:root{--paper:#f6f3ec;--paper-2:#eae6db;--ink:#111b29;--muted:#5f6c85;--line:#dcd8cc;--primary:#152840;--accent:#077880;--accent-bright:#00adb5;--heatmap-empty:#e7e2d6;--panel:rgba(255,255,255,.62);--shadow:0 20px 50px rgba(17,27,41,.09);--radius:24px;--sidebar:228px;--font-body:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--font-display:ui-rounded,"SF Pro Rounded","Hiragino Maru Gothic ProN","Nunito","Quicksand","Segoe UI",system-ui,sans-serif;font-family:var(--font-body);color:var(--ink);background:var(--paper)}
:root.dark{--paper:#0c1320;--paper-2:#121b2a;--ink:#e9eef5;--muted:#94a3b8;--line:#243146;--primary:#2bb8c1;--accent:#5fd3da;--heatmap-empty:#1c2637;--panel:#131c2b;--shadow:0 20px 50px rgba(0,0,0,.4)}
:root.dark .sidebar{background:#0a1019}
*{box-sizing:border-box}body{margin:0;background:var(--paper);min-height:100vh}.app-shell{display:grid;grid-template-columns:var(--sidebar) 1fr;min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);padding:28px 20px;display:flex;flex-direction:column;border-right:1px solid var(--line);background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(20px)}.brand{display:flex;gap:11px;align-items:center;text-decoration:none;color:var(--ink);font-family:var(--font-display);font-size:23px;font-weight:800;letter-spacing:-.02em;margin:0 8px 36px}.brand-mark{display:grid;place-items:center;flex:none;width:36px;height:36px;border-radius:12px;background:#fdfbf4;box-shadow:0 4px 14px color-mix(in srgb,var(--primary) 20%,transparent)}.brand-mark img{display:block;width:30px;height:30px;object-fit:contain}.nav{display:grid;gap:6px}.nav-item{appearance:none;border:0;background:transparent;color:var(--muted);font:inherit;font-weight:650;text-align:left;padding:12px 13px;border-radius:12px;cursor:pointer;display:flex;gap:12px;align-items:center}.nav-item:hover,.nav-item.active{color:var(--ink);background:var(--panel)}.nav-item.active{box-shadow:inset 3px 0 var(--primary)}.sidebar-foot{margin-top:auto;color:var(--muted);font-size:12px;display:flex;align-items:center;gap:8px;padding:10px}.privacy-dot{width:7px;height:7px;border-radius:50%;background:var(--accent-bright);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent-bright) 18%,transparent)}.main{grid-column:2;padding:38px clamp(28px,4vw,64px) 70px;max-width:1500px;width:100%;margin:0 auto}.topbar{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:42px}.topbar h1,.section-heading h2,.library-toolbar h2,.devices-header h2,.empty-state h2,.modal h2{font-family:var(--font-display);font-weight:500;letter-spacing:-.025em}.topbar h1{font-size:clamp(34px,4vw,52px);margin:3px 0 0}.eyebrow{text-transform:uppercase;letter-spacing:.17em;font-size:11px;font-weight:800;color:var(--muted);margin:0}.top-actions{display:flex;gap:10px}.primary,.icon-button,.text-button{border:0;font:inherit;cursor:pointer}.secondary-link{display:inline-flex;align-items:center;text-decoration:none;color:var(--ink);font-weight:700;border:1px solid var(--line);background:var(--panel);padding:11px 14px;border-radius:13px}.primary{background:var(--primary);color:var(--paper);padding:12px 17px;border-radius:13px;font-weight:750;box-shadow:0 8px 18px color-mix(in srgb,var(--primary) 24%,transparent)}.primary:hover{transform:translateY(-1px)}.primary.large{padding:15px 22px}.primary.full{width:100%}.icon-button{width:44px;height:44px;border-radius:13px;background:var(--panel);border:1px solid var(--line);color:var(--ink)}.text-button{background:none;color:var(--accent);font-weight:700}.view{display:none}.view.active{display:block}.hidden{display:none!important}.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:44px}.metric{padding:21px;border:1px solid var(--line);border-radius:18px;background:var(--panel)}.metric span{display:block;color:var(--muted);font-size:12px;margin-bottom:12px}.metric strong{display:block;font-family:var(--font-display);font-size:29px;font-weight:500}.metric small{color:var(--muted)}.section-block{margin:8px 0 46px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:18px}.section-heading h2{margin:4px 0 0;font-size:28px}.section-heading.compact h3{margin:5px 0 0;font-family:var(--font-display);font-size:22px}.shelf{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:18px}.book-card{min-width:0;cursor:pointer}.book-card:hover .cover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(0,0,0,.18)}.cover{aspect-ratio:2/3;transition:.18s ease;border-radius:7px 10px 10px 7px;overflow:hidden;background:linear-gradient(145deg,#2b3f5e,#101a29);box-shadow:0 11px 25px rgba(0,0,0,.14);position:relative;margin-bottom:12px}.cover::after{content:"";position:absolute;inset:0;border-left:1px solid rgba(255,255,255,.16);box-shadow:inset 8px 0 13px rgba(0,0,0,.09);pointer-events:none}.cover img{width:100%;height:100%;object-fit:cover;display:block}.cover-placeholder{height:100%;display:flex;flex-direction:column;justify-content:flex-end;padding:14px;color:#fdfbf4}.cover-placeholder b{font-family:var(--font-display);font-size:16px;line-height:1.05}.cover-placeholder span{font-size:10px;opacity:.75;margin-top:7px}.book-card h3{font-size:14px;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;margin:0 0 4px}.book-card p{font-size:12px;color:var(--muted);margin:0}.book-progress{display:block;width:100%;height:3px;margin-top:9px;border:0;border-radius:9px;overflow:hidden;background:var(--line);appearance:none}.book-progress::-webkit-progress-bar{background:var(--line)}.book-progress::-webkit-progress-value{background:var(--accent)}.book-progress::-moz-progress-bar{background:var(--accent)}.insight-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:16px}.panel{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);padding:24px}.muted{color:var(--muted);line-height:1.6}.quote-panel{display:flex;flex-direction:column;justify-content:center}.quote-panel blockquote{font:500 26px/1.35 var(--font-display);margin:16px 0}.library-toolbar,.devices-header{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:30px}.library-toolbar h2,.devices-header h2{font-size:34px;margin:5px 0 0}.library-actions{display:flex;align-items:center;gap:16px}.search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--panel);border-radius:13px;padding:0 13px}.search input{width:240px;border:0;outline:0;background:transparent;color:var(--ink);padding:12px 0;font:inherit}.book-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:28px 18px}.device-list{display:grid;gap:10px;margin-bottom:24px}.device-row{display:flex;align-items:center;justify-content:space-between;border:1px solid var(--line);background:var(--panel);padding:16px 18px;border-radius:16px}.device-id{display:flex;align-items:center;gap:13px}.device-icon{display:grid;place-items:center;width:42px;height:50px;border:2px solid var(--accent);border-radius:6px}.danger{border:1px solid var(--line);background:transparent;color:var(--muted);padding:8px 11px;border-radius:10px;cursor:pointer}.setup-panel{max-width:760px}.setup-panel li{margin:9px 0;line-height:1.5}.empty-state{max-width:700px;margin:8vh auto;text-align:center}.empty-state h2{font-size:48px;margin:15px 0}.empty-state>p:not(.eyebrow){color:var(--muted);font-size:17px;line-height:1.7}.empty-state small{display:block;margin-top:16px;color:var(--muted)}.empty-art{margin:0 auto 26px;width:min(340px,80%)}.empty-art img{display:block;width:100%;height:auto;filter:drop-shadow(0 16px 28px rgba(9,15,25,.22))}:root.dark .empty-art{padding:18px 20px;border-radius:24px;background:#fdfbf4;box-shadow:0 24px 60px rgba(0,0,0,.4)}:root.dark .empty-art img{filter:none}.modal{border:1px solid var(--line);border-radius:26px;background:var(--paper);color:var(--ink);padding:30px;max-width:600px;width:calc(100% - 28px);box-shadow:0 30px 100px rgba(0,0,0,.25)}.modal.small{max-width:470px}.modal::backdrop{background:rgba(8,14,24,.55);backdrop-filter:blur(6px)}.modal-close{position:absolute;right:17px;top:14px;border:0;background:transparent;color:var(--muted);font-size:28px;cursor:pointer}.modal h2{font-size:31px;margin:6px 0 9px}.drop-zone{display:flex;flex-direction:column;align-items:center;justify-content:center;border:1.5px dashed var(--line);background:var(--panel);border-radius:20px;min-height:190px;margin-top:22px;cursor:pointer}.drop-zone:hover,.drop-zone.drag{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 6%,var(--panel))}.drop-zone input{display:none}.drop-icon{font-size:29px;margin-bottom:10px}.drop-zone span:last-child{color:var(--muted);font-size:13px;margin-top:5px}.progress-wrap{margin-top:20px}.progress{height:7px;border-radius:10px;overflow:hidden;background:var(--paper-2)}.progress i{display:block;width:0;height:100%;background:var(--accent);transition:width .25s}.result{margin-top:18px;padding:14px;border-radius:14px;background:var(--panel);border:1px solid var(--line);line-height:1.6}.field{display:grid;gap:8px;margin:20px 0;font-size:13px;font-weight:700}.field input{padding:12px;border:1px solid var(--line);border-radius:11px;background:var(--panel);color:var(--ink);font:inherit}.pair-code{text-align:center;margin-top:20px;border:1px solid var(--line);border-radius:16px;padding:20px;background:var(--panel)}.pair-code span,.pair-code small{display:block;color:var(--muted)}.pair-code strong{display:block;font:600 34px/1.3 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.13em;margin:5px 0}.toast{position:fixed;right:22px;bottom:22px;transform:translateY(120px);opacity:0;transition:.25s;background:var(--ink);color:var(--paper);padding:12px 15px;border-radius:12px;box-shadow:var(--shadow);z-index:20}.toast.show{transform:translateY(0);opacity:1}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--paper-2);padding:.14em .36em;border-radius:5px}
@media(max-width:1100px){:root{--sidebar:84px}.brand span:last-child,.nav-item:not(.active){font-size:0}.nav-item span{font-size:18px}.nav-item.active{font-size:0}.nav-item.active span{font-size:18px}.sidebar-foot span{display:none}.shelf{grid-template-columns:repeat(4,1fr)}.book-grid{grid-template-columns:repeat(5,1fr)}.metric-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.app-shell{display:block}.sidebar{position:fixed;z-index:10;inset:auto 10px 10px;width:auto;height:62px;flex-direction:row;align-items:center;padding:8px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.brand,.sidebar-foot{display:none}.nav{display:flex;width:100%;gap:4px}.nav-item,.nav-item.active,.nav-item:not(.active){justify-content:center;font-size:0;width:58px}.nav-item span,.nav-item.active span,.nav-item:not(.active) span{font-size:19px}.main{padding:24px 18px 100px}.topbar{align-items:flex-start}.topbar h1{font-size:36px}.top-actions .icon-button{display:none}.primary{padding:11px 12px}.metric-grid{grid-template-columns:1fr 1fr}.shelf{grid-template-columns:repeat(3,1fr);gap:12px}.shelf .book-card:nth-child(n+4){display:none}.insight-grid{grid-template-columns:1fr}.book-grid{grid-template-columns:repeat(3,1fr);gap:24px 12px}.library-toolbar,.devices-header{align-items:flex-start;flex-direction:column}.search{width:100%}.search input{width:100%}.empty-state h2{font-size:36px}.heatmap{gap:5px}}

.book-detail{display:grid;grid-template-columns:180px 1fr;gap:26px}.book-detail .cover{margin:0}.book-detail h2{font:500 34px/1.08 var(--font-display);margin:6px 0 7px}.book-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:22px 0}.book-meta div{padding:12px;background:var(--panel);border:1px solid var(--line);border-radius:13px}.book-meta span{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin-bottom:4px}.book-meta strong{font-size:14px}.session-list{display:grid;gap:7px;max-height:240px;overflow:auto}.session-row{display:flex;justify-content:space-between;gap:15px;padding:9px 0;border-bottom:1px solid var(--line);font-size:13px}.session-row span:last-child{color:var(--muted)}
@media(max-width:620px){.book-detail{grid-template-columns:110px 1fr;gap:16px}.book-detail h2{font-size:25px}.book-meta{grid-template-columns:1fr 1fr}.library-actions{width:100%;align-items:stretch;flex-direction:column}.devices-header .top-actions{width:100%}.devices-header .top-actions>*{flex:1;justify-content:center}}

.pair-help{margin:1rem 0;padding:.85rem 1rem;border:1px solid var(--line);border-radius:14px;background:var(--paper-2);font-size:.92rem;line-height:1.45}.pair-help strong{font-weight:700}.pair-help code{font-size:.88em}

/* kovi 0.2 */
.book-card{display:block;color:inherit;text-decoration:none}.rhythm-block{margin-top:0}.heatmap-panel{padding:22px 24px 18px;overflow:hidden}.heatmap-layout{display:grid;grid-template-columns:32px minmax(0,1fr);gap:8px;align-items:start;overflow-x:auto;padding-bottom:8px}.heatmap-weekdays{display:grid;grid-template-rows:repeat(7,11px);gap:4px;padding-top:0;color:var(--muted);font-size:9px;line-height:11px}.heatmap{display:grid;grid-template-columns:none;grid-template-rows:repeat(7,11px);grid-auto-flow:column;grid-auto-columns:11px;gap:4px;margin:0;width:max-content;min-width:100%;justify-content:space-between}.heatmap .day,.heatmap-legend .day{width:11px;height:11px;aspect-ratio:auto;border-radius:2px;background:var(--heatmap-empty);display:block}.heatmap .day.future{opacity:.28}.heatmap .day.l1,.heatmap-legend .day.l1{background:color-mix(in srgb,var(--accent) 25%,var(--paper))}.heatmap .day.l2,.heatmap-legend .day.l2{background:color-mix(in srgb,var(--accent) 45%,var(--paper))}.heatmap .day.l3,.heatmap-legend .day.l3{background:color-mix(in srgb,var(--accent) 68%,var(--paper))}.heatmap .day.l4,.heatmap-legend .day.l4{background:var(--accent)}.heatmap-months{margin:0 0 7px 40px;display:grid;grid-template-columns:repeat(12,1fr);min-width:760px;color:var(--muted);font-size:10px}.heatmap-legend{display:flex;align-items:center;gap:4px;color:var(--muted);font-size:10px}.heatmap-legend .day{flex:none}
.book-card .cover{position:relative}.book-read-badge{position:absolute;right:8px;bottom:8px;padding:4px 8px;border-radius:999px;background:var(--primary);color:var(--paper);box-shadow:0 3px 12px rgba(0,0,0,.2);font-size:9px;font-weight:850;letter-spacing:.06em;text-transform:uppercase}
.back-button{border:0;background:transparent;color:var(--accent);font:700 13px/1 inherit;padding:0;margin:0 0 24px;cursor:pointer}.book-page{display:grid;grid-template-columns:minmax(190px,220px) minmax(0,760px);gap:44px;align-items:start;max-width:1040px}.book-page aside{position:sticky;top:28px}.book-page-cover{width:100%;margin:0 0 15px}.book-page-content h2{font:500 44px/1.08 var(--font-display);margin:5px 0 9px}.book-byline{color:var(--muted);font-size:16px;margin:0 0 26px}.secondary-action{border:1px solid var(--line);background:var(--panel);color:var(--ink);padding:11px 14px;border-radius:12px;font-weight:700;cursor:pointer}.secondary-action:hover{border-color:var(--accent)}.book-highlights{margin-top:36px}.annotation-list{display:grid;gap:12px}.annotation-card{border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:18px 20px}.annotation-top{display:flex;justify-content:space-between;gap:12px;align-items:center;color:var(--muted);font-size:11px}.annotation-kind{color:var(--accent);text-transform:uppercase;letter-spacing:.1em;font-weight:800}.annotation-card blockquote{margin:14px 0 8px;font:500 18px/1.55 var(--font-display)}.annotation-note{margin:12px 0 6px;padding:11px 13px;border-left:3px solid var(--accent);background:var(--paper-2);border-radius:0 10px 10px 0;line-height:1.55}.annotation-location{margin:12px 0 0;color:var(--muted);font-size:11px}.annotation-empty{padding:18px 20px}.annotation-empty strong{display:block;margin-bottom:7px}.pair-code #pairStatusText{margin:12px 0 0}.full{width:100%}
@media(max-width:760px){.heatmap-panel{padding:18px 14px}.heatmap-months{margin-left:40px}.heatmap-legend{display:none}.book-page{grid-template-columns:110px minmax(0,1fr);gap:18px}.book-page aside{position:static}.book-page-content h2{font-size:29px}.book-page .book-meta{grid-template-columns:1fr 1fr}.annotation-card{padding:15px}.annotation-card blockquote{font-size:16px}.book-page aside .secondary-action{font-size:11px;padding:9px}}
@media(max-width:520px){.book-page{display:block}.book-page aside{display:grid;grid-template-columns:100px 1fr;align-items:end;gap:14px;margin-bottom:24px}.book-page-cover{margin:0}.book-page aside .secondary-action{margin-bottom:4px}.heatmap-layout{grid-template-columns:26px minmax(0,1fr)}.heatmap-months{margin-left:34px}}
.device-title-line{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.status-badge{display:inline-flex;align-items:center;padding:3px 7px;border-radius:999px;font-size:10px;font-weight:800;letter-spacing:.03em}.status-badge.warning{background:color-mix(in srgb,#c98c35 16%,var(--panel));color:#9a641f;border:1px solid color-mix(in srgb,#c98c35 35%,var(--line))}.device-warning{margin-top:5px;font-size:12px;color:var(--muted)}.device-warning a{color:var(--accent);font-weight:750}
.reading-status{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:0 0 22px;padding:13px 15px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}.reading-status>div:first-child{display:flex;align-items:center;gap:10px;min-width:0}.reading-status p{margin:0;color:var(--muted);font-size:12px;line-height:1.4}.status-badge.read-state{flex:none;border:1px solid var(--line);background:var(--paper-2);color:var(--muted)}.status-badge.read-state.complete{border-color:color-mix(in srgb,var(--accent) 38%,var(--line));background:color-mix(in srgb,var(--accent) 13%,var(--panel));color:var(--accent)}.reading-status-actions{display:flex;align-items:center;gap:10px;flex:none}.reading-status-actions .text-button{padding:7px 0;background:transparent;color:var(--accent);font-size:11px;font-weight:750}
@media(max-width:620px){.reading-status{align-items:flex-start;flex-direction:column}.reading-status>div:first-child{align-items:flex-start}.reading-status-actions{width:100%;justify-content:space-between}}

/* Dashboard date filters and reading trend */
.icon-button{display:grid;place-items:center;flex:none}
.range-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:-18px 0 28px;padding:12px 14px;border:1px solid var(--line);border-radius:16px;background:var(--panel)}
.range-current{display:grid;gap:2px;min-width:max-content}.range-current span{font-size:10px;text-transform:uppercase;letter-spacing:.13em;color:var(--muted);font-weight:800}.range-current strong{font-size:13px;font-weight:750}
.range-buttons{display:flex;align-items:center;gap:6px;min-width:0;overflow-x:auto;padding:1px;scrollbar-width:thin}
.range-button{appearance:none;border:1px solid transparent;background:transparent;color:var(--muted);font:inherit;font-size:12px;font-weight:700;white-space:nowrap;padding:8px 10px;border-radius:10px;cursor:pointer}
.range-button:hover{color:var(--ink);background:var(--paper-2)}.range-button.active{color:var(--ink);border-color:var(--line);background:var(--paper)}
.custom-range{display:flex;align-items:end;gap:10px;margin:-16px 0 28px;padding:14px;border:1px solid var(--line);border-radius:16px;background:var(--panel)}.custom-range label{display:grid;gap:6px;color:var(--muted);font-size:11px;font-weight:750}.custom-range input{min-width:150px;padding:9px 10px;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);font:inherit}.custom-range .primary{padding:10px 14px}

.heatmap-panel{overflow:hidden}.heatmap-layout{display:grid;grid-template-columns:32px minmax(0,1fr);gap:8px;align-items:start;overflow:hidden;padding-bottom:0}.heatmap-scroll{min-width:0;overflow-x:auto;padding-bottom:8px}.heatmap-months{margin:0 0 7px;display:grid;grid-template-columns:none;grid-auto-flow:column;grid-auto-columns:11px;gap:4px;width:max-content;min-width:0;color:var(--muted);font-size:10px;line-height:11px;justify-content:start}.heatmap-months span{white-space:nowrap;overflow:visible}.heatmap{min-width:0;justify-content:start}.heatmap.stretched,.heatmap-months.stretched{min-width:100%;justify-content:space-between}.heatmap .day.outside{opacity:.22;background:var(--heatmap-empty)}

.trend-panel{padding:22px 24px 18px}.trend-summary{display:flex;gap:34px;margin-bottom:12px}.trend-summary div{display:grid;gap:3px}.trend-summary span{font-size:10px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-weight:800}.trend-summary strong{font:500 24px/1.2 var(--font-display)}.line-chart{width:100%;min-height:270px;overflow:hidden}.line-chart svg{display:block;width:100%;height:270px;overflow:visible}.chart-grid{stroke:var(--line);stroke-width:1}.chart-axis{fill:var(--muted);font:10px Inter,ui-sans-serif,system-ui,sans-serif}.chart-line{fill:none;stroke:var(--accent);stroke-width:2.5;stroke-linejoin:round;stroke-linecap:round}.chart-dot{fill:var(--paper);stroke:var(--accent);stroke-width:2}.chart-empty{min-height:220px;display:grid;place-items:center;color:var(--muted);font-size:13px;border-top:1px solid var(--line)}.trend-panel>.muted,.heatmap-panel>.muted{margin:12px 0 0;font-size:12px}

@media(max-width:760px){
  .topbar{align-items:flex-start;gap:12px}.top-actions{gap:8px;flex:none}.top-actions .icon-button{display:grid}.topbar .primary{font-size:12px;padding:11px 10px}.icon-button{width:42px;height:42px}
  .range-toolbar{display:block;margin-top:-20px;padding:10px 10px 9px}.range-current{display:flex;align-items:baseline;gap:8px;margin:0 4px 8px}.range-buttons{margin:0 -2px;padding:1px 2px 3px}.range-button{font-size:11px;padding:7px 9px}
  .custom-range{align-items:stretch;flex-wrap:wrap}.custom-range label{flex:1 1 130px}.custom-range input{width:100%;min-width:0}.custom-range .primary{flex:1 1 100%;justify-content:center}
  .heatmap-layout{grid-template-columns:30px minmax(0,1fr)}.heatmap-months{margin-left:0}.heatmap.stretched,.heatmap-months.stretched{min-width:0;justify-content:start}
  .trend-panel{padding:18px 14px 14px}.trend-summary{gap:24px}.line-chart,.line-chart svg{min-height:250px;height:250px}.chart-axis{font-size:9px}
}
@media(max-width:520px){
  .topbar h1{font-size:31px}.topbar .primary{max-width:142px;line-height:1.15}.metric{padding:16px}.metric strong{font-size:25px}.metric small{font-size:11px}
  .section-heading h2{font-size:25px}.trend-summary strong{font-size:22px}.heatmap-layout{grid-template-columns:26px minmax(0,1fr)}
}
@media(max-width:520px){.topbar{flex-wrap:wrap}.topbar>div:first-child{flex:1 1 150px;min-width:0}.top-actions{margin-left:auto}}

/* Responsive, no-scroll reading heatmap. The cell size is based on a 53-week
   reference year, so changing the filter reveals fewer columns instead of
   zooming those columns to fill the panel. */
.heatmap-scroll{min-width:0;max-width:100%;overflow:hidden!important;padding-bottom:0;--heat-weeks:53;--heat-gap:3px;--heat-cell:11px}
.heatmap{display:grid;width:max-content;max-width:100%;min-width:0;grid-template-columns:repeat(var(--heat-weeks),var(--heat-cell));grid-template-rows:repeat(7,var(--heat-cell));grid-auto-flow:column;grid-auto-columns:initial;column-gap:var(--heat-gap);row-gap:var(--heat-gap);justify-content:start;margin:0}
.heatmap.stretched{min-width:0;justify-content:start}
.heatmap .day{width:var(--heat-cell);height:var(--heat-cell);min-width:0;aspect-ratio:auto;border-radius:clamp(1px,18%,2px)}
.heatmap-months{display:grid;width:max-content;max-width:100%;min-width:0;grid-template-columns:repeat(var(--heat-weeks),var(--heat-cell));grid-template-rows:11px;grid-auto-flow:row;grid-auto-columns:initial;column-gap:var(--heat-gap);row-gap:0;justify-content:start;margin:0 0 7px;line-height:11px;overflow:visible}
.heatmap-months.stretched{min-width:0;justify-content:start}
.heatmap-months span{min-width:0;white-space:nowrap;overflow:visible}
.heatmap-weekdays{padding-top:18px;grid-template-rows:repeat(7,var(--heat-cell));gap:var(--heat-gap);line-height:var(--heat-cell)}

/* Interactive reading trend */
.line-chart{position:relative;touch-action:pan-y}
.chart-hit-area{fill:transparent;pointer-events:all;cursor:crosshair}
.chart-dot.key{cursor:pointer;pointer-events:all}
.chart-dot.key:focus{outline:none;stroke-width:4}
.chart-hover-guide{stroke:var(--muted);stroke-width:1;stroke-dasharray:3 4;opacity:.65;pointer-events:none}
.chart-hover-dot{fill:var(--accent);stroke:var(--paper);stroke-width:3;pointer-events:none}
.chart-tooltip{position:absolute;z-index:3;transform:translate(-50%,-100%);min-width:112px;max-width:190px;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--ink);color:var(--paper);box-shadow:0 8px 24px rgba(0,0,0,.16);pointer-events:none;text-align:center}
.chart-tooltip strong,.chart-tooltip span{display:block}.chart-tooltip strong{font-size:11px;line-height:1.25}.chart-tooltip span{margin-top:3px;font-size:12px;font-weight:750}

/* Reading calendar */
.calendar-header{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}.calendar-header h2{font:500 34px/1.08 var(--font-display);letter-spacing:-.025em;margin:5px 0 0}.calendar-header-actions{display:flex;align-items:flex-end;gap:12px;flex-wrap:wrap;justify-content:flex-end}.calendar-date-search{display:grid;gap:5px}.calendar-date-search label{color:var(--muted);font-size:9px;text-transform:uppercase;letter-spacing:.08em;font-weight:800}.calendar-date-search-controls{display:flex;align-items:center;gap:7px}.calendar-date-search input{height:40px;min-width:155px;padding:0 10px;border:1px solid var(--line);border-radius:11px;background:var(--panel);color:var(--ink);font:inherit;color-scheme:light}:root.dark .calendar-date-search input{color-scheme:dark}.calendar-date-search .secondary-action{height:40px;padding:0 12px}.calendar-controls{display:flex;align-items:center;gap:8px}.calendar-arrow{width:40px;height:40px}.calendar-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,330px);gap:18px;align-items:start}.calendar-panel{padding:20px}.calendar-month-heading{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:18px}.calendar-month-heading h3{font:500 25px/1.15 var(--font-display);margin:0}.calendar-month-heading .muted{font-size:12px}.calendar-weekday-row,.calendar-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px}.calendar-weekday-row{margin:0 0 7px}.calendar-weekday-row span{padding:0 5px;color:var(--muted);font-size:9px;text-transform:uppercase;letter-spacing:.08em;font-weight:800}.calendar-day{appearance:none;min-width:0;min-height:92px;padding:8px;border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--ink);font:inherit;text-align:left;cursor:pointer;display:flex;flex-direction:column;align-items:flex-start;gap:3px;transition:border-color .15s,transform .15s,background .15s}.calendar-day:hover{border-color:var(--accent);transform:translateY(-1px)}.calendar-day:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.calendar-day.outside{opacity:.35}.calendar-day.selected{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}.calendar-day.has-reading.l1{background:color-mix(in srgb,var(--accent) 8%,var(--paper))}.calendar-day.has-reading.l2{background:color-mix(in srgb,var(--accent) 14%,var(--paper))}.calendar-day.has-reading.l3{background:color-mix(in srgb,var(--accent) 22%,var(--paper))}.calendar-day.has-reading.l4{background:color-mix(in srgb,var(--accent) 32%,var(--paper))}.calendar-day-number{font-size:11px;font-weight:800;line-height:1}.calendar-day.today .calendar-day-number{display:grid;place-items:center;min-width:20px;height:20px;margin:-4px 0 1px -4px;border-radius:50%;background:var(--primary);color:var(--paper)}.calendar-day-time{margin-top:auto;font:500 16px/1.1 var(--font-display)}.calendar-day-books{color:var(--muted);font-size:9px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.calendar-day-empty{margin:auto;color:var(--line)}.calendar-loading{grid-column:1/-1;padding:50px 10px;text-align:center}.calendar-detail{position:sticky;top:24px;padding:20px}.calendar-detail h3{font:500 24px/1.2 var(--font-display);margin:7px 0 10px}.calendar-detail-summary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;margin:17px 0}.calendar-detail-summary div{min-width:0;padding:9px;border:1px solid var(--line);border-radius:11px;background:var(--paper)}.calendar-detail-summary span{display:block;color:var(--muted);font-size:8px;text-transform:uppercase;letter-spacing:.08em;font-weight:800}.calendar-detail-summary strong{display:block;margin-top:4px;font:500 16px/1.2 var(--font-display)}.calendar-book-list{display:grid;gap:6px}.calendar-book-row{appearance:none;width:100%;display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:10px;align-items:center;padding:7px;border:0;border-radius:10px;background:transparent;color:var(--ink);font:inherit;text-align:left;cursor:pointer}.calendar-book-row:hover{background:var(--paper-2)}.calendar-book-row:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.calendar-book-cover{width:34px;aspect-ratio:2/3;border-radius:4px;overflow:hidden;display:grid;place-items:center;background:var(--primary);color:var(--paper);font-family:var(--font-display)}.calendar-book-cover img{width:100%;height:100%;object-fit:cover}.calendar-book-copy{min-width:0}.calendar-book-copy strong,.calendar-book-copy small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.calendar-book-copy strong{font-size:12px}.calendar-book-copy small{margin-top:2px;color:var(--muted);font-size:10px}.calendar-book-time{font-size:11px;font-weight:800;color:var(--accent)}

@media(max-width:900px){.calendar-layout{grid-template-columns:1fr}.calendar-detail{position:static}.calendar-detail-summary{max-width:430px}}
@media(max-width:760px){.heatmap-weekdays{padding-top:18px}.calendar-header{align-items:flex-start;flex-direction:column}.calendar-header-actions{width:100%;justify-content:stretch}.calendar-date-search{width:100%}.calendar-date-search-controls{width:100%}.calendar-date-search input{flex:1;min-width:0;font-size:16px}.calendar-date-search .secondary-action{flex:0 0 auto}.calendar-controls{width:100%}.calendar-controls #calendarToday{flex:1}.calendar-panel{padding:14px}.calendar-weekday-row,.calendar-grid{gap:4px}.calendar-day{min-height:68px;padding:6px;border-radius:9px}.calendar-day-time{font-size:12px}.calendar-day-books{display:none}.calendar-month-heading{align-items:flex-start;flex-direction:column;gap:4px}.calendar-month-heading h3{font-size:22px}}
@media(max-width:420px){.calendar-weekday-row span{font-size:8px;padding:0 2px}.calendar-day{min-height:58px;padding:5px}.calendar-day-number{font-size:10px}.calendar-day-time{font-size:10px}.calendar-detail-summary{gap:5px}.calendar-detail-summary div{padding:7px}.calendar-detail-summary strong{font-size:14px}}
@media(max-width:520px){.heatmap-layout{grid-template-columns:0 minmax(0,1fr);gap:0}.heatmap-weekdays{display:none}}

/* Book cover controls */
.cover-actions{display:grid;gap:8px}.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
@media(max-width:520px){.book-page aside{align-items:start}.book-page aside .cover-actions{align-self:end}.book-page aside .cover-actions .secondary-action{margin-bottom:0}}

/* Cover manager */
.book-cover-manager{margin:28px 0 8px;padding-top:22px;border-top:1px solid var(--line)}
.cover-manager-actions{display:flex;gap:8px;margin:12px 0 4px}.cover-job{display:flex;align-items:center;gap:9px;margin:12px 0;padding:10px 12px;border:1px solid var(--line);border-radius:11px;background:var(--paper-2);font-size:12px}.cover-job.error{border-color:#b45c54}.job-spinner{width:13px;height:13px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:kovi-spin .8s linear infinite}@keyframes kovi-spin{to{transform:rotate(360deg)}}
.cover-choice-section{margin-top:20px}.cover-choice-section h4{margin:0 0 9px;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.cover-option-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}.cover-option{position:relative;display:grid;grid-template-rows:auto auto auto;gap:8px;min-width:0;padding:9px;border:1px solid var(--line);border-radius:12px;background:var(--paper)}.cover-option.selected{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}.option-cover{width:100%;max-width:128px;justify-self:center}.option-cover img{width:100%;height:100%;object-fit:cover}.cover-option-copy{min-width:0}.cover-option-copy strong,.cover-option-copy small{display:block}.cover-option-copy strong{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.cover-option-copy small{margin-top:3px;color:var(--muted);font-size:9px;line-height:1.35}.cover-option .secondary-action{width:100%;justify-content:center;padding:8px}.cover-option .status-badge{justify-self:start}

/* Status, diagnostics, backup and export */
.status-header{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:22px}.status-header h2{font:500 34px/1.08 var(--font-display);letter-spacing:-.025em;margin:5px 0}.status-metrics{margin-bottom:18px}.status-layout{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.status-panel{padding:20px;min-width:0}.status-list{display:grid;gap:3px}.status-row{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;padding:10px 0;border-top:1px solid var(--line)}.status-row:first-child{border-top:0}.status-row>div{min-width:0}.status-row strong,.status-row small{display:block}.status-row strong{font-size:12px}.status-row small{margin-top:2px;color:var(--muted);font-size:9px;line-height:1.4}.status-row>span{text-align:right;font-size:11px;font-weight:750;white-space:nowrap}.status-row>span small{font-weight:500}.export-panel{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:18px;padding:22px}.export-panel h3{font:500 25px/1.15 var(--font-display);margin:4px 0 8px}.export-panel p{max-width:650px;margin-bottom:0}.export-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap}.export-actions a{text-decoration:none;white-space:nowrap}
@media(max-width:900px){.status-layout{grid-template-columns:1fr}.export-panel{align-items:flex-start;flex-direction:column}.export-actions{justify-content:flex-start}}
@media(max-width:620px){.status-header{align-items:flex-start;flex-direction:column}.cover-option-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.status-row{display:grid;grid-template-columns:1fr}.status-row>span{text-align:left;white-space:normal}.export-actions{width:100%}.export-actions a{width:100%;justify-content:center;text-align:center}}

/* Library controls */
.library-summary{margin:7px 0 0;font-size:12px}.library-actions{flex-wrap:wrap;justify-content:flex-end}.library-controls{display:flex;align-items:end;gap:8px;flex-wrap:wrap;justify-content:flex-end}.library-select{display:grid;gap:4px}.library-select>span{padding-left:3px;color:var(--muted);font-size:9px;text-transform:uppercase;letter-spacing:.09em;font-weight:800}.library-select select{height:42px;min-width:132px;padding:0 30px 0 11px;border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--ink);font:inherit;font-size:12px;font-weight:700;color-scheme:light}.library-select:first-of-type select{min-width:148px}:root.dark .library-select select{color-scheme:dark}.library-controls .search{height:42px}
@media(max-width:900px){.library-toolbar{align-items:flex-start;flex-direction:column}.library-actions,.library-controls{width:100%;justify-content:flex-start}}
@media(max-width:620px){.library-controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.library-controls .search{grid-column:1/-1;width:100%}.library-controls .search input,.library-select select{width:100%;min-width:0}.library-actions #retryCovers{align-self:flex-start}}

/* The dashboard has one more range-aware metric than the system status grid. */
#metrics{grid-template-columns:repeat(5,minmax(0,1fr))}
@media(max-width:1100px){#metrics{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:760px){#metrics{grid-template-columns:repeat(2,minmax(0,1fr))}}