:root{--bg:#0f1115;--card:#171a21;--card-2:#1e2229;--border:#262b34;--text:#e8eaed;--muted:#8b95a5;--accent:#4f8cff;--accent-2:#7c5cff}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit;text-decoration:none}
.muted{color:var(--muted);font-size:13px}
.loading,.empty{text-align:center;padding:40px 20px;color:var(--muted);font-size:14px}

/* topbar */
.topbar{position:sticky;top:0;background:rgba(15,17,21,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);z-index:50}
.topbar-inner{max-width:1100px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;gap:12px;overflow-x:auto}
.brand{font-weight:700;font-size:19px;background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent;flex-shrink:0}
.nav{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav a{padding:8px 12px;border-radius:10px;color:var(--muted);font-size:14px;position:relative;white-space:nowrap}
.nav a:hover,.nav a.active{background:var(--card);color:var(--text)}
#unreadDot{position:absolute;top:6px;right:6px;width:8px;height:8px;background:#ff3b30;border-radius:50%}
.avatar-btn img{width:32px;height:32px;border-radius:50%;object-fit:cover}
.search input{background:var(--card);border:1px solid var(--border);color:var(--text);padding:8px 12px;border-radius:10px;outline:none;font-size:14px;width:160px}

/* container */
.container{max-width:680px;margin:0 auto;padding:16px 12px 80px;display:flex;flex-direction:column;gap:14px}

/* composer */
.composer{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:10px}
.composer textarea{background:transparent;border:0;color:var(--text);font-size:15px;resize:none;font-family:inherit;outline:none;min-height:60px}
.composer .row{display:flex;justify-content:flex-end}
.composer button{background:var(--accent);color:#fff;border:0;padding:8px 20px;border-radius:10px;cursor:pointer;font-weight:600}

/* post */
.post{background:var(--card);border:1px solid var(--border);border-radius:14px;overflow:hidden}
.post-head{display:flex;gap:12px;padding:14px 14px 8px;align-items:center}
.post-head img.avatar{width:42px;height:42px;border-radius:50%;object-fit:cover}
.who{display:flex;flex-direction:column;line-height:1.3}
.who b{font-size:15px}
.who span{color:var(--muted);font-size:12.5px}
.post-body{padding:4px 16px 12px;white-space:pre-wrap;word-break:break-word;font-size:15px;line-height:1.5}
.post-photos{display:grid;gap:2px}
.post-photos.one img{width:100%;max-height:520px;object-fit:cover;display:block}
.post-photos.two{grid-template-columns:1fr 1fr}
.post-photos.many{grid-template-columns:1fr 1fr}
.post-photos img{width:100%;height:220px;object-fit:cover;display:block}
.post-stats{display:flex;justify-content:space-between;padding:8px 16px;color:var(--muted);font-size:13px;border-bottom:1px solid var(--border)}
.post-actions{display:flex;padding:4px;gap:2px}
.post-actions button{flex:1;background:transparent;border:0;color:var(--muted);padding:10px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:500}
.post-actions button:hover{background:var(--card-2);color:var(--text)}
.post-actions button.reacted{color:var(--accent);font-weight:600}

/* comments */
.comments{padding:12px 16px;display:flex;flex-direction:column;gap:10px;background:var(--card-2)}
.comment{display:flex;gap:10px}
.comment img{width:32px;height:32px;border-radius:50%;object-fit:cover;flex-shrink:0}
.comment-body{background:var(--card);border-radius:10px;padding:8px 12px;flex:1}
.comment-body b{font-size:13.5px}
.comment-body p{margin:2px 0 0;font-size:14px;white-space:pre-wrap;word-break:break-word}
.comment-form{display:flex;gap:8px;padding:10px 16px;background:var(--card-2);border-top:1px solid var(--border)}
.comment-form input{flex:1;padding:9px 12px;background:var(--card);border:1px solid var(--border);border-radius:20px;color:var(--text);font-size:14px;outline:none}
.comment-form input:focus{border-color:var(--accent)}
.comment-form button{background:transparent;border:0;color:var(--accent);cursor:pointer;font-weight:600;padding:6px 10px}

/* profile */
.profile-head{background:var(--card);border:1px solid var(--border);border-radius:14px;overflow:hidden}
.profile-cover{width:100%;height:160px;background:linear-gradient(135deg,var(--accent),var(--accent-2));background-size:cover;background-position:center}
.profile-info{padding:16px;display:flex;gap:16px;align-items:center}
.profile-info img{width:80px;height:80px;border-radius:50%;object-fit:cover;margin-top:-50px;border:4px solid var(--card);background:var(--card)}
.profile-info h2{margin:0;font-size:20px}
.profile-info p{margin:4px 0 0;color:var(--muted);font-size:14px}
.profile-head .row{display:flex;gap:8px;padding:0 16px 12px}
.profile-head .row button{background:var(--accent);color:#fff;border:0;padding:8px 16px;border-radius:10px;cursor:pointer;font-weight:600}
.stats{display:flex;gap:24px;padding:0 16px 16px;color:var(--muted);font-size:14px}
.stats b{color:var(--text);font-size:15px}

/* chat */
.conv{display:flex;gap:12px;align-items:center;padding:14px;cursor:pointer}
.conv img{width:48px;height:48px;border-radius:50%;object-fit:cover}
.conv div{flex:1;display:flex;flex-direction:column}
.conv small{color:var(--muted);font-size:12px}
.conv span{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:300px}
.chat-thread{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:10px;max-height:60vh;overflow-y:auto}
.msg{display:flex;gap:8px;align-items:flex-end}
.msg img{width:28px;height:28px;border-radius:50%;object-fit:cover;flex-shrink:0}
.msg>div{background:var(--card-2);padding:8px 12px;border-radius:12px;max-width:75%;font-size:14px;line-height:1.4}
.msg small{display:block;font-size:10px;color:var(--muted);margin-top:2px}
.msg.mine{flex-direction:row-reverse}
.msg.mine>div{background:var(--accent);color:#fff}
.msg.mine small{color:rgba(255,255,255,.7)}

/* notifications */
.notif{display:flex;gap:12px;padding:14px;align-items:center}
.notif img{width:40px;height:40px;border-radius:50%;object-fit:cover}
.notif div{flex:1}
.notif small{display:block;color:var(--muted);font-size:12px;margin-top:2px}

/* card rows (pages/groups/events/market) */
.card-row{display:flex;gap:12px;padding:14px;align-items:center}
.card-row img{width:48px;height:48px;border-radius:50%;object-fit:cover}
.card-row div{flex:1;display:flex;flex-direction:column}
.card-row small{color:var(--muted);font-size:12.5px}
.card-row button{background:var(--accent);color:#fff;border:0;padding:8px 16px;border-radius:10px;cursor:pointer;font-weight:600}
h2{margin:8px 0 0;font-size:18px}

/* login */
.login-card{max-width:360px;margin:80px auto;background:var(--card);padding:32px;border-radius:16px;border:1px solid var(--border);display:flex;flex-direction:column;gap:12px}
.login-card h1{margin:0 0 8px;font-size:22px;text-align:center;background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.login-card input{padding:12px 14px;background:var(--card-2);border:1px solid var(--border);border-radius:10px;color:var(--text);font-size:15px;outline:none}
.login-card input:focus{border-color:var(--accent)}
.login-card button{padding:12px;border:0;border-radius:10px;background:var(--accent);color:#fff;font-weight:600;cursor:pointer;font-size:15px}

/* toast */
#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(80px);background:rgba(0,0,0,.9);color:#fff;padding:12px 20px;border-radius:10px;font-size:14px;transition:transform .3s;z-index:1000;pointer-events:none}
#toast.show{transform:translateX(-50%) translateY(0)}

/* mobile */
@media (max-width:640px){
  .topbar-inner{padding:8px 10px}
  .brand{font-size:16px}
  .nav a{padding:6px 8px;font-size:13px}
  .search input{width:110px;padding:6px 10px;font-size:13px}
  .container{padding:10px 8px 60px}
  .profile-info img{width:64px;height:64px;margin-top:-40px}
  .profile-info h2{font-size:17px}
}