:root{
  --primary:#4f46e5;
  --primary-dark:#3730a3;
  --bg:#f3f4f6;
  --surface:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --line:#e5e7eb;
  --green:#16a34a;
  --red:#dc2626;
  --orange:#ea580c;
}
*{box-sizing:border-box;}
body{margin:0;font-family:-apple-system,'Inter',sans-serif;background:var(--bg);color:var(--text);}
.brand{font-weight:800;font-size:22px;}
.brand span{color:var(--primary);}
.brand.small{font-size:17px;display:flex;align-items:center;gap:10px;}

/* ---- Auth pages ---- */
.auth-body{display:flex;align-items:center;justify-content:center;min-height:100vh;}
.auth-card{background:var(--surface);padding:44px;border-radius:12px;box-shadow:0 10px 40px rgba(0,0,0,.08);width:360px;}
.auth-card .tagline{color:var(--muted);margin:6px 0 26px;font-size:14px;}
.auth-card label{display:block;font-size:12px;font-weight:600;color:var(--muted);margin:14px 0 6px;}
.auth-card input{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:8px;font-size:14px;}
.auth-card .btn{width:100%;margin-top:22px;padding:12px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-weight:600;cursor:pointer;}
.auth-card .btn:hover{background:var(--primary-dark);}
.auth-card .switch{margin-top:18px;font-size:13px;color:var(--muted);text-align:center;}
.auth-card .switch a{color:var(--primary);font-weight:600;}
.alert{background:#fee2e2;color:#991b1b;padding:10px 12px;border-radius:8px;font-size:13px;margin-bottom:6px;}

/* ---- Topbar ---- */
.topbar{display:flex;align-items:center;justify-content:space-between;background:var(--surface);padding:14px 24px;border-bottom:1px solid var(--line);}
.topbar-right{display:flex;align-items:center;gap:14px;}
.me{font-size:14px;display:flex;align-items:center;gap:8px;}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;}
.btn-small{padding:8px 14px;background:var(--primary);color:#fff;border:none;border-radius:6px;font-size:12.5px;font-weight:600;cursor:pointer;text-decoration:none;display:inline-block;}
.btn-small:hover{background:var(--primary-dark);}
.btn-small.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--line);}
.btn-small.btn-danger{background:var(--red);}
.rank-badge{font-style:normal;font-size:10.5px;font-weight:700;padding:2px 8px;border-radius:10px;letter-spacing:.02em;}
.rank-member{background:#e5e7eb;color:#374151;}
.rank-vip{background:#fef3c7;color:#92400e;}
.rank-moderator{background:#dbeafe;color:#1e40af;}
.rank-admin{background:#ede9fe;color:#5b21b6;}

/* ---- Chat layout ---- */
.chat-layout{display:flex;height:calc(100vh - 57px);}
.sidebar{width:260px;background:var(--surface);border-right:1px solid var(--line);padding:18px;overflow-y:auto;}
.sidebar h3{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:18px 0 8px;}
.sidebar h3:first-child{margin-top:0;}
.sidebar ul{list-style:none;margin:0;padding:0;}
.room-item, .user-item{padding:9px 10px;border-radius:8px;cursor:pointer;font-size:14px;display:flex;align-items:center;gap:8px;}
.room-item:hover, .user-item:hover{background:var(--bg);}
.room-item.active, .user-item.active{background:#eef2ff;color:var(--primary-dark);font-weight:600;}

.chat-main{flex:1;display:flex;flex-direction:column;}
.chat-header{padding:16px 22px;border-bottom:1px solid var(--line);background:var(--surface);font-weight:600;}
.messages{flex:1;overflow-y:auto;padding:20px 24px;display:flex;flex-direction:column;gap:14px;}
.msg{max-width:60%;}
.msg .meta{font-size:11.5px;color:var(--muted);margin-bottom:3px;}
.msg .bubble{background:var(--surface);border:1px solid var(--line);padding:10px 14px;border-radius:10px;font-size:14.5px;line-height:1.5;}
.msg.mine{align-self:flex-end;}
.msg.mine .bubble{background:var(--primary);color:#fff;border-color:var(--primary);}
.msg .report-link{font-size:10.5px;color:var(--muted);cursor:pointer;margin-top:3px;display:inline-block;}
.msg .report-link:hover{color:var(--red);}

.composer{display:flex;gap:10px;padding:16px 22px;border-top:1px solid var(--line);background:var(--surface);}
.composer input{flex:1;padding:12px 14px;border:1px solid var(--line);border-radius:8px;font-size:14px;}
.composer button{padding:12px 22px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-weight:600;cursor:pointer;}
.composer button:disabled, .composer input:disabled{opacity:.5;cursor:not-allowed;}

/* ---- Admin ---- */
.admin-wrap{max-width:1100px;margin:0 auto;padding:30px 24px;display:flex;flex-direction:column;gap:30px;}
.admin-card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:24px;}
.admin-card h2{margin:0 0 6px;font-size:18px;}
.admin-card .hint{color:var(--muted);font-size:13px;margin-bottom:16px;}
.admin-table{width:100%;border-collapse:collapse;font-size:13.5px;}
.admin-table th{text-align:left;padding:10px 8px;border-bottom:2px solid var(--line);color:var(--muted);font-size:11.5px;text-transform:uppercase;letter-spacing:.05em;}
.admin-table td{padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:middle;}
.admin-table .msg-content{max-width:260px;}
.actions-cell{display:flex;gap:6px;flex-wrap:wrap;align-items:center;}
.tag{font-size:11px;font-weight:700;padding:3px 9px;border-radius:10px;}
.tag-red{background:#fee2e2;color:#991b1b;}
.tag-orange{background:#ffedd5;color:#9a3412;}
.tag-green{background:#dcfce7;color:#166534;}
.muted{color:var(--muted);font-size:13px;}