:root{--bg:#fafbfc;--bg-secondary:#f4f6f8;--card:#fff;--card-hover:#fafbfc;--text:#090d16;--text-secondary:#4b5563;--muted:#9ca3af;--accent:#4f46e5;--accent-hover:#4338ca;--accent-light:#e0e7ff;--success:#16a34a;--danger:#dc2626;--warning:#d97706;--border:#e5e7eb;--border-focus:#4f46e5;--radius:12px;--radius-sm:8px;--shadow:0 1px 2px 0 #0000000d, 0 1px 3px 0 #0000001a;--shadow-lg:0 10px 25px -5px #00000014, 0 8px 10px -6px #0000000d;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace}[data-theme=dark]{--bg:#090d16;--bg-secondary:#111827;--card:#111827;--card-hover:#1f2937;--text:#f9fafb;--text-secondary:#9ca3af;--muted:#6b7280;--accent:#6366f1;--accent-hover:#818cf8;--accent-light:#312e81;--success:#22c55e;--danger:#ef4444;--warning:#f59e0b;--border:#1f2937;--border-focus:#6366f1;--shadow:0 1px 3px 0 #00000080;--shadow-lg:0 20px 25px -5px #00000080, 0 8px 10px -6px #0006}[dir=rtl]{text-align:right}[dir=rtl] .nav-left{margin-left:auto;margin-right:0}[dir=rtl] .nav-right{margin-left:0;margin-right:auto}[dir=rtl] .toast{border-left:1px solid var(--border);border-right:4px solid var(--accent)}[dir=rtl] .toast.success{border-right-color:var(--success)}[dir=rtl] .toast.danger{border-right-color:var(--danger)}[dir=rtl] .toast.warning{border-right-color:var(--warning)}[dir=rtl] .toast-container{left:24px;right:auto}[dir=rtl] .file-table th{text-align:right}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;min-height:100vh;line-height:1.6;transition:background .25s,color .25s}a{color:inherit;cursor:pointer;text-decoration:none}img,svg{max-width:100%;height:auto;display:block}button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;background:0 0;border:none;outline:none}button{cursor:pointer}.container{max-width:1200px;margin:0 auto;padding:0 24px}.grid{gap:24px;display:grid}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-8{gap:8px}.gap-16{gap:16px}.w-full{width:100%}h1,h2,h3,h4{letter-spacing:-.025em;font-weight:600;line-height:1.25}h1{margin-bottom:8px;font-size:2.25rem}h2{margin-bottom:8px;font-size:1.5rem}h3{margin-bottom:6px;font-size:1.2rem}p{color:var(--text-secondary)}.small{color:var(--muted);font-size:.875rem}.mono{font-family:var(--font-mono);font-size:.85rem}.header{z-index:50;background:var(--card);border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);position:sticky;top:0}.navbar{justify-content:space-between;align-items:center;height:68px;display:flex}.brand{letter-spacing:-.03em;cursor:pointer;align-items:center;gap:10px;font-size:1.2rem;font-weight:700;display:flex}.brand .mark{background:linear-gradient(135deg, var(--accent), #818cf8);color:#fff;border-radius:9px;place-items:center;width:34px;height:34px;font-weight:800;display:grid;box-shadow:0 2px 8px #4f46e54d}.nav-left{align-items:center;gap:28px;display:flex}.nav-right{align-items:center;gap:16px;display:flex}.nav-link{color:var(--text-secondary);cursor:pointer;background:0 0;border-bottom:2px solid #0000;padding:6px 0;font-size:.92rem;font-weight:500;transition:all .2s}.nav-link:hover,.nav-link.active{color:var(--accent);border-bottom-color:var(--accent)}.btn{border-radius:var(--radius-sm);cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;padding:10px 18px;font-size:.92rem;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background:var(--accent);color:#fff;box-shadow:0 2px 6px #4f46e540}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px #4f46e559}.btn-primary:active{transform:translateY(0)}.btn-ghost{color:var(--text-secondary);border:1px solid var(--border);background:var(--bg-secondary)}.btn-ghost:hover{background:var(--card-hover);border-color:var(--muted);color:var(--text)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{opacity:.9}.btn-sm{padding:6px 14px;font-size:.85rem}.btn-icon{border-radius:var(--radius-sm);background:var(--bg-secondary);width:36px;height:36px;color:var(--text-secondary);cursor:pointer;border:1px solid var(--border);place-items:center;transition:all .2s;display:grid}.btn-icon:hover{background:var(--card-hover);color:var(--text);border-color:var(--muted)}.btn-full{justify-content:center;width:100%}.theme-toggle{background:var(--bg-secondary);cursor:pointer;border:1px solid var(--border);border-radius:50%;place-items:center;width:36px;height:36px;transition:all .2s;display:grid;position:relative;overflow:hidden}.theme-toggle:hover{background:var(--card-hover);border-color:var(--muted)}.theme-icon{justify-content:center;align-items:center;transition:transform .3s,opacity .3s;display:flex;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}[data-theme=light] .theme-icon-moon{opacity:0;transform:translate(-50%,-50%)rotate(90deg)scale(0)}[data-theme=dark] .theme-icon-sun{opacity:0;transform:translate(-50%,-50%)rotate(-90deg)scale(0)}.hero{text-align:center;padding:80px 0 56px}.hero h1{letter-spacing:-.03em;margin-bottom:16px;font-size:clamp(2.5rem,6vw,4.2rem);font-weight:700}.hero p.subtitle{color:var(--text-secondary);max-width:580px;margin:0 auto 36px;font-size:1.15rem;line-height:1.7}.hero-actions{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.features{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px;margin:64px 0;display:grid}.feature-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px 24px;transition:transform .2s,box-shadow .2s}.feature-card:hover{box-shadow:var(--shadow-lg);border-color:var(--muted);transform:translateY(-2px)}.feature-icon{background:var(--accent-light);width:44px;height:44px;color:var(--accent);border-radius:10px;place-items:center;margin-bottom:18px;display:grid}.feature-card h4{color:var(--text);margin-bottom:8px;font-weight:600}.feature-card p{color:var(--text-secondary);font-size:.92rem;line-height:1.6}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px}.auth-page{justify-content:center;align-items:center;min-height:82vh;padding:24px;display:flex}.auth-card{background:var(--card);border:1px solid var(--border);width:100%;max-width:420px;box-shadow:var(--shadow-lg);border-radius:20px;padding:44px 36px}.auth-header{text-align:center;margin-bottom:28px}.auth-header .brand{justify-content:center;font-size:1.4rem}.auth-header p{color:var(--muted);margin-top:8px;font-size:.92rem}.form-group{margin-bottom:20px}.form-label{color:var(--text-secondary);margin-bottom:8px;font-size:.88rem;font-weight:500;display:block}.input{border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-secondary);width:100%;color:var(--text);padding:11px 16px;font-size:.92rem;transition:border .2s,box-shadow .2s}.input:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px #4f46e51f}.input::placeholder{color:var(--muted)}.form-footer{text-align:center;color:var(--text-secondary);margin-top:24px;font-size:.9rem}.form-footer a,.form-footer button{color:var(--accent);cursor:pointer;font-weight:500}.error-msg{color:var(--danger);background:#dc262614;border:1px solid #dc262633;border-radius:6px;margin-top:8px;padding:10px 14px;font-size:.85rem}.dashboard-header{margin-bottom:28px}.page-title{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.breadcrumb{color:var(--muted);align-items:center;gap:6px;font-size:.85rem;display:flex}.breadcrumb button,.breadcrumb a{color:var(--accent);cursor:pointer;font-size:inherit;background:0 0;border:none}.toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px;display:flex}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius);text-align:center;background:var(--bg-secondary);cursor:pointer;padding:48px 24px;transition:all .2s}.upload-zone.drag-over{border-color:var(--accent);background:var(--accent-light)}.upload-icon{background:var(--card);width:52px;height:52px;color:var(--accent);box-shadow:var(--shadow);border-radius:12px;place-items:center;margin:0 auto 16px;display:grid}.upload-zone p{color:var(--text-secondary);margin-bottom:6px;font-weight:500}.upload-zone .small{font-size:.85rem}.file-input{display:none}.file-table-container{width:100%;overflow-x:auto}.file-table{border-collapse:separate;border-spacing:0 8px;width:100%}.file-table th{text-align:left;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);border-bottom:1px solid var(--border);padding:12px 20px;font-size:.78rem;font-weight:600}.file-table td{vertical-align:middle;border-bottom:1px solid var(--border);padding:14px 20px}.file-row{background:var(--card);border-radius:var(--radius-sm);transition:background .15s}.file-row:hover{background:var(--card-hover)}.file-cell{cursor:pointer;align-items:center;gap:14px;display:flex}.file-icon{background:var(--accent-light);width:38px;height:38px;color:var(--accent);border-radius:8px;flex-shrink:0;place-items:center;display:grid}.file-icon.folder{background:var(--warning);color:#fff}.file-info .file-name{color:var(--text);font-weight:500;display:block}.file-info .file-meta{color:var(--muted);align-items:center;gap:6px;margin-top:2px;font-size:.8rem;display:flex}.file-actions{justify-content:flex-end;gap:6px;display:flex}.empty-state{text-align:center;color:var(--muted);padding:64px 24px}.empty-icon{background:var(--bg-secondary);width:56px;height:56px;color:var(--muted);border-radius:14px;place-items:center;margin:0 auto 16px;display:grid}.modal-overlay{z-index:100;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#00000080;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.modal{background:var(--card);border:1px solid var(--border);width:100%;max-width:500px;max-height:85vh;box-shadow:var(--shadow-lg);border-radius:16px;animation:.2s cubic-bezier(.16,1,.3,1) modalIn;overflow:auto}@keyframes modalIn{0%{opacity:0;transform:scale(.96)translateY(8px)}to{opacity:1;transform:none}}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:20px 24px;display:flex}.modal-title{color:var(--text);align-items:center;gap:10px;font-size:1.1rem;font-weight:600;display:flex}.modal-close{background:var(--bg-secondary);width:30px;height:30px;color:var(--text-secondary);cursor:pointer;border-radius:6px;place-items:center;display:grid}.modal-close:hover{background:var(--card-hover);color:var(--text)}.modal-body{padding:24px}.modal-footer{border-top:1px solid var(--border);justify-content:flex-end;gap:10px;padding:16px 24px;display:flex}.toast-container{z-index:200;pointer-events:none;flex-direction:column;gap:10px;display:flex;position:fixed;bottom:24px;right:24px}.toast{background:var(--card);border:1px solid var(--border);border-left:4px solid var(--accent);color:var(--text);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);pointer-events:auto;align-items:center;gap:12px;min-width:280px;max-width:400px;padding:14px 18px;animation:.25s cubic-bezier(.16,1,.3,1) toastIn;display:flex}@keyframes toastIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:none}}.toast.success{border-left-color:var(--success)}.toast.danger{border-left-color:var(--danger)}.toast.warning{border-left-color:var(--warning)}.badge{border-radius:999px;align-items:center;gap:4px;padding:2px 8px;font-size:.72rem;font-weight:600;display:inline-flex}.badge-public{background:var(--accent-light);color:var(--accent)}.badge-private{background:var(--muted);color:var(--card)}.badge-encrypted{color:var(--success);background:#16a34a1f;border:1px solid #16a34a40}.activity-list{flex-direction:column;gap:12px;display:flex}.activity-item{border-radius:var(--radius-sm);background:var(--bg-secondary);border:1px solid var(--border);align-items:flex-start;gap:14px;padding:14px 16px;display:flex}.activity-icon{background:var(--card);width:34px;height:34px;color:var(--accent);border-radius:8px;flex-shrink:0;place-items:center;display:grid}.activity-content .activity-action{color:var(--text);font-size:.92rem;font-weight:500}.activity-content .activity-meta{color:var(--muted);margin-top:3px;font-size:.82rem}.settings-section{margin-bottom:28px}.settings-section h3{color:var(--text);align-items:center;gap:8px;margin-bottom:10px;font-size:1.05rem;display:flex}.toggle-row{border-bottom:1px solid var(--border);cursor:pointer;justify-content:space-between;align-items:center;padding:12px 0;display:flex}.toggle-switch{background:var(--border);cursor:pointer;border-radius:12px;flex-shrink:0;width:44px;height:24px;transition:background .2s;position:relative}.toggle-switch:after{content:"";width:20px;height:20px;box-shadow:var(--shadow);background:#fff;border-radius:50%;transition:transform .2s;position:absolute;top:2px;left:2px}.toggle-switch.active{background:var(--accent)}.toggle-switch.active:after{transform:translate(20px)}.share-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);margin-top:16px;padding:20px}.link-row{gap:8px;margin-top:10px;display:flex}.link-row input{flex:1}.dropdown{display:inline-block;position:relative}.dropdown-menu{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);z-index:40;min-width:170px;padding:6px;position:absolute;top:110%;right:0}.dropdown-item{width:100%;color:var(--text-secondary);cursor:pointer;text-align:left;background:0 0;border:none;border-radius:6px;align-items:center;gap:8px;padding:8px 12px;font-size:.88rem;transition:background .1s;display:flex}.dropdown-item:hover{background:var(--card-hover);color:var(--text)}.footer{border-top:1px solid var(--border);color:var(--muted);background:var(--card);margin-top:64px;padding:40px 0;font-size:.85rem}.footer-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:28px;margin-bottom:32px;display:grid}.footer h4{color:var(--text);margin-bottom:12px;font-size:.92rem;font-weight:600}.footer-links{flex-direction:column;gap:8px;list-style:none;display:flex}.footer-links a,.footer-links button{color:var(--muted);text-align:left;cursor:pointer;background:0 0;border:none;padding:0;font-size:.88rem;transition:color .15s}.footer-links a:hover,.footer-links button:hover{color:var(--accent)}.footer-bottom{border-top:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding-top:24px;font-size:.82rem;display:flex}.hidden-sm{display:inline-flex}.hidden-md{display:flex}@media (width<=768px){.hidden-md{display:none}.mobile-menu-btn{display:grid!important}}@media (width<=640px){.hidden-sm{display:none}.nav-right{gap:8px}.nav-link{font-size:.85rem}.auth-card{padding:32px 24px}.hero{padding:56px 0 36px}.modal{max-height:95vh;margin:16px}.footer-bottom{flex-direction:column;align-items:flex-start}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}