:root{
  --bg:#343541; --panel:#202123; --mid:#444654; --line:rgba(255,255,255,.08);
  --pill:#2a2b32; --accent:#19c37d; --danger:#ff4d4f; --text:#fff; --muted:#cfd3da;
}

*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,Arial;background:var(--bg);color:var(--text);}

.layout{display:flex;height:100vh;}

/* LEFT */
.sidebar-left{width:280px;background:var(--panel);display:flex;flex-direction:column;border-right:1px solid var(--line);}
.sidebar-left-top{padding:12px;display:flex;flex-direction:column;gap:10px;}
.chat-list{padding:10px;overflow:auto;flex:1}

.btn{background:#3b3c45;border:none;color:#fff;padding:10px;border-radius:10px;cursor:pointer;}
.btn:hover{filter:brightness(1.05)}
.btn-small{background:#3b3c45;border:none;color:#fff;padding:8px 10px;border-radius:10px;cursor:pointer;}
.logout{color:#aaa;text-decoration:none;font-size:12px}

.input{width:100%;background:var(--pill);border:none;color:#fff;padding:10px;border-radius:10px;outline:none;}
.textarea{width:100%;background:var(--pill);border:none;color:#fff;padding:10px;border-radius:10px;outline:none;min-height:120px;resize:vertical;}

.chat-item{padding:10px;border-radius:12px;margin-bottom:8px;cursor:pointer;background:transparent;}
.chat-item:hover{background:rgba(255,255,255,.05)}
.chat-item.active{background:var(--pill);outline:1px solid rgba(255,255,255,.08);}
.chat-item.unread{outline:1px solid rgba(255,77,79,.35);}

.chat-title-row{display:flex;justify-content:space-between;gap:10px;align-items:center;}
.chat-title{font-size:13px;line-height:1.2;}
.chat-sub{font-size:12px;color:var(--muted);opacity:.9;margin-top:6px;}
.chat-meta{margin-top:8px;display:flex;gap:6px;align-items:center;flex-wrap:wrap;}
.badge{background:var(--danger);color:#fff;border-radius:999px;padding:2px 8px;font-size:12px;}
.tag{background:rgba(0,0,0,.18);color:var(--muted);border-radius:8px;padding:2px 8px;font-size:11px;}

/* CENTER */
.chat-center{flex:1;display:flex;flex-direction:column;background:var(--mid);}
.chat-topbar{display:flex;gap:10px;align-items:center;padding:12px 14px;border-bottom:1px solid var(--line);background:#3f4150;}
.chat-title-input{flex:1;background:transparent;border:none;color:#fff;font-size:14px;outline:none;padding:8px 10px;border-radius:10px;}
.chat-title-input:focus{background:rgba(0,0,0,.18);}

.messages{flex:1;overflow:auto;padding:18px;}
.msg{max-width:72%;padding:10px 12px;border-radius:14px;margin-bottom:12px;word-wrap:break-word;}
.msg-author{font-size:11px;opacity:.85;margin-bottom:6px;}
.msg-me{background:var(--accent);color:#06110c;margin-left:auto;}
.msg-other{background:#555;}
.msg-code{background:rgba(0,0,0,.18);padding:10px;border-radius:12px;overflow:auto;}
.msg-rich a{color:#b7ffd9}
.msg-file{color:#b7ffd9;text-decoration:none}

.composer{padding:12px;border-top:1px solid var(--line);background:#40414f;}
.composer-toolbar{display:flex;gap:8px;align-items:center;margin-bottom:10px;flex-wrap:wrap;}
.tool,.file-btn{background:var(--pill);color:#fff;border:none;padding:8px 10px;border-radius:10px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;}
.composer-box{background:var(--pill);border-radius:14px;padding:12px;min-height:90px;outline:none;}
.composer-box:empty:before{content:attr(data-placeholder);color:rgba(255,255,255,.35);}
.send-btn{margin-top:10px;width:100%;background:var(--accent);border:none;padding:12px;border-radius:12px;cursor:pointer;color:#06110c;font-weight:600;}

/* RIGHT */
.sidebar-right{width:300px;background:var(--panel);border-left:1px solid var(--line);padding:12px;overflow:auto;}
.sidebar-right h3{margin:10px 0 8px;font-size:13px;color:var(--muted);font-weight:600;}
.tasks-add{display:flex;gap:8px;margin-bottom:10px;}
.task-list{display:flex;flex-direction:column;gap:8px;}
.task-row{padding:10px;border-radius:12px;background:rgba(255,255,255,.04);}
.task-label{display:flex;gap:10px;align-items:flex-start;}
.task-done{text-decoration:line-through;opacity:.7}

/* LOGIN */
.login-body{display:flex;justify-content:center;align-items:center;height:100vh;background:var(--panel);}
.login-box{background:var(--pill);padding:26px;border-radius:16px;width:320px;display:flex;flex-direction:column;gap:12px;}
.login-box h2{margin:0 0 6px 0}
.login-box button{background:var(--accent);border:none;padding:12px;border-radius:12px;cursor:pointer;color:#06110c;font-weight:700;}
.alert{background:rgba(255,77,79,.15);border:1px solid rgba(255,77,79,.3);padding:10px;border-radius:12px;color:#ffd2d2;font-size:13px}

/* Responsive */
@media (max-width: 980px){
  .sidebar-right{display:none;}
}
@media (max-width: 768px){
  .sidebar-left{display:none;}
  .msg{max-width:88%;}
}
/* Prioridades (sidebar) */
.prio-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:2px 8px;
  border-radius:999px;
  font-size:11px;
  font-weight:600;
  color:#fff;
}

.prio-urgente{ background:#ff4d4f; }       /* rojo */
.prio-en-espera{ background:#f1c40f; color:#1a1a1a; } /* amarillo */
.prio-en-progreso{ background:#2ecc71; color:#0b1a10; } /* verde */
.prio-normal{ background:#3498db; }        /* azul */
.prio-baja{ background:#8ecbff; color:#0b1a10; } /* azul claro */