:root {
    --body-bg: #f0f2f5;
    --chat-window-bg: #ffffff;
    --header-bg: #007bff;
    --header-gradient: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    --bot-message-bg: #f1f3f4;
    --user-message-bg: #007bff;
    --user-message-gradient: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    --font-color-light: #ffffff;
    --font-color-dark: #202124;
    --font-color-medium: #5f6368;
    --accent-color: #34a853;
    --error-color: #ea4335;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.12);
    --border-radius: 16px;
    --border-radius-small: 12px;
    --transition: all 0.3s ease;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* --- ESTILOS GENERALES Y CONTENEDOR PRINCIPAL --- */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    margin: 0;
    background-color: var(--body-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    line-height: 1.5;
}

/* Contenedor principal con diseño moderno */
.chat-container {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 700px;
    height: 85vh;
    max-height: 800px;
    background: var(--chat-window-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    overflow: hidden;
    transition: var(--transition);
}

/* --- ENCABEZADO MEJORADO --- */
.chat-header {
    background: var(--header-gradient);
    color: var(--font-color-light);
    padding: 18px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    flex-shrink: 0;
    position: relative;
    z-index: 10;
}

.chat-header .avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--header-bg);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.chat-header .avatar:hover {
    transform: scale(1.05);
}

.chat-header .bot-info .name {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 2px;
}

.chat-header .bot-info .status {
    font-size: 0.8em;
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: 5px;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-color);
    display: inline-block;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* --- CUERPO DEL CHAT MEJORADO --- */
.chat-body {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    scroll-behavior: smooth;
}

/* Mejoras en la barra de desplazamiento */
.chat-body::-webkit-scrollbar {
    width: 6px;
}

.chat-body::-webkit-scrollbar-track {
    background: transparent;
}

.chat-body::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
}

.chat-body::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.3);
}

/* --- PIE DE PÁGINA MEJORADO --- */
.chat-footer {
    padding: 15px 20px;
    background: #f9f9f9;
    flex-shrink: 0;
    border-top: 1px solid #eee;
    transition: var(--transition);
}

#chatForm {
    display: flex;
    align-items: center;
    gap: 12px;
}

#message {
    flex-grow: 1;
    border: none;
    background: #ffffff;
    padding: 14px 20px;
    border-radius: 24px;
    outline: none;
    font-size: 1em;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    border: 1px solid transparent;
}

#message:focus {
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.2);
    border-color: rgba(0, 123, 255, 0.3);
}

#submitButton {
    background: var(--header-gradient);
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow-light);
}

#submitButton:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

#submitButton:active {
    transform: translateY(0);
}

#submitButton:disabled {
    background: #a0a0a0;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* --- BURBUJAS DE MENSAJE MEJORADAS --- */
.message-bubble {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    max-width: 85%;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.message-bubble .message-content {
    padding: 12px 16px;
    border-radius: var(--border-radius-small);
    line-height: 1.5;
    word-wrap: break-word;
    box-shadow: var(--shadow-light);
    position: relative;
}

.message-bubble.bot {
    align-self: flex-start;
}

.message-bubble.bot .message-content {
    background: var(--bot-message-bg);
    color: var(--font-color-dark);
    border-top-left-radius: 4px;
}

.message-bubble.user {
    align-self: flex-end;
}

.message-bubble.user .message-content {
    background: var(--user-message-gradient);
    color: var(--font-color-light);
    border-top-right-radius: 4px;
}

.message-time {
    font-size: 0.7rem;
    opacity: 0.7;
    margin-top: 4px;
    text-align: right;
}

/* --- FORMATO DE TEXTO MEJORADO PARA MENSAJES DEL BOT --- */
.message-bubble.bot .message-content strong,
.message-bubble.bot .message-content b {
    font-weight: 600;
    color: var(--font-color-dark);
}

.message-bubble.bot .message-content ul,
.message-bubble.bot .message-content ol {
    margin: 8px 0;
    padding-left: 20px;
}

.message-bubble.bot .message-content li {
    margin-bottom: 6px;
    line-height: 1.4;
}

.message-bubble.bot .message-content p {
    margin: 8px 0;
}

.message-bubble.bot .message-content p:first-child {
    margin-top: 0;
}

.message-bubble.bot .message-content p:last-child {
    margin-bottom: 0;
}

/* Estilo especial para listas de productos */
.message-bubble.bot .message-content .product-list {
    margin: 12px 0;
}

.message-bubble.bot .message-content .product-item {
    background: rgba(255, 255, 255, 0.7);
    border-left: 3px solid var(--header-bg);
    padding: 10px 12px;
    margin-bottom: 8px;
    border-radius: 4px;
}

.message-bubble.bot .message-content .product-name {
    font-weight: 600;
    color: var(--header-bg);
    display: block;
    margin-bottom: 4px;
}

.message-bubble.bot .message-content .product-price {
    font-weight: 600;
    color: var(--accent-color);
}

.message-bubble.bot .message-content .product-description {
    color: var(--font-color-medium);
    font-size: 0.9em;
    margin-top: 4px;
}

/* Indicador de escritura mejorado */
.typing-indicator {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: var(--bot-message-bg);
    border-radius: var(--border-radius-small);
    border-top-left-radius: 4px;
    align-self: flex-start;
    max-width: fit-content;
    margin-top: auto; /* Esto asegura que se quede al final */
}

.typing-indicator span {
    height: 8px;
    width: 8px;
    margin: 0 2px;
    background-color: #9e9e9e;
    border-radius: 50%;
    display: inline-block;
    animation: bounce 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* --- SECCIÓN DE CALIFICACIÓN MEJORADA --- */
.hidden {
    display: none !important;
}

#rating-section {
    padding: 20px;
    text-align: center;
    background: #fff;
    border-radius: var(--border-radius-small);
    box-shadow: var(--shadow-light);
    margin-top: 15px;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

#rating-section h4 {
    margin: 0 0 10px 0;
    color: var(--font-color-dark);
}

#rating-message-text {
    margin-bottom: 15px;
    color: var(--font-color-medium);
}

.rating-stars {
    margin-bottom: 15px;
    display: flex;
    justify-content: center;
    gap: 5px;
}

.star {
    font-size: 2.2rem;
    color: #e0e0e0;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.star:hover {
    transform: scale(1.1);
}

.star.active, .star:hover, .rating-stars:hover .star {
    color: #ffc107;
}

.star:hover ~ .star {
    color: #e0e0e0;
}

#rating-comment {
    width: 100%;
    margin-top: 15px;
    padding: 12px;
    border-radius: var(--border-radius-small);
    border: 1px solid #ddd;
    font-family: var(--font-family);
    resize: vertical;
    transition: var(--transition);
}

#rating-comment:focus {
    outline: none;
    border-color: var(--header-bg);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.1);
}

#rating-buttons {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    gap: 15px;
}

#rating-buttons button {
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius-small);
    color: white;
    cursor: pointer;
    font-weight: bold;
    transition: var(--transition);
}

#submit-rating-btn {
    background: var(--accent-color);
}

#submit-rating-btn:hover {
    background: #2d9247;
    transform: translateY(-2px);
}

#skip-rating-btn {
    background: #6c757d;
}

#skip-rating-btn:hover {
    background: #5a6268;
    transform: translateY(-2px);
}

/* --- MEJORAS DE ACCESIBILIDAD --- */
/* Enfocado para navegación con teclado */
#message:focus, #submitButton:focus, .star:focus,
#rating-comment:focus, #rating-buttons button:focus {
    outline: 2px solid var(--header-bg);
    outline-offset: 2px;
}

/* Texto de soporte para lectores de pantalla */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --- DISEÑO RESPONSIVO MEJORADO --- */
@media (max-width: 768px) {
    body {
        padding: 10px;
        height: auto;
        min-height: 100vh;
    }

    .chat-container {
        height: 95vh;
        max-height: none;
        border-radius: 12px;
    }

    .chat-header {
        padding: 15px;
    }

    .chat-body {
        padding: 15px;
        gap: 12px;
    }

    .message-bubble {
        max-width: 90%;
    }

    .chat-footer {
        padding: 12px 15px;
    }

    #message {
        padding: 12px 16px;
    }

    #submitButton {
        width: 44px;
        height: 44px;
    }

    .rating-stars {
        gap: 3px;
    }

    .star {
        font-size: 1.8rem;
    }

    #rating-buttons {
        flex-direction: column;
        gap: 10px;
    }

    #rating-buttons button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .chat-header .avatar {
        width: 38px;
        height: 38px;
    }

    .chat-header .bot-info .name {
        font-size: 1rem;
    }

    .message-bubble {
        max-width: 95%;
    }

    .message-bubble .message-content {
        padding: 10px 14px;
    }
}


.chat-box {
  background-color: #0f1115;
  padding: 1rem;
  border-radius: 12px;
  height: 500px;
  overflow-y: auto;
  color: #d1d5db;
}

.message {
  margin: 10px 0;
  padding: 10px 14px;
  border-radius: 8px;
  white-space: pre-wrap;
}

.user-message {
  background: #2563eb;
  color: #fff;
  align-self: flex-end;
}

.bot-message {
  background: #1f2937;
  border-left: 3px solid #3b82f6;
  font-family: "Inter", sans-serif;
  line-height: 1.4;
}

.catalog-item {
  background: #111827;
  margin: 6px 0;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #374151;
}

.catalog-item strong {
  color: #3b82f6;
}


.product-list {
  margin-top: 4px;
  line-height: 1.5;
}

.product-ul {
  list-style-type: "• ";
  padding-left: 16px;
  margin: 4px 0;
}

.product-ul li {
  margin-bottom: 6px;
  color: #e5e7eb;
  font-size: 14px;
}

.product-ul strong {
  color: #93c5fd;
}

.price {
  color: #a5b4fc;
  font-weight: 500;
}