:root {
    --chat-primary-color: #fbbf24; /* Amber-400 */
    --chat-bg-color: #1f2937; /* Gray-800 */
    --chat-text-color: #f3f4f6; /* Gray-100 */
    --chat-header-bg: #374151; /* Gray-700 */
    --user-message-bg: #fbbf24;
    --user-message-text: #111827;
    --bot-message-bg: #374151;
    --bot-message-text: #f3f4f6;
}

/* Botón Flotante para Abrir el Chat */
#chat-open-button {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 60px;
    height: 60px;
    background-color: var(--chat-primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    z-index: 999;
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}
#chat-open-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0,0,0,0.3);
}
#chat-open-button svg {
    width: 32px;
    height: 32px;
    color: #111827;
}

/* Contenedor Principal del Widget de Chat */
#chat-widget-container {
    position: fixed;
    bottom: 100px;
    right: 25px;
    width: 90%;
    max-width: 400px;
    height: 70vh;
    max-height: 600px;
    background-color: var(--chat-bg-color);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 1000;
    transform: translateY(20px) scale(0.95);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s ease-out, opacity 0.3s ease-out, visibility 0.3s;
}
#chat-widget-container.active {
    transform: translateY(0) scale(1);
    opacity: 1;
    visibility: visible;
}

/* Header del Chat */
.chat-widget-header {
    background-color: var(--chat-header-bg);
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--chat-text-color);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.chat-widget-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}
.chat-widget-actions {
    display: flex;
    gap: 8px;
}
.chat-widget-header button.icon-btn {
    background: none;
    border: 1px solid rgba(255,255,255,0.15);
    color: var(--chat-text-color);
    border-radius: 8px;
    font-size: 12px;
    padding: 6px 10px;
    cursor: pointer;
    opacity: 0.9;
}
.chat-widget-header button.icon-btn:hover { opacity: 1; }
.chat-widget-header #chat-close-button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--chat-text-color);
    opacity: 0.7;
    transition: opacity 0.2s;
}
.chat-widget-header #chat-close-button:hover { opacity: 1; }
.chat-widget-header #chat-close-button svg { width: 24px; height: 24px; }

/* Contenedor de Mensajes */
#chat-messages {
    flex-grow: 1;
    padding: 16px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
#chat-messages::-webkit-scrollbar { width: 6px; }
#chat-messages::-webkit-scrollbar-track { background: transparent; }
#chat-messages::-webkit-scrollbar-thumb { background-color: var(--chat-primary-color); border-radius: 3px; }

/* Estilos de Mensajes */
.chat-message { display: flex; align-items: flex-end; gap: 10px; max-width: 85%; animation: message-fade-in 0.4s ease-out; }
.chat-message .avatar { width: 32px; height: 32px; border-radius: 50%; background-color: var(--chat-header-bg); display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0; }
.chat-message .message-content { padding: 10px 14px; border-radius: 16px; color: var(--bot-message-text); }
.chat-message.bot { align-self: flex-start; }
.chat-message.bot .avatar { background-color: var(--chat-primary-color); color: #111827; }
.chat-message.bot .message-content { background-color: var(--bot-message-bg); border-bottom-left-radius: 4px; }
.chat-message.user { align-self: flex-end; flex-direction: row-reverse; }
.chat-message.user .avatar { display: none; }
.chat-message.user .message-content { background-color: var(--user-message-bg); color: var(--user-message-text); border-bottom-right-radius: 4px; }

/* Quick replies */
.quick-replies { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.quick-reply { background: rgba(255,255,255,0.08); color: var(--chat-text-color); border: 1px solid rgba(255,255,255,0.15); padding: 6px 10px; border-radius: 999px; font-size: 12px; cursor: pointer; }
.quick-reply:hover { background: rgba(255,255,255,0.15); }

/* Indicador de Escritura */
.typing-indicator .dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background-color: currentColor; opacity: 0.5; animation: typing-blink 1.4s infinite both; }
.typing-indicator .dot:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator .dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing-blink { 0% { opacity: 0.2; } 20% { opacity: 1; } 100% { opacity: 0.2; } }

/* Formulario de Envío */
#chat-form { display: flex; padding: 12px; border-top: 1px solid rgba(255,255,255,0.1); gap: 10px; }
#chat-input { flex-grow: 1; background-color: var(--chat-header-bg); border: 1px solid transparent; border-radius: 8px; padding: 12px; color: var(--chat-text-color); font-size: 1rem; resize: none; transition: border-color 0.2s; }
#chat-input:focus { outline: none; border-color: var(--chat-primary-color); }
#chat-send-btn { flex-shrink: 0; width: 48px; height: 48px; border-radius: 8px; border: none; background-color: var(--chat-primary-color); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background-color 0.2s; }
#chat-send-btn:disabled { background-color: #4b5563; cursor: not-allowed; }
#chat-send-btn svg { width: 24px; height: 24px; color: #111827; }

@keyframes message-fade-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }