:root{
  --bg:#0a0e1a; --bg2:#0e1121; --card:#111827; --card2:#161f33;
  --accent:#6366f1; --accent-soft:#6366f133; --text:#f1f5f9; --muted:#94a3b8;
  --border:#1e293b; --danger:#ef4444; --radius:16px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);
  -webkit-font-smoothing:antialiased;overscroll-behavior:none;
}
.hidden{display:none!important}
button{font-family:inherit;cursor:pointer;border:none;color:inherit}
.error{color:var(--danger);font-size:.85rem;min-height:1.1em;text-align:center}

/* LOGIN */
.login-screen{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:24px;
  background:radial-gradient(1200px 600px at 50% -10%,#1e1b4b55,transparent),var(--bg);}
.login-card{background:var(--card);border:1px solid var(--border);border-radius:24px;padding:40px 32px;
  width:100%;max-width:380px;text-align:center;box-shadow:0 24px 60px #00000066;}
.brand .logo{width:64px;height:64px;border-radius:18px;background:linear-gradient(135deg,#6366f1,#8b5cf6);
  display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:700;margin:0 auto 16px;color:#fff}
.brand h1{font-size:1.6rem;font-weight:700;margin-bottom:4px}
.brand h1 span{color:var(--accent)}
.brand p{color:var(--muted);font-size:.9rem;margin-bottom:28px}
#g-signin{display:flex;justify-content:center;margin-bottom:12px}
.hint{color:var(--muted);font-size:.78rem;margin-top:18px;line-height:1.5}

/* APP layout */
.app{display:flex;flex-direction:column;height:100dvh}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;
  padding-top:max(12px,env(safe-area-inset-top));background:var(--bg2);border-bottom:1px solid var(--border)}
.topbar-brand{display:flex;align-items:center;gap:10px;font-size:1.1rem}
.logo.sm{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,#6366f1,#8b5cf6);
  display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff}
.topbar-user{display:flex;align-items:center;gap:10px}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--card2);object-fit:cover}
.icon-btn{background:var(--card2);border:1px solid var(--border);width:38px;height:38px;border-radius:10px;font-size:1.1rem}
.icon-btn:hover{border-color:var(--accent)}

.content{flex:1;overflow-y:auto;position:relative}
.tab{display:none;height:100%;flex-direction:column}
.tab.active{display:flex}
.section-head{display:flex;align-items:center;justify-content:space-between;padding:18px 16px 8px}
.section-head h2{font-size:1.3rem}
.btn-primary{background:var(--accent);color:#fff;padding:9px 16px;border-radius:10px;font-weight:600;font-size:.9rem}
.btn-primary:hover{background:#4f46e5}
.cards{padding:8px 16px 100px;display:flex;flex-direction:column;gap:12px}

/* CHAT */
.chat-list{flex:1;overflow-y:auto;padding:16px 14px 12px;display:flex;flex-direction:column;gap:10px}
.bubble{max-width:80%;padding:9px 13px;border-radius:14px;background:var(--card);border:1px solid var(--border);
  font-size:.95rem;line-height:1.4;word-break:break-word}
.bubble .meta{font-size:.72rem;color:var(--muted);margin-bottom:3px}
.bubble.mine{align-self:flex-end;background:var(--accent);border-color:var(--accent)}
.bubble.mine .meta{color:#e0e7ff}
.bubble img{max-width:100%;border-radius:10px;margin-top:6px;display:block}
.bubble a{color:var(--accent)}
.bubble.mine a{color:#fff;text-decoration:underline}
.chat-form{display:flex;gap:8px;padding:10px 12px;padding-bottom:max(10px,env(safe-area-inset-bottom));
  background:var(--bg2);border-top:1px solid var(--border)}
.chat-form input[type=text]{flex:1;background:var(--card);border:1px solid var(--border);border-radius:22px;
  padding:11px 16px;color:var(--text);font-size:.95rem;outline:none}
.chat-form input[type=text]:focus{border-color:var(--accent)}
.attach-btn{display:flex;align-items:center;justify-content:center;width:44px;background:var(--card);
  border:1px solid var(--border);border-radius:50%;font-size:1.2rem}
.send-btn{width:44px;background:var(--accent);border-radius:50%;font-size:1.1rem;color:#fff}

/* CARDS (posts/polls) */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.card h3{font-size:1.05rem;margin-bottom:6px}
.card .meta{color:var(--muted);font-size:.78rem;margin-bottom:10px}
.card p{color:#cbd5e1;font-size:.92rem;line-height:1.5;white-space:pre-wrap}
.card .attachments{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.card .attachments img{width:80px;height:80px;object-fit:cover;border-radius:10px}
.card .attachments a{font-size:.8rem;color:var(--accent);background:var(--card2);padding:6px 10px;border-radius:8px}

/* POLLS */
.poll-opt{display:block;width:100%;text-align:left;background:var(--card2);border:1px solid var(--border);
  border-radius:10px;padding:11px 14px;margin-top:8px;position:relative;overflow:hidden;font-size:.92rem}
.poll-opt .bar{position:absolute;inset:0;background:var(--accent-soft);width:0;transition:width .4s}
.poll-opt .lbl{position:relative;display:flex;justify-content:space-between}
.poll-opt.voted{border-color:var(--accent)}
.poll-opt:hover{border-color:var(--accent)}

/* MODAL */
.modal{position:fixed;inset:0;background:#000a;display:flex;align-items:flex-end;justify-content:center;z-index:50}
.modal-card{background:var(--card);border:1px solid var(--border);border-radius:20px 20px 0 0;padding:22px 18px;
  width:100%;max-width:520px;max-height:88dvh;overflow-y:auto;padding-bottom:max(22px,env(safe-area-inset-bottom))}
.modal-card h3{margin-bottom:14px;font-size:1.2rem}
.modal-card input,.modal-card textarea{width:100%;background:var(--bg2);border:1px solid var(--border);border-radius:10px;
  padding:11px 13px;color:var(--text);font-size:.95rem;margin-bottom:10px;outline:none;font-family:inherit}
.modal-card input:focus,.modal-card textarea:focus{border-color:var(--accent)}
.modal-card textarea{min-height:90px;resize:vertical}
.modal-actions{display:flex;gap:10px;margin-top:8px}
.modal-actions button{flex:1;padding:12px;border-radius:10px;font-weight:600}
.btn-cancel{background:var(--card2);border:1px solid var(--border)}
.opt-row{display:flex;gap:8px;align-items:center}
.opt-row input{flex:1}
.opt-row .rm{width:38px;flex:none;background:var(--card2);border:1px solid var(--border);border-radius:8px;margin-bottom:10px}
.add-opt{background:var(--card2);border:1px dashed var(--border);width:100%;padding:9px;border-radius:8px;color:var(--muted);margin-bottom:10px}

/* TABBAR */
.tabbar{display:flex;background:var(--bg2);border-top:1px solid var(--border);
  padding-bottom:env(safe-area-inset-bottom)}
.tabbar button{flex:1;background:none;padding:9px 0 7px;font-size:1.3rem;color:var(--muted);
  display:flex;flex-direction:column;align-items:center;gap:2px}
.tabbar button span{font-size:.68rem;font-weight:500}
.tabbar button.active{color:var(--accent)}
.empty{color:var(--muted);text-align:center;padding:40px 20px;font-size:.9rem}