*{box-sizing:border-box;margin:0;padding:0;}
:root{
  --bg:#0C0C18;--surface:#13132A;--surface2:#1C1C38;--border:#2A2A4A;
  --purple:#8B5CF6;--pink:#EC4899;--cyan:#06B6D4;--green:#10B981;--amber:#F59E0B;--red:#EF4444;
  --text:#F0EEFF;--muted:#8080A8;--subtle:#3A3A60;
}
body{font-family:'DM Sans',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden;}
h1,h2,h3,.brand{font-family:'Syne',sans-serif;}
#auth-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;position:relative;overflow:hidden;}
.auth-blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:0.18;pointer-events:none;}
.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:40px;width:100%;max-width:420px;position:relative;z-index:1;}
.auth-tab{flex:1;padding:10px;background:none;border:none;color:var(--muted);font-family:'Syne',sans-serif;font-size:14px;font-weight:600;cursor:pointer;border-bottom:2px solid transparent;transition:all 0.2s;}
.auth-tab.active{color:var(--purple);border-bottom-color:var(--purple);}
#app-screen{display:none;min-height:100vh;}
.sidebar{width:240px;background:var(--surface);border-right:1px solid var(--border);min-height:100vh;position:fixed;top:0;left:0;z-index:200;display:flex;flex-direction:column;transition:transform 0.3s ease;}
.main-content{margin-left:240px;min-height:100vh;}
.sidebar-overlay{display:none;position:fixed;inset:0;background:#00000088;z-index:150;}
.sidebar-overlay.show{display:block;}
.nav-item{display:flex;align-items:center;gap:12px;padding:10px 16px;margin:2px 10px;border-radius:12px;cursor:pointer;color:var(--muted);font-size:13.5px;font-weight:500;transition:all 0.18s;border:1px solid transparent;}
.nav-item:hover{background:var(--surface2);color:var(--text);}
.nav-item.active{background:linear-gradient(135deg,#8B5CF620,#EC489920);color:#C084FC;border-color:#8B5CF630;}
.nav-icon{font-size:16px;width:20px;text-align:center;}
.page{display:none;padding:28px;}
.page.active{display:block;}
.page-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:24px;gap:12px;flex-wrap:wrap;}
.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 18px;border-radius:10px;border:none;cursor:pointer;font-size:13px;font-weight:600;font-family:'DM Sans',sans-serif;transition:all 0.18s;}
.btn-primary{background:linear-gradient(135deg,var(--purple),var(--pink));color:#fff;}
.btn-primary:hover{opacity:0.85;transform:translateY(-1px);}
.btn-ghost{background:var(--surface2);border:1px solid var(--border);color:var(--muted);}
.btn-ghost:hover{color:var(--text);border-color:var(--subtle);}
.input{background:var(--surface2);border:1px solid var(--border);color:var(--text);border-radius:10px;padding:10px 14px;font-size:13.5px;width:100%;outline:none;font-family:'DM Sans',sans-serif;transition:border 0.2s;}
.input:focus{border-color:var(--purple);}
.input::placeholder{color:var(--subtle);}
.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px;}
.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600;}
.tag{display:inline-flex;align-items:center;padding:2px 9px;border-radius:20px;font-size:11px;background:var(--surface2);color:#C084FC;margin:2px;border:1px solid var(--border);}
.stat-card{background:var(--surface2);border:1px solid var(--border);border-radius:14px;padding:18px 20px;}
.room-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px;transition:all 0.2s;}
.room-card:hover{border-color:#8B5CF640;transform:translateY(-2px);}
.note-card{background:var(--surface);border-left:3px solid;border-radius:0 14px 14px 0;padding:16px;margin-bottom:12px;border-top:1px solid var(--border);border-right:1px solid var(--border);border-bottom:1px solid var(--border);transition:all 0.2s;}
.note-card:hover{transform:translateX(3px);}
.kanban-col{background:var(--surface2);border-radius:14px;padding:14px;min-height:280px;border:1px solid var(--border);flex:1;min-width:190px;}
.kanban-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:13px;margin-bottom:9px;cursor:grab;transition:all 0.15s;}
.kanban-card:hover{border-color:#8B5CF660;}
.kanban-card.dragging{opacity:0.45;transform:scale(0.96);}
.peer-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px;text-align:center;transition:all 0.2s;}
.peer-card:hover{border-color:#EC489940;transform:translateY(-2px);}
.avatar{width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:'Syne',sans-serif;font-size:16px;font-weight:700;margin:0 auto 10px;}
.chat-bubble{border-radius:14px;padding:10px 14px;max-width:72%;font-size:13px;line-height:1.5;margin-bottom:6px;word-break:break-word;}
.chat-bubble.theirs{background:var(--surface2);border:1px solid var(--border);}
.chat-bubble.mine{background:linear-gradient(135deg,var(--purple),#A855F7);color:#fff;}
.channel-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;cursor:pointer;transition:all 0.18s;margin-bottom:3px;}
.channel-item:hover{background:var(--surface2);}
.channel-item.active{background:var(--surface2);color:#C084FC;}
.modal-overlay{position:fixed;inset:0;background:#00000099;z-index:999;display:none;align-items:center;justify-content:center;padding:16px;}
.modal-overlay.open{display:flex;}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:28px;width:100%;max-width:460px;max-height:90vh;overflow-y:auto;}
.toast{position:fixed;bottom:24px;right:24px;background:var(--purple);color:#fff;padding:12px 20px;border-radius:12px;font-size:13.5px;z-index:9999;opacity:0;transform:translateY(16px);transition:all 0.3s;pointer-events:none;font-weight:500;}
.toast.show{opacity:1;transform:translateY(0);}
.progress-bar{background:var(--surface2);border-radius:99px;height:5px;overflow:hidden;}
.progress-fill{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--purple),var(--pink));transition:width 0.5s;}
.spinner{display:inline-block;width:16px;height:16px;border:2px solid #ffffff44;border-top-color:#fff;border-radius:50%;animation:spin 0.7s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}
.hamburger-btn{display:none;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:8px 11px;cursor:pointer;color:var(--text);font-size:18px;position:fixed;top:14px;left:14px;z-index:300;line-height:1;}
.topbar{display:none;align-items:center;padding:14px 16px 14px 58px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;}
.error-msg{color:var(--red);font-size:12px;margin-top:4px;display:none;}
select.input option{background:var(--surface2);}
@media(max-width:768px){
  .sidebar{transform:translateX(-100%);}
  .sidebar.open{transform:translateX(0);}
  .main-content{margin-left:0!important;}
  .hamburger-btn{display:flex;align-items:center;}
  .topbar{display:flex;}
  .page{padding:14px;}
  .stats-grid{grid-template-columns:repeat(2,1fr)!important;}
  .rooms-grid{grid-template-columns:1fr!important;}
  .peers-grid{grid-template-columns:repeat(2,1fr)!important;}
  .chat-grid{grid-template-columns:1fr!important;}
  .chat-channels-col{display:none;}
  .dash-bottom-grid{grid-template-columns:1fr!important;}
  .page-header{flex-direction:column;}
  .kanban-wrap{overflow-x:auto;}
}
.demo-banner{background:linear-gradient(135deg,#F59E0B22,#EF444422);border:1px solid #F59E0B44;border-radius:10px;padding:10px 16px;font-size:12px;color:#FCD34D;margin-bottom:20px;display:none;}
/* SETUP GUIDE */
.step-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:22px 24px;margin-bottom:16px;position:relative;}
.step-num{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--purple),var(--pink));color:#fff;font-family:'Syne',sans-serif;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.step-connector{width:2px;background:linear-gradient(to bottom,var(--purple),var(--pink));margin:0 15px;flex:none;min-height:24px;}
.code-block{background:#080814;border:1px solid var(--border);border-radius:12px;padding:18px 20px;font-family:'Courier New',monospace;font-size:12.5px;line-height:1.7;overflow-x:auto;position:relative;margin-top:12px;}
.code-block .kw{color:#C084FC;}
.code-block .str{color:#34D399;}
.code-block .cmt{color:#4A4A70;}
.code-block .key{color:#60A5FA;}
.copy-btn{position:absolute;top:10px;right:10px;background:var(--surface2);border:1px solid var(--border);color:var(--muted);border-radius:7px;padding:4px 10px;font-size:11px;cursor:pointer;font-family:'DM Sans',sans-serif;transition:all 0.18s;}
.copy-btn:hover{color:var(--text);border-color:var(--purple);}
.rule-tag{display:inline-flex;align-items:center;padding:2px 10px;border-radius:6px;font-size:11px;font-family:'Courier New',monospace;margin:2px;}
.guide-link{color:#C084FC;text-decoration:none;font-weight:600;}
.guide-link:hover{text-decoration:underline;}
.checklist-item{display:flex;align-items:flex-start;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);}
.checklist-item:last-child{border-bottom:none;}
.check-icon{width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0;margin-top:1px;}
.alert-card{border-radius:12px;padding:14px 16px;font-size:13px;line-height:1.6;margin-bottom:16px;border:1px solid;}