/* ============================================================================
   MOD-330 · NODO (asistente de IA)                                OMN-651 · S2
   Notion × Linear × GitHub (DESIGN.md): bordes de 1 px, sin sombras ni
   degradados, color sólo donde significa algo. Todo acotado a `.nd-app` con
   prefijo `nd-`. Los tokens DERIVAN de los globales de `app.css` (modo día/noche).
   ========================================================================== */
.nd-app {
    --nd-fondo: var(--bg2, #ffffff);
    --nd-base: var(--bg, #f7f8fa);
    --nd-hundido: var(--bg3, #eef0f3);
    --nd-borde: var(--border, #e6e8ec);
    --nd-tx: var(--text, #151b2e);
    --nd-tx2: var(--text2, #5a6577);
    --nd-tx3: color-mix(in srgb, var(--dim, #6b7684) 88%, var(--text, #151b2e));
    --nd-acc: var(--turq, #0e7c86);
    --nd-rojo: var(--red, #dc3b3b);
    --nd-amarillo: var(--yellow, #b7791f);
    --nd-verde: var(--green, #2f855a);
    --nd-mono: var(--font-mono, ui-monospace, Menlo, Consolas, monospace);
    color: var(--nd-tx); text-transform: none;
    display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 16px;
    height: calc(100vh - 110px); min-height: 480px; padding: 20px 28px 24px; box-sizing: border-box;
}
/* El tema pone MAYÚSCULAS a casi todo texto de la app; un chat con el texto de la gente (y de la IA) las respeta como se escribieron. */
.nd-app, .nd-app * { text-transform: none; }
.nd-app button, .nd-app textarea { font: inherit; }
.nd-lado { display: flex; flex-direction: column; min-height: 0; border: 1px solid var(--nd-borde); border-radius: 8px; background: var(--nd-fondo); overflow: hidden; }
.nd-lado-cab { padding: 12px; border-bottom: 1px solid var(--nd-borde); }
.nd-lista { flex: 1; min-height: 0; overflow-y: auto; padding: 6px; }
.nd-lista-vacia { padding: 16px 12px; font-size: 12px; color: var(--nd-tx3); }
.nd-conv { display: flex; align-items: center; gap: 6px; padding: 8px 10px; border-radius: 6px; cursor: pointer; font-size: 13px; color: var(--nd-tx2); border: 1px solid transparent; }
.nd-conv:hover { background: var(--nd-hundido); }
.nd-conv[aria-current="true"] { background: var(--nd-hundido); color: var(--nd-tx); border-color: var(--nd-borde); }
.nd-conv-t { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nd-conv-f { font-size: 11px; color: var(--nd-tx3); flex: none; }

.nd-btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 32px; padding: 0 12px; font-size: 13px; color: var(--nd-tx);
    background: var(--nd-fondo); border: 1px solid var(--nd-borde); border-radius: 6px; cursor: pointer; }
.nd-btn:hover { background: var(--nd-hundido); }
.nd-btn:focus-visible, .nd-entrada:focus-visible, .nd-conv:focus-visible { outline: 2px solid var(--nd-acc); outline-offset: 1px; }
.nd-btn:disabled { opacity: .5; cursor: default; }
.nd-btn-pri { background: var(--nd-acc); border-color: var(--nd-acc); color: var(--nd-fondo); }
.nd-btn-pri:hover { background: color-mix(in srgb, var(--nd-acc) 88%, var(--nd-tx)); }
.nd-btn-peligro { color: var(--nd-rojo); border-color: color-mix(in srgb, var(--nd-rojo) 40%, var(--nd-borde)); }
.nd-btn-ico { width: 32px; padding: 0; }
.nd-lado-cab .nd-btn { width: 100%; }

.nd-panel { display: flex; flex-direction: column; min-height: 0; min-width: 0; border: 1px solid var(--nd-borde); border-radius: 8px; background: var(--nd-fondo); }
.nd-cab { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--nd-borde); }
.nd-cab-t { font-size: 15px; font-weight: 650; margin: 0; letter-spacing: -.01em; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nd-cab-s { font-size: 12px; color: var(--nd-tx3); margin: 2px 0 0; }
.nd-hilo { flex: 1; min-height: 0; overflow-y: auto; padding: 18px 20px; display: flex; flex-direction: column; gap: 12px; }

.nd-msj { max-width: min(760px, 88%); font-size: 14px; line-height: 1.55; word-wrap: break-word; overflow-wrap: anywhere; }
.nd-msj-u { align-self: flex-end; background: color-mix(in srgb, var(--nd-acc) 12%, var(--nd-fondo)); border: 1px solid color-mix(in srgb, var(--nd-acc) 35%, var(--nd-borde)); border-radius: 10px 10px 2px 10px; padding: 9px 13px; }
.nd-msj-a { align-self: flex-start; padding: 2px 2px; }
.nd-msj-a p, .nd-msj-u p { margin: 0 0 6px; }
.nd-msj-a ul { margin: 4px 0 8px; padding-left: 20px; }
.nd-msj code { font-family: var(--nd-mono); font-size: 12px; padding: 1px 5px; background: var(--nd-hundido); border: 1px solid var(--nd-borde); border-radius: 4px; }
.nd-tarjeta { align-self: flex-start; display: inline-flex; align-items: center; gap: 8px; max-width: min(760px, 88%); padding: 5px 11px; font-size: 12px; color: var(--nd-tx2);
    background: var(--nd-base); border: 1px solid var(--nd-borde); border-radius: 999px; }
.nd-tarjeta i { font-size: 11px; }
.nd-tarjeta-ok i { color: var(--nd-verde); }
.nd-tarjeta-mal i { color: var(--nd-rojo); }
.nd-tarjeta-esc { border-color: color-mix(in srgb, var(--nd-acc) 45%, var(--nd-borde)); }
.nd-sistema { align-self: center; max-width: 720px; padding: 8px 14px; font-size: 12px; color: var(--nd-amarillo); background: color-mix(in srgb, var(--nd-amarillo) 8%, var(--nd-fondo)); border: 1px solid color-mix(in srgb, var(--nd-amarillo) 45%, var(--nd-borde)); border-radius: 8px; }
.nd-sistema.nd-error { color: var(--nd-rojo); background: color-mix(in srgb, var(--nd-rojo) 7%, var(--nd-fondo)); border-color: color-mix(in srgb, var(--nd-rojo) 45%, var(--nd-borde)); }
.nd-pensando { align-self: flex-start; font-size: 13px; color: var(--nd-tx3); display: inline-flex; align-items: center; gap: 8px; }
.nd-pensando i { color: var(--nd-acc); }

.nd-confirma { align-self: flex-start; width: min(620px, 92%); padding: 12px 14px; border: 1px solid color-mix(in srgb, var(--nd-amarillo) 55%, var(--nd-borde)); border-radius: 8px; background: color-mix(in srgb, var(--nd-amarillo) 7%, var(--nd-fondo)); }
.nd-confirma-t { font-size: 11px; font-weight: 650; letter-spacing: .06em; text-transform: uppercase; color: var(--nd-amarillo); margin: 0 0 6px; }
.nd-confirma ul { margin: 0 0 10px; padding-left: 18px; font-size: 13px; }
.nd-confirma-b { display: flex; gap: 8px; }

.nd-inicio { margin: auto; text-align: center; max-width: 520px; color: var(--nd-tx2); font-size: 13px; }
.nd-inicio h2 { font-size: 18px; margin: 0 0 6px; color: var(--nd-tx); letter-spacing: -.01em; }
.nd-sugs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 14px; }

.nd-compositor { display: flex; gap: 8px; align-items: flex-end; padding: 12px 16px; border-top: 1px solid var(--nd-borde); }
.nd-entrada { flex: 1; min-height: 40px; max-height: 160px; resize: none; padding: 9px 12px; font-size: 14px; line-height: 1.4; color: var(--nd-tx); background: var(--nd-base); border: 1px solid var(--nd-borde); border-radius: 8px; box-sizing: border-box; }
.nd-ayuda { padding: 0 16px 10px; font-size: 11px; color: var(--nd-tx3); }
.nd-vacio { margin: auto; padding: 40px 16px; text-align: center; color: var(--nd-tx2); font-size: 13px; }
.nd-vacio.nd-error { color: var(--nd-rojo); }
@media (max-width: 900px) { .nd-app { grid-template-columns: 1fr; height: auto; } .nd-lado { max-height: 200px; } .nd-panel { height: 70vh; } }

/* ── Chip de IA en la lista de Correos (31-mailer) · 4.22.0 ─────────────────── */
.mlr-th-ia { display: inline-flex; align-items: center; gap: 5px; margin-right: 6px; padding: 1px 8px; font-size: 10px; font-weight: 650; letter-spacing: .04em; white-space: nowrap;
    border: 1px solid; border-radius: 999px; vertical-align: middle; color: var(--turq, #0e7c86); border-color: color-mix(in srgb, var(--turq, #0e7c86) 45%, var(--border, #e6e8ec)); background: color-mix(in srgb, var(--turq, #0e7c86) 8%, var(--bg2, #fff)); }
.mlr-th-ia i { font-size: 9px; }
.mlr-th-ia-u2 { color: var(--yellow, #b7791f); border-color: color-mix(in srgb, var(--yellow, #b7791f) 50%, var(--border, #e6e8ec)); background: color-mix(in srgb, var(--yellow, #b7791f) 9%, var(--bg2, #fff)); }
.mlr-th-ia-u3 { color: var(--red, #dc3b3b); border-color: color-mix(in srgb, var(--red, #dc3b3b) 55%, var(--border, #e6e8ec)); background: color-mix(in srgb, var(--red, #dc3b3b) 9%, var(--bg2, #fff)); }
.mlr-th-ia-off { color: var(--dim, #6b7684); border-color: var(--border, #e6e8ec); background: var(--bg3, #eef0f3); font-weight: 500; }

.nd-confirma .nd-det { margin: 4px 0 2px; padding-left: 16px; font-size: 12px; color: var(--nd-tx2); font-family: var(--nd-mono); }
.nd-app > .nd-vacio { grid-column: 1 / -1; }