/* --- Indicador de Escritura Mejorado (Spinner) --- */
/* Contenedor del indicador */
.typing-indicator {
    display: flex;
    align-items: center;
    justify-content: flex-start; /* Alinea el spinner a la izquierda dentro del mensaje */
    padding: 10px 0;
}

/* El contenedor del spinner en sí */
.typing-spinner {
    display: inline-block;
    position: relative;
    width: 20px; /* Ancho del spinner */
    height: 20px; /* Alto del spinner */
}

    /* Estilo base para los elementos del spinner */
    .typing-spinner div {
        box-sizing: border-box;
        display: block;
        position: absolute;
        width: 16px; /* Ancho del círculo */
        height: 16px; /* Alto del círculo */
        margin: 2px; /* Espacio entre borde y contenedor */
        border: 2px solid var(--primary); /* Color del spinner, usa tu variable CSS */
        border-radius: 50%;
        animation: typing-spinner 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
        border-color: var(--primary) transparent transparent transparent; /* Solo un borde visible */
    }

        /* Animaciones para cada parte del spinner, creando el efecto de rotación con demora */
        .typing-spinner div:nth-child(1) {
            animation-delay: -0.45s; /* Primer elemento */
        }

        .typing-spinner div:nth-child(2) {
            animation-delay: -0.3s; /* Segundo elemento */
        }

        .typing-spinner div:nth-child(3) {
            animation-delay: -0.15s; /* Tercer elemento */
        }

/* La animación de rotación */
@keyframes typing-spinner {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}


/* --- Indicador de Escritura --- */
/*.typing-indicator {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 10px 0;*/ /* Añade algo de espacio vertical */
/*}

    .typing-indicator .dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background-color: var(--text-light);
        animation: typing-bounce 1.4s infinite ease-in-out;
    }*/
        /* Aplicar un retraso a cada punto para crear el efecto de onda */
        /*.typing-indicator .dot:nth-child(1) {
            animation-delay: 0s;
        }

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

        .typing-indicator .dot:nth-child(3) {
            animation-delay: 0.4s;
        }*/

/* Animación de rebote */
/*@keyframes typing-bounce {
    0%, 60%, 100% {
        transform: translateY(0);
    }

    30% {
        transform: translateY(-5px);
    }
}*/

/* --- Variables CSS --- */
:root {
    --bg-main: #f7f9fc;
    --bg-sidebar: #ffffff;
    --bg-chat: #ffffff;
    --bg-input: #ffffff;
    --bg-message-user: #e1eefe;
    --bg-message-assistant: #f0f4f9;
    --bg-code: #161b22;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-light: #6b7280;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.6;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}
/* --- Sidebar --- */
.sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 16px;
    transition: width 0.3s ease, padding 0.3s ease, transform 0.3s ease;
    flex-shrink: 0;
    z-index: 10;
}

    .sidebar.collapsed {
        width: 0;
        padding: 16px 0;
        border-right: none;
        transform: translateX(-280px);
    }

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
}

.new-chat-btn {
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    font-size: 15px;
    cursor: pointer;
    transition: background-color 0.2s, box-shadow 0.2s;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-toggle-btn {
    background: none;
    border: 1px solid var(--border-color);
    width: 44px;
    height: 44px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: background-color 0.2s, color 0.2s;
    flex-shrink: 0;
}

    .sidebar-toggle-btn:hover {
        background-color: var(--bg-main);
        color: var(--primary);
    }

.history-container {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}

.chat-history {
    list-style: none;
}

    .chat-history li {
        padding: 10px 12px;
        border-radius: 6px;
        cursor: pointer;
        margin-bottom: 4px;
        font-size: 14px;
        color: var(--text-secondary);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        transition: background-color 0.2s, color 0.2s;
    }

        .chat-history li:hover {
            background-color: var(--bg-main);
            color: var(--text-primary);
        }

        .chat-history li.active {
            background-color: var(--primary);
            color: white;
            font-weight: 500;
        }
/* --- Main Chat Area --- */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-chat);
    overflow: hidden;
    position: relative;
}

.sidebar-toggle-btn.open {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 100;
    background-color: var(--bg-sidebar);
    box-shadow: var(--shadow);
}

.chat-messages {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    /*overflow-x: hidden;*/ /* Evita el scroll horizontal */
    scroll-behavior: smooth;
}

.message {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 10px;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: bold;
    color: white;
}

.user-avatar {
    background-color: var(--primary);
}

.assistant-avatar {
    background: linear-gradient(135deg, #10b981, #3b82f6);
}

.message-content {
    flex: 1;
    padding: 14px 18px;
    border-radius: 12px;
}

.user .message-content {
    background-color: var(--bg-message-user);
}

.assistant .message-content {
    background-color: var(--bg-message-assistant);
}

.message-text {
    line-height: 1.7;
    color: var(--text-primary);
    word-break: break-word;
}

    .message-text p {
        margin-bottom: 0.5em;
    }

        .message-text p:last-child {
            margin-bottom: 0;
        }

    .message-text pre {
        background-color: var(--bg-code);
        color: #e6edf3;
        border-radius: 8px;
        padding: 16px;
        overflow-x: auto;
        margin: 12px 0;
        font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
        font-size: 14px;
        position: relative; /* Necesario para posicionar el botón de descarga */
    }

    .message-text code:not(pre code) {
        background-color: rgba(0,0,0,0.08);
        padding: .2em .4em;
        border-radius: 4px;
        font-family: 'SF Mono', 'Fira Code', monospace;
        font-size: 0.9em;
    }
/* --- Botón de Descarga de Código --- */
.download-code-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: rgba(255, 255, 255, 0.8); /* Fondo semi-transparente */
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 6px 10px;
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease, background-color 0.2s ease;
    display: flex;
    align-items: center;
    gap: 5px; /* Espacio entre icono y texto */
    z-index: 1; /* Asegurar que esté por encima del código */
}

    .download-code-btn:hover {
        background-color: rgba(255, 255, 255, 1); /* Fondo sólido al pasar el mouse */
        border-color: var(--primary);
    }

/* Mostrar botón al pasar el mouse sobre el contenedor del bloque de código */
.message-text pre:hover .download-code-btn {
    opacity: 1;
}

/* Ajustar padding-top para la primera línea de código y evitar solapamiento */
.message-text pre code.hljs {
    padding-top: 30px; /* Ajustar según la altura del botón + padding + margen */
}
/* --- Input Area --- */
.input-area {
    padding: 16px 24px;
    background-color: var(--bg-input);
    border-top: 1px solid var(--border-color);
}

.input-wrapper {
    display: flex;
    align-items: center; /* Cambiado a center para alinear con el botón circular */
    gap: 12px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 24px; /* Bordes más redondeados para el contenedor */
    padding: 8px 8px 8px 20px; /* Ajuste de padding */
    transition: box-shadow 0.2s, border-color 0.2s;
    max-width: 850px;
    margin: 0 auto;
}

    .input-wrapper:focus-within {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
    }

#chat-input {
    flex: 1;
    background: none;
    border: none;
    resize: none;
    /*max-height: 150px;*/
    min-height: 60px; /* Nuevo alto mínimo */
    max-height: 200px; /* Aumentar el máximo */
    padding: 10px 0; /* Padding vertical */
    font-size: 16px;
    line-height: 1.6;
    outline: none;
    font-family: var(--font-family);
}
/* estilo del botón */
.send-btn {
    width: 44px; /* Tamaño aumentado */
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 50%; /* Lo hace perfectamente circular */
    cursor: pointer;
    flex-shrink: 0;
    transition: background-color 0.2s, transform 0.2s ease;
}

    .send-btn:hover {
        background-color: var(--primary-hover);
        transform: translateY(-2px); /* Efecto de elevación */
    }

    .send-btn:disabled {
        background-color: #94a3b8;
        cursor: not-allowed;
        transform: none;
    }

.input-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    padding: 0 8px;
    max-width: 850px;
    margin: 12px auto 0;
}

.model-selector {
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-input);
    color: var(--text-secondary);
    font-size: 13px;
    text-align: center;
}

.disclaimer {
    font-size: 12px;
    color: var(--text-light);
}

.file-btn, .web-search-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    flex-shrink: 0;
    transition: background-color 0.2s;
    color: var(--text-secondary);
}

    .file-btn:hover, .web-search-btn:hover {
        background-color: rgba(0, 0, 0, 0.05);
    }

    .web-search-btn.active {
        background-color: var(--primary);
        color: white;
    }

.file-preview {
    max-width: 850px;
    margin: 12px auto 0;
    padding: 12px;
    background-color: var(--bg-message-assistant);
    border-radius: 12px;
    border: 1px dashed var(--border-color);
}

.file-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.clear-files-btn {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: var(--text-light);
    padding: 0 6px;
}

    .clear-files-btn:hover {
        color: var(--primary);
    }

.file-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background-color: var(--bg-input);
    border-radius: 6px;
    font-size: 13px;
}

.file-icon {
    color: var(--primary);
}

.file-size {
    color: var(--text-light);
    font-size: 12px;
}
/* --- Responsive & Mobile --- 768 */
@media (max-width: 600px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        position: fixed;
        height: 100%;
        transform: translateX(-100%);
    }

        .sidebar.collapsed {
            transform: translateX(-100%);
        }

    .sidebar-toggle-btn,
    .sidebar-toggle-btn.open {
        display: none;
    }

    .chat-messages {
        padding: 16px;
    }

    .message {
        padding: 0;
    }

    .input-area {
        padding: 12px;
    }

    .input-footer {
        flex-direction: column;
        gap: 12px;
        align-items: center;
        max-width: 100%;
        margin-top: 16px;
        padding: 0px 8px 20px 8px;
    }

    .model-selector {
        width: 100%;
        max-width: 400px;
        font-size: 14px;
        padding: 10px;
    }

    .disclaimer {
        text-align: center;
    }
}

.toast-notification {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1000;
}

    .toast-notification.show {
        opacity: 1;
    }

.attached-files {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--border-color);
    font-size: 14px;
}

.file-attachments {
    list-style: none;
    margin-top: 8px;
}

    .file-attachments li {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 6px 0;
        color: var(--text-secondary);
    }

    .file-attachments .file-icon {
        font-size: 16px;
    }