/* =========================================
   RAG CHAT WIDGET - PBTechnologies
   ========================================= */

:root {
    --pbt-dark: #222222;       
    --pbt-dark-sec: #333333;   
    --pbt-red: #da291c;        
    --pbt-red-hover: #b52217;  
    --pbt-light: #f8fafc;      
}

#rag-chat-widget {
    position: fixed;
    bottom: 20px;
    left: 20px; 
    right: auto; 
    z-index: 999999;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

/* ----- MENSAJE FLOTANTE EXTERNO (TOOLTIP) ----- */
.rag-chat-tooltip {
    position: absolute;
    left: 85px;
    bottom: 12px;
    background: white;
    padding: 12px 18px;
    border-radius: 15px 15px 15px 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    font-size: 14px;
    color: var(--pbt-dark);
    font-weight: 500;
    white-space: nowrap;
    border: 1px solid #e2e8f0;
    cursor: pointer;
    animation: bounceInTooltip 0.6s ease;
    transform-origin: bottom left;
    z-index: 1000000;
}

.rag-chat-tooltip::after {
    content: '';
    position: absolute;
    left: -8px;
    bottom: 0;
    border-width: 0 10px 12px 0;
    border-style: solid;
    border-color: transparent white transparent transparent;
}

@keyframes bounceInTooltip {
    0% { opacity: 0; transform: scale(0.5); }
    100% { opacity: 1; transform: scale(1); }
}

/* ----- BOTÓN FLOTANTE ----- */
#rag-chat-button {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    background: var(--pbt-dark);
    background-image: url('https://pbt.com.bo/wp-content/uploads/2025/04/ico_griss_vr4_S.png');
    background-size: 60%; 
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    border: 2px solid var(--pbt-red);
    color: transparent; 
    font-size: 0;
}

#rag-chat-button:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(218, 41, 28, 0.4); 
}

#rag-chat-button * {
    display: none !important;
}

/* ----- VENTANA DEL CHAT ----- */
#rag-chat-window {
    position: absolute;
    bottom: 85px;
    left: 0; 
    right: auto;
    width: 380px;
    height: 550px; /* Reducido ligeramente */
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.1);
    display: none; 
    animation: slideInLeft 0.3s ease;
    transform-origin: bottom left;
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateY(20px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ----- HEADER DEL CHAT ----- */
#rag-chat-header {
    padding: 15px 20px; /* Reducido */
    background: linear-gradient(135deg, var(--pbt-dark), var(--pbt-dark-sec));
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 16px;
    border-bottom: 3px solid var(--pbt-red); 
    flex-shrink: 0; /* Evita que se encoja */
}

#rag-chat-header span::before {
    content: "⚙️"; 
    margin-right: 8px;
    font-size: 18px;
}

#rag-chat-close {
    background: transparent;
    border: none;
    color: white;
    font-size: 28px;
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    line-height: 1;
    padding: 0;
}

#rag-chat-close:hover {
    color: var(--pbt-red);
    transform: rotate(90deg);
}

/* ----- ÁREA DE MENSAJES ----- */
#rag-chat-messages {
    flex: 1 1 auto; /* Crece y se encoge automáticamente */
    padding: 15px;
    overflow-y: auto;
    background: var(--pbt-light);
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 0; /* IMPORTANTE: permite que se encoja */
    height: 100%; /* Ocupa el espacio disponible */
}

.rag-message {
    max-width: 85%;
    padding: 10px 14px; /* Reducido */
    border-radius: 16px;
    line-height: 1.4;
    font-size: 14px;
    word-wrap: break-word;
    animation: messageAppear 0.3s ease;
}

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

.rag-message.user {
    background: var(--pbt-red);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
    box-shadow: 0 2px 5px rgba(218, 41, 28, 0.2);
}

.rag-message.bot {
    background: white;
    color: #1e293b;
    align-self: flex-start;
    border-bottom-left-radius: 4px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-left: 3px solid var(--pbt-dark); 
}

.message-time {
    font-size: 9px;
    opacity: 0.7;
    margin-top: 4px;
    text-align: right;
}

/* ----- ÁREA DE ENTRADA ----- */
#rag-chat-input-area {
    padding: 12px 15px; /* Reducido */
    background: white;
    border-top: 1px solid #e2e8f0;
    display: flex;
    gap: 8px;
    align-items: center;
    flex-shrink: 0; /* Evita que se encoja */
}

#rag-chat-input {
    flex: 1;
    padding: 10px 15px;
    border: 2px solid #e2e8f0;
    border-radius: 25px;
    outline: none;
    font-size: 14px;
    transition: all 0.2s;
    background: var(--pbt-light);
}

#rag-chat-input:focus {
    border-color: var(--pbt-dark);
    background: white;
}

#rag-chat-send {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--pbt-red);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    box-shadow: 0 2px 5px rgba(218, 41, 28, 0.3);
    padding: 0; 
    flex-shrink: 0;
}

#rag-chat-send svg {
    margin-left: 2px;
    width: 18px;
    height: 18px;
}

#rag-chat-send:hover {
    transform: scale(1.1);
    background: var(--pbt-red-hover);
}

/* ----- INDICADOR DE ESCRITURA ----- */
#rag-chat-typing {
    padding: 8px 15px;
    background: white;
    border-top: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    gap: 5px;
    flex-shrink: 0;
}

.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--pbt-dark);
    opacity: 0.6;
    animation: typingAnimation 1.4s infinite;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingAnimation {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.6; }
    30% { transform: translateY(-5px); opacity: 1; }
}

/* ----- FORMATO DE RESPUESTAS ----- */
.rag-message.bot strong {
    color: var(--pbt-red);
    font-weight: 600;
}
.rag-message.bot ul, .rag-message.bot ol {
    margin: 5px 0;
    padding-left: 18px;
}
.rag-message.bot li {
    margin: 3px 0;
}

/* ----- SCROLL PERSONALIZADO ----- */
#rag-chat-messages::-webkit-scrollbar { width: 5px; }
#rag-chat-messages::-webkit-scrollbar-track { background: #e2e8f0; border-radius: 10px; }
#rag-chat-messages::-webkit-scrollbar-thumb { background: var(--pbt-dark-sec); border-radius: 10px; }

/* ----- RESPONSIVE (MÓVILES) ----- */
@media (max-width: 480px) {
    #rag-chat-widget { left: 15px; bottom: 15px; }
    #rag-chat-window {
        width: 100vw;
        height: 100vh;
        bottom: -15px;
        left: -15px;
        border-radius: 0;
        position: fixed;
    }
    .rag-chat-tooltip { display: none; }
    #rag-chat-messages { padding: 10px; }
}