:root{
  --verde:#00a884;--verde2:#06cf9c;--azul-tick:#53bdeb;--rojo:#ea0038;
  --fondo:#eae6df;--lado:#fff;--barra:#f0f2f5;--borde:#e9edef;--txt:#111b21;--sub:#667781;
  --burbuja-yo:#d9fdd3;--burbuja:#fff;--hover:#f5f6f6;--sistema:#ffeecd;--input:#fff;
  --patron:rgba(0,0,0,.035);
}
@media (prefers-color-scheme:dark){:root{
  --fondo:#0b141a;--lado:#111b21;--barra:#202c33;--borde:#222d34;--txt:#e9edef;--sub:#8696a0;
  --burbuja-yo:#005c4b;--burbuja:#202c33;--hover:#202c33;--sistema:#182229;--input:#2a3942;--patron:rgba(255,255,255,.02);
}}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overflow:hidden}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,sans-serif;background:var(--fondo);color:var(--txt);font-size:15px}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
input,textarea{font:inherit;color:var(--txt)}
.oculto{display:none!important}.flex1{flex:1}

/* ---------- Login ---------- */
#pantalla-login{height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,var(--verde) 0 35%,var(--fondo) 35%)}
.login-card{background:var(--lado);padding:32px 28px;border-radius:16px;width:min(360px,92vw);box-shadow:0 12px 40px #0003;display:flex;flex-direction:column;gap:12px;text-align:center}
.login-logo{width:84px;height:84px;margin:0 auto;border-radius:22px}
.login-card h1{margin:0}.sub{margin:0 0 8px;color:var(--sub);font-size:13px}.nota{color:var(--sub);font-size:12px;margin:4px 0 0}
.login-card input{padding:13px 14px;border-radius:10px;border:1px solid var(--borde);background:var(--input);outline:none}
.login-card input:focus{border-color:var(--verde)}
.btn-primario{background:var(--verde);color:#fff;padding:13px;border-radius:10px;font-weight:600}
.btn-primario:active{background:var(--verde2)}.btn-primario:disabled{opacity:.6}
.alerta{background:#fde8e8;color:#b71c1c;padding:10px;border-radius:8px;font-size:13px}

/* ---------- Layout ---------- */
#pantalla-app{display:flex;height:100%;height:100dvh;max-width:1600px;margin:0 auto}
#lado{width:400px;min-width:300px;background:var(--lado);border-right:1px solid var(--borde);display:flex;flex-direction:column}
#chat{flex:1;display:flex;flex-direction:column;min-width:0;position:relative;background:var(--fondo)}
.barra{display:flex;align-items:center;gap:8px;padding:8px 12px;padding-top:max(8px,env(safe-area-inset-top));background:var(--barra);min-height:60px}
.titulo-app{flex:1;font-size:19px;color:var(--verde)}
.icono{width:40px;height:40px;border-radius:50%;font-size:20px;display:inline-flex;align-items:center;justify-content:center;color:var(--sub);flex-shrink:0}
.icono:hover{background:var(--hover)}.icono.rojo{color:var(--rojo)}
.av-btn{padding:0;border-radius:50%}
.estado-con{width:10px;height:10px;border-radius:50%;background:#bbb}.estado-con.on{background:var(--verde)}.estado-con.off{background:var(--rojo)}
.buscador{padding:8px 12px;border-bottom:1px solid var(--borde)}
.buscador input{width:100%;padding:9px 14px;border-radius:9px;border:0;background:var(--barra);outline:none}
.banner{background:var(--verde);color:#fff;padding:10px 14px;font-size:13px;display:flex;gap:8px;align-items:center}
.banner span{flex:1}.banner button{background:#fff;color:var(--verde);padding:5px 10px;border-radius:6px;font-weight:600}
#lista-chats{flex:1;overflow-y:auto}

/* ---------- Avatares ---------- */
.av{width:49px;height:49px;border-radius:50%;object-fit:cover;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:19px;background:hsl(var(--h,160),40%,45%);position:relative;overflow:hidden}
.av.sm{width:40px;height:40px;font-size:16px}.av.xs{width:32px;height:32px;font-size:13px}.av.xl{width:160px;height:160px;font-size:60px}
.av img{width:100%;height:100%;object-fit:cover}
.av-wrap{position:relative;flex-shrink:0}.av-wrap .online{position:absolute;right:1px;bottom:1px;width:13px;height:13px;border-radius:50%;background:var(--verde);border:2px solid var(--lado)}

/* ---------- Lista de chats ---------- */
.item-chat{display:flex;gap:12px;align-items:center;padding:10px 14px;cursor:pointer}
.item-chat:hover{background:var(--hover)}.item-chat.act{background:var(--barra)}
.item-chat .medio{flex:1;min-width:0;border-bottom:1px solid var(--borde);padding-bottom:10px;margin-bottom:-10px}
.item-chat .l1,.item-chat .l2{display:flex;align-items:center;gap:6px}
.item-chat .nombre{flex:1;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item-chat .hora{font-size:12px;color:var(--sub)}.item-chat .hora.nuevo{color:var(--verde)}
.item-chat .previa{flex:1;color:var(--sub);font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item-chat .previa.esc{color:var(--verde)}
.contador{background:var(--verde);color:#fff;border-radius:12px;min-width:20px;height:20px;font-size:12px;display:inline-flex;align-items:center;justify-content:center;padding:0 6px;font-weight:600}
.silencio{font-size:12px;opacity:.6}
.vacio-lista{text-align:center;color:var(--sub);padding:40px 20px}

/* ---------- Chat ---------- */
.chat-vacio{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--sub);background:var(--barra);border-bottom:6px solid var(--verde)}
.chat-vacio img{width:120px;opacity:.85;border-radius:28px}.chat-vacio h2{color:var(--txt);font-weight:300;font-size:30px;margin:16px 0 8px}
#chat-abierto{display:flex;flex-direction:column;height:100%;min-height:0}
.barra-chat{border-left:1px solid var(--borde)}
.atras{display:none}
.chat-cab{flex:1;display:flex;align-items:center;gap:10px;cursor:pointer;min-width:0}
.chat-cab .tx{min-width:0}.chat-cab b{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chat-cab small{color:var(--sub);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}
.chat-cab small.esc{color:var(--verde)}
.mensajes{flex:1;overflow-y:auto;padding:12px 6% 8px;display:flex;flex-direction:column;gap:2px;
  background-color:var(--fondo);background-image:radial-gradient(var(--patron) 1.5px,transparent 1.5px);background-size:22px 22px}
.cargar-mas{align-self:center;background:var(--burbuja);padding:6px 14px;border-radius:8px;font-size:13px;color:var(--sub);margin-bottom:6px}
.separador-dia{align-self:center;background:var(--burbuja);color:var(--sub);font-size:12px;padding:5px 12px;border-radius:8px;margin:10px 0;box-shadow:0 1px .5px #0002;text-transform:uppercase}
.msg{max-width:min(75%,560px);padding:6px 8px 8px 9px;border-radius:8px;background:var(--burbuja);box-shadow:0 1px .5px #0002;position:relative;align-self:flex-start;word-wrap:break-word;overflow-wrap:anywhere;user-select:text}
.msg.yo{align-self:flex-end;background:var(--burbuja-yo)}
.msg.primero{margin-top:8px}
.msg.primero:not(.yo){border-top-left-radius:0}.msg.primero.yo{border-top-right-radius:0}
.msg .autor{font-size:13px;font-weight:600;color:hsl(var(--h),55%,45%);margin-bottom:2px}
.msg .texto{white-space:pre-wrap;line-height:1.35}
.msg .texto a{color:#027eb5}
.msg .meta{float:right;font-size:11px;color:var(--sub);margin:6px 0 -4px 10px;display:flex;align-items:center;gap:3px;white-space:nowrap}
.msg.solo-media .meta{position:absolute;right:10px;bottom:8px;color:#fff;text-shadow:0 0 3px #000;margin:0}
.tick{font-size:13px;letter-spacing:-4px;margin-right:3px}.tick.leido{color:var(--azul-tick)}.tick.pend{letter-spacing:0;font-size:11px}
.msg .borrado{font-style:italic;color:var(--sub)}
.msg img.media,.msg video.media{display:block;max-width:100%;width:330px;max-height:360px;object-fit:cover;border-radius:6px;cursor:pointer;background:#0002}
.msg .cita{margin-bottom:4px}
.cita{background:#0000000d;border-left:4px solid var(--verde);border-radius:6px;padding:5px 8px;font-size:13px;cursor:pointer;min-width:0}
.cita b{display:block;color:var(--verde);font-size:12.5px}.cita span{color:var(--sub);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.msg.sistema{align-self:center;background:var(--sistema);color:var(--sub);font-size:12.5px;text-align:center;max-width:85%;margin:6px 0}
.msg.llamada .texto{display:flex;align-items:center;gap:8px}
.archivo{display:flex;gap:10px;align-items:center;background:#0000000d;padding:10px;border-radius:6px;min-width:220px;color:inherit;text-decoration:none}
.archivo .ext{width:36px;height:42px;background:var(--verde);color:#fff;border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;text-transform:uppercase}
.archivo .nom{flex:1;min-width:0}.archivo .nom b{display:block;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:14px}.archivo small{color:var(--sub)}
.audio{display:flex;align-items:center;gap:8px;min-width:240px;padding:2px 0}
.audio .play{width:36px;height:36px;border-radius:50%;background:var(--verde);color:#fff;font-size:15px}
.audio .barra-audio{flex:1;height:4px;background:#0002;border-radius:2px;position:relative;cursor:pointer}
.audio .barra-audio i{position:absolute;left:0;top:0;bottom:0;background:var(--verde);border-radius:2px;width:0}
.audio small{font-size:12px;color:var(--sub);min-width:34px}
.msg.resaltar{animation:resaltar 1.4s}
@keyframes resaltar{0%,60%{box-shadow:0 0 0 3px var(--verde)}}
.btn-bajar{position:absolute;right:20px;bottom:80px;width:42px;height:42px;border-radius:50%;background:var(--lado);box-shadow:0 2px 6px #0003;font-size:22px;color:var(--sub)}
.btn-bajar span{position:absolute;top:-6px;right:-4px;background:var(--verde);color:#fff;font-size:11px;border-radius:10px;padding:1px 6px}
.btn-bajar span:empty{display:none}

/* ---------- Redactor ---------- */
.redactor{background:var(--barra);padding:6px 10px;padding-bottom:max(6px,env(safe-area-inset-bottom));position:relative}
.fila{display:flex;align-items:flex-end;gap:6px}
#texto{flex:1;resize:none;border:0;outline:none;border-radius:20px;padding:11px 16px;background:var(--input);max-height:140px;line-height:1.3}
.redondo{width:46px;height:46px;border-radius:50%;background:var(--verde);color:#fff;font-size:19px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center}
.redondo.grabando-activo{background:var(--rojo);transform:scale(1.1)}
.grabando{align-items:center;padding:0 4px}
.punto-rec{width:10px;height:10px;border-radius:50%;background:var(--rojo);animation:latido 1s infinite}
@keyframes latido{50%{opacity:.2}}
#tiempo-grabacion{font-variant-numeric:tabular-nums;min-width:40px}
.respondiendo{display:flex;gap:8px;align-items:center;padding:4px 4px 8px}.respondiendo .cita{flex:1}
.aviso-solo{text-align:center;color:var(--sub);padding:12px;font-size:14px}
.menu-adjuntar{position:absolute;bottom:64px;left:10px;background:var(--lado);border-radius:14px;box-shadow:0 4px 20px #0003;padding:8px;display:flex;flex-direction:column;z-index:5}
.menu-adjuntar button{display:flex;gap:12px;align-items:center;padding:10px 16px;border-radius:8px;font-size:22px;text-align:left}
.menu-adjuntar button span{font-size:15px}.menu-adjuntar button:hover{background:var(--hover)}

/* ---------- Modal ---------- */
.modal{position:fixed;inset:0;background:#0006;z-index:50;display:flex;justify-content:flex-start}
.modal-caja{width:400px;max-width:100%;height:100%;background:var(--lado);display:flex;flex-direction:column;animation:entrar .2s}
@keyframes entrar{from{transform:translateX(-30px);opacity:0}}
.modal-caja .barra{background:var(--verde);color:#fff}.modal-caja .barra .icono{color:#fff}
.modal-cuerpo{flex:1;overflow-y:auto}
.seccion{padding:14px 18px;border-bottom:8px solid var(--barra)}
.seccion h4{margin:0 0 10px;color:var(--verde);font-weight:500;font-size:14px}
.campo{display:block;margin-bottom:14px}.campo span{display:block;font-size:13px;color:var(--verde);margin-bottom:4px}
.campo input,.campo textarea{width:100%;border:0;border-bottom:2px solid var(--borde);background:transparent;padding:8px 0;outline:none}
.campo input:focus{border-color:var(--verde)}
.fila-opcion{display:flex;gap:12px;align-items:center;padding:12px 18px;cursor:pointer}
.fila-opcion:hover{background:var(--hover)}.fila-opcion .tx{flex:1;min-width:0}
.fila-opcion .tx b{display:block;font-weight:400;font-size:16px}.fila-opcion .tx small{color:var(--sub);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fila-opcion .accion-icono{width:49px;height:49px;border-radius:50%;background:var(--verde);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px}
.fila-opcion.peligro{color:var(--rojo)}
.fila-opcion input[type=checkbox]{width:20px;height:20px;accent-color:var(--verde)}
.chip-rol{font-size:11px;color:var(--verde);border:1px solid var(--verde);border-radius:4px;padding:1px 5px}
.perfil-cab{text-align:center;padding:24px 18px}.perfil-cab .av{margin:0 auto 12px;cursor:pointer}
.perfil-cab h2{margin:0;font-weight:400}.perfil-cab p{color:var(--sub);margin:4px 0}
.botones-perfil{display:flex;justify-content:center;gap:20px;margin-top:14px}
.botones-perfil button{display:flex;flex-direction:column;align-items:center;gap:4px;color:var(--verde);font-size:22px}
.botones-perfil button span{font-size:13px}
.boton-flotante{position:sticky;bottom:20px;margin:16px 20px 20px auto;display:flex;width:56px;height:56px;border-radius:50%;background:var(--verde);color:#fff;font-size:24px;align-items:center;justify-content:center;box-shadow:0 3px 10px #0004}
.btn-bloque{display:block;width:calc(100% - 36px);margin:14px 18px}

/* ---------- Visor / menú / toast ---------- */
.visor{position:fixed;inset:0;background:#000e;z-index:60;display:flex;align-items:center;justify-content:center}
.visor .icono{position:absolute;top:14px;color:#fff;z-index:2;text-decoration:none}
#visor-cerrar{right:14px}#visor-descargar{right:64px}
#visor-contenido img,#visor-contenido video{max-width:96vw;max-height:90vh}
.menu-ctx{position:fixed;background:var(--lado);border-radius:10px;box-shadow:0 4px 20px #0004;padding:6px 0;z-index:70;min-width:170px}
.menu-ctx button{display:block;width:100%;text-align:left;padding:10px 18px}
.menu-ctx button:hover{background:var(--hover)}.menu-ctx button.peligro{color:var(--rojo)}
.toast{position:fixed;bottom:90px;left:50%;transform:translateX(-50%);background:#323739;color:#fff;padding:10px 18px;border-radius:8px;z-index:80;font-size:14px;max-width:90vw}

/* ---------- Llamada ---------- */
.llamada{position:fixed;inset:0;z-index:90;background:linear-gradient(160deg,#075e54,#0b141a);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:60px 20px max(40px,env(safe-area-inset-bottom))}
#video-remoto{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;background:#000;display:none}
#video-local{position:absolute;right:16px;top:max(16px,env(safe-area-inset-top));width:110px;height:160px;object-fit:cover;border-radius:12px;border:2px solid #fff4;display:none;z-index:2;transform:scaleX(-1)}
.llamada.con-video #video-remoto{display:block}.llamada.con-video-local #video-local{display:block}
.llamada.con-video .llamada-info{background:#0006;padding:8px 18px;border-radius:12px}
.llamada.con-video .llamada-info #llamada-avatar{display:none}
.llamada-info{text-align:center;z-index:1}.llamada-info .av{margin:0 auto 18px}
.llamada-info h2{margin:0;font-weight:400;font-size:26px}.llamada-info p{opacity:.8;margin:8px 0 0}
.llamada-botones{display:flex;gap:26px;z-index:1}
.redondo.grande{width:64px;height:64px;font-size:26px}
.redondo.rojo{background:var(--rojo)}.redondo.verde{background:#25d366}.redondo.gris{background:#ffffff2e}
.redondo.gris.apagado{background:#fff;color:#111}
#btn-rechazar,#btn-colgar{transform:rotate(135deg)}
.sonando .redondo.verde{animation:latido 1s infinite}

/* ---------- Móvil ---------- */
@media (max-width:780px){
  #lado{width:100%;border:0}
  #chat{display:none}
  body.en-chat #lado{display:none}
  body.en-chat #chat{display:flex}
  .atras{display:inline-flex}
  .mensajes{padding:10px 3%}
  .msg{max-width:85%}
  .chat-vacio{display:none!important}
  .modal-caja{width:100%}
}