*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg-main:#1A1D21;
  --bg-nav:#14161A;
  --bg-panel:#1A1D21;
  --bg-hover:rgba(255,255,255,.04);
  --bg-hover-strong:rgba(255,255,255,.08);
  --bg-input:#222529;
  --bg-elevated:#27292D;
  --text-primary:#D1D2D3;
  --text-strong:#FFFFFF;
  --text-secondary:#ABABAD;
  --text-muted:#868B90;
  --accent:#1D9BD1;
  --accent-hover:#36C5F0;
  --accent-dim:rgba(29,155,209,.15);
  --active-bg:#1164A3;
  --active-text:#FFFFFF;
  --danger:#E01E5A;
  --warning:#ECB22E;
  --success:#2EB67D;
  --border:rgba(255,255,255,.08);
  --border-strong:rgba(255,255,255,.16);
  --shadow:rgba(0,0,0,.35);
  --reply-bar:rgba(29,155,209,.4);
  --members-w:260px;
}

body{
  font-family:"Lato",-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue','Noto Sans SC',sans-serif;
  background:var(--bg-main);color:var(--text-primary);
  height:100vh;height:100dvh;overflow:hidden;
  font-size:15px;line-height:1.46;
  -webkit-font-smoothing:antialiased;
  -webkit-tap-highlight-color:transparent;
}
.hidden{display:none!important}

/* ===== Lobby ===== */
.lobby-overlay{position:fixed;inset:0;z-index:500;display:flex;align-items:center;justify-content:center;background:radial-gradient(ellipse at top,#2A1B3D 0%,#1A1D21 55%);padding:20px}
.lobby-card{position:relative;background:var(--bg-main);border:1px solid var(--border);border-radius:14px;padding:32px 30px;max-width:420px;width:100%;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.lobby-hero{display:flex;flex-direction:column;align-items:center;gap:8px;margin-bottom:10px}
.lobby-avatar{width:72px;height:72px;border-radius:18px;display:flex;align-items:center;justify-content:center;font-size:38px;box-shadow:0 8px 24px rgba(0,0,0,.35)}
.lobby-avatar-change{background:transparent;border:none;color:var(--accent);font-size:12px;cursor:pointer;padding:2px 8px;border-radius:4px}
.lobby-avatar-change:hover{background:var(--accent-dim)}
.lobby-card h1{font-size:26px;text-align:center;margin-bottom:4px;color:var(--text-strong);font-weight:900;letter-spacing:-.5px}
.lobby-card .subtitle{text-align:center;color:var(--text-muted);font-size:13px;margin-bottom:18px}
.security-badges{display:flex;gap:6px;justify-content:center;margin-bottom:20px;flex-wrap:wrap}
.badge{background:transparent;color:var(--text-secondary);padding:3px 10px;border-radius:4px;font-size:11px;border:1px solid var(--border-strong);font-weight:600;letter-spacing:.3px;cursor:help;transition:all .15s}
.badge:hover{color:var(--accent);border-color:var(--accent)}
.conn-line{text-align:center;margin-top:14px;font-size:12px;color:var(--text-muted)}

.lobby-tabs{display:flex;gap:2px;margin-bottom:18px;background:var(--bg-input);padding:3px;border-radius:8px}
.lobby-tab{flex:1;padding:9px;background:transparent;border:none;color:var(--text-secondary);font-size:14px;font-weight:700;cursor:pointer;border-radius:6px;transition:all .15s}
.lobby-tab.active{background:var(--bg-elevated);color:var(--text-strong)}
.lobby-tab:hover:not(.active){color:var(--text-primary)}
.lobby-panel.hidden{display:none}

/* ===== Form ===== */
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:13px;color:var(--text-secondary);margin-bottom:5px;font-weight:600}
.form-group input[type="text"],.form-group input[type="password"]{
  width:100%;padding:10px 14px;background:var(--bg-input);border:1px solid var(--border-strong);
  border-radius:6px;color:var(--text-strong);font-size:14px;outline:none;transition:all .15s;
  font-family:inherit;
}
.form-group input:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(29,155,209,.1)}
.form-group input::placeholder{color:var(--text-muted)}
.form-group input::selection{background:rgba(29,155,209,.35)}
.checkbox-label{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-primary);cursor:pointer;padding:4px 0;user-select:none}
.checkbox-label input[type="checkbox"]{accent-color:var(--accent);width:16px;height:16px;cursor:pointer;flex-shrink:0}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border:none;border-radius:6px;font-size:14px;font-weight:700;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);gap:6px;font-family:inherit;white-space:nowrap;line-height:1.2;position:relative;overflow:hidden}
.btn:active{transform:scale(.97)}
.btn:disabled{opacity:.7;cursor:not-allowed}
.btn:disabled:hover{transform:none}
.btn.loading{color:transparent!important;position:relative;pointer-events:none}
.btn.loading::after{content:'';position:absolute;inset:0;margin:auto;width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}
.btn-primary{background:linear-gradient(135deg,var(--success),#248C60);color:#fff;box-shadow:0 2px 8px rgba(46,182,125,.25)}
.btn-primary:hover{background:linear-gradient(135deg,#36C98A,#1B7A52);box-shadow:0 4px 16px rgba(46,182,125,.4);transform:translateY(-1px)}
.btn-secondary{background:transparent;color:var(--text-primary);border:1px solid var(--border-strong)}
.btn-secondary:hover{background:var(--bg-hover)}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{background:#C0174B}
.btn-block{width:100%}
.btn-small{padding:8px 18px;font-size:14px;min-height:36px}
.btn-tiny{padding:5px 10px;font-size:12px;min-height:28px}

.divider{text-align:center;color:var(--text-muted);font-size:12px;position:relative}
.divider::before,.divider::after{content:'';position:absolute;top:50%;width:35%;height:1px;background:var(--border)}

/* ===== Tooltip ===== */
.tooltip{
  position:fixed;z-index:9998;
  background:var(--bg-elevated);border:1px solid var(--border-strong);
  border-radius:8px;padding:12px 14px;max-width:320px;
  box-shadow:0 8px 28px rgba(0,0,0,.5);
  font-size:12px;line-height:1.55;color:var(--text-primary);
  opacity:0;pointer-events:none;transition:opacity .15s;
  transform:translateX(-50%);
}
.tooltip.open{opacity:1}
.tooltip-title{color:var(--accent);font-weight:700;font-size:12px;margin-bottom:4px;letter-spacing:.3px}
.tooltip-body{color:var(--text-secondary)}
.tooltip-usage{color:var(--text-primary);font-size:11px;margin-top:6px;padding-top:6px;border-top:1px solid var(--border)}
.tooltip-usage b{color:var(--success);font-weight:700}

/* ===== App layout (2 col: chat + members slide-in) ===== */
.app{display:grid;grid-template-columns:1fr var(--members-w);height:100vh;height:100dvh;overflow:hidden;transition:grid-template-columns .2s}
.app.members-closed{grid-template-columns:1fr 0}

/* Mobile backdrop */
.mobile-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:399;opacity:0;pointer-events:none;transition:opacity .2s}
.app.mobile-members-open .mobile-backdrop{opacity:1;pointer-events:auto}

/* ===== Top Navigation Bar ===== */
.top-nav{display:flex;align-items:center;justify-content:space-between;padding:0 10px;height:48px;background:var(--bg-nav);border-bottom:1px solid var(--border);flex-shrink:0;gap:10px;z-index:10}
.top-nav-left{display:flex;align-items:center;gap:12px;min-width:0;flex:1}
.brand{color:var(--text-strong);font-weight:900;font-size:14px;padding:0 4px 0 8px;letter-spacing:-.3px;flex-shrink:0}
.top-nav-right{display:flex;align-items:center;gap:6px;flex-shrink:0}

/* Tab bar (room tabs) */
.tab-bar{display:flex;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:none;flex:1;min-width:0;padding:0 4px}
.tab-bar::-webkit-scrollbar{display:none}

.room-tab{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 12px;border-radius:6px;cursor:pointer;
  color:var(--text-secondary);font-size:14px;font-weight:600;
  white-space:nowrap;transition:all .15s;
  background:transparent;border:none;font-family:inherit;position:relative;
}
.room-tab:hover{background:var(--bg-hover);color:var(--text-strong)}
.room-tab.active{background:var(--bg-elevated);color:var(--text-strong);box-shadow:inset 0 -2px 0 var(--accent)}
.room-tab{animation:tabIn .22s cubic-bezier(.2,.85,.25,1)}
.room-tab.leaving{animation:tabOut .22s cubic-bezier(.4,0,.6,1) forwards;pointer-events:none}
@keyframes tabIn{from{opacity:0;transform:translateY(-4px) scale(.9)}to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes tabOut{to{opacity:0;transform:translateY(-4px) scale(.85);max-width:0;padding-left:0;padding-right:0;margin-left:-2px}}
.room-tab .room-tab-hash{color:var(--text-muted);font-weight:400}
.room-tab.active .room-tab-hash{color:var(--text-strong)}
.room-tab.has-unread::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--danger);display:inline-block;flex-shrink:0}
.room-tab .room-tab-close{
  display:inline-flex;align-items:center;justify-content:center;
  width:16px;height:16px;border-radius:4px;background:transparent;
  border:none;color:var(--text-muted);font-size:13px;cursor:pointer;
  padding:0;line-height:1;opacity:0;transition:all .15s;
}
.room-tab:hover .room-tab-close{opacity:.7}
.room-tab .room-tab-close:hover{opacity:1!important;background:var(--bg-hover-strong);color:var(--danger)}

.tab-add-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:6px;background:transparent;
  border:none;color:var(--text-secondary);font-size:18px;font-weight:700;
  cursor:pointer;transition:all .15s;flex-shrink:0;
}
.tab-add-btn:hover{background:var(--bg-hover-strong);color:var(--text-strong)}

.top-action-btn{
  display:inline-flex;align-items:center;gap:4px;
  padding:5px 10px;border:none;background:transparent;
  color:var(--text-secondary);font-size:13px;cursor:pointer;border-radius:6px;
  font-family:inherit;
}
.top-action-btn:hover{background:var(--bg-hover-strong);color:var(--text-strong)}

/* ===== Avatar ===== */
.avatar-base{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:8px;overflow:hidden;flex-shrink:0;
  user-select:none;font-family:'Apple Color Emoji','Segoe UI Emoji',sans-serif;
}

/* ===== User menu button ===== */
.user-menu-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:4px 10px 4px 4px;border-radius:8px;background:transparent;
  border:none;color:var(--text-primary);cursor:pointer;font-family:inherit;
  transition:background .15s;
}
.user-menu-btn:hover{background:var(--bg-hover-strong)}
.user-avatar{width:30px;height:30px;border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.user-name{font-size:13px;font-weight:700;max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user-menu-caret{color:var(--text-muted);font-size:9px}

/* User menu dropdown */
.user-menu{
  position:fixed;background:var(--bg-elevated);border:1px solid var(--border-strong);
  border-radius:8px;padding:4px;min-width:180px;z-index:500;
  box-shadow:0 8px 24px var(--shadow);
}
.user-menu-item{
  display:flex;align-items:center;gap:8px;
  padding:8px 12px;border-radius:5px;cursor:pointer;
  font-size:14px;color:var(--text-primary);
}
.user-menu-item:hover{background:var(--bg-hover-strong);color:var(--text-strong)}
.user-menu-item.danger{color:var(--danger)}
.user-menu-item.danger:hover{background:rgba(224,30,90,.12)}
.user-menu-divider{height:1px;background:var(--border);margin:4px 0}

/* ===== Avatar picker ===== */
.avatar-modal-card{max-width:420px}
.avatar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:8px 0 10px}
.avatar-option{
  aspect-ratio:1;width:100%;border-radius:12px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:32px;
  border:2px solid transparent;transition:all .15s;
  font-family:'Apple Color Emoji','Segoe UI Emoji',sans-serif;
}
.avatar-option:hover{transform:scale(1.05)}
.avatar-option.selected{border-color:var(--accent);box-shadow:0 0 0 3px rgba(29,155,209,.25)}

/* ===== Chat Main ===== */
.chat-main{display:flex;flex-direction:column;overflow:hidden;position:relative;background:var(--bg-main);min-width:0}
.chat-empty{flex:1;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:14px;text-align:center;padding:20px}

.chat-sub-header{
  display:flex;align-items:center;padding:10px 18px;gap:8px;
  border-bottom:1px solid var(--border);flex-shrink:0;
}
.chat-sub-header .room-hash{font-size:16px;color:var(--text-muted)}
.chat-sub-header .room-title{font-size:15px;font-weight:900;color:var(--text-strong);flex-shrink:0}
.chat-sub-header .room-id{font-size:11px;color:var(--text-muted);cursor:pointer;padding:2px 6px;background:var(--bg-input);border-radius:4px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-sub-header .room-id:hover{color:var(--accent)}
.invite-icon-btn{background:transparent;border:1px solid var(--border-strong);color:var(--text-secondary);cursor:pointer;font-size:12px;padding:4px 10px;border-radius:5px;transition:all .15s;font-family:inherit}
.invite-icon-btn:hover{color:var(--accent);border-color:var(--accent)}

.messages-area{flex:1;overflow-y:auto;padding:16px 0;display:flex;flex-direction:column;gap:0;align-items:stretch;transition:opacity .15s}
.messages-area.switching{opacity:0}
.messages-area>*{max-width:1100px;width:100%;margin-left:auto;margin-right:auto}

/* ===== Messages ===== */
.message{display:flex;gap:10px;padding:4px 18px;position:relative;transition:background .1s;animation:msgIn .28s cubic-bezier(.2,.85,.25,1) both}
.message.grouped{animation-duration:.18s}
@keyframes msgIn{
  from{opacity:0;transform:translateY(6px)}
  to{opacity:1;transform:translateY(0)}
}
.message:hover{background:var(--bg-hover)}
.message .msg-avatar{
  width:36px;height:36px;border-radius:8px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:20px;font-weight:700;
  margin-top:1px;
  font-family:'Apple Color Emoji','Segoe UI Emoji',sans-serif;
}
.message.grouped{padding-top:0;padding-bottom:0}
.message.grouped .msg-avatar{visibility:hidden;height:0;margin-top:0}
.message.grouped .msg-meta{display:none}
.message.grouped .msg-timestamp-inline{display:inline;opacity:0;position:absolute;left:18px;top:50%;transform:translateY(-50%);width:36px;font-size:10px;color:var(--text-muted);text-align:center}
.message.grouped:hover .msg-timestamp-inline{opacity:1}

.message .msg-body{flex:1;min-width:0}
.message .msg-meta{display:flex;align-items:baseline;gap:8px;margin-bottom:1px}
.message .msg-sender{font-size:15px;font-weight:900;color:var(--text-strong);cursor:pointer}
.message .msg-sender:hover{text-decoration:underline}
.message .msg-time{font-size:12px;color:var(--text-muted)}
.message .msg-content{color:var(--text-primary);font-size:15px;line-height:1.46;word-break:break-word}
.message .msg-content img{max-width:360px;max-height:280px;border-radius:6px;margin-top:4px;cursor:pointer;border:1px solid var(--border)}
.message .msg-content a{color:var(--accent);text-decoration:none}
.message .msg-content a:hover{text-decoration:underline}

.message .msg-actions{
  display:none;position:absolute;top:-12px;right:16px;
  background:var(--bg-elevated);border:1px solid var(--border-strong);
  border-radius:8px;padding:2px;z-index:5;
  box-shadow:0 4px 12px var(--shadow);
}
.message:hover .msg-actions{display:flex;gap:0}
.msg-action-btn{background:transparent;border:none;color:var(--text-secondary);cursor:pointer;font-size:14px;padding:5px 8px;border-radius:4px;line-height:1}
.msg-action-btn:hover{background:var(--bg-hover-strong);color:var(--text-strong)}

.message.system{justify-content:center;padding:8px 18px;background:transparent}
.message.system .msg-avatar{display:none}
.message.system .msg-body{flex:0 1 auto;text-align:center;color:var(--text-muted);font-size:12px;font-style:italic}

.msg-reply-quote{background:transparent;border-left:3px solid var(--reply-bar);padding:2px 10px;margin-bottom:6px;font-size:13px;cursor:pointer}
.msg-reply-quote:hover{background:var(--bg-hover)}
.msg-reply-quote .reply-name{color:var(--accent);font-weight:700;display:block}
.msg-reply-quote .reply-text{color:var(--text-secondary);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:380px}

.msg-file{display:inline-flex;align-items:center;gap:10px;background:var(--bg-elevated);padding:10px 14px;border-radius:6px;margin-top:6px;cursor:pointer;border:1px solid var(--border);max-width:380px}
.msg-file:hover{background:var(--bg-hover-strong);border-color:var(--border-strong)}
.msg-file-icon{font-size:22px}
.msg-file-info{flex:1;min-width:0}
.msg-file-name{font-size:14px;font-weight:700;color:var(--text-strong);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.msg-file-size{font-size:12px;color:var(--text-muted)}

.msg-link-preview{display:block;background:var(--bg-elevated);border-left:3px solid var(--accent);border-radius:0 6px 6px 0;padding:8px 12px;margin-top:6px;text-decoration:none;max-width:420px}
.msg-link-preview:hover{background:var(--bg-hover-strong)}
.msg-link-preview .link-url{font-size:13px;color:var(--accent);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}
.msg-link-preview .link-domain{font-size:11px;color:var(--text-muted);margin-top:2px}

/* ===== Markdown ===== */
.md-inline{background:rgba(29,155,209,.1);border:1px solid rgba(29,155,209,.2);padding:1px 6px;border-radius:4px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:#6FCEFF}
.md-pre{background:var(--bg-elevated);border:1px solid var(--border);padding:12px 14px;border-radius:6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:var(--text-primary);overflow-x:auto;margin:4px 0;line-height:1.5;max-width:540px}
.md-pre code{font-family:inherit;white-space:pre}
.md-quote{border-left:3px solid var(--accent);padding:2px 12px;margin:4px 0;color:var(--text-secondary);font-style:normal;background:rgba(29,155,209,.04);border-radius:0 4px 4px 0;display:block}
.msg-content b{color:var(--text-strong);font-weight:700}
.msg-content i{font-style:italic}
.msg-content s{color:var(--text-muted);text-decoration:line-through}
.msg-content u{text-decoration:underline;text-decoration-color:var(--accent)}

/* Reply preview */
.reply-preview{display:flex;align-items:center;margin:0 18px 6px;padding:8px 12px;background:var(--bg-elevated);border:1px solid var(--border-strong);border-left:3px solid var(--reply-bar);border-radius:4px;gap:10px;flex-shrink:0}
.reply-preview-content{flex:1;min-width:0;font-size:13px}
.reply-preview-name{color:var(--accent);font-weight:700;margin-right:6px}
.reply-preview-text{color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.reply-preview-close{background:none;border:none;color:var(--text-muted);font-size:18px;cursor:pointer;padding:2px 6px;border-radius:4px;line-height:1}
.reply-preview-close:hover{color:var(--text-strong);background:var(--bg-hover)}

/* Input composer */
.chat-input-wrap{padding:0 18px 18px;flex-shrink:0;position:relative}
.chat-input-area{
  display:flex;flex-direction:column;background:var(--bg-main);
  border:1px solid var(--border-strong);border-radius:10px;overflow:hidden;
  transition:border-color .2s ease, box-shadow .2s ease, transform .15s ease;
  box-shadow:0 1px 0 rgba(0,0,0,.12);
}
.chat-input-area:focus-within{
  border-color:var(--accent);
  box-shadow:0 0 0 4px rgba(29,155,209,.15), 0 4px 16px rgba(29,155,209,.08);
}
.chat-input-area textarea{
  width:100%;display:block;padding:12px 14px 4px;background:transparent;border:none;
  color:var(--text-primary);font-size:15px;font-family:inherit;
  resize:none;outline:none;max-height:280px;min-height:42px;line-height:1.5;
  overflow-y:hidden;
}
.chat-input-area textarea::-webkit-scrollbar{width:8px}
.chat-input-area textarea::-webkit-scrollbar-track{background:transparent;margin:4px 0}
.chat-input-area textarea::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18);border-radius:4px}
.chat-input-area textarea::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.3)}
.chat-input-area textarea::placeholder{color:var(--text-muted);transition:color .15s}
.chat-input-area:focus-within textarea::placeholder{color:var(--text-secondary)}

.input-toolbar{display:flex;align-items:center;padding:4px 8px;gap:2px;border-top:1px solid var(--border)}
.input-actions{display:flex;gap:0;flex:1;align-items:center}
.input-action-btn{
  width:34px;height:30px;display:flex;align-items:center;justify-content:center;
  background:transparent;border:none;color:var(--text-secondary);cursor:pointer;
  font-size:16px;border-radius:6px;transition:all .18s cubic-bezier(.4,0,.2,1);
}
.input-action-btn:hover{background:var(--bg-hover-strong);color:var(--text-strong);transform:translateY(-1px)}
.input-action-btn:active{transform:translateY(0)}
.input-action-btn.slash-btn{font-weight:900;font-family:ui-monospace,monospace;font-size:15px}
.input-action-btn svg{width:18px;height:18px;stroke:currentColor;display:block}

.send-btn{
  min-width:34px;height:30px;padding:0 10px;background:transparent;border:none;
  color:var(--text-muted);font-size:15px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:all .18s cubic-bezier(.4,0,.2,1);border-radius:6px;
  position:relative;
}
.send-btn svg{width:17px;height:17px;stroke:currentColor;display:block}
.send-btn.active{background:var(--success);color:#fff;box-shadow:0 2px 8px rgba(46,182,125,.3)}
.send-btn.active:hover{background:#248C60;transform:translateY(-1px);box-shadow:0 4px 12px rgba(46,182,125,.4)}
.send-btn.flash{animation:sendFlash .35s cubic-bezier(.34,1.56,.64,1)}
@keyframes sendFlash{
  0%{transform:scale(1)}
  30%{transform:scale(1.25) rotate(-8deg);box-shadow:0 0 0 8px rgba(46,182,125,.3)}
  70%{transform:scale(.95) rotate(6deg)}
  100%{transform:scale(1) rotate(0)}
}

/* ===== Slash Popup ===== */
.slash-popup{
  display:none;position:absolute;bottom:calc(100% + 8px);left:18px;right:18px;
  background:var(--bg-elevated);border:1px solid var(--border-strong);
  border-radius:8px;max-height:320px;overflow-y:auto;
  box-shadow:0 -4px 20px var(--shadow);z-index:200;
}
.slash-popup.open{display:block}
.slash-popup-header{padding:6px 12px;font-size:11px;color:var(--text-muted);font-weight:700;letter-spacing:.5px;text-transform:uppercase;border-bottom:1px solid var(--border);background:var(--bg-input)}
.slash-item{display:flex;align-items:center;gap:10px;padding:10px 14px;cursor:pointer;transition:background .1s;font-size:14px}
.slash-item:hover,.slash-item.selected{background:var(--active-bg);color:#fff}
.slash-item.selected .slash-cmd,.slash-item.selected .slash-desc{color:#fff}
.slash-icon{width:24px;height:24px;display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0}
.slash-cmd{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700;color:var(--text-strong);flex-shrink:0}
.slash-args{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--text-muted);font-size:13px;flex-shrink:0}
.slash-desc{color:var(--text-secondary);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0}

/* ===== Emoji picker ===== */
.emoji-picker{display:none;position:absolute;bottom:100%;right:18px;margin-bottom:8px;background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:10px;width:360px;height:320px;overflow:hidden;box-shadow:0 -4px 24px var(--shadow);z-index:100;flex-direction:column}
.emoji-picker.open{display:flex}
.emoji-tabs{display:flex;gap:2px;padding:6px 6px 4px;background:var(--bg-elevated);border-bottom:1px solid var(--border);flex-shrink:0;overflow-x:auto;scrollbar-width:none}
.emoji-tabs::-webkit-scrollbar{display:none}
.emoji-tab{background:transparent;border:none;color:var(--text-secondary);font-size:13px;padding:5px 10px;border-radius:5px;cursor:pointer;font-family:inherit;white-space:nowrap;transition:all .15s;font-weight:600}
.emoji-tab:hover{background:var(--bg-hover-strong);color:var(--text-strong)}
.emoji-tab.active{background:var(--accent-dim);color:var(--accent)}
.emoji-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:2px;padding:8px;overflow-y:auto;flex:1}
.emoji-item{width:100%;aspect-ratio:1;display:flex;align-items:center;justify-content:center;font-size:22px;cursor:pointer;border-radius:5px;transition:all .12s;line-height:1}
.emoji-item:hover{background:var(--bg-hover-strong);transform:scale(1.2)}

/* ===== Members Panel ===== */
.members-panel{background:var(--bg-main);border-left:1px solid var(--border);overflow-y:auto;overflow-x:hidden;width:var(--members-w)}
.app.members-closed .members-panel{width:0;border:none}
.panel-header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;font-weight:900;font-size:15px;color:var(--text-strong);border-bottom:1px solid var(--border)}
.member-count{color:var(--text-muted);font-size:13px;font-weight:600}
.panel-section{padding:10px 10px}
.panel-section-title{font-size:11px;font-weight:700;color:var(--text-muted);text-transform:uppercase;margin-bottom:4px;padding:0 8px}

.member-item{display:flex;align-items:center;gap:10px;padding:6px 10px;font-size:14px;border-radius:6px;position:relative;cursor:default}
.member-item:hover{background:var(--bg-hover)}
.member-item .avatar{
  width:32px;height:32px;border-radius:7px;display:flex;align-items:center;justify-content:center;
  font-size:18px;flex-shrink:0;position:relative;
  font-family:'Apple Color Emoji','Segoe UI Emoji',sans-serif;
}
.member-item .avatar::after{content:'';position:absolute;bottom:-2px;right:-2px;width:10px;height:10px;border-radius:50%;background:var(--success);border:2px solid var(--bg-main)}
.member-item .member-info{flex:1;min-width:0;display:flex;align-items:center;gap:6px}
.member-item .member-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;color:var(--text-strong);font-weight:600}
.member-item .member-role{font-size:10px;color:var(--warning);background:rgba(236,178,46,.15);padding:1px 6px;border-radius:3px;font-weight:700;flex-shrink:0}
.member-item.is-me .member-name::after{content:' (我)';color:var(--text-muted);font-weight:400}

.pending-item{display:flex;align-items:center;gap:8px;padding:8px 10px;font-size:13px;background:rgba(236,178,46,.08);border-radius:6px;margin-bottom:4px}
.pending-item .pending-name{flex:1;color:var(--text-strong);font-weight:600}
.pending-item .pending-actions{display:flex;gap:4px}

/* ===== Modal ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.65);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);z-index:600;display:flex;align-items:center;justify-content:center;padding:20px;animation:fadeIn .18s ease}
.modal-card{background:var(--bg-main);border:1px solid var(--border-strong);border-radius:14px;padding:26px 28px;width:440px;max-width:100%;box-shadow:0 20px 60px rgba(0,0,0,.5);animation:modalIn .25s cubic-bezier(.2,.85,.25,1.05)}
.modal-card h3{font-size:18px;margin-bottom:18px;color:var(--text-strong);font-weight:900}
.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:20px}
.modal-actions.centered{justify-content:center}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes modalIn{from{opacity:0;transform:translateY(12px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}

/* Modal header with X close */
.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.modal-header h3{margin:0}
.modal-close{background:transparent;border:none;color:var(--text-muted);font-size:24px;width:30px;height:30px;border-radius:6px;cursor:pointer;line-height:1;display:flex;align-items:center;justify-content:center;transition:all .15s}
.modal-close:hover{background:var(--bg-hover-strong);color:var(--text-strong)}

/* Toggle switch */
.toggle{position:relative;display:inline-block;width:40px;height:22px;flex-shrink:0;cursor:pointer}
.toggle input{opacity:0;width:0;height:0}
.toggle-slider{position:absolute;inset:0;background:var(--bg-input);border:1px solid var(--border-strong);border-radius:20px;transition:all .25s cubic-bezier(.4,0,.2,1)}
.toggle-slider::before{content:'';position:absolute;height:16px;width:16px;left:2px;top:2px;background:#E5E7EB;border-radius:50%;transition:all .28s cubic-bezier(.4,0,.2,1);box-shadow:0 2px 4px rgba(0,0,0,.3)}
.toggle input:checked + .toggle-slider{background:var(--success);border-color:var(--success)}
.toggle input:checked + .toggle-slider::before{transform:translateX(18px);background:#fff}
.toggle:hover .toggle-slider{border-color:rgba(255,255,255,.25)}

/* Settings rows */
.settings-group{margin-top:8px;border-top:1px solid var(--border)}
.setting-row{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--border)}
.setting-icon{width:34px;height:34px;border-radius:8px;background:var(--bg-input);display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--accent);flex-shrink:0;font-weight:700;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.setting-info{flex:1;min-width:0}
.setting-name{font-size:14px;color:var(--text-strong);font-weight:700;line-height:1.3}
.setting-desc{font-size:12px;color:var(--text-muted);margin-top:2px;line-height:1.4}
.setting-expand{padding:0 0 14px 46px;border-bottom:1px solid var(--border);animation:expandIn .22s cubic-bezier(.2,.85,.25,1)}
.setting-expand.hidden{display:none}
@keyframes expandIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
.setting-expand input{width:100%;padding:9px 12px;background:var(--bg-input);border:1px solid var(--border-strong);border-radius:6px;color:var(--text-strong);font-size:13px;outline:none;font-family:inherit;transition:border-color .15s}
.setting-expand input:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(29,155,209,.1)}
.setting-expand input::placeholder{color:var(--text-muted)}

/* Invite modal */
.modal-invite{text-align:center;max-width:420px;padding:32px 28px 24px}
.invite-illustration{margin-bottom:16px;display:flex;justify-content:center}
.invite-icon-bg{width:72px;height:72px;border-radius:20px;background:linear-gradient(135deg,#FDE047,#F59E0B);display:flex;align-items:center;justify-content:center;font-size:38px;box-shadow:0 10px 28px rgba(245,158,11,.35);animation:bounceIn .45s cubic-bezier(.34,1.56,.64,1)}
@keyframes bounceIn{0%{transform:scale(0);opacity:0}70%{transform:scale(1.08)}100%{transform:scale(1);opacity:1}}
.invite-title{font-size:22px!important;margin-bottom:8px!important;color:var(--text-strong)}
.invite-sub{font-size:13px;color:var(--text-secondary);margin-bottom:22px;line-height:1.5}
.invite-link-group{display:flex;gap:0;align-items:stretch;background:var(--bg-input);border:1px solid var(--border-strong);border-radius:8px;padding:4px;margin-bottom:18px;transition:border-color .15s}
.invite-link-group:focus-within,.invite-link-group:hover{border-color:var(--accent)}
.modal-invite .invite-link-box{flex:1;background:transparent;border:none;padding:8px 12px;font-size:12px;font-family:ui-monospace,Menlo,monospace;color:var(--accent);text-align:left;margin:0;word-break:break-all;user-select:all;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;display:flex;align-items:center}
.invite-copy-btn{background:var(--success);color:#fff;border:none;padding:0 20px;border-radius:6px;font-size:13px;font-weight:700;cursor:pointer;transition:all .18s cubic-bezier(.4,0,.2,1);flex-shrink:0;font-family:inherit}
.invite-copy-btn:hover{background:#248C60;transform:scale(1.03)}
.invite-copy-btn:active{transform:scale(.97)}

/* Confirm dialog — compact */
.modal-confirm{max-width:360px;padding:22px 24px}
.modal-confirm h3{font-size:16px;margin-bottom:8px}
.modal-confirm .confirm-msg{font-size:14px;color:var(--text-secondary);line-height:1.5;margin-bottom:0}

.invite-link-box{background:var(--bg-input);border:1px solid var(--border);border-radius:6px;padding:10px 14px;font-size:13px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--accent);word-break:break-all;user-select:all;margin-bottom:6px}

/* Image Modal */
.image-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.9);z-index:1000;align-items:center;justify-content:center;cursor:zoom-out}
.image-modal.open{display:flex}
.image-modal img{max-width:90vw;max-height:90vh;border-radius:6px}

/* Toast */
.toast-container{position:fixed;top:16px;right:16px;z-index:9999;display:flex;flex-direction:column;gap:6px}
.toast{background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:6px;padding:10px 16px;font-size:13px;color:var(--text-strong);box-shadow:0 4px 20px var(--shadow);animation:slideIn .25s;max-width:320px;font-weight:500}
.toast.success{border-left:3px solid var(--success)}
.toast.error{border-left:3px solid var(--danger)}
.toast.info{border-left:3px solid var(--warning)}
@keyframes slideIn{from{transform:translateX(20px);opacity:0}to{transform:translateX(0);opacity:1}}

/* Conn */
.conn-status{font-size:12px;padding:3px 8px;border-radius:4px}
.conn-status.connected{color:var(--success)}
.conn-status.disconnected{color:var(--danger)}

/* Connection dot */
.conn-dot{
  width:8px;height:8px;border-radius:50%;display:inline-block;
  background:var(--danger);transition:background .3s;vertical-align:middle;flex-shrink:0;
  box-shadow:0 0 0 0 rgba(224,30,90,.4);
  animation:dotPulseRed 1.4s ease-out infinite;
}
.conn-dot.connected{
  background:var(--success);
  box-shadow:0 0 0 0 rgba(46,182,125,.5);
  animation:dotPulseGreen 2s ease-out infinite;
}
@keyframes dotPulseRed{
  0%{box-shadow:0 0 0 0 rgba(224,30,90,.5)}
  70%{box-shadow:0 0 0 7px rgba(224,30,90,0)}
  100%{box-shadow:0 0 0 0 rgba(224,30,90,0)}
}
@keyframes dotPulseGreen{
  0%{box-shadow:0 0 0 0 rgba(46,182,125,.4)}
  70%{box-shadow:0 0 0 6px rgba(46,182,125,0)}
  100%{box-shadow:0 0 0 0 rgba(46,182,125,0)}
}

/* Conn panel — top-right of lobby card, shows steps while connecting, collapses to dot when done */
.conn-panel{
  position:absolute;top:18px;right:18px;
  display:flex;flex-direction:column;align-items:flex-end;gap:6px;
  font-size:11px;z-index:2;
  transition:all .3s cubic-bezier(.2,.85,.25,1);
}
.conn-panel-collapsed{
  display:none;align-items:center;gap:6px;
  padding:4px 10px 4px 8px;border-radius:999px;
  background:rgba(46,182,125,.08);border:1px solid rgba(46,182,125,.25);
  color:var(--success);font-weight:600;line-height:1;
  animation:fadeIn .25s;
}
.conn-panel[data-state="done"] .conn-panel-collapsed{display:inline-flex}
.conn-panel[data-state="done"] .conn-panel-steps{display:none}

.conn-panel-steps{
  display:flex;flex-direction:column;gap:4px;
  background:var(--bg-elevated);border:1px solid var(--border-strong);
  border-radius:8px;padding:10px 12px;min-width:180px;
  box-shadow:0 4px 16px rgba(0,0,0,.35);
  animation:fadeIn .25s;
}
.conn-step{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-size:12px;line-height:1.4;transition:color .2s}
.conn-step.active{color:var(--text-primary)}
.conn-step.done{color:var(--text-secondary)}
.conn-step-marker{
  width:14px;height:14px;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  border-radius:50%;background:var(--bg-input);border:1px solid var(--border-strong);
  transition:all .2s;
}
.conn-step.active .conn-step-marker{
  border-color:var(--accent);
  background:transparent;
  animation:spin 1s linear infinite;
  border-top-color:transparent;
  border-right-color:transparent;
}
.conn-step.done .conn-step-marker{
  background:var(--success);border-color:var(--success);
  animation:none;
}
.conn-step.done .conn-step-marker::after{
  content:'';width:4px;height:7px;border-right:2px solid #fff;border-bottom:2px solid #fff;
  transform:rotate(45deg) translate(-1px,-1px);
}
.conn-step.failed .conn-step-marker{background:var(--danger);border-color:var(--danger)}
.conn-step.failed .conn-step-marker::after{content:'×';color:#fff;font-size:10px;font-weight:900;line-height:1}
.conn-step-label{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px}

/* Inline action button inside input (like refresh) */
.input-with-action{position:relative}
.input-with-action input{padding-right:38px!important}
.input-action-inline{
  position:absolute;right:4px;top:50%;transform:translateY(-50%);
  width:30px;height:30px;display:flex;align-items:center;justify-content:center;
  background:transparent;border:none;color:var(--text-muted);cursor:pointer;
  border-radius:6px;transition:all .15s;
}
.input-action-inline:hover{background:var(--bg-hover-strong);color:var(--accent)}
.input-action-inline:active{transform:translateY(-50%) scale(.9)}
.input-action-inline svg{width:15px;height:15px;stroke:currentColor;transition:transform .4s}
.input-action-inline.spinning svg{transform:rotate(360deg)}

/* Connecting banner — shown when user clicks before ws ready */
.connecting-banner{
  position:fixed;top:24px;left:50%;transform:translateX(-50%);
  background:var(--bg-elevated);border:1px solid var(--border-strong);
  border-radius:999px;padding:9px 18px 9px 14px;
  display:flex;align-items:center;gap:10px;
  color:var(--text-strong);font-size:13px;font-weight:600;
  box-shadow:0 8px 24px rgba(0,0,0,.4);
  z-index:9500;
  animation:bannerIn .25s cubic-bezier(.2,.85,.25,1);
}
.connecting-banner.hidden{display:none}
.connecting-banner .spinner-inline{
  width:14px;height:14px;flex-shrink:0;
  border:2px solid rgba(255,255,255,.18);
  border-top-color:var(--accent);
  border-radius:50%;
  animation:spin .6s linear infinite;
}
@keyframes bannerIn{from{transform:translate(-50%,-20px);opacity:0}to{transform:translateX(-50%);opacity:1}}

/* Absolute close X for modals like invite */
.modal-close-abs{position:absolute;top:14px;right:14px}
.modal-invite{position:relative}

/* Scrollbar */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:5px;border:2px solid transparent;background-clip:padding-box}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.2);background-clip:padding-box;border:2px solid transparent}

/* Upload Loading */
.upload-loading{position:absolute;bottom:calc(100% + 8px);left:18px;right:18px;display:flex;justify-content:center;z-index:50}
.upload-loading.hidden{display:none}
.upload-loading-inner{display:flex;align-items:center;gap:10px;background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:8px;padding:10px 18px;font-size:13px;color:var(--text-strong);box-shadow:0 4px 16px var(--shadow)}
.spinner{width:16px;height:16px;border:2px solid var(--border-strong);border-top-color:var(--accent);border-radius:50%;animation:spin .6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* Voice Recording */
.voice-recording{padding:10px 18px;background:var(--bg-elevated);border-top:1px solid var(--border);flex-shrink:0;margin:0 18px 6px;border-radius:6px}
.voice-recording.hidden{display:none}
.voice-recording-inner{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-strong)}
.voice-dot{width:10px;height:10px;border-radius:50%;background:var(--danger);animation:pulse 1s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* ===== Call invite card ===== */
.msg-call{
  display:flex;align-items:center;gap:14px;
  padding:14px 16px;border-radius:12px;margin-top:4px;
  max-width:380px;cursor:pointer;
  border:1px solid;transition:all .18s;
  position:relative;overflow:hidden;
}
.msg-call-icon{
  width:40px;height:40px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.msg-call-icon svg{width:20px;height:20px}
.msg-call-info{flex:1;min-width:0}
.msg-call-title{font-size:14px;font-weight:700;color:var(--text-strong);line-height:1.3}
.msg-call-meta{font-size:12px;color:var(--text-secondary);margin-top:2px;display:flex;align-items:center;gap:8px}
.msg-call-badge{font-size:11px;padding:2px 8px;border-radius:10px;font-weight:700;letter-spacing:.3px}
.msg-call-cta{font-size:13px;font-weight:700;flex-shrink:0;padding:6px 12px;border-radius:6px}

/* Pending — waiting for peer */
.msg-call.state-pending{background:rgba(29,155,209,.08);border-color:rgba(29,155,209,.35)}
.msg-call.state-pending:hover{background:rgba(29,155,209,.14);border-color:var(--accent)}
.msg-call.state-pending .msg-call-icon{background:var(--accent-dim);color:var(--accent)}
.msg-call.state-pending .msg-call-badge{background:var(--accent-dim);color:var(--accent)}
.msg-call.state-pending .msg-call-cta{background:var(--accent);color:#fff}

/* Active — in call */
.msg-call.state-active{background:rgba(46,182,125,.08);border-color:rgba(46,182,125,.35)}
.msg-call.state-active:hover{background:rgba(46,182,125,.14)}
.msg-call.state-active .msg-call-icon{background:rgba(46,182,125,.18);color:var(--success)}
.msg-call.state-active .msg-call-icon::after{
  content:'';position:absolute;inset:-4px;border-radius:14px;
  box-shadow:0 0 0 0 rgba(46,182,125,.45);animation:callPulse 1.6s infinite;
}
.msg-call.state-active .msg-call-badge{background:rgba(46,182,125,.2);color:var(--success)}
.msg-call.state-active .msg-call-cta{background:var(--success);color:#fff}
@keyframes callPulse{
  0%{box-shadow:0 0 0 0 rgba(46,182,125,.45)}
  70%{box-shadow:0 0 0 12px rgba(46,182,125,0)}
  100%{box-shadow:0 0 0 0 rgba(46,182,125,0)}
}

/* Expired */
.msg-call.state-expired{background:rgba(255,255,255,.03);border-color:var(--border);cursor:default;opacity:.7}
.msg-call.state-expired:hover{background:rgba(255,255,255,.03)}
.msg-call.state-expired .msg-call-icon{background:var(--bg-input);color:var(--text-muted)}
.msg-call.state-expired .msg-call-badge{background:var(--bg-input);color:var(--text-muted)}
.msg-call.state-expired .msg-call-title{color:var(--text-secondary);text-decoration:line-through;text-decoration-color:var(--text-muted)}
.msg-call.state-expired .msg-call-cta{display:none}

/* ===== Active call bar (voice, embedded iframe) ===== */
.call-active-bar{
  padding:10px 18px;background:rgba(46,182,125,.08);border:1px solid rgba(46,182,125,.3);
  border-radius:10px;margin:0 18px 6px;flex-shrink:0;
  display:flex;flex-direction:column;gap:0;
}
.call-active-bar.hidden{display:none}
.call-active-inner{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-strong)}
.call-pulse{width:10px;height:10px;border-radius:50%;background:var(--success);animation:pulse 1.2s infinite;flex-shrink:0}
.call-timer{margin-left:auto;font-family:ui-monospace,monospace;font-size:12px;color:var(--text-secondary)}
#call-iframe{
  width:1px;height:1px;opacity:0;pointer-events:none;
  border:0;position:absolute;bottom:0;right:0;
}
@media(max-width:768px){.call-active-bar{margin:0 8px 6px}}

/* Voice Player */
.msg-voice{display:inline-flex;align-items:center;gap:10px;padding:8px 14px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:20px;cursor:pointer;min-width:200px;margin-top:4px}
.msg-voice:hover{background:var(--bg-hover-strong)}
.msg-voice-btn{width:28px;height:28px;border-radius:50%;background:var(--accent);border:none;color:#fff;font-size:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.msg-voice-wave{flex:1;height:24px;display:flex;align-items:center;gap:1px}
.msg-voice-wave span{width:3px;background:var(--accent);border-radius:2px;opacity:.6}
.msg-voice-dur{font-size:12px;color:var(--text-muted);flex-shrink:0}

/* Help */
.help-btn{background:transparent;border:1px solid var(--border-strong);color:var(--text-secondary);padding:8px 16px;border-radius:6px;cursor:pointer;font-size:13px;margin-top:12px;transition:all .15s;width:100%;font-weight:600}
.help-btn:hover{border-color:var(--accent);color:var(--accent)}
.help-card{width:520px;max-height:80vh;overflow-y:auto}
.help-content{font-size:14px;line-height:1.7;color:var(--text-secondary)}
.help-title{font-size:14px;font-weight:900;color:var(--accent);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}
.help-step{display:flex;gap:12px;margin-bottom:14px;align-items:flex-start}
.help-num{width:24px;height:24px;border-radius:6px;background:var(--accent);color:#fff;font-size:12px;font-weight:900;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}
.help-step b{color:var(--text-strong)}
.help-step code{background:var(--bg-input);padding:1px 6px;border-radius:3px;font-size:13px;color:var(--accent);font-family:ui-monospace,monospace}
.help-item{padding:2px 0;color:var(--text-secondary)}
.help-divider{height:1px;background:var(--border);margin:14px 0}
.help-shortcut{display:flex;align-items:center;gap:8px;padding:5px 0;font-size:13px;color:var(--text-secondary)}
.help-shortcut>span{flex:1}
.help-shortcut kbd{
  background:var(--bg-input);border:1px solid var(--border-strong);border-bottom-width:2px;
  border-radius:4px;padding:2px 7px;font-size:11px;line-height:1.4;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  color:var(--text-strong);display:inline-block;min-width:20px;text-align:center;
}

/* ===== Mobile ===== */
@media(max-width:768px){
  :root{--members-w:78vw}
  body{font-size:14px}

  .app,.app.members-closed{grid-template-columns:1fr!important}

  .members-panel{
    display:block;position:fixed;top:0;right:0;bottom:0;
    width:var(--members-w);max-width:300px;z-index:401;
    transform:translateX(100%);transition:transform .25s cubic-bezier(.4,0,.2,1);
    box-shadow:-2px 0 20px rgba(0,0,0,.6);
  }
  .app.mobile-members-open .members-panel{transform:translateX(0)}
  .app.members-closed .members-panel{width:var(--members-w);max-width:300px}

  .top-nav{padding:0 6px;height:48px;gap:6px}
  .brand{display:none}
  .room-tab{padding:6px 10px;font-size:13px}
  .user-name{max-width:80px;font-size:12px}
  .top-action-btn{padding:4px 8px;font-size:12px}

  .chat-sub-header{padding:8px 12px}
  .chat-sub-header .room-title{font-size:14px}
  .chat-sub-header .room-id{max-width:100px;font-size:10px;padding:2px 5px}
  .invite-icon-btn{font-size:11px;padding:3px 8px}

  .message{padding:4px 10px;gap:8px}
  .message .msg-avatar{width:32px;height:32px;font-size:18px}
  .message .msg-content{font-size:14px}
  .message .msg-content img{max-width:100%;max-height:220px}
  .messages-area{padding:10px 0}
  .message .msg-actions{display:flex;opacity:0;pointer-events:none;transition:opacity .15s;top:-10px;right:6px}
  .message.show-actions .msg-actions{opacity:1;pointer-events:auto}
  .msg-action-btn{padding:5px 8px;font-size:15px}

  .chat-input-wrap{padding:0 8px 8px}
  .input-action-btn{width:32px;height:30px;font-size:15px}
  .chat-input-area textarea{font-size:16px;padding:10px 12px 2px;min-height:42px}
  .emoji-picker{left:8px;right:8px;width:auto;max-width:none}
  .emoji-grid{grid-template-columns:repeat(7,1fr)}
  .emoji-item{width:100%;height:36px;font-size:22px}

  .slash-popup{left:8px;right:8px;max-height:260px}
  .reply-preview{margin:0 8px 6px}
  .upload-loading{left:8px;right:8px}
  .voice-recording{padding:10px;margin:0 8px 6px}
  .voice-recording-inner{flex-wrap:wrap;justify-content:center;gap:8px}

  .modal-card{width:100%;max-width:420px;padding:22px 18px;border-radius:10px}
  .avatar-grid{grid-template-columns:repeat(4,1fr);gap:8px}
  .avatar-option{font-size:28px;border-radius:10px}
  .help-card{max-height:85vh}
  .form-group input[type="text"],.form-group input[type="password"]{font-size:16px;padding:11px 14px}

  .lobby-card{padding:22px 18px;border-radius:10px;max-height:92vh;overflow-y:auto}
  .lobby-card h1{font-size:22px}
  .lobby-avatar{width:64px;height:64px;font-size:32px}

  .panel-header{padding:14px}
  .member-item{padding:8px 10px}

  .toast-container{top:10px;left:10px;right:10px;align-items:center}
  .toast{max-width:none;width:100%}
}

@media(max-width:380px){
  .room-tab{padding:5px 8px;font-size:12px}
  .user-name{max-width:60px}
  .message{padding:4px 8px}
  .message .msg-avatar{width:30px;height:30px;font-size:16px}
  .emoji-grid{grid-template-columns:repeat(6,1fr)}
}