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1);--sidebar-width:260px;--header-height:64px;--scrollbar-thumb:#ffffff1f;--scrollbar-thumb-hover:#ffffff38;--folder-icon-bg:#38bdf81f;--folder-icon-color:#38bdf8;--card-border-hover:#38bdf866}[data-theme=light]{--bg-primary:#f8fafc;--bg-secondary:#fff;--bg-tertiary:#f1f5f9;--bg-card:#fff;--bg-card-hover:#f8fafc;--glass-bg:#ffffffe6;--glass-border:#e2e8f0;--glass-blur:blur(12px);--accent:#2563eb;--accent-light:#3b82f6;--accent-glow:#2563eb26;--accent-2:#4f46e5;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#94a3b8;--danger:#dc2626;--danger-light:#f87171;--success:#16a34a;--shadow-sm:0 1px 3px #0000000f, 0 1px 2px #0000000a;--shadow-md:0 4px 14px #0f172a14, 0 1px 3px #0f172a0a;--shadow-lg:0 14px 36px #0f172a1f, 0 2px 6px #0f172a0a;--shadow-glow:0 0 24px 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clamp(14px,2vh,24px)}.sidebar-logo{align-items:center;gap:10px;margin-bottom:clamp(14px,2.5vh,28px);padding:0 8px;display:flex}.sidebar-logo-icon{border-radius:var(--radius-sm);width:clamp(32px,4vw,38px);height:clamp(32px,4vw,38px);box-shadow:var(--shadow-sm);flex-shrink:0;place-items:center;display:grid;overflow:hidden}.logo-img{object-fit:cover;border-radius:inherit;width:100%;height:100%;display:block}.sidebar-logo-text{background:linear-gradient(135deg, var(--accent-light), var(--accent-2));-webkit-text-fill-color:transparent;white-space:nowrap;-webkit-background-clip:text;background-clip:text;font-size:clamp(.95rem,1.5vw,1.1rem);font-weight:700}.sidebar-btn-new{background:linear-gradient(135deg, var(--accent), var(--accent-2));border-radius:var(--radius-md);color:#fff;width:100%;transition:opacity var(--transition), transform var(--transition), box-shadow var(--transition);box-shadow:0 4px 16px 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var(--accent-glow));transition:stroke-dashoffset .6s cubic-bezier(.4,0,.2,1)}.storage-circle-content{text-align:center;pointer-events:none;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.storage-circle-val{color:var(--text-primary);letter-spacing:-.01em;font-size:.95rem;font-weight:800;line-height:1.1}.storage-circle-sub{color:var(--text-muted);max-width:80px;margin-top:3px;font-size:.58rem;line-height:1.2}.header{height:var(--header-height);background:var(--bg-secondary);border-bottom:1px solid var(--glass-border);flex-shrink:0;justify-content:space-between;align-items:center;gap:16px;padding:0 32px;display:flex}.header-search{flex:1;align-items:center;max-width:520px;display:flex;position:relative}.search-shortcut-badge{color:var(--accent);background:var(--accent-glow);border:1px solid var(--accent);pointer-events:none;letter-spacing:.04em;border-radius:6px;padding:2px 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a{color:var(--accent-light);transition:color var(--transition);font-weight:600}.auth-footer a:hover{color:var(--accent-2)}.auth-alert{border-radius:var(--radius-md);color:var(--danger-light);background:#ef44441a;border:1px solid #ef444440;margin-bottom:20px;padding:12px 16px;font-size:.85rem}.empty-state{text-align:center;padding:64px 24px}.empty-state-icon{background:var(--bg-card);border:1px solid var(--glass-border);width:72px;height:72px;color:var(--text-muted);border-radius:50%;place-items:center;margin:0 auto 20px;display:grid}.empty-state-title{color:var(--text-primary);margin-bottom:8px;font-size:1rem;font-weight:600}.empty-state-sub{color:var(--text-muted);font-size:.85rem}.toast-container{z-index:9999;flex-direction:column;gap:8px;display:flex;position:fixed;bottom:24px;right:24px}.toast{border-radius:var(--radius-md);box-shadow:var(--shadow-md);align-items:center;gap:10px;max-width:360px;padding:12px 20px;font-size:.875rem;font-weight:500;animation:.2s slideInRight;display:flex}.toast-success{color:#86efac;background:#22c55e26;border:1px solid #22c55e4d}.toast-error{color:var(--danger-light);background:#ef444426;border:1px solid #ef44444d}.spinner{border:2px solid #ffffff26;border-top-color:currentColor;border-radius:50%;flex-shrink:0;width:20px;height:20px;animation:.6s linear infinite spin}.spinner-lg{border-width:3px;width:40px;height:40px}.loading-screen{flex-direction:column;justify-content:center;align-items:center;gap:16px;height:100vh;display:flex}.upload-progress{margin-top:16px}.upload-progress-label{color:var(--text-secondary);justify-content:space-between;margin-bottom:8px;font-size:.78rem;display:flex}.upload-progress-bar{background:var(--bg-tertiary);border-radius:99px;height:6px;overflow:hidden}.upload-progress-fill{background:linear-gradient(90deg, var(--accent), var(--accent-2));border-radius:99px;height:100%;transition:width .3s}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.preview-modal{background:var(--bg-secondary);border:1px solid var(--glass-border);border-radius:var(--radius-xl);width:92vw;max-width:1000px;max-height:90vh;box-shadow:var(--shadow-lg);flex-direction:column;animation:.2s slideUp;display:flex;overflow:hidden}.preview-header{border-bottom:1px solid var(--glass-border);flex-shrink:0;justify-content:space-between;align-items:center;gap:12px;padding:16px 20px;display:flex}.preview-title{align-items:center;gap:10px;min-width:0;display:flex}.preview-filename{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;max-width:400px;font-size:.9rem;font-weight:600;overflow:hidden}.preview-size{color:var(--text-muted);background:var(--bg-tertiary);border-radius:99px;flex-shrink:0;padding:2px 8px;font-size:.75rem}.preview-header-actions{flex-shrink:0;align-items:center;gap:8px;display:flex}.preview-btn{border-radius:var(--radius-md);width:34px;height:34px;color:var(--text-secondary);transition:background var(--transition), color var(--transition);background:var(--bg-tertiary);place-items:center;display:grid}.preview-btn:hover{background:var(--bg-card-hover);color:var(--text-primary)}.preview-body{background:var(--bg-primary);flex:1;justify-content:center;align-items:center;min-height:300px;display:flex;position:relative;overflow:auto}.preview-center{text-align:center;color:var(--text-secondary);flex-direction:column;justify-content:center;align-items:center;gap:8px;width:100%;padding:48px 24px;display:flex}.preview-image{object-fit:contain;border-radius:var(--radius-md);max-width:100%;max-height:75vh;display:block}.preview-video{border-radius:var(--radius-md);background:#000;outline:none;max-width:100%;max-height:75vh;display:block}.preview-iframe{border:none;width:100%;height:75vh;display:block}.preview-text{width:100%;height:75vh;color:var(--text-primary);white-space:pre-wrap;word-break:break-word;text-align:left;padding:24px;font-family:Courier New,monospace;font-size:.825rem;line-height:1.7;overflow:auto}.spinner-icon{color:var(--accent-light);animation:.8s linear infinite spin}.file-card-image{padding:0;overflow:hidden}.file-card-image .file-card-name,.file-card-image .file-card-meta{padding:0 12px}.file-card-image .file-card-name{padding-top:10px}.file-card-image .file-card-meta{padding-bottom:12px}.file-card-image .file-card-actions{top:8px;right:8px}.file-card-thumb{background:var(--bg-tertiary);width:100%;height:130px;position:relative;overflow:hidden}.file-card-thumb-img{object-fit:cover;width:100%;height:100%;transition:transform .3s;display:block}.file-card-image:hover .file-card-thumb-img{transform:scale(1.05)}:root{--sp-1:clamp(.25rem, .8vw, .5rem);--sp-2:clamp(.5rem, 1.2vw, .75rem);--sp-3:clamp(.75rem, 1.8vw, 1rem);--sp-4:clamp(1rem, 2.5vw, 1.5rem);--sp-5:clamp(1.25rem, 3vw, 2rem);--sp-6:clamp(1.5rem, 4vw, 2.5rem);--fs-xs:clamp(.6rem, 1.8vw, .72rem);--fs-sm:clamp(.72rem, 2vw, .82rem);--fs-base:clamp(.82rem, 2.2vw, .9rem);--fs-lg:clamp(.9rem, 2.5vw, 1rem);--fs-xl:clamp(1rem, 3vw, 1.15rem);--fs-2xl:clamp(1.1rem, 3.5vw, 1.4rem);--icon-sm:clamp(28px, 5vw, 38px);--icon-md:clamp(36px, 6vw, 48px);--sidebar-width:clamp(200px, 18vw, 270px);--header-height:clamp(52px, 7vh, 68px);--bottom-bar-h:clamp(54px, 9vh, 68px);--fab-size:clamp(42px, 9vw, 54px);--card-pad:clamp(.6rem, 2vw, 1rem);--content-pad:clamp(.75rem, 3vw, 2rem)}.app-content{padding:var(--content-pad)}.sidebar{width:var(--sidebar-width);padding:var(--sp-4) var(--sp-3)}.app-main{margin-left:var(--sidebar-width)}.header{height:var(--header-height);padding:0 var(--content-pad)}.folder-card,.file-card{padding:var(--card-pad)}.folder-card-icon,.file-card-icon{width:var(--icon-md);height:var(--icon-md);margin-bottom:var(--sp-2)}.folder-card-name,.file-card-name{font-size:var(--fs-sm)}.folder-card-date,.file-card-meta{font-size:var(--fs-xs)}.item-grid{grid-template-columns:repeat(auto-fill,minmax(clamp(130px,18vw,180px),1fr));gap:clamp(6px,1.5vw,14px)}.sidebar-storage{padding:var(--sp-3);background:var(--bg-card);border:1px solid var(--glass-border);border-radius:var(--radius-md);flex-shrink:0;min-height:0;margin-top:auto}.sidebar-storage-text{font-size:var(--fs-xs);color:var(--text-secondary);margin-bottom:var(--sp-2)}.sidebar-storage-bar{background:#ffffff14;border-radius:99px;height:5px;overflow:hidden}.sidebar-storage-bar-fill{border-radius:99px;height:100%;transition:width .4s}.sidebar{flex-direction:column;display:flex;overflow:hidden auto}.header-search input{font-size:var(--fs-base)}.breadcrumb-link,.breadcrumb-current{font-size:var(--fs-sm)}.section-title{font-size:var(--fs-xs)}.modal{padding:var(--sp-5)}.modal-title{font-size:var(--fs-xl)}.auth-title{font-size:var(--fs-2xl)}.auth-subtitle{font-size:var(--fs-base)}.sidebar-close-btn{border-radius:var(--radius-sm);width:clamp(26px,5vw,32px);height:clamp(26px,5vw,32px);color:var(--text-secondary);transition:background var(--transition), color var(--transition);flex-shrink:0;place-items:center;margin-left:auto;display:none}.sidebar-close-btn:hover{background:var(--bg-card-hover);color:var(--text-primary)}.mobile-bottom-bar{display:none}.header-hamburger{border-radius:var(--radius-md);width:clamp(32px,6vw,40px);height:clamp(32px,6vw,40px);color:var(--text-secondary);cursor:pointer;transition:background var(--transition), color var(--transition);flex-shrink:0;place-items:center;display:none}.header-hamburger:hover{background:var(--bg-card-hover);color:var(--text-primary)}.sidebar-overlay{display:none}@media (width<=1024px) and (width>=769px){:root{--sidebar-width:clamp(180px, 22vw, 230px);--content-pad:clamp(.75rem, 2.5vw, 1.5rem)}.item-grid{grid-template-columns:repeat(auto-fill,minmax(clamp(120px,16vw,160px),1fr))}}@media (width<=768px){.header-hamburger,.sidebar-close-btn{display:grid}.sidebar-overlay{z-index:199;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#0000008c;animation:.2s fadeIn;display:block;position:fixed;inset:0}.sidebar{z-index:200;width:min(80vw,300px);box-shadow:none;padding-bottom:env(safe-area-inset-bottom,1rem);transition:transform .3s cubic-bezier(.4,0,.2,1);transform:translate(-100%)}.sidebar.open{transform:translate(0);box-shadow:8px 0 40px #0009}.sidebar-storage{word-break:break-word;flex-shrink:0;margin-top:auto}.app-main{padding-bottom:var(--bottom-bar-h);margin-left:0!important}.header{height:var(--header-height);gap:clamp(.4rem,2vw,.75rem);padding:0 clamp(.5rem,3vw,1rem)}.header-search{flex:1;min-width:0;max-width:100%}.app-content{padding:clamp(.75rem,3vw,1.25rem);padding-bottom:calc(var(--bottom-bar-h) + clamp(.5rem, 2vw, 1rem));overflow-y:auto}.item-grid{grid-template-columns:repeat(2,1fr);gap:clamp(5px,1.5vw,10px);margin-bottom:clamp(.75rem,2vw,1rem)}.folder-card,.file-card{padding:clamp(.5rem,2.5vw,.85rem)}.folder-card-icon,.file-card-icon{width:clamp(28px,8vw,40px);height:clamp(28px,8vw,40px);margin-bottom:clamp(.4rem,1.5vw,.6rem)}.folder-card-name,.file-card-name{font-size:clamp(.65rem,2.5vw,.8rem)}.folder-card-date,.file-card-meta{margin-top:2px;font-size:clamp(.58rem,2vw,.7rem)}.file-card-actions,.folder-card-actions{opacity:1}.breadcrumb{flex-wrap:wrap;margin-bottom:clamp(.5rem,2vw,.875rem)}.breadcrumb-link,.breadcrumb-current{padding:2px clamp(4px,1vw,8px);font-size:clamp(.68rem,2.2vw,.8rem)}.section-title{font-size:clamp(.62rem,2vw,.75rem)}.file-card-actions,.folder-card-actions{opacity:1;gap:2px;max-width:calc(100% - 8px);top:4px;right:4px}.card-action-btn{border-radius:6px;width:clamp(20px,6vw,26px);height:clamp(20px,6vw,26px)}.card-action-btn svg{width:clamp(10px,3vw,13px);height:clamp(10px,3vw,13px)}.upload-zone{margin-bottom:clamp(.75rem,2vw,1rem);padding:clamp(1.25rem,5vw,2rem) clamp(.75rem,3vw,1.25rem)}.upload-zone-icon{width:clamp(36px,10vw,52px);height:clamp(36px,10vw,52px);margin-bottom:clamp(.5rem,2vw,.75rem)}.upload-zone-title{font-size:clamp(.78rem,2.5vw,.9rem)}.upload-zone-sub{font-size:clamp(.65rem,2vw,.78rem)}.modal-overlay{align-items:flex-end;padding:0}.modal{border-radius:var(--radius-xl) var(--radius-xl) 0 0;width:100%;max-width:100%;max-height:92svh;padding:clamp(1rem,4vw,1.5rem) clamp(.75rem,3vw,1.25rem) clamp(1.5rem,5vw,2rem)}.modal-title{font-size:clamp(.95rem,3vw,1.1rem)}.preview-modal{border-radius:0;width:100vw;max-width:100vw;max-height:100svh}.preview-filename{max-width:45vw;font-size:clamp(.72rem,2.5vw,.85rem)}.preview-image,.preview-video{max-height:60svh}.preview-iframe{height:60svh}.preview-text{height:60svh;font-size:clamp(.7rem,2vw,.82rem)}.toast-container{bottom:calc(var(--bottom-bar-h) + clamp(.4rem, 1.5vw, .75rem));left:clamp(.5rem,2vw,.875rem);right:clamp(.5rem,2vw,.875rem)}.toast{max-width:100%;padding:clamp(.5rem,2vw,.875rem) clamp(.75rem,3vw,1.25rem);font-size:clamp(.72rem,2.2vw,.85rem)}.auth-card{width:100%;padding:clamp(1.25rem, 4vw, 2rem) clamp(1rem, 4vw, 1.5rem) calc(clamp(1.5rem, 5vw, 2rem) + env(safe-area-inset-bottom,0px));border-radius:var(--radius-xl) var(--radius-xl) 0 0;position:fixed;bottom:0;left:0;right:0}.auth-page{align-items:flex-end}.auth-logo{margin-bottom:clamp(1rem,3vw,1.5rem)}.auth-title{font-size:clamp(1.1rem,4vw,1.35rem)}.auth-subtitle{margin-bottom:clamp(1rem,4vw,1.75rem);font-size:clamp(.78rem,2.5vw,.9rem)}.mobile-bottom-bar{height:var(--bottom-bar-h);background:var(--bg-secondary);border-top:1px solid var(--glass-border);z-index:150;padding:0 clamp(2px,1vw,8px);padding-bottom:env(safe-area-inset-bottom,0px);justify-content:space-around;align-items:center;display:flex;position:fixed;bottom:0;left:0;right:0}.mobile-bottom-btn{border-radius:var(--radius-md);height:100%;color:var(--text-muted);cursor:pointer;transition:color var(--transition), background var(--transition);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:clamp(2px,.5vw,4px);min-width:0;padding:0 clamp(2px,.8vw,6px);font-size:clamp(.52rem,1.8vw,.65rem);font-weight:600;display:flex}.mobile-bottom-btn span{text-overflow:ellipsis;white-space:nowrap;max-width:100%;overflow:hidden}.mobile-bottom-btn.active{color:var(--accent)}.mobile-bottom-fab{width:var(--fab-size);height:var(--fab-size);background:linear-gradient(135deg, var(--accent), var(--accent-2));color:#fff;box-shadow:0 4px 20px var(--accent-glow);cursor:pointer;transition:transform var(--transition), box-shadow var(--transition);border-radius:50%;flex-shrink:0;place-items:center;margin-bottom:clamp(4px,1.5vw,10px);display:grid}.mobile-bottom-fab:active{transform:scale(.92)}}