*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0f1117;--bg2:#1a1d27;--bg3:#252836;--bg4:#2d3142;
  --text:#e4e6eb;--text2:#9ca3af;--text3:#6b7280;
  --primary:#6366f1;--primary-hover:#818cf8;--primary-bg:rgba(99,102,241,0.15);
  --success:#22c55e;--success-bg:rgba(34,197,94,0.15);
  --warning:#f59e0b;--warning-bg:rgba(245,158,11,0.15);
  --danger:#ef4444;--danger-bg:rgba(239,68,68,0.15);
  --info:#3b82f6;--info-bg:rgba(59,130,246,0.15);
  --border:rgba(255,255,255,0.06);
  --radius:12px;--radius-sm:8px;--radius-xs:6px;
  --shadow:0 1px 3px rgba(0,0,0,0.3),0 1px 2px rgba(0,0,0,0.2);
  --shadow-lg:0 10px 40px rgba(0,0,0,0.4);
  --transition:0.2s ease;
}

body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;
  -webkit-font-smoothing:antialiased;
}

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

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--bg3);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--bg4)}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border:none;border-radius:var(--radius-sm);
  font-size:14px;font-weight:500;cursor:pointer;transition:all var(--transition);
  white-space:nowrap;font-family:inherit;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{opacity:0.9}
.btn-success{background:var(--success);color:#fff}
.btn-success:hover{opacity:0.9}
.btn-warning{background:var(--warning);color:#111}
.btn-warning:hover{opacity:0.9}
.btn-outline{
  background:transparent;border:1px solid var(--border);color:var(--text);
}
.btn-outline:hover{background:var(--bg3);border-color:var(--text3)}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-sm svg{width:15px;height:15px}
.btn-lg{padding:14px 28px;font-size:16px}
.btn-icon{padding:8px;border-radius:var(--radius-xs)}
.btn:disabled{opacity:0.5;cursor:not-allowed;transform:none}

/* ===== INPUTS ===== */
.input-group{margin-bottom:16px}
.input-group label{
  display:block;margin-bottom:6px;font-size:13px;font-weight:500;color:var(--text2);
}
.input{
  width:100%;padding:10px 14px;
  background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);
  color:var(--text);font-size:14px;font-family:inherit;transition:all var(--transition);
  outline:none;
}
.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-bg)}
.input::placeholder{color:var(--text3)}
select.input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%236b7280' viewBox='0 0 16 16'%3E%3Cpath d='M4.646 5.646a.5.5 0 01.708 0L8 8.293l2.646-2.647a.5.5 0 01.708.708l-3 3a.5.5 0 01-.708 0l-3-3a.5.5 0 010-.708z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;padding-right:36px}
textarea.input{resize:vertical;min-height:80px}

/* ===== CHECKBOX ===== */
.checkbox-label{
  display:flex;align-items:center;gap:8px;cursor:pointer;font-size:14px;color:var(--text2);
}
.checkbox-label input[type="checkbox"]{
  width:16px;height:16px;accent-color:var(--primary);
}

/* ===== CARDS ===== */
.card{
  background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;
}
.card-header{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:16px;border-bottom:1px solid var(--border);margin-bottom:16px;
}
.card-title{font-size:16px;font-weight:600}

/* ===== MODAL ===== */
.modal-overlay{
  display:none;position:fixed;top:0;left:0;width:100%;height:100%;
  background:rgba(0,0,0,0.6);backdrop-filter:blur(4px);
  z-index:1000;align-items:center;justify-content:center;
}
.modal-overlay.active{display:flex}
.modal{
  background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;width:90%;max-width:520px;max-height:85vh;overflow-y:auto;
  box-shadow:var(--shadow-lg);animation:modalIn 0.2s ease;
}
@keyframes modalIn{from{opacity:0;transform:scale(0.95) translateY(-10px)}to{opacity:1;transform:scale(1) translateY(0)}}
.modal h3{font-size:18px;font-weight:600;margin-bottom:20px}
.modal-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:20px}

/* ===== LAYOUT ===== */
.layout{display:flex;min-height:100vh}
.sidebar{
  width:260px;background:var(--bg2);border-right:1px solid var(--border);
  display:flex;flex-direction:column;flex-shrink:0;position:fixed;top:0;left:0;
  height:100vh;z-index:100;transition:transform var(--transition);
}
.sidebar-logo{
  padding:20px 24px;display:flex;align-items:center;gap:12px;
  border-bottom:1px solid var(--border);
}
.sidebar-logo svg{width:32px;height:32px;color:var(--primary)}
.sidebar-logo span{font-size:20px;font-weight:700;color:var(--text)}
.sidebar-nav{flex:1;padding:12px;overflow-y:auto}
.sidebar-nav a{
  display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:var(--radius-sm);
  color:var(--text2);font-size:14px;font-weight:500;transition:all var(--transition);margin-bottom:4px;
}
.sidebar-nav a svg{width:20px;height:20px;flex-shrink:0}
.sidebar-nav a:hover{background:var(--bg3);color:var(--text)}
.sidebar-nav a.active{background:var(--primary-bg);color:var(--primary)}
.sidebar-user{
  padding:16px 20px;border-top:1px solid var(--border);
  display:flex;align-items:center;gap:12px;
}
.sidebar-user .avatar{
  width:36px;height:36px;border-radius:50%;background:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;color:#fff;
}
.sidebar-user .info{flex:1;min-width:0}
.sidebar-user .name{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sidebar-user .role{font-size:12px;color:var(--text3)}

.main{
  flex:1;margin-left:260px;padding:24px;min-height:100vh;display:flex;flex-direction:column;
}
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:24px;margin-bottom:24px;border-bottom:1px solid var(--border);
}
.topbar h1{font-size:22px;font-weight:700}
.topbar-actions{display:flex;align-items:center;gap:12px}

/* ===== AUTH PAGE ===== */
.auth-page{
  display:flex;align-items:center;justify-content:center;min-height:100vh;
  padding:20px;background:var(--bg);
  background-image:radial-gradient(ellipse at 50% 0%,var(--primary-bg) 0%,transparent 60%);
}
.auth-card{
  background:var(--bg2);border:1px solid var(--border);border-radius:16px;
  padding:40px;width:100%;max-width:440px;box-shadow:var(--shadow-lg);
}
.auth-card .logo{
  display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:32px;
}
.auth-card .logo svg{width:40px;height:40px;color:var(--primary)}
.auth-card .logo span{font-size:24px;font-weight:700}
.auth-tabs{display:flex;margin-bottom:28px;border-bottom:2px solid var(--border)}
.auth-tabs button{
  flex:1;padding:10px;border:none;background:none;color:var(--text2);
  font-size:15px;font-weight:500;cursor:pointer;font-family:inherit;
  border-bottom:2px solid transparent;margin-bottom:-2px;transition:all var(--transition);
}
.auth-tabs button.active{color:var(--primary);border-bottom-color:var(--primary)}

/* ===== STORAGE BAR ===== */
.storage-bar{
  margin-bottom:24px;padding:16px 20px;background:var(--bg2);
  border:1px solid var(--border);border-radius:var(--radius);
}
.storage-bar .info{display:flex;justify-content:space-between;margin-bottom:8px;font-size:13px;color:var(--text2)}
.storage-bar .bar{
  height:8px;background:var(--bg3);border-radius:4px;overflow:hidden;
}
.storage-bar .bar-fill{
  height:100%;background:linear-gradient(90deg,var(--primary),var(--info));
  border-radius:4px;transition:width 0.5s ease;
}

/* ===== TOOLBAR ===== */
.toolbar{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;
  gap:12px;margin-bottom:20px;
}
.toolbar-left,.toolbar-right{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.search-box{
  position:relative;
}
.search-box svg{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--text3);
}
.search-box input{
  padding:9px 14px 9px 38px;background:var(--bg2);border:1px solid var(--border);
  border-radius:var(--radius-sm);color:var(--text);font-size:14px;outline:none;width:240px;transition:all var(--transition);
}
.search-box input:focus{border-color:var(--primary);width:300px}

/* ===== BREADCRUMB ===== */
.breadcrumb{
  display:flex;align-items:center;gap:6px;margin-bottom:16px;font-size:13px;color:var(--text2);flex-wrap:wrap;
}
.breadcrumb a{color:var(--text2);padding:3px 8px;border-radius:4px;transition:all var(--transition)}
.breadcrumb a:hover{background:var(--bg3);color:var(--text)}
.breadcrumb svg{width:14px;height:14px;color:var(--text3)}

/* ===== TABLE / FILE LIST ===== */
.file-table{width:100%;border-collapse:collapse}
.file-table th{
  text-align:left;padding:10px 14px;font-size:12px;font-weight:600;
  text-transform:uppercase;letter-spacing:0.5px;color:var(--text3);
  border-bottom:1px solid var(--border);
}
.file-table td{padding:10px 14px;font-size:14px;border-bottom:1px solid var(--border)}
.file-table tr:hover td{background:rgba(255,255,255,0.02)}
.file-table tr.selected td{background:var(--primary-bg)}
.file-table .file-name{
  display:flex;align-items:center;gap:10px;cursor:pointer;
}
.file-table .file-name svg{width:22px;height:22px;flex-shrink:0}
.file-table .file-name .type-folder{color:var(--warning)}
.file-table .file-name .type-image{color:var(--success)}
.file-table .file-name .type-video{color:var(--danger)}
.file-table .file-name .type-doc{color:var(--info)}
.file-table .file-name .type-archive{color:var(--text2)}
.file-table .file-name .type-code{color:var(--primary)}
.file-table .file-name span{max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-table .actions{display:flex;gap:4px}
.file-check{width:16px;height:16px;accent-color:var(--primary)}

/* ===== DATA TABLE (ADMIN) ===== */
.data-table{width:100%;border-collapse:collapse}
.data-table th{
  text-align:left;padding:12px 16px;font-size:12px;font-weight:600;
  text-transform:uppercase;letter-spacing:0.5px;color:var(--text3);
  background:var(--bg);border-bottom:1px solid var(--border);
}
.data-table td{padding:12px 16px;font-size:14px;border-bottom:1px solid var(--border)}
.data-table tr:hover td{background:rgba(255,255,255,0.02)}

/* ===== BADGES ===== */
.badge{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:20px;
  font-size:12px;font-weight:500;
}
.badge-success{background:var(--success-bg);color:var(--success)}
.badge-danger{background:var(--danger-bg);color:var(--danger)}
.badge-warning{background:var(--warning-bg);color:var(--warning)}
.badge-info{background:var(--info-bg);color:var(--info)}
.badge-primary{background:var(--primary-bg);color:var(--primary)}

/* ===== STATS CARDS ===== */
.stats-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
  gap:16px;margin-bottom:24px;
}
.stat-card{
  background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;display:flex;align-items:center;gap:16px;
}
.stat-card .icon{
  width:48px;height:48px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.stat-card .icon svg{width:24px;height:24px}
.stat-card .info{}
.stat-card .value{font-size:24px;font-weight:700;line-height:1.2}
.stat-card .label{font-size:13px;color:var(--text2);margin-top:4px}

/* ===== TABS ===== */
.tabs{display:flex;gap:0;margin-bottom:20px;border-bottom:2px solid var(--border)}
.tab-btn{
  padding:10px 20px;background:none;border:none;color:var(--text2);
  font-size:14px;font-weight:500;cursor:pointer;font-family:inherit;
  border-bottom:2px solid transparent;margin-bottom:-2px;transition:all var(--transition);
}
.tab-btn:hover{color:var(--text)}
.tab-btn.active{color:var(--primary);border-bottom-color:var(--primary)}

.tab-content{display:none}
.tab-content.active{display:block}

/* ===== TOAST ===== */
.toast-container{position:fixed;top:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:8px}
.toast{
  padding:14px 20px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;
  box-shadow:var(--shadow-lg);animation:toastIn 0.3s ease;
  display:flex;align-items:center;gap:10px;min-width:280px;max-width:420px;
}
.toast-success{background:var(--success);color:#fff}
.toast-error{background:var(--danger);color:#fff}
.toast-info{background:var(--info);color:#fff}
.toast-warning{background:var(--warning);color:#111}
@keyframes toastIn{from{opacity:0;transform:translateX(100%)}to{opacity:1;transform:translateX(0)}}
.toast svg{width:18px;height:18px;flex-shrink:0}

/* ===== DROPDOWN ===== */
.dropdown{position:relative;display:inline-block}
.dropdown-menu{
  display:none;position:absolute;right:0;top:100%;margin-top:4px;
  background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);
  box-shadow:var(--shadow-lg);z-index:200;min-width:160px;padding:8px;
}
.dropdown-menu.active{display:block}
.dropdown-menu a,.dropdown-menu button{
  display:flex;align-items:center;gap:8px;width:100%;padding:8px 12px;
  border:none;background:none;color:var(--text);font-size:14px;cursor:pointer;
  border-radius:var(--radius-xs);text-align:left;font-family:inherit;transition:all var(--transition);
}
.dropdown-menu a:hover,.dropdown-menu button:hover{background:var(--bg3)}
.dropdown-menu a svg,.dropdown-menu button svg{width:16px;height:16px;flex-shrink:0}
.dropdown-menu .danger{color:var(--danger)}

/* ===== PAGINATION ===== */
.pagination{
  display:flex;align-items:center;justify-content:center;gap:8px;margin-top:20px;
}
.pagination button{
  padding:8px 14px;background:var(--bg2);border:1px solid var(--border);
  border-radius:var(--radius-xs);color:var(--text);font-size:14px;cursor:pointer;
  font-family:inherit;transition:all var(--transition);
}
.pagination button:hover{background:var(--bg3)}
.pagination button.active{background:var(--primary);border-color:var(--primary);color:#fff}
.pagination button:disabled{opacity:0.4;cursor:not-allowed}
.pagination .page-info{font-size:13px;color:var(--text3);padding:0 8px}

/* ===== EMPTY STATE ===== */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:60px 20px;color:var(--text3);
}
.empty-state svg{width:64px;height:64px;margin-bottom:16px;opacity:0.4}
.empty-state h3{font-size:16px;color:var(--text2);margin-bottom:8px}
.empty-state p{font-size:14px;text-align:center;max-width:300px;margin-bottom:16px}

/* ===== SPINNER ===== */
.spinner{
  width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--primary);
  border-radius:50%;animation:spin 0.6s linear infinite;display:inline-block;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== UPLOAD ZONE ===== */
.upload-zone{
  border:2px dashed var(--border);border-radius:var(--radius);padding:40px;
  text-align:center;cursor:pointer;transition:all var(--transition);
  background:var(--bg2);margin-bottom:16px;
}
.upload-zone:hover,.upload-zone.drag-over{border-color:var(--primary);background:var(--primary-bg)}
.upload-zone svg{width:48px;height:48px;color:var(--text3);margin-bottom:12px}
.upload-zone p{color:var(--text2);font-size:14px}
.upload-zone .small{color:var(--text3);font-size:12px;margin-top:4px}
.upload-progress{margin-top:12px}
.upload-progress .item{
  display:flex;align-items:center;justify-content:space-between;padding:8px 0;
  font-size:13px;
}
.upload-progress .bar{
  flex:1;height:4px;background:var(--bg3);border-radius:2px;margin:0 12px;overflow:hidden;
}
.upload-progress .bar-fill{height:100%;background:var(--primary);border-radius:2px;transition:width 0.3s ease}

/* ===== SHARE PAGE ===== */
.share-page{
  display:flex;align-items:center;justify-content:center;min-height:100vh;
  padding:20px;
}
.share-card{
  background:var(--bg2);border:1px solid var(--border);border-radius:16px;
  padding:40px;width:100%;max-width:480px;box-shadow:var(--shadow-lg);text-align:center;
}
.share-card .file-icon svg{width:72px;height:72px;color:var(--primary);margin-bottom:20px}
.share-card h2{font-size:20px;margin-bottom:8px}
.share-card .meta{color:var(--text2);font-size:14px;margin-bottom:24px}

/* ===== CONTEXT MENU ===== */
.context-menu{
  display:none;position:fixed;z-index:999;
  background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);
  box-shadow:var(--shadow-lg);padding:8px;min-width:180px;
}
.context-menu.active{display:block}
.context-menu button,.context-menu a{
  display:flex;align-items:center;gap:8px;width:100%;padding:8px 12px;
  border:none;background:none;color:var(--text);font-size:14px;cursor:pointer;
  border-radius:var(--radius-xs);text-align:left;font-family:inherit;transition:all var(--transition);
}
.context-menu button:hover,.context-menu a:hover{background:var(--bg3)}
.context-menu button svg,.context-menu a svg{width:16px;height:16px;flex-shrink:0}
.context-menu hr{border:none;border-top:1px solid var(--border);margin:4px 0}
.context-menu .danger{color:var(--danger)}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
  .sidebar{
    transform:translateX(-100%);z-index:200;box-shadow:var(--shadow-lg);
    transition:transform 0.3s ease;
  }
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0;padding:12px}
  .topbar{flex-wrap:wrap;gap:12px;padding-bottom:12px;margin-bottom:12px}
  .topbar h1{font-size:18px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:8px}
  .stat-card{padding:14px;gap:10px}
  .stat-card .icon{width:36px;height:36px}
  .stat-card .icon svg{width:18px;height:18px}
  .stat-card .value{font-size:18px}
  .stat-card .label{font-size:11px}
  .toolbar{flex-direction:column;align-items:stretch;gap:8px}
  .toolbar-left,.toolbar-right{flex-wrap:wrap;gap:6px}
  .search-box{flex:1}
  .search-box input{width:100%}
  .search-box input:focus{width:100%}
  .file-table,.data-table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .file-table th,.file-table td,.data-table th,.data-table td{white-space:nowrap;padding:8px 10px;font-size:13px}
  .file-table .file-name span{max-width:120px}
  .file-table th:nth-child(3),.file-table td:nth-child(3),
  .file-table th:nth-child(4),.file-table td:nth-child(4){display:none}
  .btn{padding:8px 14px;font-size:13px}
  .btn-sm{padding:5px 10px;font-size:12px}
  .card{padding:16px}
  .modal{width:95%;padding:20px;max-width:none}
  .auth-card{padding:28px 20px;max-width:100%}
  .auth-card .logo svg{width:32px;height:32px}
  .auth-card .logo span{font-size:20px}
  .data-table th:nth-child(5),.data-table td:nth-child(5),
  .data-table th:nth-child(6),.data-table td:nth-child(6){display:none}
  .storage-bar{padding:12px 14px}
  .storage-bar .info{font-size:11px}
  .pagination button{padding:6px 10px;font-size:12px}
  .empty-state{padding:40px 16px}
  .code-block{font-size:11px;padding:10px 12px}
  .upload-zone{padding:24px 16px}
  #menuToggle{display:inline-flex!important}
}

@media(max-width:480px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .file-table th:nth-child(5),.file-table td:nth-child(5){display:none}
  .data-table th:nth-child(4),.data-table td:nth-child(4),
  .data-table th:nth-child(7),.data-table td:nth-child(7){display:none}
  .file-table .file-name span{max-width:80px}
  .toolbar .btn{font-size:12px;padding:7px 10px}
  .tabs .tab-btn{padding:8px 12px;font-size:12px}
  .auth-tabs button{font-size:14px;padding:8px}
}

/* ===== FILE NAME TRUNCATION ===== */
.file-table .file-name span,.data-table td{
  max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:middle;
}
.file-table .file-name{max-width:100%}
.data-table td code{
  max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:middle;
}

/* ===== HIGHLIGHT CODE DISPLAY ===== */
.code-block{
  background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:12px 16px;font-family:'Fira Code','Consolas',monospace;font-size:13px;color:var(--success);word-break:break-all;
  user-select:all;cursor:text;margin:8px 0;
}

/* ===== TOGGLE SWITCH ===== */
.toggle{
  position:relative;display:inline-block;width:44px;height:24px;
}
.toggle input{opacity:0;width:0;height:0}
.toggle .slider{
  position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;
  background:var(--bg3);border-radius:24px;transition:all var(--transition);
}
.toggle .slider::before{
  content:'';position:absolute;height:18px;width:18px;left:3px;bottom:3px;
  background:#fff;border-radius:50%;transition:all var(--transition);
}
.toggle input:checked+.slider{background:var(--primary)}
.toggle input:checked+.slider::before{transform:translateX(20px)}

/* ===== COPY BUTTON ===== */
.copy-btn{
  padding:4px 10px;background:var(--bg3);border:1px solid var(--border);border-radius:4px;
  color:var(--text2);font-size:12px;cursor:pointer;transition:all var(--transition);
}
.copy-btn:hover{background:var(--bg4);color:var(--text)}
.copy-btn.copied{background:var(--success-bg);color:var(--success);border-color:var(--success)}

/* ===== ALERT ===== */
.alert{
  padding:12px 16px;border-radius:var(--radius-sm);font-size:14px;margin-bottom:16px;
  display:flex;align-items:center;gap:10px;
}
.alert svg{width:18px;height:18px;flex-shrink:0}
.alert-info{background:var(--info-bg);color:var(--info);border:1px solid rgba(59,130,246,0.3)}
.alert-success{background:var(--success-bg);color:var(--success);border:1px solid rgba(34,197,94,0.3)}
.alert-danger{background:var(--danger-bg);color:var(--danger);border:1px solid rgba(239,68,68,0.3)}
.alert-warning{background:var(--warning-bg);color:var(--warning);border:1px solid rgba(245,158,11,0.3)}

/* ===== AUTH MESSAGE ===== */
.auth-message{
  padding:12px 16px;border-radius:var(--radius-sm);font-size:14px;margin-bottom:20px;
  display:flex;align-items:center;gap:10px;
  background:var(--warning-bg);color:var(--warning);border:1px solid rgba(245,158,11,0.3);
}

/* ===== FILE ICON COLORS ===== */
.type-audio{color:#8b5cf6}

/* ===== SORT CONTROLS ===== */
.sort-group{display:flex;align-items:center;gap:4px}

/* ===== INFO CARDS (SETTINGS) ===== */
.info-card{
  background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:12px 14px;display:flex;flex-direction:column;gap:4px;
}
.info-label{font-size:11px;text-transform:uppercase;letter-spacing:0.5px;color:var(--text3)}
.info-value{font-size:13px;font-weight:500;color:var(--text)}

/* ===== EMPTY STATE ACTIONS ===== */
.empty-actions{display:flex;gap:8px;margin-top:4px}

/* ===== DRAG OVER ===== */
.drag-over{position:relative}
.drag-over::after{
  content:'释放文件以上传';position:absolute;inset:0;z-index:50;
  background:rgba(99,102,241,0.1);border:2px dashed var(--primary);
  border-radius:var(--radius);display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:600;color:var(--primary);
}

/* ===== PASSWORD STRENGTH ===== */
#pwdStrength{transition:all 0.3s ease}
#pwdStrengthBar{width:0;transition:all 0.3s ease}