rem;
    color: var(--text-color);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}


header {
    background-color: var(--surface-color);
    padding: 1rem 2rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

header h1 {
    color: var(--primary-color);
    margin: 0;
}

.main-container {
    display: flex;
    flex: 1;
    padding: 1rem;
    gap: 1rem;
}

#canvas-container {
    flex: 3;
    min-width: 0; /* Previene que el contenedor se encoja incorrectamente */
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background-color: #e3f2fd; /* Un cielo azul claro */
}

#canvas-container canvas {
    display: block; /* Elimina espacio extra debajo del canvas */
    width: 100%;
    height: 100%;
}

#ui-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--surface-color);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    overflow-y: auto;
}

#ui-container h2, #ui-container h3 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    margin-top: 0;
}

#ingredient-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.ingredient-btn {
    background-color: var(--surface-color);
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
    padding: 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    text-align: center;
    transition: all 0.2s ease-in-out;
}

.ingredient-btn:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.summary {
    margin-top: auto; /* Empuja el resumen hacia abajo */
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

#ingredient-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem 0;
    max-height: 150px;
    overflow-y: auto;
}

#ingredient-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 0.25rem;
    background-color: #fafafa;
    cursor: grab; /* Indicador de que se puede arrastrar */
}

#ingredient-list li:active {
    cursor: grabbing;
}

.ingredient-name {
    flex-grow: 1;
}

.delete-btn {
    background-color: transparent;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: bold;
    margin-left: 0.5rem;
    padding: 0 0.5rem;
    transition: transform 0.2s;
}

.delete-btn:hover {
    transform: scale(1.2);
}

/* Estilos para Drag & Drop */
#ingredient-list li.dragging {
    opacity: 0.5;
}

#ingredient-list li.drag-over {
    border-top: 2px solid var(--primary-color);
}


.total-price {
    font-size: 1.25rem;
    font-weight: 700;
    text-align: right;
    margin-bottom: 1rem;
}

#total-price {
    color: var(--primary-color);
}

#add-to-cart-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    width: 100%;
    padding: 1rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s;
}

#add-to-cart-btn:hover {
    background-color: #e68900;
}

/* Responsive */
@media (max-width: 900px) {
    .main-container {
        flex-direction: column;
    }

    #canvas-container {
        height: 50vh;
    }

    #ui-container {
        max-height: 50vh;
    }
}