:root {
  --bg0:#111214;--bg1:#1a1b1e;--bg2:#232428;--bg3:#2e3035;
  --accent:#5865f2;--accent2:#4752c4;
  --green:#23a55a;--red:#f23f42;
  --text:#dbdee1;--text2:#949ba4;--text3:#6d6f78;
  --border:#3b3d45;
  --sw:240px;--mw:220px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;background:var(--bg0);color:var(--text);font-family:'Segoe UI',system-ui,sans-serif;font-size:15px}
input,button{font-family:inherit;font-size:inherit}
ul{list-style:none}
.hidden{display:none!important}

/* Auth */
.auth-screen{display:flex;align-items:center;justify-content:center;height:100vh}
.auth-card{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:36px 40px;width:380px;display:flex;flex-direction:column;gap:16px}
.auth-logo{font-size:24px;font-weight:800;letter-spacing:4px;text-align:center;color:var(--accent)}
.auth-tabs{display:flex;gap:4px;background:var(--bg3);border-radius:8px;padding:4px}
.tab-btn{flex:1;background:transparent;border:none;color:var(--text2);padding:8px;border-radius:6px;cursor:pointer;font-weight:600;transition:all .15s}
.tab-btn.active{background:var(--bg2);color:var(--text)}
.tab-panel{display:none;flex-direction:column;gap:10px}
.tab-panel.active{display:flex}
input[type=text],input[type=email],input[type=password]{background:var(--bg1);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:10px 14px;outline:none;transition:border .15s;width:100%}
input:focus{border-color:var(--accent)}
.btn-primary{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:11px;font-weight:700;cursor:pointer;transition:background .15s;width:100%}
.btn-primary:hover{background:var(--accent2)}
.btn-secondary{background:var(--bg3);color:var(--text);border:none;border-radius:8px;padding:11px 18px;font-weight:600;cursor:pointer}
.form-error{color:var(--red);font-size:13px;min-height:16px}

/* App layout */
.app{display:grid;grid-template-columns:var(--sw) 1fr var(--mw);height:100vh;overflow:hidden}

/* Left sidebar */
.sidebar{background:var(--bg2);display:flex;flex-direction:column;border-right:1px solid var(--border)}
.sidebar-header{padding:16px;font-weight:800;font-size:16px;color:var(--accent);letter-spacing:2px;border-bottom:1px solid var(--border)}
.sidebar-section{flex:1;overflow-y:auto;padding:8px 0}
.sidebar-section::-webkit-scrollbar{width:4px}
.sidebar-section::-webkit-scrollbar-thumb{background:var(--bg3);border-radius:4px}
.section-header{display:flex;align-items:center;justify-content:space-between;padding:8px 16px 4px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--text3)}
.icon-btn{background:transparent;border:none;color:var(--text2);cursor:pointer;font-size:18px;padding:2px 6px;border-radius:4px;line-height:1;transition:color .15s,background .15s}
.icon-btn:hover{color:var(--text);background:var(--bg3)}
.icon-btn.danger:hover{color:var(--red)}
.rooms-list{padding:0 8px}
.room-item{display:flex;align-items:center;gap:8px;padding:7px 10px;border-radius:6px;cursor:pointer;color:var(--text2);font-size:15px;transition:background .12s,color .12s;user-select:none}
.room-item:hover,.room-item.active{background:var(--bg3);color:var(--text)}
.room-hash{color:var(--text3);font-size:18px}

/* User panel */
.user-panel{display:flex;align-items:center;gap:10px;padding:10px 12px;background:var(--bg1);border-top:1px solid var(--border)}
.user-avatar{width:34px;height:34px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;flex-shrink:0}
.user-info{flex:1;min-width:0}
.username{font-weight:700;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-status{font-size:12px;color:var(--green)}

/* Chat */
.chat-main{display:flex;flex-direction:column;background:var(--bg1);overflow:hidden}
.chat-header{display:flex;align-items:center;gap:10px;padding:12px 20px;border-bottom:1px solid var(--border);background:var(--bg2);flex-shrink:0}
.channel-hash{color:var(--text3);font-size:22px;font-weight:300}
#current-room-name{font-weight:700;font-size:16px}
.room-desc{color:var(--text2);font-size:13px;border-left:1px solid var(--border);padding-left:10px}
.messages-area{flex:1;overflow-y:auto;padding:20px 20px 10px;display:flex;flex-direction:column;gap:2px}
.messages-area::-webkit-scrollbar{width:6px}
.messages-area::-webkit-scrollbar-thumb{background:var(--bg3);border-radius:4px}
.welcome-msg{color:var(--text2);text-align:center;margin-top:40px}

/* Messages */
.message{display:flex;gap:14px;padding:4px 6px;border-radius:4px;transition:background .1s}
.message:hover{background:rgba(255,255,255,.025)}
.message .av{width:38px;height:38px;border-radius:50%;background:var(--accent2);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex-shrink:0;margin-top:2px}
.message .body{flex:1;min-width:0}
.message .meta{display:flex;align-items:baseline;gap:8px;margin-bottom:2px}
.message .sender{font-weight:700;font-size:15px}
.message .ts{font-size:11px;color:var(--text3)}
.message .edited-tag{font-size:11px;color:var(--text3);font-style:italic}
.message .content{color:var(--text);line-height:1.5;word-break:break-word;white-space:pre-wrap}
.msg-system{color:var(--text3);font-style:italic;font-size:13px;padding:4px 0;text-align:center}
.msg-grouped{padding-left:52px}
.msg-grouped .av{display:none}
.msg-grouped .meta{display:none}
.typing-indicator{font-size:12px;color:var(--text3);padding:2px 0 6px 52px;min-height:20px;font-style:italic}

/* Input area */
.message-input-area{display:flex;align-items:center;gap:8px;padding:10px 16px 16px;flex-shrink:0}
.message-input-area input{flex:1;background:var(--bg3);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:11px 16px;outline:none}
.message-input-area input:focus{border-color:var(--accent)}
.voice-btn{background:var(--bg3);border:1px solid var(--border);border-radius:8px;color:var(--text2);cursor:pointer;padding:10px 12px;font-size:16px;transition:all .15s;flex-shrink:0}
.voice-btn:hover{background:var(--green);color:#fff;border-color:var(--green)}
.voice-btn.in-voice{background:var(--green);color:#fff;border-color:var(--green)}
.send-btn{background:var(--accent);border:none;border-radius:8px;color:#fff;cursor:pointer;padding:10px 14px;font-size:16px;transition:background .15s;flex-shrink:0}
.send-btn:hover{background:var(--accent2)}

/* Right sidebar */
.members-sidebar{background:var(--bg2);border-left:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}
.members-header{padding:16px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--text3);border-bottom:1px solid var(--border)}
.members-list{flex:1;overflow-y:auto;padding:8px}
.member-item{display:flex;align-items:center;gap:10px;padding:6px 8px;border-radius:6px}
.m-avatar{width:30px;height:30px;border-radius:50%;background:var(--bg3);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;position:relative;flex-shrink:0}
.m-status{position:absolute;bottom:-1px;right:-1px;width:10px;height:10px;border-radius:50%;border:2px solid var(--bg2)}
.s-online{background:var(--green)}.s-offline{background:var(--text3)}
.m-name{font-size:14px;font-weight:600;color:var(--text2)}
.voice-section{border-top:1px solid var(--border);padding:8px}
.voice-header{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--text3);padding:4px 8px 8px}
.voice-users-list{display:flex;flex-direction:column;gap:2px}
.voice-user-item{display:flex;align-items:center;gap:8px;padding:4px 8px;border-radius:4px;color:var(--text2);font-size:13px}

/* Voice bar */
.voice-bar{position:fixed;bottom:0;left:0;right:0;background:var(--bg0);border-top:2px solid var(--green);padding:8px 20px;display:flex;align-items:center;gap:20px;z-index:100}
.voice-bar.hidden{display:none!important}
.voice-bar-room{font-size:13px;font-weight:600;color:var(--green)}
.voice-controls{display:flex;gap:8px;margin-left:auto}
.vc-btn{background:var(--bg3);border:1px solid var(--border);border-radius:8px;color:var(--text);cursor:pointer;padding:8px 14px;font-size:16px;transition:all .15s}
.vc-btn:hover{background:var(--bg2)}
.vc-btn.active{background:var(--accent);border-color:var(--accent)}
.vc-btn.muted,.vc-btn.deafened{background:var(--red);border-color:var(--red)}
.vc-btn.danger{border-color:var(--red);color:var(--red)}
.vc-btn.danger:hover{background:var(--red);color:#fff}

/* Screen share */
.screen-share-container{position:fixed;top:50px;left:var(--sw);right:var(--mw);bottom:56px;background:#000;display:flex;flex-wrap:wrap;gap:4px;z-index:50;align-items:center;justify-content:center}
.screen-share-container video{max-width:100%;max-height:100%;object-fit:contain}
#remote-screens{display:flex;flex-wrap:wrap;gap:4px}
#remote-screens video{width:320px;height:180px;object-fit:cover}

/* Modal */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.7);display:flex;align-items:center;justify-content:center;z-index:200}
.modal-card{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:28px 32px;width:380px;display:flex;flex-direction:column;gap:14px}
.modal-title{font-size:18px;font-weight:800;margin-bottom:4px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end}
.toggle-label{display:flex;align-items:center;gap:8px;cursor:pointer;color:var(--text2);font-size:14px}