:root{color-scheme:light;--bg: #f5f6f8;--surface: #ffffff;--surface-muted: #f9fafb;--border: #e5e7eb;--border-strong: #d1d5db;--text: #111827;--text-muted: #6b7280;--text-faint: #9ca3af;--brand: #ed7f11;--brand-strong: #d76f08;--brand-tint: #fef1e2;--danger: #dc2626;--danger-tint: #fef2f2;--success: #16a34a;--radius-lg: 16px;--radius-md: 10px;--radius-sm: 7px;--shadow-sm: 0 1px 2px rgba(16, 24, 40, .04);--shadow-md: 0 2px 8px rgba(16, 24, 40, .06), 0 1px 2px rgba(16, 24, 40, .04);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}button,input{font-family:inherit}.shell{min-height:100vh;display:flex}.shell--centered{align-items:center;justify-content:center;padding:24px}.sidebar{width:240px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:20px 14px;gap:4px}.sidebar__brand{display:flex;align-items:center;gap:10px;padding:6px 10px 22px}.sidebar__mark{width:30px;height:30px;border-radius:9px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;flex-shrink:0}.sidebar__brand span{font-weight:700;font-size:14.5px;letter-spacing:-.01em}.sidebar__nav{display:flex;flex-direction:column;gap:2px}.sidebar__link{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--radius-sm);border:none;background:transparent;color:var(--text-muted);font-size:13.5px;font-weight:600;text-align:left;cursor:pointer}.sidebar__link:hover{background:var(--surface-muted);color:var(--text)}.sidebar__link--active{background:var(--brand-tint);color:var(--brand-strong)}.sidebar__spacer{flex:1}.main{flex:1;min-width:0;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 28px;background:var(--surface);border-bottom:1px solid var(--border)}.topbar__title{font-size:17px;font-weight:700;letter-spacing:-.01em}.topbar__subtitle{margin:2px 0 0;font-size:12.5px;color:var(--text-muted)}.content{padding:28px;max-width:980px;width:100%;margin:0 auto}.signin-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px 36px;max-width:380px;text-align:center;box-shadow:var(--shadow-md)}.signin-card__mark{width:52px;height:52px;border-radius:14px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;margin:0 auto 18px}.signin-card h1{font-size:19px;margin:0 0 8px}.signin-card p{color:var(--text-muted);font-size:13.5px;line-height:1.5;margin:0}.primary-button,.secondary-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:9px 16px;border-radius:var(--radius-sm);font-size:13.5px;font-weight:700;border:1px solid transparent;cursor:pointer;text-decoration:none;white-space:nowrap}.primary-button{background:var(--brand);color:#fff;margin-top:20px}.primary-button:hover{background:var(--brand-strong)}.primary-button:disabled{opacity:.6;cursor:not-allowed}.secondary-button{background:var(--surface);color:var(--text);border-color:var(--border-strong)}.secondary-button:hover{background:var(--surface-muted)}.icon-button{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius-sm);border:1px solid transparent;background:transparent;color:var(--text-muted);cursor:pointer}.icon-button:hover{background:var(--surface-muted);color:var(--text)}.icon-button--danger:hover{background:var(--danger-tint);color:var(--danger)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:24px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px 18px;box-shadow:var(--shadow-sm)}.stat-card__icon{width:34px;height:34px;border-radius:10px;background:var(--brand-tint);color:var(--brand-strong);display:flex;align-items:center;justify-content:center;margin-bottom:10px}.stat-card__value{font-size:22px;font-weight:800;letter-spacing:-.02em}.stat-card__label{font-size:12.5px;color:var(--text-muted);margin-top:2px}.section-title{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin:0 0 12px}.device-list{display:flex;flex-direction:column;gap:14px}.device-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px 20px;box-shadow:var(--shadow-sm)}.device-card__header{display:flex;align-items:center;gap:12px;margin-bottom:14px}.device-card__icon{width:36px;height:36px;border-radius:10px;background:var(--surface-muted);color:var(--text-muted);display:flex;align-items:center;justify-content:center;flex-shrink:0}.device-card__header h2{margin:0;font-size:14.5px}.device-card__header .muted{display:block;margin-top:1px}.folder-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.folder-row{display:flex;flex-direction:column;gap:2px;padding:11px 13px;background:var(--surface-muted);border-radius:var(--radius-md)}.folder-row__meta{font-size:12px;color:var(--text-faint);text-transform:capitalize}.dropzone{border:1.5px dashed var(--border-strong);border-radius:var(--radius-lg);padding:36px 20px;text-align:center;background:var(--surface);margin-bottom:20px;transition:border-color .15s,background .15s}.dropzone--active{border-color:var(--brand);background:var(--brand-tint)}.dropzone__icon{width:44px;height:44px;border-radius:12px;background:var(--brand-tint);color:var(--brand-strong);display:flex;align-items:center;justify-content:center;margin:0 auto 12px}.dropzone h3{margin:0 0 4px;font-size:14.5px}.dropzone p{margin:0 0 14px;font-size:12.5px;color:var(--text-muted)}.upload-list{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}.upload-row{display:flex;align-items:center;gap:12px;padding:10px 14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md)}.upload-row__name{flex:1;min-width:0;font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.upload-row__bar{width:100px;height:5px;border-radius:999px;background:var(--border);overflow:hidden;flex-shrink:0}.upload-row__bar-fill{height:100%;background:var(--brand);transition:width .2s ease}.upload-row__status{font-size:11.5px;color:var(--text-muted);width:70px;text-align:right;flex-shrink:0}.upload-row__status--error{color:var(--danger)}.file-table{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}.file-row{display:flex;align-items:center;gap:12px;padding:13px 18px;border-bottom:1px solid var(--border)}.file-row:last-child{border-bottom:none}.file-row__icon{width:32px;height:32px;border-radius:8px;background:var(--surface-muted);color:var(--text-muted);display:flex;align-items:center;justify-content:center;flex-shrink:0}.file-row__name{flex:1;min-width:0;font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-row__meta{font-size:12px;color:var(--text-muted);flex-shrink:0}.file-row__actions{display:flex;gap:4px;flex-shrink:0}.empty-state{text-align:center;padding:48px 20px;color:var(--text-muted)}.empty-state__icon{width:48px;height:48px;border-radius:14px;background:var(--surface-muted);color:var(--text-faint);display:flex;align-items:center;justify-content:center;margin:0 auto 14px}.empty-state p{font-size:13.5px;max-width:340px;margin:0 auto;line-height:1.5}.muted{color:var(--text-muted);font-size:13px}.error{color:var(--danger);font-size:13px}.loading-state{padding:40px 0;text-align:center;color:var(--text-muted);font-size:13.5px}