/* Chat Privado — look WhatsApp (claro y oscuro) */
:root{
  --verde:#008069; --verde2:#00a884; --verde3:#25d366;
  --bg:#ffffff; --bg2:#f0f2f5; --chat-bg:#efeae2;
  --burb-in:#ffffff; --burb-out:#d9fdd3;
  --txt:#111b21; --txt2:#667781; --linea:#e9edef;
  --tick:#8696a0; --tick-azul:#53bdeb; --badge:#25d366;
  --panel:#ffffff; --sombra:0 1px 2px rgba(11,20,26,.13);
}
body.oscuro{
  --bg:#111b21; --bg2:#202c33; --chat-bg:#0b141a;
  --burb-in:#202c33; --burb-out:#005c4b;
  --txt:#e9edef; --txt2:#8696a0; --linea:#222d34;
  --panel:#111b21; --sombra:0 1px 2px rgba(0,0,0,.4);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%;overflow:hidden}
body{font-family:'Segoe UI',system-ui,-apple-system,Roboto,Helvetica,sans-serif;background:var(--bg);color:var(--txt);font-size:15px}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit}
.oculto{display:none!important}

/* ---------- pantallas ---------- */
.pantalla{position:fixed;inset:0;display:flex;flex-direction:column;background:var(--bg);transition:transform .22s ease}
.pantalla.fuera{transform:translateX(100%)}

/* ---------- alta ---------- */
#alta{align-items:center;justify-content:flex-start;padding:38px 26px;text-align:center;gap:14px}
#alta .logo{width:86px;height:86px;border-radius:50%;background:var(--verde);display:flex;align-items:center;justify-content:center;font-size:42px;margin-bottom:6px}
#alta h1{font-size:21px;color:var(--verde);font-weight:500}
#alta p{color:var(--txt2);font-size:14px;line-height:1.5;max-width:330px}
#alta .campo{display:flex;align-items:center;gap:8px;border-bottom:2px solid var(--verde2);padding:8px 2px;width:100%;max-width:300px}
#alta .campo .pais{color:var(--txt2)}
#alta input{flex:1;border:0;background:transparent;outline:none;font-size:18px;letter-spacing:.5px;text-align:center}
#alta .btn{background:var(--verde2);color:#fff;border:0;border-radius:24px;padding:13px 44px;font-size:15px;font-weight:600;cursor:pointer;margin-top:10px}
#alta .btn:disabled{opacity:.5}
#alta .aviso{color:#e53935;font-size:13px;min-height:18px}
#alta .link{color:var(--verde2);background:0;border:0;font-size:14px;cursor:pointer;text-decoration:underline}
.pin{display:flex;gap:9px;justify-content:center}
.pin input{width:38px;height:48px;border:0;border-bottom:2px solid var(--verde2);background:transparent;text-align:center;font-size:24px;outline:none}

/* ---------- barra superior ---------- */
.barra{background:var(--verde);color:#fff;display:flex;align-items:center;gap:14px;padding:0 14px;height:56px;flex:0 0 auto}
body.oscuro .barra{background:var(--bg2)}
.barra .titulo{font-size:19px;font-weight:600;flex:1}
.barra .ico{width:24px;height:24px;opacity:.95;cursor:pointer;flex:0 0 auto}
.barra .volver{font-size:24px;cursor:pointer;margin-right:-4px}

/* ---------- lista de chats ---------- */
.buscador{background:var(--bg);padding:7px 12px;flex:0 0 auto}
.buscador input{width:100%;background:var(--bg2);border:0;border-radius:8px;padding:9px 14px;outline:none}
.lista{flex:1;overflow-y:auto;background:var(--bg)}
.fila{display:flex;gap:13px;padding:11px 14px;cursor:pointer;align-items:center}
.fila:active{background:var(--bg2)}
.av{width:49px;height:49px;border-radius:50%;background:var(--verde2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:600;flex:0 0 auto;overflow:hidden}
.av img{width:100%;height:100%;object-fit:cover}
.fila .medio{flex:1;min-width:0;border-bottom:1px solid var(--linea);padding-bottom:11px;margin-top:11px;margin-top:0}
.fila .arriba{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.fila .nom{font-size:16.5px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fila .hora{font-size:12px;color:var(--txt2);flex:0 0 auto}
.fila .abajo{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:3px}
.fila .prev{font-size:14px;color:var(--txt2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;display:flex;align-items:center;gap:3px}
.fila .badge{background:var(--badge);color:#fff;border-radius:11px;min-width:20px;height:20px;padding:0 6px;font-size:12px;font-weight:600;display:flex;align-items:center;justify-content:center}
.vacio{text-align:center;color:var(--txt2);padding:48px 24px;font-size:14px;line-height:1.6}

/* ---------- conversación ---------- */
#chat{background:var(--chat-bg)}
#chat .barra{gap:10px;padding-left:8px}
#chat .barra .av{width:39px;height:39px;font-size:17px}
#chat .info{flex:1;min-width:0;line-height:1.25;cursor:pointer}
#chat .info b{font-size:16.5px;font-weight:500;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#chat .info small{font-size:12.5px;opacity:.85}
.mensajes{flex:1;overflow-y:auto;padding:12px 5.5% 8px;display:flex;flex-direction:column;gap:2px;
  background-image:url("/app/fondo.png");background-size:412px;background-repeat:repeat}
body.oscuro .mensajes{background-blend-mode:overlay;background-color:var(--chat-bg)}
.dia{align-self:center;background:var(--bg2);color:var(--txt2);font-size:12.5px;padding:5px 12px;border-radius:8px;margin:10px 0;box-shadow:var(--sombra)}
.burb{max-width:78%;padding:6px 9px 8px;border-radius:8px;box-shadow:var(--sombra);position:relative;font-size:14.6px;line-height:1.35;word-wrap:break-word;margin-bottom:2px}
.burb.mia{align-self:flex-end;background:var(--burb-out);border-top-right-radius:0}
.burb.suya{align-self:flex-start;background:var(--burb-in);border-top-left-radius:0}
.burb.mia+.burb.mia,.burb.suya+.burb.suya{border-radius:8px}
.burb .txt{white-space:pre-wrap}
.burb .meta{float:right;display:flex;align-items:center;gap:3px;margin:6px -2px -4px 8px;font-size:11px;color:var(--txt2);white-space:nowrap}
.burb .tick{font-size:13px;letter-spacing:-3px;padding-right:3px}
.burb .tick.leido{color:var(--tick-azul)}
.burb .cita{border-left:3px solid var(--verde2);background:rgba(0,0,0,.05);border-radius:4px;padding:4px 8px;margin-bottom:4px;font-size:13.5px;color:var(--txt2);cursor:pointer}
body.oscuro .burb .cita{background:rgba(255,255,255,.07)}
.burb .cita b{display:block;color:var(--verde2);font-size:13px}
.burb img.foto{max-width:100%;border-radius:6px;display:block;cursor:pointer}
.burb audio{max-width:220px;height:38px;display:block}
.burb .doc{display:flex;align-items:center;gap:9px;background:rgba(0,0,0,.05);border-radius:6px;padding:9px;text-decoration:none;color:inherit}
.burb .sistema{align-self:center}
.sistema{align-self:center;background:#ffeecd;color:#5b4a2b;font-size:12.5px;padding:6px 12px;border-radius:8px;margin:8px 0;text-align:center;max-width:85%}
body.oscuro .sistema{background:#182229;color:#ffd279}
.escribiendo{align-self:flex-start;background:var(--burb-in);border-radius:8px;border-top-left-radius:0;padding:10px 14px;box-shadow:var(--sombra);display:flex;gap:4px}
.escribiendo i{width:7px;height:7px;border-radius:50%;background:var(--txt2);animation:pulso 1.2s infinite}
.escribiendo i:nth-child(2){animation-delay:.2s}.escribiendo i:nth-child(3){animation-delay:.4s}
@keyframes pulso{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}

/* ---------- barra de escribir ---------- */
.escribir{flex:0 0 auto;padding:6px 8px 8px;display:flex;align-items:flex-end;gap:6px;background:var(--chat-bg)}
.caja{flex:1;background:var(--panel);border-radius:24px;display:flex;align-items:flex-end;padding:6px 8px 6px 12px;gap:8px;box-shadow:var(--sombra)}
.caja textarea{flex:1;border:0;outline:none;background:transparent;resize:none;max-height:100px;padding:6px 0;line-height:1.35}
.caja .ico{opacity:.6;cursor:pointer;padding:5px;font-size:20px}
.mandar{width:47px;height:47px;border-radius:50%;background:var(--verde2);color:#fff;border:0;display:flex;align-items:center;justify-content:center;font-size:21px;cursor:pointer;flex:0 0 auto}
.mandar.grabando{background:#e53935;animation:lat 1s infinite}
@keyframes lat{50%{transform:scale(1.09)}}
.respondiendo{background:var(--panel);border-left:4px solid var(--verde2);border-radius:8px;margin:0 8px;padding:6px 10px;display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--txt2)}
.respondiendo b{color:var(--verde2);display:block;font-size:13px}
.respondiendo .x{margin-left:auto;cursor:pointer;font-size:18px;padding:0 4px}
.grabador{flex:1;display:flex;align-items:center;gap:10px;background:var(--panel);border-radius:24px;padding:12px 16px;box-shadow:var(--sombra);color:#e53935;font-weight:500}
.grabador .pt{width:10px;height:10px;border-radius:50%;background:#e53935;animation:lat 1s infinite}
.grabador .cancel{margin-left:auto;color:var(--txt2);cursor:pointer}

/* ---------- menús / hojas ---------- */
.velo{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:50;display:flex;align-items:flex-end}
.hoja{background:var(--panel);width:100%;border-radius:16px 16px 0 0;padding:10px 0 22px;animation:sube .2s ease}
@keyframes sube{from{transform:translateY(100%)}}
.hoja h4{padding:10px 20px;color:var(--txt2);font-size:13px;font-weight:500}
.hoja .op{padding:14px 22px;display:flex;align-items:center;gap:16px;cursor:pointer;font-size:15.5px}
.hoja .op:active{background:var(--bg2)}
.menu{position:absolute;top:52px;right:10px;background:var(--panel);border-radius:6px;box-shadow:0 2px 10px rgba(0,0,0,.3);z-index:60;overflow:hidden;min-width:180px}
.menu .op{padding:13px 20px;cursor:pointer;font-size:15px}
.menu .op:active{background:var(--bg2)}
.visor{position:fixed;inset:0;background:#000;z-index:70;display:flex;align-items:center;justify-content:center}
.visor img{max-width:100%;max-height:100%}
.visor .x{position:absolute;top:14px;left:16px;color:#fff;font-size:28px;cursor:pointer}
.perfil{padding:24px;display:flex;flex-direction:column;gap:18px;overflow-y:auto}
.perfil .av{width:110px;height:110px;font-size:42px;align-self:center}
.perfil label{color:var(--verde2);font-size:13px;display:block;margin-bottom:4px}
.perfil .item{background:var(--panel);border-radius:8px;padding:12px 14px;box-shadow:var(--sombra)}
.perfil input{width:100%;border:0;border-bottom:1px solid var(--linea);background:transparent;outline:none;padding:4px 0;font-size:15.5px}
.toast{position:fixed;bottom:80px;left:50%;transform:translateX(-50%);background:#323232;color:#fff;padding:11px 20px;border-radius:24px;font-size:14px;z-index:90;box-shadow:0 3px 12px rgba(0,0,0,.35)}

/* ---------- invitación a instalar ---------- */
.invitacion{position:fixed;left:10px;right:10px;bottom:76px;z-index:80;background:var(--panel);
  border-radius:14px;box-shadow:0 6px 24px rgba(0,0,0,.25);padding:14px 16px;display:flex;
  flex-wrap:wrap;align-items:center;gap:10px;animation:sube .25s ease}
.invitacion .txt{flex:1 1 100%;line-height:1.35}
.invitacion .txt b{display:block;font-size:15.5px}
.invitacion .txt span{color:var(--txt2);font-size:13.5px}
.invitacion .si{flex:1;background:var(--verde2);color:#fff;border:0;border-radius:22px;padding:11px;font-size:15px;font-weight:600;cursor:pointer}
.invitacion .no{background:none;border:0;color:var(--txt2);padding:11px 14px;font-size:14px;cursor:pointer}