/* Variables Globales (Modo Claro/Oscuro) */
:root {
    --bg-base: #ffffff;
    --bg-panel: #f8f9fa;
    --text-main: #333333;
    --color-rojo: #e63946;
    --border-color: #e0e0e0;
}

/* Soporte Nativo para Modo Oscuro */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-base: #121212;
        --bg-panel: #1e1e1e;
        --text-main: #f1f1f1;
        --color-rojo: #ef233c;
        --border-color: #333333;
    }
}

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

html, body { 
    background-color: var(--bg-base); 
    color: var(--text-main);
    font-family: Arial, Helvetica, sans-serif;
    height: 100vh;
    overflow: hidden; 
    scrollbar-width: none;
    -ms-overflow-style: none;
}

html::-webkit-scrollbar, 
body::-webkit-scrollbar { 
    display: none;
}

.seccion-principal {
    display: flex;
    height: 100%;
    width: 100%;
}

/* Botones Colapsar */
.btn-colapsar {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-main);
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.btn-colapsar:hover {
    color: var(--color-rojo);
}

/* --- MQ1 (Desktop) --- */
@media (min-width: 1025px) {
    /* Módulo Izquierdo (Menú) */
    .modulo-m1 {
        width: 250px;
        background-color: var(--bg-panel);
        border-right: 1px solid var(--border-color);
        display: flex;
        flex-direction: column;
        transition: width 0.3s ease;
    }
    .bloque-m11 { padding: 20px; }
    .contenido-m111 {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .bloque-m11 h2 { font-size: 1.2rem; color: var(--color-rojo); }
    .bloque-m12 { padding: 0 20px; }
    .btn-nuevo-chat {
        width: 100%;
        padding: 10px;
        background-color: transparent;
        border: 1px solid var(--color-rojo);
        color: var(--color-rojo);
        border-radius: 5px;
        cursor: pointer;
        transition: opacity 0.2s ease;
    }

    /* Módulo Central (Chat) */
    .modulo-c1 {
        flex: 1;
        display: flex;
        flex-direction: column;
        background-color: var(--bg-base);
    }
    .modulo-c1.is-empty {
        justify-content: center;
        align-items: center;
    }
    .modulo-c1.is-empty .bloque-c11 {
        flex: none;
        padding-bottom: 10px;
    }
    .modulo-c1.is-empty .bloque-c12 {
        border-top: none;
        width: 100%;
        padding-top: 10px;
    }
    .bloque-c11 {
        flex: 1;
        padding: 40px;
        overflow-y: auto;
        display: flex;
        flex-direction: column;
    }
    .bloque-c11.empty-state {
        justify-content: center;
        align-items: center;
        text-align: center;
    }
    .bienvenida-container {
        display: flex;
        flex-direction: column;
        gap: 15px;
        margin-bottom: 20px;
    }
    .titulo-bienvenida {
        font-size: 2rem;
        font-weight: 600;
        background: -webkit-linear-gradient(45deg, var(--color-rojo), #ff758c);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .subtitulo-bienvenida {
        font-size: 1.5rem;
        color: var(--text-main);
        opacity: 0.8;
    }
    .mensaje-ia {
        background-color: var(--bg-panel);
        padding: 15px;
        border-radius: 8px;
        margin-bottom: 20px;
        max-width: 80%;
        border-left: 4px solid var(--color-rojo);
    }
    .mensaje-user {
        background-color: var(--bg-panel);
        padding: 15px;
        border-radius: 8px;
        margin-bottom: 20px;
        max-width: 80%;
        align-self: flex-end;
        text-align: right;
        border-right: 4px solid var(--text-main);
    }
    .bloque-c12 {
        padding: 20px 40px;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .input-wrapper {
        display: flex;
        align-items: center;
        width: 100%;
        max-width: 800px;
        background-color: var(--bg-panel);
        border-radius: 30px;
        padding: 5px 15px;
        border: 1px solid var(--border-color);
        box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    }
    .input-wrapper input {
        flex: 1;
        padding: 15px;
        border: none;
        background-color: transparent;
        color: var(--text-main);
        font-size: 1.1rem;
        outline: none;
    }
    .btn-icon {
        background: transparent;
        border: none;
        color: var(--text-main);
        cursor: pointer;
        padding: 10px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: background-color 0.2s;
    }
    .btn-icon:hover {
        background-color: var(--border-color);
    }
    .btn-send {
        background-color: var(--text-main);
        color: var(--bg-base);
    }
    .btn-send:hover {
        background-color: var(--color-rojo);
    }

    /* Módulo Derecho (Contexto) */
    .modulo-p1 {
        width: 300px;
        background-color: var(--bg-panel);
        border-left: 1px solid var(--border-color);
        padding: 20px;
        transition: width 0.3s ease;
    }
    .contenido-p111 {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 20px;
    }
    .contenido-p111 h3 {
        font-size: 1rem;
        color: var(--color-rojo);
    }
    .contenido-p112 p {
        font-size: 0.9rem;
        line-height: 1.5;
        color: var(--text-main);
        opacity: 0.8;
    }

    /* Clases de estado Colapsado */
    .modulo-m1.colapsado {
        width: 60px;
    }
    .modulo-m1.colapsado h2 {
        display: none;
    }
    .modulo-m1.colapsado .btn-nuevo-chat {
        display: none;
    }
    .modulo-m1.colapsado .contenido-m111 {
        justify-content: center;
    }
    .modulo-m1.colapsado .bloque-m11 {
        padding: 20px 5px;
    }

    .modulo-p1.colapsado {
        width: 60px;
    }
    .modulo-p1.colapsado h3 {
        display: none;
    }
    .modulo-p1.colapsado .contenido-p112 {
        display: none;
    }
    .modulo-p1.colapsado .contenido-p111 {
        justify-content: center;
        margin-bottom: 0;
    }
    .modulo-p1.colapsado .bloque-p11 {
        padding: 0;
    }
}