/* =================================
   DISEÑO PROFESIONAL (v3 con alertas en pantalla)
   ================================= */
:root {
    --bg-color: #f4f5f7;
    --surface-color: #ffffff;
    --primary-color: #e53935; /* Rojo pizzería */
    --primary-color-dark: #c62828;
    --text-primary: #1a202c;
    --text-secondary: #718096;
    --border-color: #e2e8f0;
    --success-color: #38a169;
    --danger-color: #e53e3e;
    --warning-color: #dd6b20;
    --font-family: 'Poppins', sans-serif;
}

/* --- Reseteo y Base --- */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    margin: 0;
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-size: 14px;
    overflow: hidden;
}

h1, h2, h3 {
    font-weight: 600;
}

/* --- Estructura Principal --- */
.app-container {
    display: flex;
    height: 100vh;
}

.main-content-section {
    flex: 3;
    display: flex;
    flex-direction: column;
    padding: 24px;
    overflow-y: auto;
}

.cart-section {
    flex: 1;
    min-width: 360px;
    max-width: 380px;
    background-color: var(--surface-color);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px;
    box-shadow: -5px 0 15px rgba(0,0,0,0.05);
}

/* --- Header y Navegación --- */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
    flex-shrink: 0;
}
.app-header h1 {
    font-size: 1.5rem;
    margin: 0;
    white-space: nowrap;
}
.main-actions {
    display: flex;
    flex-shrink: 0;
    gap: 8px;
}
.main-actions button {
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    background-color: var(--surface-color);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.main-actions button:hover {
    background-color: #f7fafc;
    border-color: #cbd5e0;
}
.main-actions button.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* --- Pestañas de Categorías --- */
#pos-view {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}
.category-tabs button {
    padding: 8px 16px;
    border: none;
    background-color: #edf2f7;
    color: var(--text-secondary);
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}
.category-tabs button:hover {
    background-color: #e2e8f0;
}
.category-tabs button.active {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
}

/* --- Grilla de Productos --- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
    overflow-y: auto;
    flex-grow: 1;
    padding-right: 12px;
}
.product-card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background-color: var(--surface-color);
    text-align: center;
    padding: 16px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
}
.product-card h3 {
    font-size: 1rem;
    margin: 10px 0;
    flex-grow: 1;
    font-weight: 500;
}
.product-card p {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 10px 0;
}
.product-card button {
    width: 100%;
    padding: 12px;
    border: none;
    background-color: var(--success-color);
    color: white;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.2s ease;
}
.product-card button:hover {
    background-color: #2f855a;
}

/* --- Carrito de Compras --- */
.cart-section h2 {
    margin-top: 0;
    font-size: 1.25rem;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}
.cart-items {
    flex-grow: 1;
    overflow-y: auto;
    padding-right: 12px;
}
.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}
.cart-item:last-child {
    border-bottom: none;
}
.cart-item-info {
    flex-grow: 1;
    padding-right: 10px;
}
.cart-item-info b {
    font-weight: 600;
}
.cart-item-controls {
    display: flex;
    align-items: center;
}
.cart-item-controls button {
    width: 28px;
    height: 28px;
    border: 1px solid var(--border-color);
    background-color: var(--surface-color);
    cursor: pointer;
    border-radius: 50%;
    font-weight: bold;
    transition: all 0.2s ease;
}
.cart-item-controls button:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
}
.cart-item-controls span {
    margin: 0 12px;
    font-weight: 600;
}
.cart-summary {
    padding-top: 16px;
    border-top: 2px solid var(--border-color);
}
.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    color: var(--text-secondary);
}
.summary-row span:last-child {
    font-weight: 600;
    color: var(--text-primary);
}
.summary-row.total {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--text-primary);
}
.summary-row.total span {
    font-weight: 700;
    color: var(--text-primary);
}
.cart-actions {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 12px;
    margin-top: 24px;
}
.cart-actions button {
    padding: 16px;
    border: 1px solid;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
}
#clear-cart-btn {
    background-color: var(--surface-color);
    border-color: #cbd5e0;
    color: var(--text-secondary);
}
#clear-cart-btn:hover {
    background-color: var(--danger-color);
    color: white;
    border-color: var(--danger-color);
}
.checkout-btn {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}
.checkout-btn:hover {
    background-color: var(--primary-color-dark);
    border-color: var(--primary-color-dark);
}

/* --- Vistas de Reportes y Gastos --- */
.view h2 {
    font-size: 1.5rem;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}
.filter-bar, .form-container {
    background-color: var(--surface-color);
    padding: 16px;
    border-radius: 12px;
    display: flex;
    gap: 16px;
    align-items: center;
    margin-bottom: 24px;
}
#add-expense-form {
    display: flex;
    width: 100%;
    gap: 16px;
    align-items: center;
}
#add-expense-form input[type="text"] {
    flex-grow: 2;
}
#add-expense-form input[type="number"] {
    flex-grow: 1;
}
#add-expense-form button {
    flex-shrink: 0;
}
.results-container table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--surface-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
.results-container th, .results-container td {
    border-bottom: 1px solid var(--border-color);
    padding: 14px;
    text-align: left;
}
.results-container th {
    background-color: #f7fafc;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-secondary);
}
.total-summary {
    font-size: 1.2rem;
    font-weight: 700;
    text-align: right;
    margin-top: 20px;
    padding: 16px;
    background-color: var(--surface-color);
    border-radius: 12px;
}

/* --- Formularios y Modal --- */
input, select, textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: #f7fafc;
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color 0.2s ease;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: white;
}
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.modal-overlay.visible {
    opacity: 1;
    visibility: visible;
}
.modal-content {
    background-color: white;
    padding: 32px;
    border-radius: 16px;
    width: 90%;
    max-width: 550px;
    box-shadow: 0 20px 25px rgba(0,0,0,0.1);
    transform: scale(0.95);
    transition: transform 0.3s ease;
}
.modal-overlay.visible .modal-content {
    transform: scale(1);
}
.form-row {
    display: flex;
    gap: 20px;
}
.form-group {
    flex: 1;
    margin-bottom: 16px;
}
.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-secondary);
}
.modal-summary {
    margin: 24px 0;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}
.modal-summary .total {
    font-size: 1.3rem;
    font-weight: bold;
}
.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}
.modal-actions button {
    padding: 12px 24px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
}
.btn-secondary {
    background-color: #e2e8f0;
    color: var(--text-primary);
}
.btn-secondary:hover {
    background-color: #cbd5e0;
}
.btn-primary {
    background-color: var(--primary-color);
    color: white;
}
.btn-primary:hover {
    background-color: var(--primary-color-dark);
}
#search-results {
    border: 1px solid #ccc;
    max-height: 150px;
    overflow-y: auto;
    position: absolute;
    background-color: white;
    width: calc(50% - 32px);
    z-index: 1001;
    border-radius: 8px;
    box-shadow: 0 10px 15px rgba(0,0,0,0.1);
}
#search-results div {
    padding: 10px;
    cursor: pointer;
}
#search-results div:hover {
    background-color: var(--bg-color);
}
.delete-btn {
    background-color: #fed7d7;
    color: #c53030;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    padding: 5px 8px;
    font-size: 1rem;
    font-weight: bold;
}
.delete-btn:hover {
    background-color: var(--danger-color);
    color: white;
}

/* --- ESTILOS NUEVOS: Notificaciones (Toast) y Modal de Confirmación --- */
#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
}
.toast {
    background-color: var(--surface-color);
    color: white;
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    opacity: 0;
    transform: translateX(100%);
    animation: slideIn 0.5s forwards, fadeOut 0.5s 3.5s forwards;
    font-weight: 500;
}
.toast.success {
    background-color: var(--success-color);
}
.toast.error {
    background-color: var(--danger-color);
}
.toast.warning {
    background-color: var(--warning-color);
}
@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}
@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}
#confirm-modal .modal-content {
    max-width: 400px;
    text-align: center;
}
#confirm-modal h2 {
    margin-top: 0;
}

/* --- Scrollbar Personalizado --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-color); }
::-webkit-scrollbar-thumb { background: #cbd5e0; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #a0aec0; }

/* --- Asegurar que la columna izquierda siempre ocupe el alto completo --- */
.main-content-section {
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

/* Footer siempre abajo */
.main-content-section footer {
    margin-top: auto;
}