:root{--color-bg: #f8f8f8;--color-panel: #ffffff;--color-panel-muted: #f7faf9;--color-text: #1f2933;--color-muted: #66756f;--color-border: #d9e2df;--color-border-strong: #ccd6d4;--color-primary: #4f5f78;--color-on-primary: #ffffff;--color-primary-strong: #344158;--color-primary-soft: #edf1f7;--color-icon-bg: #eef2f7;--color-danger: #8a2c2c;--color-danger-bg: #fff6f5;--color-danger-border: #f0c5c5;--color-success: #2f6f54;--color-success-bg: #f0faf5;--color-success-border: #b9dfcb;color:var(--color-text);background:var(--color-bg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;color-scheme:light}:root[data-theme=dark]{--color-bg: #0f1011;--color-panel: #18191b;--color-panel-muted: #222326;--color-text: #f4f4f5;--color-muted: #a1a1aa;--color-border: #303136;--color-border-strong: #44464d;--color-primary: #7e95b9;--color-on-primary: #111113;--color-primary-strong: #d7d7d7;--color-primary-soft: #2b3856;--color-icon-bg: #26272c;--color-danger: #ffb9b2;--color-danger-bg: #351c1c;--color-danger-border: #6b3430;--color-success: #9bd4b4;--color-success-bg: #17251d;--color-success-border: #365644;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%;font-size:.95rem}body{margin:0;min-width:320px;background:var(--color-bg);overflow:hidden}button,input,select{font:15px}button{border:1px solid var(--color-border-strong);background:var(--color-panel);color:var(--color-text);min-height:34px;border-radius:3px;display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}.spin{animation:spin .9s linear infinite}input,select{width:100%;border:1px solid var(--color-border-strong);border-radius:3px;min-height:36px;padding:8px 10px;color:var(--color-text);background:var(--color-panel)}h1,h2{margin:0;line-height:1.1;letter-spacing:0}h1{font-size:20px}h2{font-size:15px}.app-shell{height:100vh;display:flex;flex-direction:column;overflow:hidden}.auth-shell{align-items:center;justify-content:center;padding:20px}.auth-card{width:min(360px,100%);display:flex;flex-direction:column;gap:10px;padding:18px;border:1px solid var(--color-border);border-radius:3px;background:var(--color-panel)}.auth-card .brand-logo{width:64px;height:64px}.auth-card p{margin:0 0 6px;color:var(--color-muted);line-height:1.4}.auth-error{padding:8px 10px;border:1px solid var(--color-danger-border);border-radius:3px;background:var(--color-danger-bg);color:var(--color-danger);font-size:13px}.topbar{min-height:58px;padding:10px 16px;border-bottom:1px solid var(--color-border);background:var(--color-panel);display:flex;align-items:center;justify-content:space-between;gap:12px}.border-0{border:none!important}.brand{display:flex;align-items:center;gap:5px}.brand-logo{width:50px;height:50px;flex:0 0 auto;background:url(../logo.png) center / contain no-repeat}:root[data-theme=dark] .brand-logo{background:#fff;mask:url(../logo.png) center / contain no-repeat;-webkit-mask:url(../logo.png) center / contain no-repeat}.brand span,.item-main span{color:var(--color-muted);font-size:12px;line-height:1.35}.layout{flex:1;display:grid;grid-template-columns:400px minmax(460px,1fr);gap:12px;padding:12px;min-height:0;overflow:hidden}.help-page{flex:1;min-height:0;overflow:auto;padding:12px}.help-hero{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:16px;max-width:1080px;margin:0 auto 12px;padding:18px;border:1px solid var(--color-border);border-radius:3px;background:var(--color-panel)}.help-hero h2{max-width:760px;margin-bottom:8px;font-size:26px;line-height:1.15}.help-hero p{max-width:780px;margin:0;color:var(--color-muted);line-height:1.5}.eyebrow{margin:0 0 6px;color:var(--color-primary-strong);font-size:11px;font-weight:700;text-transform:uppercase}.help-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;max-width:1080px;margin:0 auto 12px}.help-card{display:grid;grid-template-columns:32px minmax(0,1fr);gap:12px;padding:14px;border:1px solid var(--color-border);border-radius:3px;background:var(--color-panel)}.help-step{width:28px;height:28px;display:grid;place-items:center;border:1px solid var(--color-primary);border-radius:3px;background:var(--color-primary-soft);color:var(--color-primary-strong);font-weight:700}.help-card h3{margin:0 0 6px;font-size:15px}.help-card p{margin:0 0 8px;color:var(--color-muted);line-height:1.5}.help-card ul{margin:0;padding-left:18px;color:var(--color-text)}.help-card li{margin:5px 0;line-height:1.4}.sidebar{display:flex;flex-direction:column;gap:12px;min-width:0;min-height:0}.panel{background:var(--color-panel);border:1px solid var(--color-border);border-radius:3px;padding:12px;min-width:0}.form-panel,.device-panel,.source-panel,.source-form-body{display:flex;flex-direction:column;gap:8px}.field{display:flex;flex-direction:column;gap:4px}.field span{color:var(--color-muted);font-size:12px;line-height:1.3}.primary{background:var(--color-primary);color:var(--color-on-primary);border-color:var(--color-primary)}.segmented{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px}.segmented button{min-width:0;font-size:12px}.segmented .active{background:var(--color-primary-soft);border-color:var(--color-primary);color:var(--color-primary-strong)}.source-list{display:flex;flex-direction:column;gap:6px;overflow:visible}.table-list{display:flex;flex-direction:column;gap:6px;overflow:auto}.table-list{flex:1;min-height:0}.serif{font-family:ui-serif,Georgia,Cambria,Times New Roman,Times,serif}.source-row{display:flex;align-items:center;gap:7px;justify-content:flex-start;width:100%;min-height:42px;padding:6px 8px;border:1px solid var(--color-border-strong);border-radius:3px;background:var(--color-panel);color:var(--color-text);cursor:pointer;-webkit-user-select:none;user-select:none}.source-row.selected{background:var(--color-primary-soft);border-color:var(--color-primary)}.source-row.dragging{opacity:.55}.source-row.drag-over{border-color:var(--color-primary);box-shadow:inset 0 0 0 1px var(--color-primary)}.source-drag-icon{flex:0 0 auto;color:var(--color-muted);cursor:grab}.source-type{min-width:44px;color:var(--color-primary);font-size:11px;text-transform:uppercase}.source-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.source-menu-wrap{position:relative;flex:0 0 auto;margin-left:auto}.source-menu-button{width:30px;min-width:30px;min-height:30px;padding:0;border:none}.source-menu{position:absolute;right:0;top:calc(100% + 6px);z-index:6;width:140px;padding:4px;border:1px solid var(--color-border-strong);border-radius:3px;background:var(--color-panel);box-shadow:0 10px 24px #11181629}.source-menu button{width:100%;justify-content:flex-start;min-height:32px;padding:0 8px;border-color:transparent}.source-menu .danger-menu-item{color:var(--color-danger)}.browse-panel{min-height:0;display:flex;flex-direction:column;overflow:hidden}.panel-header{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}.heading-line{display:flex;align-items:center;gap:8px;min-width:0}.toolbar,.topbar-actions,.row-actions{display:flex;align-items:center;gap:6px;justify-content:end}.search-bar{display:grid;grid-template-columns:minmax(0,1fr) auto auto auto;gap:6px;margin-bottom:10px}.search-bar button{padding:0 10px}.search-bar button[aria-label="Clear search"],.row-actions button,.toolbar button,.file-button,.sort-button{width:36px;min-width:36px;padding:0}.sort-button.active{background:var(--color-primary-soft);border-color:var(--color-primary);color:var(--color-primary-strong)}.sort-menu-wrap{position:relative}.sort-menu{position:absolute;right:0;top:calc(100% + 6px);z-index:5;width:150px;padding:4px;border:1px solid var(--color-border-strong);border-radius:3px;background:var(--color-panel);box-shadow:0 10px 24px #11181629}.sort-menu button{width:100%;justify-content:flex-start;border-color:transparent;padding:0 8px}.sort-menu button.active{background:var(--color-primary-soft);color:var(--color-primary-strong)}.toolbar button:first-child{width:auto;min-width:58px;padding:0 10px}.pagination-bar{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:10px;color:var(--color-muted);font-size:12px}.pagination-actions{display:flex;align-items:center;gap:6px}.pagination-actions button{padding:0 10px}.item-row,.empty-state{min-height:56px;border:1px solid var(--color-border);border-radius:3px;display:grid;align-items:center;gap:10px;padding:8px}.item-row{grid-template-columns:42px minmax(0,1fr) auto}.sendable-row{grid-template-columns:42px minmax(0,1fr) 78px}.navigation-row{grid-template-columns:42px minmax(0,1fr) 36px}.local-library-row{grid-template-columns:42px minmax(0,1fr) 130px}.clickable-row{cursor:pointer}.clickable-row:hover,.clickable-row:focus-visible{border-color:var(--color-border-strong);background:var(--color-panel-muted)}.clickable-row:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.empty-state{color:var(--color-muted);background:var(--color-panel-muted)}.status-state{grid-template-columns:minmax(0,1fr) auto;min-height:44px}.status-state span{min-width:0}.status-state button{width:28px;min-width:28px;min-height:28px;padding:0;background:transparent}.error-state{color:var(--color-danger);border-color:var(--color-danger-border);background:var(--color-danger-bg)}.success-state{color:var(--color-success);border-color:var(--color-success-border);background:var(--color-success-bg)}.item-icon{width:28px;height:28px;display:grid;place-items:center;border-radius:3px;background:var(--color-icon-bg);color:var(--color-primary)}.item-cover{width:36px;height:48px;overflow:hidden;border:1px solid var(--color-border);border-radius:3px;background:var(--color-panel-muted)}.item-cover img{display:block;width:100%;height:100%;object-fit:cover}.item-main{min-width:0}.item-title-line{display:flex;align-items:center;min-width:0;gap:8px}.item-title-line strong,.item-main>strong{display:block;min-width:0;white-space:normal;overflow-wrap:anywhere;text-transform:capitalize}.file-type-tag{flex:0 0 auto;justify-self:end;min-width:36px;padding:2px 6px;border:1px solid var(--color-border);border-radius:3px;background:var(--color-panel-muted);color:var(--color-muted);font-size:10px;font-weight:700;line-height:1.2;text-align:center;text-transform:uppercase}.file-type-epub{color:var(--color-primary-strong);border-color:var(--color-primary);background:var(--color-primary-soft)}.job-log{max-height:160px;margin:2px 0 0;padding:8px;overflow:auto;border:1px solid var(--color-border);border-radius:3px;background:var(--color-panel-muted);color:var(--color-muted)}.job-log code{display:block;white-space:pre-wrap;overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:12px;line-height:1.45}.help-card code{background:var(--color-border-strong);padding:2px;border:1px solid var(--color-text);border-radius:3px;white-space:pre-wrap;overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:12px}.file-button{position:relative;overflow:hidden;border:1px solid var(--color-border-strong);background:var(--color-panel);color:var(--color-text);border-radius:3px;min-height:34px;cursor:pointer;display:grid;place-items:center}.file-button svg{cursor:pointer;pointer-events:none}.file-button input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}progress{width:100%;height:8px;accent-color:var(--color-primary)}.toast{position:fixed;right:16px;bottom:16px;max-width:min(360px,calc(100vw - 32px));padding:10px 12px;border:1px solid;border-radius:3px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;box-shadow:0 10px 24px #11181629}.toast span{min-width:0}.toast button{width:28px;min-width:28px;min-height:28px;padding:0;background:transparent}.success-toast{color:var(--color-success);border-color:var(--color-success-border);background:var(--color-success-bg)}.error-toast{color:var(--color-danger);border-color:var(--color-danger-border);background:var(--color-danger-bg)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:10;display:grid;place-items:center;padding:16px;background:#111816f2}.modal-card{width:min(440px,100%);max-height:calc(100vh - 32px);overflow:auto;box-shadow:0 18px 60px #1118163d}.modal-actions{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px;margin-top:2px}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:1100px){.layout{grid-template-columns:280px minmax(320px,1fr)}}@media(max-width:760px){body{overflow:auto}.topbar{align-items:flex-start;flex-direction:column}.app-shell{height:auto;min-height:100vh;overflow:visible}.layout{grid-template-columns:1fr;align-content:start;overflow:visible}.help-page{overflow:visible}.help-hero,.help-grid{grid-template-columns:1fr}.help-hero{align-items:stretch}.help-hero h2{font-size:22px}.sidebar{align-self:start}.source-drag-icon{display:none}.source-menu{width:180px;padding:6px}.source-menu button{min-height:44px;padding:0 12px;font-size:15px}.sort-menu{width:180px;padding:6px}.sort-menu button{min-height:44px;padding:0 12px;font-size:15px}.search-bar{grid-template-columns:minmax(0,1fr) auto auto auto}.browse-panel,.table-list{overflow:visible}.table-list{flex:none}.pagination-bar{align-items:stretch;flex-direction:column}.pagination-actions{display:grid;grid-template-columns:1fr 1fr}}