*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

:root{
  --bg-primary:#0a0a0f;
  --bg-secondary:#12121a;
  --bg-tertiary:#1a1a2e;
  --bg-glass:rgba(18,18,26,.72);
  --bg-glass-hover:rgba(26,26,46,.82);
  --bg-glass-border:rgba(255,255,255,.08);
  --text-primary:#f0f0f5;
  --text-secondary:#a0a0b8;
  --text-muted:#606078;
  --accent:#3b82f6;
  --accent-hover:#2563eb;
  --accent-glow:rgba(59,130,246,.25);
  --danger:#ef4444;
  --danger-hover:#dc2626;
  --success:#22c55e;
  --warning:#f59e0b;
  --radius-sm:6px;
  --radius-md:12px;
  --radius-lg:18px;
  --radius-xl:24px;
  --shadow-sm:0 2px 8px rgba(0,0,0,.3);
  --shadow-md:0 8px 32px rgba(0,0,0,.4);
  --shadow-lg:0 16px 64px rgba(0,0,0,.5);
  --transition-fast:.15s ease;
  --transition-normal:.25s ease;
  --transition-slow:.4s ease;
  --font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono','Fira Code',monospace;
  --taskbar-height:52px;
  --window-header:40px;
}

html,body{
  height:100%;
  font-family:var(--font-sans);
  background:var(--bg-primary);
  color:var(--text-primary);
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
}

a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-hover)}

button{
  font-family:inherit;
  cursor:pointer;
  border:none;
  outline:none;
}

input,textarea,select{
  font-family:inherit;
  outline:none;
  border:none;
}

::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.2)}

@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeInScale{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}
@keyframes slideUp{from{transform:translateY(100%)}to{transform:translateY(0)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
@keyframes spin{from{transform:rotate(0)}to{transform:rotate(360deg)}}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}

.auth-page{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:100vh;
  background:var(--bg-primary);
  position:relative;
  overflow:hidden;
}

.auth-bg{
  position:absolute;
  inset:0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%,rgba(59,130,246,.12),transparent),
    radial-gradient(ellipse 60% 50% at 80% 50%,rgba(139,92,246,.08),transparent),
    radial-gradient(ellipse 60% 50% at 20% 80%,rgba(59,130,246,.06),transparent);
  z-index:0;
}

.auth-card{
  position:relative;
  z-index:1;
  width:100%;
  max-width:420px;
  padding:40px;
  background:var(--bg-glass);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  border:1px solid var(--bg-glass-border);
  border-radius:var(--radius-xl);
  box-shadow:var(--shadow-lg);
  animation:fadeInScale .5s ease;
}

.auth-logo{
  text-align:center;
  margin-bottom:32px;
}

.auth-logo h1{
  font-size:28px;
  font-weight:700;
  letter-spacing:-.5px;
}

.auth-logo h1 span{
  color:var(--accent);
}

.auth-logo p{
  color:var(--text-secondary);
  font-size:14px;
  margin-top:6px;
}

.auth-form{
  display:flex;
  flex-direction:column;
  gap:16px;
}

.form-group{
  display:flex;
  flex-direction:column;
  gap:6px;
}

.form-group label{
  font-size:13px;
  font-weight:500;
  color:var(--text-secondary);
}

.form-group input{
  padding:12px 16px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--bg-glass-border);
  border-radius:var(--radius-md);
  color:var(--text-primary);
  font-size:14px;
  transition:border-color var(--transition-fast),box-shadow var(--transition-fast);
}

.form-group input:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-glow);
}

.form-group input::placeholder{
  color:var(--text-muted);
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--radius-md);
  font-size:14px;
  font-weight:600;
  transition:all var(--transition-fast);
}

.btn-primary{
  background:var(--accent);
  color:#fff;
}

.btn-primary:hover{
  background:var(--accent-hover);
  box-shadow:0 4px 20px var(--accent-glow);
}

.btn-primary:active{
  transform:scale(.97);
}

.btn-danger{
  background:var(--danger);
  color:#fff;
}

.btn-danger:hover{
  background:var(--danger-hover);
}

.btn-ghost{
  background:transparent;
  color:var(--text-secondary);
  padding:8px 16px;
}

.btn-ghost:hover{
  background:rgba(255,255,255,.06);
  color:var(--text-primary);
}

.btn-sm{
  padding:8px 14px;
  font-size:12px;
}

.btn-icon{
  width:34px;
  height:34px;
  padding:0;
  border-radius:var(--radius-sm);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,.06);
  color:var(--text-secondary);
  transition:all var(--transition-fast);
}

.btn-icon:hover{
  background:rgba(255,255,255,.1);
  color:var(--text-primary);
}

.btn:disabled{
  opacity:.5;
  pointer-events:none;
}

.auth-footer{
  text-align:center;
  margin-top:24px;
  font-size:13px;
  color:var(--text-secondary);
}

.auth-error{
  padding:10px 14px;
  background:rgba(239,68,68,.12);
  border:1px solid rgba(239,68,68,.25);
  border-radius:var(--radius-sm);
  color:#fca5a5;
  font-size:13px;
  display:none;
  animation:shake .4s ease;
}

.auth-error.visible{
  display:block;
}

.desktop{
  position:relative;
  width:100vw;
  height:100vh;
  overflow:hidden;
  background:var(--bg-primary);
}

.desktop-wallpaper{
  position:absolute;
  inset:0;
  background:
    radial-gradient(ellipse 120% 80% at 50% 0%,rgba(59,130,246,.1),transparent 60%),
    radial-gradient(ellipse 80% 100% at 100% 100%,rgba(139,92,246,.07),transparent 50%),
    radial-gradient(ellipse 80% 100% at 0% 50%,rgba(59,130,246,.05),transparent 50%),
    linear-gradient(180deg,#0a0a0f 0%,#0f0f1a 50%,#0a0a0f 100%);
  z-index:0;
}

.desktop-wallpaper::before{
  content:'';
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(circle at 20% 30%,rgba(59,130,246,.04) 1px,transparent 1px),
    radial-gradient(circle at 80% 70%,rgba(139,92,246,.03) 1px,transparent 1px);
  background-size:60px 60px,80px 80px;
}

.desktop-icons{
  position:absolute;
  top:24px;
  left:24px;
  display:flex;
  flex-direction:column;
  gap:8px;
  z-index:1;
}

.desktop-icon{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:6px;
  width:80px;
  padding:12px 8px;
  border-radius:var(--radius-md);
  cursor:pointer;
  transition:all var(--transition-fast);
  user-select:none;
}

.desktop-icon:hover{
  background:rgba(255,255,255,.06);
}

.desktop-icon:active{
  transform:scale(.94);
}

.desktop-icon .icon{
  width:48px;
  height:48px;
  border-radius:var(--radius-md);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:24px;
  background:var(--bg-glass);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--bg-glass-border);
  transition:all var(--transition-fast);
}

.desktop-icon:hover .icon{
  border-color:rgba(255,255,255,.15);
  transform:translateY(-2px);
  box-shadow:0 6px 24px rgba(0,0,0,.3);
}

.desktop-icon .label{
  font-size:11px;
  font-weight:500;
  color:var(--text-secondary);
  text-align:center;
  text-shadow:0 1px 3px rgba(0,0,0,.8);
}

.icon-notes{background:linear-gradient(135deg,#f59e0b22,#f59e0b08)}
.icon-files{background:linear-gradient(135deg,#3b82f622,#3b82f608)}
.icon-ai{background:linear-gradient(135deg,#8b5cf622,#8b5cf608)}
.icon-admin{background:linear-gradient(135deg,#22c55e22,#22c55e08)}

.taskbar{
  position:absolute;
  bottom:0;
  left:0;
  right:0;
  height:var(--taskbar-height);
  background:rgba(10,10,15,.85);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  border-top:1px solid var(--bg-glass-border);
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  z-index:1000;
  animation:slideUp .4s ease;
}

.taskbar-left{
  display:flex;
  align-items:center;
  gap:4px;
}

.taskbar-start{
  width:36px;
  height:36px;
  border-radius:var(--radius-sm);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  cursor:pointer;
  transition:all var(--transition-fast);
  color:var(--accent);
}

.taskbar-start:hover{
  background:rgba(255,255,255,.08);
}

.taskbar-apps{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:8px;
}

.taskbar-app{
  height:36px;
  padding:0 14px;
  border-radius:var(--radius-sm);
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:500;
  color:var(--text-secondary);
  cursor:pointer;
  transition:all var(--transition-fast);
  position:relative;
}

.taskbar-app:hover{
  background:rgba(255,255,255,.06);
  color:var(--text-primary);
}

.taskbar-app.active{
  color:var(--text-primary);
}

.taskbar-app.active::after{
  content:'';
  position:absolute;
  bottom:2px;
  left:50%;
  transform:translateX(-50%);
  width:16px;
  height:2px;
  background:var(--accent);
  border-radius:1px;
}

.taskbar-app .app-emoji{
  font-size:15px;
}

.taskbar-right{
  display:flex;
  align-items:center;
  gap:12px;
}

.taskbar-user{
  display:flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border-radius:var(--radius-sm);
  cursor:pointer;
  transition:all var(--transition-fast);
}

.taskbar-user:hover{
  background:rgba(255,255,255,.06);
}

.taskbar-user .avatar{
  width:24px;
  height:24px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--accent),#8b5cf6);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:11px;
  font-weight:700;
  color:#fff;
}

.taskbar-user .name{
  font-size:12px;
  font-weight:500;
  color:var(--text-secondary);
}

.taskbar-clock{
  font-size:12px;
  font-weight:500;
  color:var(--text-secondary);
  font-variant-numeric:tabular-nums;
  min-width:52px;
  text-align:right;
}

.taskbar-clock .date{
  font-size:10px;
  color:var(--text-muted);
}

.user-menu{
  position:absolute;
  bottom:calc(var(--taskbar-height) + 8px);
  right:16px;
  width:200px;
  background:var(--bg-glass);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  border:1px solid var(--bg-glass-border);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-lg);
  padding:6px;
  z-index:1001;
  display:none;
  animation:fadeInScale .15s ease;
}

.user-menu.visible{
  display:block;
}

.user-menu-item{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:var(--radius-sm);
  font-size:13px;
  color:var(--text-secondary);
  cursor:pointer;
  transition:all var(--transition-fast);
}

.user-menu-item:hover{
  background:rgba(255,255,255,.06);
  color:var(--text-primary);
}

.user-menu-item.danger{
  color:var(--danger);
}

.user-menu-item.danger:hover{
  background:rgba(239,68,68,.1);
}

.os-window{
  position:absolute;
  min-width:400px;
  min-height:300px;
  background:var(--bg-glass);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  border:1px solid var(--bg-glass-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);
  display:flex;
  flex-direction:column;
  overflow:hidden;
  animation:fadeInScale .2s ease;
  transition:box-shadow var(--transition-fast);
}

.os-window.focused{
  z-index:100;
  border-color:rgba(255,255,255,.12);
  box-shadow:0 20px 80px rgba(0,0,0,.5);
}

.os-window.minimized{
  display:none;
}

.window-header{
  height:var(--window-header);
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 12px 0 16px;
  background:rgba(255,255,255,.03);
  border-bottom:1px solid var(--bg-glass-border);
  cursor:grab;
  user-select:none;
  flex-shrink:0;
}

.window-header:active{
  cursor:grabbing;
}

.window-title{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
}

.window-title .emoji{
  font-size:15px;
}

.window-controls{
  display:flex;
  align-items:center;
  gap:2px;
}

.window-control{
  width:28px;
  height:28px;
  border-radius:var(--radius-sm);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  color:var(--text-muted);
  cursor:pointer;
  transition:all var(--transition-fast);
}

.window-control:hover{
  background:rgba(255,255,255,.08);
  color:var(--text-primary);
}

.window-control.close:hover{
  background:rgba(239,68,68,.2);
  color:var(--danger);
}

.window-body{
  flex:1;
  overflow:auto;
  padding:16px;
}

.notes-toolbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:16px;
  gap:12px;
}

.notes-search{
  flex:1;
  max-width:280px;
  padding:8px 14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--bg-glass-border);
  border-radius:var(--radius-sm);
  color:var(--text-primary);
  font-size:13px;
}

.notes-search:focus{
  border-color:var(--accent);
}

.notes-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(200px,1fr));
  gap:12px;
}

.note-card{
  padding:16px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--bg-glass-border);
  border-radius:var(--radius-md);
  cursor:pointer;
  transition:all var(--transition-fast);
  position:relative;
}

.note-card:hover{
  background:rgba(255,255,255,.06);
  border-color:rgba(255,255,255,.12);
  transform:translateY(-1px);
}

.note-card h3{
  font-size:14px;
  font-weight:600;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
}

.note-card p{
  font-size:12px;
  color:var(--text-secondary);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
  line-height:1.5;
}

.note-card .note-date{
  font-size:10px;
  color:var(--text-muted);
  margin-top:10px;
}

.note-card .note-actions{
  position:absolute;
  top:8px;
  right:8px;
  display:flex;
  gap:4px;
  opacity:0;
  transition:opacity var(--transition-fast);
}

.note-card:hover .note-actions{
  opacity:1;
}

.note-editor{
  display:none;
  flex-direction:column;
  gap:12px;
  height:100%;
}

.note-editor.active{
  display:flex;
}

.note-editor-title{
  padding:10px 14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--bg-glass-border);
  border-radius:var(--radius-sm);
  color:var(--text-primary);
  font-size:16px;
  font-weight:600;
}

.note-editor-title:focus{
  border-color:var(--accent);
}

.note-editor-content{
  flex:1;
  min-height:200px;
  padding:14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--bg-glass-border);
  border-radius:var(--radius-sm);
  color:var(--text-primary);
  font-size:13px;
  line-height:1.6;
  resize:none;
}

.note-editor-content:focus{
  border-color:var(--accent);
}

.note-editor-actions{
  display:flex;
  justify-content:flex-end;
  gap:8px;
}

.notes-list-view{
  display:flex;
  flex-direction:column;
  height:100%;
}

.notes-pagination{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  margin-top:16px;
  padding-top:12px;
  border-top:1px solid var(--bg-glass-border);
}

.notes-pagination span{
  font-size:12px;
  color:var(--text-secondary);
}

.files-toolbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:16px;
  gap:12px;
}

.file-upload-zone{
  display:none;
  padding:32px;
  border:2px dashed var(--bg-glass-border);
  border-radius:var(--radius-md);
  text-align:center;
  margin-bottom:16px;
  cursor:pointer;
  transition:all var(--transition-fast);
}

.file-upload-zone.visible{
  display:block;
}

.file-upload-zone:hover,
.file-upload-zone.dragover{
  border-color:var(--accent);
  background:rgba(59,130,246,.05);
}

.file-upload-zone .upload-icon{
  font-size:36px;
  margin-bottom:8px;
}

.file-upload-zone p{
  font-size:13px;
  color:var(--text-secondary);
}

.file-upload-zone .upload-hint{
  font-size:11px;
  color:var(--text-muted);
  margin-top:4px;
}

.files-list{
  display:flex;
  flex-direction:column;
  gap:4px;
}

.file-item{
  display:flex;
  align-items:center;
  gap:12px;
  padding:10px 14px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--bg-glass-border);
  border-radius:var(--radius-sm);
  transition:all var(--transition-fast);
}

.file-item:hover{
  background:rgba(255,255,255,.06);
}

.file-item .file-icon{
  font-size:22px;
  width:36px;
  height:36px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--radius-sm);
  background:rgba(59,130,246,.08);
  flex-shrink:0;
}

.file-item .file-info{
  flex:1;
  min-width:0;
}

.file-item .file-name{
  font-size:13px;
  font-weight:500;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.file-item .file-meta{
  font-size:11px;
  color:var(--text-muted);
  margin-top:2px;
}

.file-item .file-actions{
  display:flex;
  gap:4px;
  opacity:0;
  transition:opacity var(--transition-fast);
}

.file-item:hover .file-actions{
  opacity:1;
}

.chat-container{
  display:flex;
  flex-direction:column;
  height:100%;
}

.chat-messages{
  flex:1;
  overflow-y:auto;
  padding:4px 0;
  display:flex;
  flex-direction:column;
  gap:12px;
}

.chat-message{
  display:flex;
  gap:10px;
  animation:fadeInUp .2s ease;
}

.chat-message.user{
  flex-direction:row-reverse;
}

.chat-avatar{
  width:30px;
  height:30px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  flex-shrink:0;
}

.chat-message.assistant .chat-avatar{
  background:linear-gradient(135deg,#8b5cf6,#3b82f6);
}

.chat-message.user .chat-avatar{
  background:linear-gradient(135deg,var(--accent),#06b6d4);
}

.chat-bubble{
  max-width:75%;
  padding:10px 14px;
  border-radius:var(--radius-md);
  font-size:13px;
  line-height:1.6;
}

.chat-message.assistant .chat-bubble{
  background:rgba(255,255,255,.05);
  border:1px solid var(--bg-glass-border);
  border-top-left-radius:4px;
}

.chat-message.user .chat-bubble{
  background:rgba(59,130,246,.15);
  border:1px solid rgba(59,130,246,.25);
  border-top-right-radius:4px;
}

.chat-input-area{
  display:flex;
  gap:8px;
  padding-top:12px;
  border-top:1px solid var(--bg-glass-border);
  margin-top:12px;
}

.chat-input{
  flex:1;
  padding:10px 14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--bg-glass-border);
  border-radius:var(--radius-md);
  color:var(--text-primary);
  font-size:13px;
  resize:none;
  max-height:100px;
}

.chat-input:focus{
  border-color:var(--accent);
}

.chat-send{
  width:40px;
  height:40px;
  border-radius:var(--radius-md);
  background:var(--accent);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  transition:all var(--transition-fast);
  flex-shrink:0;
  align-self:flex-end;
}

.chat-send:hover{
  background:var(--accent-hover);
  box-shadow:0 4px 16px var(--accent-glow);
}

.chat-send:disabled{
  opacity:.4;
  pointer-events:none;
}

.chat-typing{
  display:flex;
  gap:4px;
  padding:8px 14px;
}

.chat-typing span{
  width:6px;
  height:6px;
  background:var(--text-muted);
  border-radius:50%;
  animation:pulse 1.2s infinite;
}

.chat-typing span:nth-child(2){animation-delay:.2s}
.chat-typing span:nth-child(3){animation-delay:.4s}

.admin-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:14px;
}

.admin-stat{
  padding:20px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--bg-glass-border);
  border-radius:var(--radius-md);
  text-align:center;
  transition:all var(--transition-fast);
}

.admin-stat:hover{
  background:rgba(255,255,255,.06);
  transform:translateY(-2px);
}

.admin-stat .stat-icon{
  font-size:28px;
  margin-bottom:10px;
}

.admin-stat .stat-value{
  font-size:28px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}

.admin-stat .stat-label{
  font-size:12px;
  color:var(--text-secondary);
  margin-top:4px;
}

.admin-refresh{
  margin-top:16px;
  text-align:center;
}

.toast-container{
  position:fixed;
  top:20px;
  right:20px;
  z-index:9999;
  display:flex;
  flex-direction:column;
  gap:8px;
  pointer-events:none;
}

.toast{
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 18px;
  background:var(--bg-glass);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  border:1px solid var(--bg-glass-border);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-md);
  font-size:13px;
  color:var(--text-primary);
  pointer-events:all;
  animation:fadeInUp .25s ease;
  max-width:360px;
}

.toast.success{border-left:3px solid var(--success)}
.toast.error{border-left:3px solid var(--danger)}
.toast.info{border-left:3px solid var(--accent)}
.toast.warning{border-left:3px solid var(--warning)}

.toast .toast-icon{font-size:16px}

.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  padding:40px 20px;
  text-align:center;
}

.empty-state .empty-icon{
  font-size:48px;
  margin-bottom:16px;
  opacity:.5;
}

.empty-state h3{
  font-size:16px;
  font-weight:600;
  margin-bottom:6px;
}

.empty-state p{
  font-size:13px;
  color:var(--text-secondary);
  max-width:260px;
}

.loader{
  width:20px;
  height:20px;
  border:2px solid var(--bg-glass-border);
  border-top-color:var(--accent);
  border-radius:50%;
  animation:spin .6s linear infinite;
}

.loader-center{
  display:flex;
  align-items:center;
  justify-content:center;
  padding:40px;
}

.hidden{display:none!important}

@media(max-width:768px){
  .auth-card{
    margin:16px;
    padding:28px 24px;
  }

  .desktop-icons{
    top:16px;
    left:12px;
    flex-direction:row;
    flex-wrap:wrap;
    gap:4px;
  }

  .desktop-icon{
    width:70px;
    padding:10px 6px;
  }

  .desktop-icon .icon{
    width:42px;
    height:42px;
    font-size:20px;
  }

  .os-window{
    min-width:unset;
    width:calc(100vw - 16px)!important;
    height:calc(100vh - var(--taskbar-height) - 24px)!important;
    left:8px!important;
    top:8px!important;
    border-radius:var(--radius-md);
  }

  .taskbar{
    padding:0 10px;
  }

  .taskbar-app span:not(.app-emoji){
    display:none;
  }

  .taskbar-user .name{
    display:none;
  }

  .notes-grid{
    grid-template-columns:1fr;
  }

  .admin-grid{
    grid-template-columns:1fr 1fr;
  }

  .chat-bubble{
    max-width:85%;
  }
}

@media(max-width:480px){
  .admin-grid{
    grid-template-columns:1fr;
  }

  .taskbar-start{
    display:none;
  }
}