@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--primary: #4285F4;--primary-light: #669DF6;--primary-dark: #1A73E8;--primary-rgb: 66, 133, 244;--accent: #00BCD4;--accent-light: #4DD0E1;--telegram-blue: #0088cc;--telegram-blue-light: #34AADC;--telegram-gradient: linear-gradient(135deg, #0088cc, #36AEEE);--bg-primary: #FFFFFF;--bg-secondary: #F8F9FA;--bg-tertiary: #F1F3F4;--bg-hover: #E8EAED;--bg-active: #D2E3FC;--surface: #FFFFFF;--surface-elevated: #FFFFFF;--surface-glass: rgba(255, 255, 255, .72);--text-primary: #202124;--text-secondary: #5F6368;--text-tertiary: #80868B;--text-on-primary: #FFFFFF;--border: #DADCE0;--border-light: #E8EAED;--divider: #E0E0E0;--success: #34A853;--warning: #FBBC04;--error: #EA4335;--info: #4285F4;--file-image: #EA4335;--file-video: #FF6D00;--file-audio: #AB47BC;--file-document: #4285F4;--file-archive: #FDD835;--file-other: #5F6368;--sidebar-width: 256px;--toolbar-height: 64px;--header-height: 64px;--sp-1: 4px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-5: 20px;--sp-6: 24px;--sp-8: 32px;--sp-10: 40px;--sp-12: 48px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-xs: 11px;--font-sm: 12px;--font-md: 14px;--font-lg: 16px;--font-xl: 20px;--font-2xl: 24px;--font-3xl: 32px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-2xl: 24px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 2px 8px rgba(0, 0, 0, .1);--shadow-lg: 0 4px 16px rgba(0, 0, 0, .12);--shadow-xl: 0 8px 32px rgba(0, 0, 0, .16);--shadow-float: 0 6px 20px rgba(0, 0, 0, .15);--transition-fast: .12s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--transition-spring: .3s cubic-bezier(.34, 1.56, .64, 1);--backdrop-blur: blur(12px);--z-sidebar: 100;--z-toolbar: 200;--z-dropdown: 300;--z-modal: 400;--z-overlay: 500;--z-toast: 600}[data-theme=dark]{--bg-primary: #1E1E1E;--bg-secondary: #252526;--bg-tertiary: #2D2D30;--bg-hover: #3C3C3C;--bg-active: #264F78;--surface: #2D2D30;--surface-elevated: #333337;--surface-glass: rgba(30, 30, 30, .85);--text-primary: #E4E4E4;--text-secondary: #ABABAB;--text-tertiary: #808080;--border: #404040;--border-light: #333337;--divider: #404040;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 2px 8px rgba(0, 0, 0, .4);--shadow-lg: 0 4px 16px rgba(0, 0, 0, .5);--shadow-xl: 0 8px 32px rgba(0, 0, 0, .6);--shadow-float: 0 6px 20px rgba(0, 0, 0, .5)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);font-size:var(--font-md);color:var(--text-primary);background:var(--bg-primary);line-height:1.5;overflow:hidden;height:100vh;transition:background-color var(--transition-base),color var(--transition-base)}a{color:var(--primary);text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none;font-size:inherit;color:inherit}input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}img{max-width:100%;display:block}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--text-tertiary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}.flex{display:flex}.flex-col{flex-direction:column}.flex-1{flex:1}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-1{gap:var(--sp-1)}.gap-2{gap:var(--sp-2)}.gap-3{gap:var(--sp-3)}.gap-4{gap:var(--sp-4)}.gap-6{gap:var(--sp-6)}.text-center{text-align:center}.text-sm{font-size:var(--font-sm)}.text-md{font-size:var(--font-md)}.text-lg{font-size:var(--font-lg)}.text-xl{font-size:var(--font-xl)}.font-medium{font-weight:500}.font-semibold{font-weight:600}.text-secondary{color:var(--text-secondary)}.text-tertiary{color:var(--text-tertiary)}.truncate{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.hidden{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}#app{display:flex;flex-direction:column;height:100vh;width:100vw;overflow:hidden}.app-header{display:flex;align-items:center;height:var(--header-height);padding:0 var(--sp-4);background:var(--surface);border-bottom:1px solid var(--border-light);z-index:var(--z-toolbar);gap:var(--sp-3);flex-shrink:0}.app-logo{display:flex;align-items:center;gap:var(--sp-3);min-width:200px;padding-right:var(--sp-4)}.app-logo svg{width:36px;height:36px;flex-shrink:0}.app-logo-text{font-size:var(--font-xl);font-weight:700;background:var(--telegram-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.search-bar{flex:1;max-width:720px;position:relative}.search-bar input{width:100%;height:48px;padding:0 var(--sp-12) 0 var(--sp-12);background:var(--bg-secondary);border:1px solid transparent;border-radius:var(--radius-full);outline:none;font-size:var(--font-md);color:var(--text-primary);transition:all var(--transition-base)}.search-bar input:focus{background:var(--bg-primary);border-color:var(--primary);box-shadow:0 1px 6px rgba(var(--primary-rgb),.28)}.search-bar input::placeholder{color:var(--text-tertiary)}.search-bar .search-icon{position:absolute;left:var(--sp-4);top:50%;transform:translateY(-50%);color:var(--text-tertiary);pointer-events:none}.search-bar .search-clear{position:absolute;right:var(--sp-3);top:50%;transform:translateY(-50%);width:32px;height:32px;display:none;align-items:center;justify-content:center;border-radius:var(--radius-full);color:var(--text-secondary)}.search-bar .search-clear:hover{background:var(--bg-hover)}.search-bar input:not(:placeholder-shown)~.search-clear{display:flex}.header-actions{display:flex;align-items:center;gap:var(--sp-2);margin-left:auto}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-full);color:var(--text-secondary);transition:all var(--transition-fast);position:relative}.icon-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.icon-btn:active{transform:scale(.92)}.icon-btn svg{width:20px;height:20px}.user-avatar{width:36px;height:36px;border-radius:var(--radius-full);background:var(--telegram-gradient);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:var(--font-sm);cursor:pointer;transition:box-shadow var(--transition-fast)}.user-avatar:hover{box-shadow:0 0 0 2px var(--primary-light)}.app-body{display:flex;flex:1;overflow:hidden}.sidebar{width:var(--sidebar-width);background:var(--bg-primary);border-right:1px solid var(--border-light);display:flex;flex-direction:column;overflow-y:auto;flex-shrink:0;padding:var(--sp-3) 0;z-index:var(--z-sidebar);transition:transform var(--transition-slow)}.sidebar-section{padding:var(--sp-2) var(--sp-3)}.sidebar-section-title{padding:var(--sp-2) var(--sp-4);font-size:var(--font-xs);font-weight:600;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.5px}.btn-new{display:flex;align-items:center;gap:var(--sp-3);margin:var(--sp-2) var(--sp-3) var(--sp-4);padding:var(--sp-4) var(--sp-6);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);font-size:var(--font-md);font-weight:500;color:var(--text-primary);cursor:pointer;transition:all var(--transition-base);width:calc(100% - var(--sp-6))}.btn-new:hover{box-shadow:var(--shadow-lg);background:var(--bg-secondary)}.btn-new svg{width:24px;height:24px;fill:none}.btn-new .plus-icon{width:36px;height:36px;border-radius:var(--radius-full);background:var(--telegram-gradient);display:flex;align-items:center;justify-content:center;color:#fff}.sidebar-nav-item{display:flex;align-items:center;gap:var(--sp-3);padding:var(--sp-2) var(--sp-4) var(--sp-2) var(--sp-6);border-radius:0 var(--radius-full) var(--radius-full) 0;font-size:var(--font-sm);color:var(--text-primary);cursor:pointer;transition:all var(--transition-fast);min-height:36px;-webkit-user-select:none;user-select:none}.sidebar-nav-item:hover{background:var(--bg-hover)}.sidebar-nav-item.active{background:var(--bg-active);color:var(--primary-dark);font-weight:600}[data-theme=dark] .sidebar-nav-item.active{background:var(--bg-active);color:var(--primary-light)}.sidebar-nav-item svg{width:20px;height:20px;flex-shrink:0;color:var(--text-secondary)}.sidebar-nav-item.active svg{color:var(--primary)}.sidebar-nav-item .item-count{margin-left:auto;font-size:var(--font-xs);color:var(--text-tertiary)}.storage-info{padding:var(--sp-4) var(--sp-6);margin-top:auto;border-top:1px solid var(--border-light)}.storage-bar{height:4px;background:var(--bg-tertiary);border-radius:var(--radius-full);overflow:hidden;margin:var(--sp-2) 0}.storage-bar-fill{height:100%;background:var(--telegram-gradient);border-radius:var(--radius-full);transition:width var(--transition-slow)}.storage-text{font-size:var(--font-xs);color:var(--text-tertiary)}.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg-secondary)}.content-toolbar{display:flex;align-items:center;padding:var(--sp-2) var(--sp-4);gap:var(--sp-2);background:var(--bg-secondary);min-height:48px;flex-shrink:0}.breadcrumb{display:flex;align-items:center;gap:var(--sp-1);font-size:var(--font-sm);color:var(--text-secondary);flex:1;overflow:hidden}.breadcrumb-item{display:flex;align-items:center;gap:var(--sp-1);padding:var(--sp-1) var(--sp-2);border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;transition:background var(--transition-fast)}.breadcrumb-item:hover{background:var(--bg-hover)}.breadcrumb-item:last-child{color:var(--text-primary);font-weight:500}.breadcrumb-sep{color:var(--text-tertiary)}.view-toggle{display:flex;align-items:center;background:var(--bg-tertiary);border-radius:var(--radius-md);padding:2px}.view-toggle-btn{padding:var(--sp-1) var(--sp-2);border-radius:var(--radius-sm);color:var(--text-secondary);transition:all var(--transition-fast)}.view-toggle-btn.active{background:var(--surface);color:var(--text-primary);box-shadow:var(--shadow-sm)}.file-container{flex:1;overflow-y:auto;padding:var(--sp-4)}.file-section-title{font-size:var(--font-sm);font-weight:500;color:var(--text-secondary);padding:var(--sp-2) var(--sp-2);margin-bottom:var(--sp-2)}.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--sp-4)}.file-card{background:var(--surface);border:1px solid var(--border-light);border-radius:var(--radius-lg);cursor:pointer;overflow:hidden;transition:all var(--transition-base);position:relative}.file-card:hover{box-shadow:var(--shadow-md);border-color:var(--border)}.file-card.selected{border-color:var(--primary);background:rgba(var(--primary-rgb),.04);box-shadow:0 0 0 1px var(--primary)}.file-card-checkbox{position:absolute;top:var(--sp-2);left:var(--sp-2);width:24px;height:24px;border-radius:var(--radius-full);background:var(--surface-glass);-webkit-backdrop-filter:var(--backdrop-blur);backdrop-filter:var(--backdrop-blur);display:flex;align-items:center;justify-content:center;opacity:0;transform:scale(.8);transition:all var(--transition-fast);z-index:2;border:2px solid var(--border)}.file-card:hover .file-card-checkbox,.file-card.selected .file-card-checkbox{opacity:1;transform:scale(1)}.file-card.selected .file-card-checkbox{background:var(--primary);border-color:var(--primary);color:#fff}.file-card-preview{height:160px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);overflow:hidden;position:relative}.file-card-preview img{width:100%;height:100%;object-fit:cover}.file-card-preview .file-icon{font-size:48px;color:var(--text-tertiary)}.file-card-preview .file-icon svg{width:48px;height:48px}.file-card-info{padding:var(--sp-3)}.file-card-name{font-size:var(--font-sm);font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-card-meta{display:flex;align-items:center;gap:var(--sp-2);margin-top:var(--sp-1);font-size:var(--font-xs);color:var(--text-tertiary)}.file-card-actions{position:absolute;top:var(--sp-2);right:var(--sp-2);opacity:0;transition:opacity var(--transition-fast)}.file-card:hover .file-card-actions{opacity:1}.folder-card{background:var(--surface);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:var(--sp-3) var(--sp-4);display:flex;align-items:center;gap:var(--sp-3);cursor:pointer;transition:all var(--transition-base)}.folder-card:hover{background:var(--bg-hover);box-shadow:var(--shadow-sm)}.folder-card.selected{border-color:var(--primary);background:rgba(var(--primary-rgb),.04)}.folder-card .folder-icon{color:var(--text-secondary)}.folder-card .folder-icon svg{width:24px;height:24px}.folder-card .folder-name{font-size:var(--font-sm);font-weight:500;color:var(--text-primary);flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.folder-card .folder-meta{font-size:var(--font-xs);color:var(--text-tertiary)}.folder-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--sp-3);margin-bottom:var(--sp-6)}.file-list{width:100%}.file-list-header{display:grid;grid-template-columns:44px 1fr 120px 100px 40px;padding:var(--sp-2) var(--sp-4);align-items:center;font-size:var(--font-xs);font-weight:600;color:var(--text-secondary);border-bottom:1px solid var(--border-light);-webkit-user-select:none;user-select:none;gap:var(--sp-2)}.file-list-header>div{cursor:pointer}.file-list-header>div:hover{color:var(--text-primary)}.file-list-row{display:grid;grid-template-columns:44px 1fr 120px 100px 40px;padding:var(--sp-2) var(--sp-4);align-items:center;border-bottom:1px solid var(--border-light);cursor:pointer;transition:background var(--transition-fast);gap:var(--sp-2)}.file-list-row:hover{background:var(--bg-hover)}.file-list-row.selected{background:rgba(var(--primary-rgb),.08)}.file-list-row .file-name-cell{display:flex;align-items:center;gap:var(--sp-3);overflow:hidden}.file-list-row .file-name-cell svg{width:20px;height:20px;flex-shrink:0}.file-list-row .file-name-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:var(--font-sm)}.context-menu{position:fixed;min-width:200px;background:var(--surface-elevated);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-xl);padding:var(--sp-1) 0;z-index:var(--z-dropdown);animation:contextMenuIn .15s ease}@keyframes contextMenuIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.context-menu-item{display:flex;align-items:center;gap:var(--sp-3);padding:var(--sp-2) var(--sp-4);font-size:var(--font-sm);color:var(--text-primary);cursor:pointer;transition:background var(--transition-fast)}.context-menu-item:hover{background:var(--bg-hover)}.context-menu-item svg{width:18px;height:18px;color:var(--text-secondary)}.context-menu-item.danger{color:var(--error)}.context-menu-item.danger svg{color:var(--error)}.context-menu-divider{height:1px;background:var(--divider);margin:var(--sp-1) 0}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);animation:fadeIn .2s ease;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:var(--surface);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);max-width:560px;width:90%;max-height:80vh;overflow-y:auto;animation:modalIn .3s cubic-bezier(.34,1.56,.64,1)}@keyframes modalIn{0%{opacity:0;transform:scale(.9) translateY(20px)}to{opacity:1;transform:scale(1) translateY(0)}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--sp-5) var(--sp-6);border-bottom:1px solid var(--border-light)}.modal-title{font-size:var(--font-lg);font-weight:600}.modal-body{padding:var(--sp-6)}.modal-footer{display:flex;justify-content:flex-end;gap:var(--sp-3);padding:var(--sp-4) var(--sp-6);border-top:1px solid var(--border-light)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);padding:var(--sp-2) var(--sp-5);border-radius:var(--radius-md);font-size:var(--font-sm);font-weight:500;cursor:pointer;transition:all var(--transition-base);border:1px solid transparent;min-height:36px;white-space:nowrap}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow-md)}.btn-secondary{background:transparent;color:var(--primary);border-color:var(--border)}.btn-secondary:hover{background:rgba(var(--primary-rgb),.04)}.btn-danger{background:var(--error);color:#fff}.btn-danger:hover{filter:brightness(.9)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--bg-hover)}.form-input{width:100%;padding:var(--sp-3) var(--sp-4);background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);outline:none;transition:all var(--transition-base)}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(var(--primary-rgb),.12);background:var(--bg-primary)}.form-label{display:block;font-size:var(--font-sm);font-weight:500;color:var(--text-secondary);margin-bottom:var(--sp-2)}.form-group{margin-bottom:var(--sp-4)}.upload-overlay{position:fixed;inset:0;background:rgba(var(--primary-rgb),.1);border:3px dashed var(--primary);display:none;align-items:center;justify-content:center;z-index:var(--z-overlay);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.upload-overlay.active{display:flex}.upload-overlay-content{text-align:center;padding:var(--sp-10);background:var(--surface-glass);border-radius:var(--radius-2xl);-webkit-backdrop-filter:var(--backdrop-blur);backdrop-filter:var(--backdrop-blur)}.upload-overlay-content svg{width:64px;height:64px;color:var(--primary);margin-bottom:var(--sp-4)}.upload-overlay-content h3{font-size:var(--font-xl);font-weight:600;margin-bottom:var(--sp-2)}.upload-overlay-content p{color:var(--text-secondary)}.upload-progress-panel{position:fixed;bottom:var(--sp-4);right:var(--sp-4);width:360px;background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);border:1px solid var(--border);z-index:var(--z-toast);overflow:hidden;animation:slideUp .3s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.upload-progress-header{display:flex;align-items:center;justify-content:space-between;padding:var(--sp-3) var(--sp-4);border-bottom:1px solid var(--border-light);font-size:var(--font-sm);font-weight:600}.upload-progress-list{max-height:240px;overflow-y:auto}.upload-progress-item{display:flex;align-items:center;gap:var(--sp-3);padding:var(--sp-3) var(--sp-4);border-bottom:1px solid var(--border-light)}.upload-progress-item:last-child{border-bottom:none}.upload-progress-item .file-info{flex:1;overflow:hidden}.upload-progress-item .file-name{font-size:var(--font-sm);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.upload-progress-item .progress-bar{height:3px;background:var(--bg-tertiary);border-radius:var(--radius-full);margin-top:var(--sp-1);overflow:hidden}.upload-progress-item .progress-bar-fill{height:100%;background:var(--primary);border-radius:var(--radius-full);transition:width var(--transition-base)}.upload-progress-item .progress-text{font-size:var(--font-xs);color:var(--text-tertiary);white-space:nowrap}.preview-modal{position:fixed;inset:0;background:#000000d9;display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);animation:fadeIn .2s ease}.preview-modal-content{max-width:90vw;max-height:90vh;position:relative}.preview-modal-content img,.preview-modal-content video{max-width:90vw;max-height:85vh;object-fit:contain;border-radius:var(--radius-md)}.preview-modal-close{position:absolute;top:var(--sp-4);right:var(--sp-4);width:44px;height:44px;background:#00000080;color:#fff;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background var(--transition-fast);z-index:1}.preview-modal-close:hover{background:#000000b3}.preview-info{position:absolute;bottom:0;left:0;right:0;padding:var(--sp-6);background:linear-gradient(transparent,#000000b3);color:#fff;border-radius:0 0 var(--radius-md) var(--radius-md)}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg-secondary);padding:var(--sp-4)}.login-card{background:var(--surface);border-radius:var(--radius-2xl);box-shadow:var(--shadow-xl);width:100%;max-width:440px;overflow:hidden;animation:modalIn .5s cubic-bezier(.34,1.56,.64,1)}.login-hero{background:var(--telegram-gradient);padding:var(--sp-10) var(--sp-8);text-align:center;color:#fff;position:relative;overflow:hidden}.login-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 70%,rgba(255,255,255,.15) 0%,transparent 50%)}.login-hero svg{width:72px;height:72px;margin:0 auto var(--sp-4);position:relative;z-index:1}.login-hero h1{font-size:var(--font-2xl);font-weight:700;margin-bottom:var(--sp-2);position:relative;z-index:1}.login-hero p{font-size:var(--font-md);opacity:.9;position:relative;z-index:1}.login-body{padding:var(--sp-8)}.login-step{display:none}.login-step.active{display:block;animation:fadeIn .3s ease}.qr-container{display:flex;flex-direction:column;align-items:center;gap:var(--sp-4);padding:var(--sp-4)}.qr-code{width:200px;height:200px;background:#fff;border-radius:var(--radius-lg);padding:var(--sp-4);box-shadow:var(--shadow-md);display:flex;align-items:center;justify-content:center;position:relative}.qr-code img,.qr-code canvas{width:100%;height:100%}.qr-code .qr-loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#fff;border-radius:var(--radius-lg)}.qr-instructions{text-align:center}.qr-instructions ol{text-align:left;font-size:var(--font-sm);color:var(--text-secondary);list-style-position:inside;line-height:1.8}.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:var(--radius-full);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.toast-container{position:fixed;bottom:var(--sp-6);left:50%;transform:translate(-50%);z-index:var(--z-toast);display:flex;flex-direction:column;gap:var(--sp-2);align-items:center}.toast{padding:var(--sp-3) var(--sp-5);background:var(--text-primary);color:var(--bg-primary);border-radius:var(--radius-md);font-size:var(--font-sm);font-weight:500;box-shadow:var(--shadow-lg);animation:toastIn .3s ease,toastOut .3s ease 2.7s forwards;white-space:nowrap}@keyframes toastIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes toastOut{to{opacity:0;transform:translateY(-10px)}}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--sp-12);text-align:center;flex:1}.empty-state svg{width:120px;height:120px;color:var(--text-tertiary);margin-bottom:var(--sp-6);opacity:.5}.empty-state h3{font-size:var(--font-xl);font-weight:600;margin-bottom:var(--sp-2)}.empty-state p{color:var(--text-secondary);max-width:360px;margin-bottom:var(--sp-6)}@media(max-width:768px){.sidebar{position:fixed;left:0;top:var(--header-height);bottom:0;transform:translate(-100%);background:var(--bg-primary);box-shadow:var(--shadow-xl)}.sidebar.open{transform:translate(0)}.mobile-overlay{position:fixed;inset:0;top:var(--header-height);background:#0000004d;z-index:calc(var(--z-sidebar) - 1);display:none}.mobile-overlay.active{display:block}.app-logo{min-width:auto}.upload-progress-panel{left:var(--sp-4);width:auto}.file-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:var(--sp-3)}.file-card-preview{height:120px}.file-list-header,.file-list-row{grid-template-columns:44px 1fr 80px 40px}.file-list-header>div:nth-child(4),.file-list-row>div:nth-child(4){display:none}}@media(max-width:480px){.search-bar{display:none}.header-actions .search-mobile-btn{display:inline-flex}}.selection-bar{display:none;align-items:center;gap:var(--sp-3);padding:var(--sp-2) var(--sp-4);background:var(--primary);color:#fff;font-size:var(--font-sm);font-weight:500;min-height:48px;flex-shrink:0;animation:slideDown .2s ease}@keyframes slideDown{0%{transform:translateY(-100%)}to{transform:translateY(0)}}.selection-bar.active{display:flex}.selection-bar .selection-count{flex:1}.selection-bar .icon-btn{color:#fff}.selection-bar .icon-btn:hover{background:#ffffff26}.channel-selector{display:flex;flex-direction:column;gap:var(--sp-1)}.channel-item{display:flex;align-items:center;gap:var(--sp-3);padding:var(--sp-2) var(--sp-4);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);font-size:var(--font-sm)}.channel-item:hover{background:var(--bg-hover)}.channel-item.active{background:var(--bg-active);font-weight:500}.channel-avatar{width:28px;height:28px;border-radius:var(--radius-full);background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;font-size:var(--font-xs);color:var(--text-secondary);flex-shrink:0}.skeleton{background:linear-gradient(90deg,var(--bg-tertiary) 25%,var(--bg-hover) 50%,var(--bg-tertiary) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-md)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.skeleton-card{height:220px;border-radius:var(--radius-lg)}.skeleton-row{height:48px;margin-bottom:var(--sp-2)}.dropdown{position:relative}.dropdown-menu{position:absolute;top:100%;right:0;min-width:200px;background:var(--surface-elevated);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-xl);padding:var(--sp-1) 0;z-index:var(--z-dropdown);animation:contextMenuIn .15s ease;display:none}.dropdown-menu.open{display:block}.dropdown-item{display:flex;align-items:center;gap:var(--sp-3);padding:var(--sp-2) var(--sp-4);font-size:var(--font-sm);color:var(--text-primary);cursor:pointer;transition:background var(--transition-fast)}.dropdown-item:hover{background:var(--bg-hover)}.dropdown-divider{height:1px;background:var(--divider);margin:var(--sp-1) 0}