/* =========================================================
   Stackd: "Mixtape Notebook"
   Ballpoint ink on lined inlay paper. Hand-lettered caps for headings,
   buttons and tabs; a plain sans for anything you read at length.
   Lists are tracklists: 01, 02... on ruled lines with counts set right.
   One red stripe marks what is "now" (active tab, today).
   ========================================================= */

:root{
  --hand:"Patrick Hand SC","Marker Felt","Chalkboard SE",ui-rounded,sans-serif;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,sans-serif;
  /* type scale: 13 / 14 / 16 / 18 / 22 / 28 / 40 */
  --t-xs:13px;--t-sm:14px;--t-md:16px;--t-lg:18px;--t-xl:22px;--t-2xl:28px;--t-3xl:40px;
  --r:8px;--r-sm:6px;--r-lg:14px;
  --st:env(safe-area-inset-top,0px);--sb:env(safe-area-inset-bottom,0px);--nav-h:76px;
}
/* Night: the same inlay card under a desk lamp. Navy ink-soaked ground, paper-white ink. */
:root,[data-theme=dark]{
  --desk:#0a0f24;--bg:#0f1631;--surface:#18224a;--surface2:#212d5c;
  --rule:#26336a;--trk:#7f95d4;--line:#33427c;--line-strong:#6f86c8;
  --text:#eef1fa;--muted:#aab4d8;--pencil:#8d95ad;
  --accent:#2f4fb8;--accent-ink:#a9bdff;--on-accent:#ffffff;
  --red:#ff7a6b;--red-ink:#ff8f82;--red-fill:#d32f2f;--good:#a9bdff;--bad:#ff7a6b;--warn:#e8b65a;
  --tint:rgba(169,189,255,.10);--red-tint:rgba(255,122,107,.12);
  --nav-bg:rgba(15,22,49,.94);--lift:0 1px 0 rgba(255,255,255,.04) inset,0 10px 24px -8px rgba(0,0,0,.55),0 2px 6px rgba(0,0,0,.25);--shadow:0 2px 0 rgba(0,0,0,.35),0 12px 28px rgba(0,0,0,.35);
  --paper-rule:rgba(169,189,255,.13);--paper-margin:rgba(255,122,107,.45);--grain:.4;--grain-blend:overlay;
}
/* Day: ballpoint blue on white lined inlay stock. */
[data-theme=light]{
  --desk:#e7ebf4;--bg:#fbfcfe;--surface:#ffffff;--surface2:#eef2fa;
  --rule:#d6e0f3;--trk:#5670b0;--line:#c3cfe8;--line-strong:#6b86c5;
  --text:#1a2b63;--muted:#4b5c8c;--pencil:#6c7385;
  --accent:#1e3a8a;--accent-ink:#1e3a8a;--on-accent:#ffffff;
  --red:#d32f2f;--red-ink:#c62828;--red-fill:#d32f2f;--good:#1e3a8a;--bad:#c62828;--warn:#8f5b00;
  --tint:rgba(30,58,138,.07);--red-tint:rgba(211,47,47,.08);
  --nav-bg:rgba(251,252,254,.95);--lift:0 10px 24px -10px rgba(26,43,99,.22),0 2px 6px rgba(26,43,99,.08);--shadow:0 2px 0 #dfe6f4,0 12px 28px rgba(26,43,99,.10);
  --paper-rule:#dbe4f5;--paper-margin:rgba(211,47,47,.45);--grain:.13;--grain-blend:multiply;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%;margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:var(--t-md);-webkit-font-smoothing:antialiased}
body{overscroll-behavior:none;overflow:hidden}
/* paper: a fine grain over everything, so the app reads as real notebook stock, not flat screen colour */
body::after{content:"";position:fixed;inset:0;z-index:90;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .5 0 0 0 0 .5 0 0 0 0 .5 0 0 0 .9 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");background-size:180px;opacity:var(--grain);mix-blend-mode:var(--grain-blend)}
/* night: the page under a desk lamp, a touch lighter at the top */
[data-theme=dark] body{background:linear-gradient(180deg,var(--bg-top,#141d40) 0%,var(--bg) 45%,var(--bg-bot,#0b1128) 100%) fixed}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;padding:0}
button:disabled{opacity:.45;cursor:default}
input,textarea,select{font:inherit;color:var(--text)}
::placeholder{color:var(--pencil);opacity:1}
svg{width:22px;height:22px;flex:none}
b,strong{font-weight:650}

/* ---------- screens + tab bar ---------- */
.screen{position:fixed;inset:0;bottom:calc(var(--nav-h) + var(--sb));overflow-y:auto;-webkit-overflow-scrolling:touch;display:none}
.screen.active{display:block}
.wrap{max-width:600px;margin:0 auto;padding:calc(14px + var(--st)) 18px 32px}
body.focus .tabbar{display:none}
body.focus .screen{bottom:0}
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:20;height:calc(var(--nav-h) + var(--sb));padding-bottom:var(--sb);padding-inline:max(0px,calc((100% - 600px)/2));display:flex;align-items:center;background:var(--nav-bg);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1.5px solid var(--line)}
.tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;font-family:var(--hand);font-size:16px;letter-spacing:.02em;color:var(--muted);height:100%;justify-content:center;position:relative}
.tab svg{width:24px;height:24px}
.tab.active{color:var(--red-ink)}
.tab.active:not(.cam)::after{content:"";position:absolute;top:-1.5px;left:50%;width:15px;margin-left:-7px;height:6px;background:repeating-linear-gradient(90deg,var(--red) 0 3px,transparent 3px 6px)}
.tab.cam .ring{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:var(--accent);color:var(--on-accent);margin-top:-22px;border:4px solid var(--bg);box-shadow:0 2px 0 var(--line);transition:background .2s,transform .2s cubic-bezier(.2,.8,.2,1)}
.tab.cam.active .ring{background:var(--red-fill);border-color:var(--bg)}
.tab.cam:active .ring{transform:scale(.94)}
.tab.cam svg{width:26px;height:26px}
/* the tab bar floats: a rounded paper strip lifted off the bottom edge */
.tabbar{left:max(12px,calc(50% - 300px));right:max(12px,calc(50% - 300px));bottom:calc(10px + var(--sb));height:62px;padding:0 4px;border:1px solid color-mix(in srgb,var(--line) 70%,transparent);border-radius:20px;box-shadow:var(--lift)}
.tab.active:not(.cam)::after{top:-1px}
.tab.cam .ring{margin-top:-26px}
body.on-camera:not(.cam-paper) .tabbar{background:rgba(0,0,0,.4);border-top-color:transparent}
body.on-camera:not(.cam-paper) .tab{color:rgba(255,255,255,.82)}
body.on-camera:not(.cam-paper) .tab.cam .ring{border-color:transparent}

/* wide screens: the app is a page lying on a desk */
@media (min-width:760px){
  html,body{background:var(--desk)}
  .screen:not(#camera){background:var(--desk)}
  .screen:not(#camera)>.wrap{background:var(--bg);min-height:100%;border-inline:1.5px solid var(--line);padding-inline:28px}
}

/* wide screens: the Study home opens up into two columns, today on the left, classes on the right */
@media (min-width:1100px){
  #study .wrap:has(>.today-box){max-width:1080px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);column-gap:48px;align-items:start;align-content:start;padding-inline:40px}
  #study .wrap:has(>.today-box)>*{grid-column:1}
  #study .wrap:has(>.today-box)>.top,#study .wrap:has(>.today-box)>.page-date{grid-column:1/-1}
  #study .wrap:has(>.today-box)>.search,#study .wrap:has(>.today-box)>.search-results{grid-column:1/-1;grid-row:3}
  #study .wrap:has(>.today-box)>.search-results:empty{display:none}
  #study .wrap:has(>.today-box)>.label{grid-column:2;grid-row:4;margin-top:0}
  #study .wrap:has(>.today-box)>.stack,#study .wrap:has(>.today-box)>.empty{grid-column:2;grid-row:4/span 6;margin-top:56px}
  #study .wrap:has(>.today-box)>.gap{display:none}
  #study .wrap:has(>.today-box)>[data-act="new-subj"]{grid-column:2;grid-row:10}
  #study .wrap:has(>.today-box)>.banner{grid-column:1/-1}
}
/* ---------- headings, text ---------- */
.top{display:flex;align-items:center;gap:10px;min-height:48px;margin-bottom:12px}
.top h1{font-family:var(--hand);font-weight:400;font-size:var(--t-3xl);line-height:1;margin:0;letter-spacing:.01em;flex:1;color:var(--accent-ink)}
.top:has(h1){border-bottom:2px solid var(--accent-ink);padding-bottom:8px;box-shadow:0 3px 0 -1px var(--bg),0 4px 0 -1px var(--line)}
.top h2{font-family:var(--hand);font-weight:400;font-size:var(--t-2xl);margin:0;line-height:1.05;letter-spacing:.01em;color:var(--accent-ink);overflow:hidden;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow-wrap:anywhere}
.top .tt{flex:1;min-width:0}
.icon-btn{width:44px;height:44px;flex:none;border-radius:var(--r);display:grid;place-items:center;background:transparent;border:1.5px solid var(--line);color:var(--accent-ink)}
.icon-btn.sm{width:44px;height:44px;border:0;color:var(--muted)}
.sub{color:var(--muted);margin:0 0 18px;font-size:16px;line-height:1.45}
.sub b{color:var(--text)}
/* the date written at the top of the page, like the first thing on a page of notes */
.page-date{font-family:var(--hand);font-size:21px;color:var(--muted);text-align:right;margin:-4px 0 14px;transform:rotate(-1.5deg);transform-origin:right}
.center{text-align:center}
/* section heads: a hand-lettered heading on a ruled underline, like "SIDE A" */
.label .count{font-size:18px}
.label{display:flex;align-items:baseline;justify-content:space-between;gap:10px;font-family:var(--hand);font-size:var(--t-xl);line-height:1.1;color:var(--accent-ink);margin:40px 0 10px;padding-bottom:4px;border-bottom:1px solid color-mix(in srgb,var(--accent-ink) 45%,transparent)}
.meta{color:var(--muted);font-size:var(--t-sm);margin-top:2px;line-height:1.4;font-variant-numeric:tabular-nums}
.fine{color:var(--muted);font-size:var(--t-xs);text-align:center;line-height:1.45;margin:14px 0 0}
.ptxt{color:var(--muted);font-size:var(--t-sm);text-align:center;font-variant-numeric:tabular-nums}
.pre{white-space:pre-wrap;word-wrap:break-word}
.row{display:flex;gap:10px}.row>*{flex:1}
.stack{display:flex;flex-direction:column;gap:10px}
.gap{height:16px}

/* ---------- buttons ---------- */
.btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;min-height:52px;padding:0 16px;border-radius:var(--r);font-family:var(--hand);font-size:21px;letter-spacing:.02em;line-height:1;color:var(--accent-ink);background:transparent;border:1.5px solid var(--line-strong);transition:background .15s,transform .1s}
.btn:active:not(:disabled){transform:translateY(1px)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.btn.good{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.btn.bad{color:var(--red-ink);border-color:var(--red)}
.btn.ghost{border-color:var(--line);color:var(--muted)}
.btn.danger{color:var(--red-ink);border-color:var(--red)}
.btn svg{width:20px;height:20px}
.btn.sm{min-height:44px;font-size:19px}
/* softer controls: secondary buttons and header icons are filled paper tabs, not outlines.
   Only the primary action stays solid ink, and red-outlined buttons keep their outline as a warning. */
.btn:not(.primary):not(.good):not(.bad):not(.danger):not(.ghost):not(.glass-btn){background:var(--surface2);border-color:transparent}
.btn.ghost{border-color:transparent;background:transparent;text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:6px}
.btn.bad{background:var(--red-tint)}
.icon-btn{background:var(--surface2);border-color:transparent}
.icon-btn.sm{background:transparent}
.mini{background:var(--surface2);border-color:transparent}
@media (hover:hover){.btn:not(.primary):not(.good):not(.bad):not(.danger):not(.glass-btn):hover,.icon-btn:not(.sm):hover{background:color-mix(in srgb,var(--surface2) 70%,var(--accent-ink))}}
.linkbtn{display:block;min-height:44px;margin:6px auto 0;color:var(--muted);font-family:var(--hand);font-size:19px;padding:6px 14px;text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:5px}
.mini{min-height:36px;padding:6px 12px;border-radius:var(--r-sm);border:1.5px solid var(--line);font-family:var(--hand);font-size:17px;color:var(--accent-ink);flex:none}
.add-row{display:flex;align-items:center;gap:8px;width:100%;min-height:48px;padding:0 4px;color:var(--accent-ink);font-family:var(--hand);font-size:19px;border-top:1.5px dashed var(--line)}
.bar{height:5px;background:var(--rule);border-radius:3px;margin-top:8px;overflow:hidden}
.bar>i{display:block;height:100%;background:var(--accent-ink);border-radius:3px;transition:width .3s}

/* ---------- containers ---------- */
.card{background:var(--surface);border:1.5px solid var(--line);border-radius:var(--r);padding:16px}
.empty{text-align:center;color:var(--muted);padding:30px 18px;border:1.5px dashed var(--line-strong);border-radius:var(--r);line-height:1.55;background:var(--surface)}
.empty b{color:var(--text)}
.banner{background:var(--surface2);border:1.5px solid var(--line);border-radius:var(--r);padding:12px 14px;margin-bottom:14px;font-size:var(--t-sm);line-height:1.45;display:flex;gap:10px;align-items:center}
.banner>div{flex:1}.banner .x{color:var(--muted);font-size:22px;padding:0 6px;min-height:44px;min-width:32px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:var(--r-sm);border:1.5px solid var(--line);font-family:var(--hand);font-size:16px;color:var(--muted)}
.pro{display:inline-flex;align-items:center;gap:6px;font-family:var(--hand);font-size:17px;letter-spacing:.04em;line-height:1;padding:6px 10px 5px;border-radius:var(--r-sm);border:1.5px solid var(--red);color:var(--red-ink);background:transparent;white-space:nowrap}
.pro::after{content:"";width:12px;height:12px;background:repeating-linear-gradient(115deg,var(--red) 0 2px,transparent 2px 4px)}
.pro.sm{font-size:14px;padding:3px 6px 2px}.pro.sm::after{display:none}
.pro.demo{border-color:var(--line-strong);color:var(--accent-ink)}.pro.demo::after{display:none}
.spinner{width:34px;height:34px;border-radius:50%;border:3.5px solid var(--rule);border-top-color:var(--accent-ink);animation:spin .8s linear infinite;display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}

.ic{display:inline-flex;vertical-align:-.16em}.ic svg{width:1.05em;height:1.05em}
.done-mark{display:flex;justify-content:center;color:var(--accent-ink)}.done-mark svg{width:72px;height:72px;stroke-width:1.6}
.banner .x{display:grid;place-items:center}.banner .x svg,.rv-x svg{width:18px;height:18px}.rv-x{display:grid;place-items:center}

/* ---------- the tracklist: the one signature row ---------- */
.trk{flex:none;width:30px;font-family:var(--hand);font-size:19px;line-height:1.2;color:var(--trk);font-variant-numeric:tabular-nums}
.tracklist{display:flex;flex-direction:column}
.tracklist>*{border-bottom:1px solid var(--rule)}
.tracklist>*:last-child{border-bottom:0}
.count{flex:none;font-family:var(--hand);font-size:19px;color:var(--muted);font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}

/* ---------- camera ---------- */
#camera{bottom:0;background:#000;overflow:hidden;color:#fff}
#camVideo,#camShot{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
#camShot{object-fit:contain;background:#000}
#camFlash{position:absolute;inset:0;background:#fff;opacity:0;pointer-events:none;z-index:5}
#camFlash.go{animation:flash .35s ease-out}
@keyframes flash{0%{opacity:.85}100%{opacity:0}}
#camUI{position:absolute;inset:0;z-index:3}
.cam-top{position:absolute;z-index:2;top:calc(12px + var(--st));left:14px;right:14px;display:flex;justify-content:space-between;align-items:center}
.glass{width:44px;height:44px;border-radius:var(--r);background:rgba(0,0,0,.45);color:#fff;display:grid;place-items:center;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.glass.lg{width:52px;height:52px}
.glass.spacer{visibility:hidden}
.cam-hint{position:absolute;top:calc(74px + var(--st));left:0;right:0;text-align:center;font-family:var(--hand);font-size:21px;text-shadow:0 1px 8px rgba(0,0,0,.7)}
.cam-frame{position:absolute;left:8%;right:8%;top:calc(110px + var(--st));bottom:calc(var(--nav-h) + var(--sb) + 130px);border:2px dashed rgba(255,255,255,.55);border-radius:var(--r);pointer-events:none}
.cam-bottom{position:absolute;left:0;right:0;bottom:calc(var(--nav-h) + var(--sb) + 22px);display:flex;align-items:center;justify-content:center;gap:42px}
.shutter{width:80px;height:80px;border-radius:50%;border:5px solid #fff;background:rgba(255,255,255,.18);transition:transform .1s}
.shutter:active{transform:scale(.9)}
.glass-btn{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.5);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.preview-actions{position:absolute;left:16px;right:16px;bottom:calc(18px + var(--sb));display:flex;gap:10px;align-items:center}
.preview-actions .btn,.preview-actions .btn.primary{flex:1;min-width:0;padding:0 10px;font-size:20px;position:relative;white-space:nowrap}
.preview-actions .btn .pro.sm{position:absolute;top:-10px;right:-4px;background:var(--red-fill);color:#fff;border-color:var(--red-fill)}
.cam-right{display:flex;gap:8px;align-items:center}
.glass-chip{height:38px;padding:0 12px;border-radius:var(--r);background:rgba(0,0,0,.45);color:#fff;display:inline-flex;align-items:center;gap:5px;font-family:var(--hand);font-size:19px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.glass-chip svg{width:18px;height:18px;color:#ffb199}
#camera .pro{background:var(--red-fill);color:#fff;border-color:var(--red-fill);min-height:38px;padding:0 12px}
#camera .pro::after{background:repeating-linear-gradient(115deg,#fff 0 2px,transparent 2px 4px)}
#camera .pro.demo{background:rgba(0,0,0,.45);border-color:rgba(255,255,255,.5)}
/* no live camera: the viewfinder becomes a blank inlay card */
.cam-msg{position:absolute;inset:0;bottom:calc(var(--nav-h) + var(--sb));display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px 28px;gap:12px;background:var(--bg);color:var(--text)}
.cam-msg>svg{width:44px;height:44px;color:var(--accent-ink)}
/* first screen: a small fanned stack of ruled index cards (the "stack" in Stackd) */
.cam-art{position:relative;width:150px;height:104px;margin-bottom:10px}
.cam-art i{position:absolute;inset:0;border:1.5px solid var(--line-strong);border-radius:var(--r-sm);display:grid;place-items:center;color:var(--accent-ink);box-shadow:var(--shadow);
  background:linear-gradient(90deg,transparent 22px,var(--paper-margin) 22px,var(--paper-margin) 23.5px,transparent 23.5px),repeating-linear-gradient(180deg,transparent 0 17px,var(--paper-rule) 17px 18px) 0 14px/100% calc(100% - 14px) no-repeat,var(--surface);
  animation:fan .6s cubic-bezier(.2,.8,.2,1) both}
.cam-art i:nth-child(1){--to:rotate(-9deg) translate(-14px,6px);background-color:var(--surface2)}
.cam-art i:nth-child(2){--to:rotate(5deg) translate(12px,2px);animation-delay:.06s}
.cam-art i:nth-child(3){--to:rotate(-1deg);animation-delay:.12s}
.cam-art i:not(:nth-child(3)){transform:var(--to)}
.cam-art svg{width:40px;height:40px}
@keyframes fan{from{transform:rotate(0) translate(0,8px);opacity:0}to{transform:var(--to);opacity:1}}
.cam-msg b{font-family:var(--hand);font-weight:400;font-size:34px;line-height:1.05;color:var(--accent-ink)}
.cam-msg span{color:var(--muted);line-height:1.45;max-width:320px}
.cam-msg .btn{max-width:320px}
.cam-msg .glass-btn{background:transparent;color:var(--accent-ink);border-color:var(--line-strong);backdrop-filter:none;-webkit-backdrop-filter:none}
body.cam-paper .glass,body.cam-paper .glass-chip{background:var(--surface);color:var(--accent-ink);border:1.5px solid var(--line)}
body.cam-paper #camera .pro.demo{background:transparent;color:var(--accent-ink);border-color:var(--line-strong)}

/* ---------- study: today strip ---------- */
.today-box{background:var(--surface);border:1.5px solid var(--line-strong);border-radius:var(--r);margin-bottom:12px;position:relative;overflow:hidden}
.today-box::before{content:"";position:absolute;top:0;right:16px;width:19px;height:20px;background:repeating-linear-gradient(90deg,var(--red) 0 4px,transparent 4px 7px)}
.today-box>*{padding:12px 16px;border-bottom:1px solid var(--rule)}
.today-box>*:last-child{border-bottom:0}
.streak{display:flex;gap:14px;align-items:center;width:100%;text-align:left}
.streak .txt{flex:1;min-width:0}
.streak b{font-family:var(--hand);font-weight:400;font-size:var(--t-xl);line-height:1.1;color:var(--accent-ink)}
.flame{display:grid;place-items:center;width:34px;height:34px;color:var(--pencil)}
.flame svg{width:30px;height:30px}
.flame.on{color:var(--red)}
.week{display:flex;gap:10px;margin-top:8px}
.wk{display:flex;flex-direction:column;align-items:center;gap:2px}
.wk i{width:14px;height:14px;border-radius:50%;border:1.5px solid var(--line-strong)}
.wk.on i{background:var(--accent-ink);border-color:var(--accent-ink)}
.wk.future i{border-style:dashed;opacity:.6}
.wk.today i{box-shadow:0 0 0 2px var(--surface),0 0 0 3.5px var(--red)}
.wk small{font-family:var(--hand);font-size:13px;color:var(--muted);line-height:1}
.today-box>.cd-row{display:block;position:relative;width:100%;text-align:left;padding:12px 16px}
.cd-row .count{position:absolute;top:12px;right:16px}
.cd-row .cd-title{padding-right:96px}
.cd-row .txt{flex:1;min-width:0}
.cd-row .meta{display:block}
.cd-title{display:block;font-size:16px}
.cd-go{display:inline-flex;align-items:center;gap:2px;margin-top:4px;font-family:var(--hand);font-size:19px;color:var(--accent-ink)}
.cd-go svg{width:16px;height:16px}
.cd-row .count.s-bad{color:var(--red-ink)}
.count.s-bad{color:var(--red-ink)}
.due-card{display:flex;align-items:center;gap:12px}
.due-card .btn{white-space:nowrap;flex:none}
/* study home: the next card, on top of the stack, is the big button */
.up-next{position:relative;display:block;width:100%;text-align:left;margin:4px 0 26px;padding:0}
.un-card{position:relative;z-index:2;display:flex;flex-direction:column;justify-content:space-between;gap:14px;min-height:150px;padding:16px 16px 12px 52px;border:1.5px solid var(--line-strong);border-radius:var(--r);box-shadow:var(--shadow);transition:transform .2s cubic-bezier(.2,.8,.2,1);
  background:linear-gradient(90deg,transparent 36px,var(--paper-margin) 36px,var(--paper-margin) 37.5px,transparent 37.5px),repeating-linear-gradient(180deg,transparent 0 31px,var(--paper-rule) 31px 32px) 0 12px/100% calc(100% - 12px) no-repeat,var(--surface)}
.un-card::before{content:"";position:absolute;left:0;right:0;top:42.5px;height:2px;background:var(--pen)}
.un-q{position:relative;font-size:19px;font-weight:600;line-height:32px;margin-top:-5px;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}
.un-foot{display:flex;justify-content:space-between;align-items:center;gap:10px;font-family:var(--hand);font-size:17px;color:var(--muted)}
.un-go{display:inline-flex;align-items:center;gap:4px;padding:6px 12px 5px;border-radius:var(--r-sm);background:var(--accent);color:var(--on-accent);font-size:19px;white-space:nowrap}
.un-go svg{width:16px;height:16px}
.un-back{position:absolute;inset:0;border:1.5px solid var(--line-strong);border-radius:var(--r);background:var(--surface2);z-index:1}
.un-back.b1{transform:translateY(8px) scale(.96);opacity:.85}
.un-back.b2{transform:translateY(16px) scale(.92);opacity:.55}
/* "Short on time?": pick minutes, not cards */
.timebox{display:flex;align-items:center;gap:12px;margin:-8px 0 16px;flex-wrap:wrap}
.tb-label{font-family:var(--hand);font-size:19px;color:var(--muted)}
.tb-chips{display:flex;gap:8px}
.tb-chip{display:flex;flex-direction:column;align-items:center;min-width:64px;min-height:48px;padding:6px 12px;border-radius:var(--r);background:var(--surface2);border:1.5px solid color-mix(in srgb,var(--line) 70%,transparent)}
.tb-chip b{font-family:var(--hand);font-weight:400;font-size:19px;line-height:1.1;color:var(--text)}
.tb-chip small{font-size:11px;color:var(--muted)}
.tb-chip:active{transform:translateY(1px)}
@media (hover:hover){.tb-chip:hover{border-color:var(--accent-ink)}}
.up-next:active .un-card{transform:translateY(3px)}
@media (hover:hover){.up-next:hover .un-card{transform:translateY(-2px) rotate(-.4deg)}}
.due-card b{font-size:16px}
.quick{display:flex;gap:12px;margin:16px 0 4px}
.quick .btn{font-size:19px}

/* ---------- study: classes as tracklists ---------- */
.subject{border-bottom:0}
.subj-head{display:flex;align-items:center;gap:4px;border-bottom:3px solid var(--pen,var(--accent-ink))}
/* each class writes in its own pen: header rule, dot, index numbers and known-bars take the class colour */
.subject .sdot{width:14px;height:14px;box-shadow:0 0 0 3px color-mix(in srgb,var(--pen) 25%,transparent)}
.subject .set .trk{color:color-mix(in srgb,var(--pen) 60%,var(--text))}
.subject .add-row{color:color-mix(in srgb,var(--pen) 55%,var(--text));border-top-color:color-mix(in srgb,var(--pen) 45%,transparent)}
.subject .set:hover{background:color-mix(in srgb,var(--pen) 7%,transparent)}
.pen-top{padding-bottom:10px;border-bottom:3px solid var(--pen)}
.subj-toggle{flex:1;display:flex;align-items:center;gap:10px;padding:10px 0 6px;text-align:left;min-width:0;min-height:48px}
.sdot{width:12px;height:12px;border-radius:50%;flex:none}
.sname{font-family:var(--hand);font-size:var(--t-xl);line-height:1.1;color:var(--accent-ink);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.scount{color:var(--muted);font-family:var(--hand);font-size:17px}
.chev{color:var(--muted);transition:transform .2s;display:grid}
.subject.open .chev{transform:rotate(180deg)}
.subj-body{display:none;flex-direction:column}
.subject.open .subj-body{display:flex}
.subject+.subject{margin-top:28px}
/* empty Study: one-tap class starters instead of a blank box */
/* card search */
.search{position:relative;margin:18px 0 0}
.search-ic{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted);display:grid}
.search input{width:100%;min-height:48px;padding:0 14px 0 44px;border-radius:var(--r);border:1.5px solid color-mix(in srgb,var(--line) 70%,transparent);background:var(--surface2);font-size:16px;-webkit-appearance:none;appearance:none}
.search input:focus{outline:none;border-color:var(--accent-ink)}
.search-results:empty{display:none}
.search-results{margin-top:10px}
.search-hit{width:100%;text-align:left}
.search-hit .f,.search-hit .b{display:block}
.search-hit .b{color:var(--muted);font-size:14px;margin-top:3px}
.search-none{color:var(--muted);text-align:center;padding:24px 0}
.wrap.searching>.label,.wrap.searching>.stack,.wrap.searching>.gap,.wrap.searching>[data-act="new-subj"],.wrap.searching>.today-box,.wrap.searching>.up-next,.wrap.searching>.quick{display:none}
.subj-empty{padding:16px 0 6px}
.subj-empty b{font-family:var(--hand);font-weight:400;font-size:var(--t-lg);color:color-mix(in srgb,var(--pen,var(--accent-ink)) 55%,var(--text))}
.subj-empty p{margin:4px 0 14px;color:var(--muted);font-size:14px;line-height:1.45}
.starter{padding:20px 4px 6px}
.starter b{font-family:var(--hand);font-weight:400;font-size:var(--t-xl);color:var(--accent-ink)}
.starter p{margin:4px 0 14px;color:var(--muted);font-size:14px}
.starter-chips{display:flex;flex-wrap:wrap;gap:10px}
.starter-chip{display:inline-flex;align-items:center;gap:8px;min-height:48px;padding:0 16px;border-radius:var(--r);background:color-mix(in srgb,var(--pen-raw) 18%,var(--surface2));font-family:var(--hand);font-size:20px;color:var(--text)}
.starter-chip .sdot{background:var(--pen-raw);width:10px;height:10px}
.starter-chip:active{transform:translateY(1px)}
.starter-chip small{font-family:var(--sans);font-size:12px;color:var(--muted)}
.quick-test{display:flex;gap:6px;align-items:center;width:100%;text-align:left;padding:14px 0;min-height:60px}
.quick-test .txt{flex:1;min-width:0}
.quick-test .name{font-weight:600;font-size:16px}
.quick-test .count{color:var(--accent-ink);display:inline-flex;align-items:center;gap:2px}
.quick-test .count .ic svg{width:16px;height:16px}
.set{display:flex;align-items:flex-start;gap:6px;width:100%;text-align:left;padding:12px 0;border-bottom:1px solid var(--rule)}
.set .txt{flex:1;min-width:0}
.set-name{font-weight:600;font-size:16px}
.set .bar{background:var(--rule);max-width:220px}

/* ---------- set view ---------- */
.card-item{display:flex;gap:6px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--rule)}
.card-item:last-child{border-bottom:0}
.card-item .txt{flex:1;min-width:0}
.card-item .f{font-weight:600}
.card-item .b{color:var(--muted);font-size:var(--t-sm);margin-top:3px}
.card-item:not(.known) .trk{color:var(--pencil)}
.kmark{flex:none;width:20px;color:var(--accent-ink);margin-top:2px}.kmark svg{width:18px;height:18px}
.card-item .icon-btn.sm{margin:-10px -10px -10px 0}
.row.three .btn{padding:0 8px;font-size:20px}
/* set screen: each study mode says what it does in one line */
.modes .btn{flex-direction:column;gap:3px;min-height:66px}
.modes .btn small{font-family:var(--sans);font-size:12px;letter-spacing:0;opacity:.85;line-height:1.2}

/* ---------- flashcard: a ruled inlay card with a red margin ---------- */
.flip{perspective:1400px;height:min(54vh,430px);margin:16px 0;cursor:pointer;border-radius:var(--r)}
.flip-inner{position:relative;width:100%;height:100%;transition:transform .45s cubic-bezier(.2,.8,.2,1);transform-style:preserve-3d}
.flip.on .flip-inner{transform:rotateY(180deg)}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border:1.5px solid var(--line-strong);border-radius:var(--r);display:flex;align-items:flex-start;justify-content:flex-start;padding:15px 22px 46px 58px;text-align:left;font-size:var(--t-xl);font-weight:600;line-height:32px;overflow:auto;box-shadow:var(--shadow);
  background:linear-gradient(90deg,transparent 40px,var(--paper-margin) 40px,var(--paper-margin) 41.5px,transparent 41.5px),repeating-linear-gradient(180deg,transparent 0 31px,var(--paper-rule) 31px 32px) 0 12px/100% calc(100% - 12px) no-repeat,var(--surface)}
.face .pre{width:100%}
/* the card's header line is in its class colour, like a real ruled index card */
.flip .face::before{content:"";position:absolute;top:42.5px;left:0;right:0;height:2px;background:var(--pen,var(--line-strong))}
.face .pre{position:relative;z-index:1}
.face.back{transform:rotateY(180deg);font-size:19px;font-weight:450;color:var(--text);background:linear-gradient(90deg,transparent 40px,var(--paper-margin) 40px,var(--paper-margin) 41.5px,transparent 41.5px),repeating-linear-gradient(180deg,transparent 0 31px,var(--paper-rule) 31px 32px) 0 12px/100% calc(100% - 12px) no-repeat,var(--surface2)}
.face .hint{position:absolute;bottom:14px;left:58px;right:0;font-family:var(--hand);font-size:17px;color:var(--muted);font-weight:400}
.face.back .hint{color:var(--red-ink)}
.big{font-family:var(--hand);font-size:84px;line-height:1;text-align:center;margin:22px 0 6px;color:var(--accent-ink);font-variant-numeric:tabular-nums}
/* session done: a graded score card on the same ruled inlay as the flashcard */
.scorecard{position:relative;margin:8px 0 4px;padding:18px 18px 8px 58px;border:1.5px solid var(--line-strong);border-radius:var(--r);box-shadow:var(--shadow);
  background:linear-gradient(90deg,transparent 40px,var(--paper-margin) 40px,var(--paper-margin) 41.5px,transparent 41.5px),var(--surface)}
.score-ring{position:relative;width:200px;height:112px;display:grid;place-items:center;margin:0 auto}
.pen-circle{position:absolute;inset:0;width:100%;height:100%;fill:none;stroke:var(--accent-ink);stroke-width:3;stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1;animation:pen-draw .7s cubic-bezier(.3,.7,.2,1) .15s forwards}
@keyframes pen-draw{to{stroke-dashoffset:0}}
.score-num{position:relative;font-family:var(--hand);font-size:76px;line-height:1;color:var(--accent-ink);font-variant-numeric:tabular-nums}
.score-num small{font-size:36px;color:var(--muted)}
.score-num small.word{font-size:22px;margin-left:4px}
.score-cap{text-align:center;margin:2px 0 10px;font-family:var(--hand);font-size:20px;color:var(--muted)}
.sc-rows>.sc-row{display:flex;align-items:center;gap:10px;padding:12px 0;border-top:1px solid var(--rule)}
.sc-row .txt{flex:1;min-width:0}
.sc-row b{display:block;font-weight:600}
.sc-row .meta{display:block}
.sc-row .flame{width:30px;height:30px;margin-left:-4px}
.sc-row .flame svg{width:26px;height:26px}
.sc-row .bar{display:block;max-width:240px}
.goal-fill{transition:width .9s cubic-bezier(.2,.8,.2,1) .5s!important}
body.focus #study .wrap{min-height:100%;display:flex;flex-direction:column}
/* flashcard deck: the cards still to come sit stacked behind the current one */
.deck{position:relative;margin:16px 0 22px}
body.focus #study{overflow-x:hidden}
.deck .flip{margin:0;position:relative;z-index:2;touch-action:pan-y;user-select:none;-webkit-user-select:none;transition:transform .25s cubic-bezier(.2,.8,.2,1)}
.deck .flip.dragging{transition:none;cursor:grabbing}
.deck .flip.fly{transition:transform .22s cubic-bezier(.4,0,.8,.6)}
.deck .flip.enter{animation:deal .3s cubic-bezier(.2,.8,.2,1)}
@keyframes deal{from{transform:translateY(12px) scale(.96)}}
.deck-back{position:absolute;inset:0;border:1.5px solid var(--line-strong);border-radius:var(--r);z-index:1;
  background:repeating-linear-gradient(180deg,transparent 0 31px,var(--paper-rule) 31px 32px) 0 12px/100% calc(100% - 12px) no-repeat,var(--surface2)}
.deck-back.b1{transform:translateY(9px) scale(.965);opacity:.85}
.deck-back.b2{transform:translateY(18px) scale(.93);opacity:.6}
/* grading stamps fade in as you drag */
.stamp{position:absolute;top:46%;z-index:3;padding:4px 12px 2px;border:2.5px solid currentColor;border-radius:var(--r-sm);font-family:var(--hand);font-size:30px;line-height:1.1;pointer-events:none;opacity:0;background:var(--surface)}
.st-got{left:62px;color:var(--accent-ink);transform:rotate(-10deg);opacity:clamp(0,var(--sw,0) * 1.6,1)}
.st-miss{right:18px;color:var(--red-ink);transform:rotate(9deg);opacity:clamp(0,var(--sw,0) * -1.6,1)}
body.focus #study .deck .flip{height:calc(100vh - 280px - var(--st) - var(--sb));height:calc(100dvh - 280px - var(--st) - var(--sb));min-height:300px;max-height:560px}
.row.grade{margin-top:auto;padding-bottom:calc(8px + var(--sb))}
/* keyboard shortcuts, shown only where there is a keyboard */
.kbd-hint{display:none;justify-content:center;gap:22px;margin:12px 0 0;color:var(--muted);font-size:14px}
.kbd-hint kbd{display:inline-block;min-width:26px;padding:2px 8px;margin-right:6px;border:1.5px solid var(--line-strong);border-bottom-width:3px;border-radius:6px;font:inherit;font-family:var(--hand);font-size:16px;color:var(--text);text-align:center}
@media (hover:hover) and (pointer:fine){.kbd-hint{display:flex}}
body.focus #study .row.grade{margin-top:auto;padding-bottom:0}
.ticks{display:flex;gap:4px;margin-top:10px}
.ticks i{flex:1;height:8px;max-width:28px;border-radius:2px;background:var(--rule);transition:background .25s}
.ticks i.got{background:var(--accent-ink)}
.ticks i.miss{background:var(--red)}
.ticks i.half{background:linear-gradient(90deg,var(--accent-ink) 50%,var(--rule) 50%)}
.ticks i.now{background:transparent;box-shadow:inset 0 0 0 1.5px var(--accent-ink)}
.ticks i.half.now{background:linear-gradient(90deg,var(--accent-ink) 50%,transparent 50%)}
.ticks{justify-content:center}

/* ---------- tests ---------- */
.test-item{display:flex;gap:6px;align-items:center;width:100%;text-align:left;padding:13px 0}
.test-item.card{background:none;border:0;border-radius:0;border-bottom:1px solid var(--rule)}
.test-item .txt{flex:1;min-width:0}
.test-item .name{font-weight:600;font-size:16px}
.score{min-width:58px;text-align:right;font-family:var(--hand);font-size:var(--t-xl);color:var(--muted);font-variant-numeric:tabular-nums}
/* a taken test's score is circled in pen, like a graded paper */
.score.ringed{position:relative;text-align:center;min-width:66px;padding:6px 6px 4px}
.score.ringed::before{content:"";position:absolute;inset:0 -2px;border:1.6px solid currentColor;border-radius:50%;transform:rotate(-5deg);opacity:.85}
.s-good{color:var(--good)}.s-mid{color:var(--warn)}.s-bad{color:var(--bad)}
.stat-row{display:flex;border:1.5px solid var(--line-strong);border-radius:var(--r);background:var(--surface)}
.stat{flex:1;padding:12px 8px;text-align:center}
.stat+.stat{border-left:1px solid var(--rule)}
.stat b{display:block;font-family:var(--hand);font-weight:400;font-size:var(--t-2xl);line-height:1.1;color:var(--accent-ink);font-variant-numeric:tabular-nums}
.stat span{font-size:var(--t-xs);color:var(--muted)}
.q{background:var(--surface);border:1.5px solid var(--line-strong);border-radius:var(--r);padding:18px 18px 20px;font-size:var(--t-xl);font-weight:600;line-height:1.35;margin:14px 0;box-shadow:var(--shadow)}
.opt{width:100%;text-align:left;padding:14px 16px;border-radius:var(--r);background:var(--surface);border:1.5px solid var(--line);font-size:var(--t-md);line-height:1.4}
.opt:disabled{opacity:1}
/* answer choices read like a test sheet: a lettered bubble you fill in */
.opt{display:flex;align-items:flex-start;gap:12px}
.opt .pre{flex:1;min-width:0;padding-top:3px}
.bub{flex:none;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;border:1.5px solid var(--line-strong);font-family:var(--hand);font-size:18px;line-height:1;color:var(--accent-ink);transition:background .15s,color .15s}
@media (hover:hover){.opt:not(:disabled):hover .bub{background:var(--tint)}}
.opt:not(:disabled):active .bub{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
.opt.right .bub{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.opt.wrong .bub{background:var(--red-fill);border-color:var(--red-fill);color:#fff}
.opt.right{border-color:var(--accent-ink);background:var(--tint)}
.opt.wrong{border-color:var(--red);background:var(--red-tint)}
.opt.right,.opt.wrong{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.opt.right>svg{color:var(--accent-ink)}.opt.wrong>svg{color:var(--red-ink)}
.opt>svg{width:20px;height:20px;margin-top:1px}
.answer-box{width:100%;min-height:96px;background:var(--surface);border:1.5px solid var(--line-strong);border-radius:var(--r);padding:14px;font-size:var(--t-md);resize:vertical}
.answer-box:focus{outline:none;border-color:var(--accent-ink)}
.verdict{border-radius:var(--r);padding:14px;margin-top:12px;line-height:1.45;font-size:16px}
.verdict b{font-family:var(--hand);font-weight:400;font-size:var(--t-xl)}
.verdict.ok{background:var(--tint);border:1.5px solid var(--accent-ink)}
.verdict.no{background:var(--red-tint);border:1.5px solid var(--red)}
.verdict.no b{color:var(--red-ink)}
.verdict button{margin-top:10px;font-family:var(--hand);font-size:19px;color:var(--accent-ink);text-decoration:underline;text-underline-offset:4px;min-height:36px}
.weak{padding:12px 0;border-bottom:1px solid var(--rule)}
.weak:last-child{border-bottom:0}
.weak-top{display:flex;justify-content:space-between;gap:10px;align-items:baseline}
.weak-top b{font-size:16px}
.tagline{font-family:var(--hand);font-size:18px}
.sheet .check-list label,.check-list label{display:flex;align-items:center;gap:12px;padding:12px;border-radius:var(--r-sm);background:var(--bg);border:1px solid var(--rule);margin-bottom:6px;font-size:16px;color:var(--text);font-weight:500;line-height:1.3}
.check-list input{width:20px;height:20px;accent-color:var(--accent);margin:0;flex:none}
.check-list .grp{font-family:var(--hand);font-size:18px;color:var(--accent-ink);margin:14px 0 6px}
.vs{display:flex;justify-content:center;gap:22px;align-items:center;margin:18px 0 6px}
.vs>div{text-align:center}.vs b{display:block;font-family:var(--hand);font-weight:400;font-size:56px;line-height:1;color:var(--accent-ink)}.vs span{color:var(--muted);font-size:var(--t-xs)}

/* ---------- calendar ---------- */
.cal-card{background:var(--surface);border:1.5px solid var(--line-strong);border-radius:var(--r);padding:10px 10px 12px}
.cal-nav{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px;border-bottom:1px solid var(--rule)}
.cal-nav b{font-family:var(--hand);font-weight:400;font-size:var(--t-xl);color:var(--accent-ink)}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:2px}
.wd{text-align:center;font-family:var(--hand);font-size:16px;color:var(--muted);padding:6px 0 2px}
.day{aspect-ratio:1/1;max-height:40px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-family:var(--hand);font-size:20px;line-height:1;color:var(--text);margin:0 auto;width:100%;max-width:40px;border:1.5px solid transparent}
.day.other{color:var(--muted)}
.day.today{color:var(--red-ink);border-color:var(--red)}
.day.sel{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
/* today stays circled in red pen even when it is the selected day */
.day.today.sel{border-color:var(--accent);box-shadow:0 0 0 2px var(--surface),0 0 0 3.5px var(--red)}
.cal-grid{row-gap:6px}
.dots{display:flex;gap:3px;height:5px}
.dots i{width:5px;height:5px;border-radius:50%}
.day.sel .dots i{background:var(--on-accent)!important}
.event{display:flex;align-items:center;gap:12px;width:100%;text-align:left;padding:12px 0;border-bottom:1px solid var(--rule)}
.stack>.event:last-child{border-bottom:0}
.stack:has(>.event){gap:0}
.event .txt{flex:1;min-width:0}
.event b{display:block;font-size:16px}
.trk.datechip{width:40px;font-size:26px;line-height:1;color:var(--accent-ink)}
.trk.datechip small{display:block;font-size:14px;color:var(--muted)}
.event .count{font-size:17px}
.typechips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.typechips button{min-height:38px;padding:4px 12px;border-radius:var(--r-sm);background:var(--bg);border:1.5px solid var(--line);font-family:var(--hand);font-size:18px}
.typechips button.on{border-color:currentColor;background:var(--surface)}

/* ---------- ask ai ---------- */
#chat .wrap{display:flex;flex-direction:column;height:100%;padding-bottom:10px}
#chat{overflow:hidden}
.msgs{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:10px;padding:6px 0 12px}
.msg{max-width:84%;padding:11px 14px;border-radius:12px;line-height:1.45;font-size:16px;white-space:pre-wrap;word-wrap:break-word}
.msg.user{align-self:flex-end;background:var(--accent);color:var(--on-accent);border-bottom-right-radius:3px}
.msg.model{align-self:flex-start;border:1.5px solid var(--line);border-bottom-left-radius:3px;padding-left:28px;
  background:linear-gradient(90deg,transparent 14px,var(--paper-margin) 14px,var(--paper-margin) 15.5px,transparent 15.5px),var(--surface)}
.msg.err{border-color:var(--red);color:var(--red-ink)}
.typing{display:flex;gap:4px;padding:16px}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:blink 1s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes blink{0%,100%{opacity:.3}50%{opacity:1}}
.suggest{display:flex;flex-direction:column;gap:8px;margin:18px auto 0;max-width:420px;text-align:left}
.suggest button{min-height:44px;padding:8px 14px;text-align:left;border-radius:var(--r-sm);background:var(--surface);border:1.5px solid var(--line);font-size:var(--t-sm);color:var(--text)}
.chat-empty{margin:auto 0;text-align:center;padding:10px}
.chat-empty .big-ic{display:flex;justify-content:center;color:var(--accent-ink);margin:0 auto 6px}
.chat-empty .big-ic svg{width:34px;height:34px}
.chat-empty h3{margin:0 0 6px;font-family:var(--hand);font-weight:400;font-size:var(--t-2xl);line-height:1.1;color:var(--accent-ink)}
/* free users see a real-looking example of Ask AI instead of a lock */
.chat-preview{text-align:center}
.pv-thread{position:relative;display:flex;flex-direction:column;gap:10px;text-align:left;padding:30px 14px 14px;border:1.5px dashed var(--line-strong);border-radius:var(--r);opacity:.95}
.pl-count{margin:-6px 0 16px;color:var(--muted);font-size:14px;min-height:20px}
/* share: show the friend's-eye view of the set instead of a long link */
.share-preview{margin:4px 0 18px}
.sp-label{display:block;font-family:var(--hand);font-size:17px;color:var(--muted);margin-bottom:10px}
.sp-stack{position:relative;padding-bottom:14px}
.sp-stack i{position:absolute;left:0;right:0;top:0;bottom:14px;border:1.5px solid color-mix(in srgb,var(--line) 70%,transparent);border-radius:var(--r);background:var(--surface2)}
.sp-stack i:nth-child(1){transform:translateY(12px) scale(.92);opacity:.6}
.sp-stack i:nth-child(2){transform:translateY(6px) scale(.96);opacity:.85}
.sp-card{position:relative;display:flex;flex-direction:column;gap:10px;min-height:128px;padding:14px 16px 12px 50px;border:1.5px solid var(--line-strong);border-radius:var(--r);box-shadow:var(--lift);
  background:linear-gradient(90deg,transparent 34px,var(--paper-margin) 34px,var(--paper-margin) 35.5px,transparent 35.5px),repeating-linear-gradient(180deg,transparent 0 31px,var(--paper-rule) 31px 32px) 0 12px/100% calc(100% - 12px) no-repeat,var(--surface)}
.sp-name{font-family:var(--hand);font-size:22px;color:var(--accent-ink);line-height:1.1}
.sp-q{font-size:16px;font-weight:600;line-height:1.4;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}
.sp-foot{margin-top:auto;font-family:var(--hand);font-size:17px;color:var(--muted)}
.pv-tag{position:absolute;top:6px;left:14px;font-family:var(--hand);font-size:17px;color:var(--muted)}
.pv-thread .msg{max-width:92%}
.composer{display:flex;gap:8px;align-items:flex-end;background:var(--surface);border:1.5px solid var(--line-strong);border-radius:var(--r-lg);padding:6px 6px 6px 14px}
.composer textarea{flex:1;border:0;background:transparent;resize:none;font-size:var(--t-md);line-height:1.4;padding:8px 0;max-height:120px;outline:none}
.send{width:44px;height:44px;border-radius:var(--r);background:var(--accent);color:var(--on-accent);display:grid;place-items:center;flex:none}

/* ---------- sheets ---------- */
.overlay{position:fixed;inset:0;background:rgba(6,10,28,.55);display:flex;align-items:flex-end;justify-content:center;z-index:50;animation:fade .15s}
.sheet{background:var(--surface);color:var(--text);width:100%;max-width:600px;max-height:92vh;max-height:92dvh;overflow:auto;border-radius:var(--r-lg) var(--r-lg) 0 0;border-top:1.5px solid var(--line-strong);padding:22px 18px calc(22px + var(--sb));animation:up .22s cubic-bezier(.2,.8,.2,1)}
@media(min-width:640px){.overlay{align-items:center}.sheet{border-radius:var(--r-lg);border:1.5px solid var(--line-strong)}}
.sheet h3{margin:0 0 14px;font-family:var(--hand);font-weight:400;font-size:var(--t-2xl);line-height:1.1;color:var(--accent-ink)}
.sheet h2{margin:10px 0 6px;font-family:var(--hand);font-weight:400;font-size:34px;line-height:1.05;color:var(--accent-ink)}
.sheet label{display:block;font-size:var(--t-sm);color:var(--muted);font-weight:600;margin:0 0 6px}
.sheet input:not([type=checkbox]),.sheet textarea,.sheet select{width:100%;background:var(--bg);border:1.5px solid var(--line-strong);border-radius:var(--r);padding:13px 14px;font-size:var(--t-md);margin-bottom:16px;resize:vertical;-webkit-appearance:none;appearance:none}
.sheet textarea{min-height:84px}
.sheet select{padding-right:40px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b86c5' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:18px}
.sheet input:focus,.sheet textarea:focus,.sheet select:focus{outline:none;border-color:var(--accent-ink)}
.sheet .sub{margin-bottom:16px}
.sheet .label:first-of-type{margin-top:4px}
@keyframes fade{from{opacity:0}}@keyframes up{from{transform:translateY(40px);opacity:0}}
.perm-icon{display:flex;justify-content:center;color:var(--accent-ink);margin:4px auto 8px}
.perm-icon svg{width:36px;height:36px}
.seg{display:flex;border:1.5px solid var(--line-strong);border-radius:var(--r);padding:3px;gap:3px}
.seg button{flex:1;min-height:42px;border-radius:var(--r-sm);font-family:var(--hand);font-size:19px;color:var(--muted)}
.seg button.on{background:var(--accent);color:var(--on-accent)}
/* theme picker: each option shows a tiny ruled page in that theme */
.seg button{display:flex;flex-direction:column;align-items:center;gap:6px;padding:10px 6px 8px}
.swatch{width:44px;height:30px;border-radius:4px;border:1.5px solid var(--line-strong);position:relative;overflow:hidden;
  background:linear-gradient(90deg,transparent 9px,rgba(211,47,47,.55) 9px,rgba(211,47,47,.55) 10px,transparent 10px),repeating-linear-gradient(180deg,transparent 0 6px,rgba(107,134,197,.45) 6px 7px),var(--sw)}
.sw-light{--sw:#fbfcfe}
.sw-dark{--sw:#0f1631}
.sw-system{background:linear-gradient(90deg,transparent 9px,rgba(211,47,47,.55) 9px,rgba(211,47,47,.55) 10px,transparent 10px),repeating-linear-gradient(180deg,transparent 0 6px,rgba(107,134,197,.45) 6px 7px),linear-gradient(135deg,#fbfcfe 50%,#0f1631 50%)}
.seg button.on .swatch{border-color:var(--on-accent)}
.ink-dot{width:30px;height:30px;border-radius:50%;border:3px solid var(--surface);box-shadow:0 0 0 1.5px var(--line-strong)}
.seg button.on .ink-dot{box-shadow:0 0 0 2px var(--on-accent)}
.swatches{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.swatches button{width:40px;height:40px;border-radius:50%;border:3px solid var(--surface);box-shadow:0 0 0 1.5px var(--line)}
.swatches button.on{box-shadow:0 0 0 2.5px var(--text)}
.rowline{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:4px 2px 12px;font-weight:600}
.pw-head{text-align:center;padding-top:30px;position:relative}
.pw-head>.pro{position:absolute;top:-6px;right:0}
/* paywall hero: the student's own photo / PDF / question, then what Premium turns it into */
.pw-hero{display:flex;align-items:center;justify-content:center;gap:14px;margin:4px 0 14px}
.pw-photo{width:96px;height:124px;border-radius:6px;overflow:hidden;border:1.5px solid var(--line-strong);box-shadow:var(--lift);transform:rotate(-4deg);background:#000}
.pw-photo img{width:100%;height:100%;object-fit:cover;display:block}
.pw-arrow{color:var(--muted)}.pw-arrow svg{width:26px;height:26px}
.pw-cards{position:relative;width:104px;height:74px}
.pw-cards i{position:absolute;inset:0;border:1.5px solid var(--line-strong);border-radius:6px;background:linear-gradient(90deg,transparent 14px,var(--paper-margin) 14px,var(--paper-margin) 15.5px,transparent 15.5px),repeating-linear-gradient(180deg,transparent 0 13px,var(--paper-rule) 13px 14px),var(--surface);display:grid;place-items:center;color:var(--accent-ink)}
.pw-cards i:nth-child(1){transform:rotate(-8deg) translate(-8px,6px)}
.pw-cards i:nth-child(2){transform:rotate(5deg) translate(8px,2px)}
.pw-cards i svg{width:26px;height:26px}
.pw-steps{display:flex;flex-direction:column;gap:6px}
.pw-steps i{width:30px;height:30px;border-radius:50%;border:1.5px solid var(--accent-ink);display:grid;place-items:center;font-style:normal;font-family:var(--hand);font-size:17px;color:var(--accent-ink)}
.pw-file{width:96px;height:120px;border:1.5px solid var(--line-strong);border-radius:6px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--accent-ink);background:var(--surface2);transform:rotate(-4deg)}
.pw-file svg{width:36px;height:36px}.pw-file small{font-size:11px;color:var(--muted);max-width:86px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pw-q{display:flex;justify-content:flex-end;margin:6px 0 14px}.pw-q .msg{max-width:90%;text-align:left}
.pw-head.has-hero h2{margin-top:4px}
.perks li.hl{background:var(--tint);margin:0 -10px;padding:12px;border-radius:var(--r);border-bottom-color:transparent}
.price{font-family:var(--hand);font-size:64px;line-height:1;margin:6px 0 16px;color:var(--accent-ink);font-variant-numeric:tabular-nums}
.price span{font-size:22px;color:var(--muted)}
.perks{list-style:none;padding:0;margin:0 0 20px;display:flex;flex-direction:column;border-top:1.5px solid var(--accent-ink)}
.perks li{display:flex;gap:12px;align-items:flex-start;padding:12px 2px;border-bottom:1px solid var(--rule)}
.perks li>svg{color:var(--accent-ink);margin-top:2px}
.perks b{display:block}
.perks span{color:var(--muted);font-size:var(--t-sm)}
.rv-card{position:relative;background:var(--bg);border:1.5px solid var(--line);border-radius:var(--r);padding:10px 48px 0 10px}
.rv-card textarea{min-height:46px!important;margin-bottom:10px!important;background:var(--surface)!important;padding:10px!important;font-size:16px!important}
.rv-x{position:absolute;top:6px;right:4px;width:40px;height:40px;border-radius:50%;color:var(--muted);font-size:22px;line-height:1}
.rv-num{font-family:var(--hand);font-size:17px;color:var(--accent-ink);margin:0 0 6px}
.toast{position:fixed;left:50%;bottom:calc(var(--nav-h) + var(--sb) + 18px);transform:translateX(-50%);background:var(--accent);color:var(--on-accent);padding:12px 18px;border-radius:var(--r);font-weight:600;font-size:var(--t-sm);z-index:80;box-shadow:var(--shadow);max-width:90vw;text-align:center;animation:fade .2s}
body.focus .toast{bottom:calc(92px + var(--sb))}
/* worked solution: circled step numbers joined by a pencil line down the margin */
.steps{list-style:none;counter-reset:step;padding:0;margin:16px 0;display:flex;flex-direction:column;gap:16px;line-height:1.5;font-size:16px;position:relative}
.steps::before{content:"";position:absolute;left:14px;top:14px;bottom:14px;border-left:1.5px dashed var(--line-strong)}
.steps li{counter-increment:step;position:relative;padding-left:44px;min-height:30px;padding-top:3px}
.steps li::before{content:counter(step);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--surface);border:1.5px solid var(--accent-ink);font-family:var(--hand);font-size:18px;color:var(--accent-ink)}
.idea{background:var(--bg);border:1px solid var(--rule);border-radius:var(--r);padding:12px 14px;line-height:1.45;font-size:16px}
/* the final answer gets boxed, the way you box an answer on homework */
.boxed-answer{width:fit-content;min-width:150px;max-width:100%;margin:10px 0 0 44px;padding:10px 18px 12px;border:2px solid var(--accent-ink);border-radius:3px;outline:1.5px solid var(--accent-ink);outline-offset:3px;font-size:20px;font-weight:600;line-height:1.35;transform:rotate(-.6deg);animation:fade .3s}
.boxed-answer b{display:block;font-family:var(--hand);font-weight:400;font-size:17px;color:var(--muted);margin-bottom:2px}
.reveal{width:100%;min-height:52px;padding:12px;border-radius:var(--r);border:1.5px dashed var(--accent-ink);color:var(--accent-ink);font-family:var(--hand);font-size:20px;margin-top:4px}
.sync-ok{color:var(--good);font-weight:700;font-size:var(--t-xs);flex:none}
#sh-url{font-size:var(--t-xs)!important;color:var(--muted)!important}

/* class colours: full strength by day, softened toward paper ink at night so they don't glare on navy */
[style*="--pen-raw"]{--pen:var(--pen-raw)}
[data-theme=dark] [style*="--pen-raw"]{--pen:color-mix(in srgb,var(--pen-raw) 72%,#dfe5fb)}
/* more colour: the next card is tinted with its class, and the two quick actions get their own inks */
.un-card{background-color:color-mix(in srgb,var(--pen,var(--surface)) 20%,var(--surface))!important}
.un-foot>span:first-child{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.un-go{font-size:17px;padding:6px 10px 5px}
.quick .btn[data-act="go-camera"]{background:color-mix(in srgb,var(--red) 18%,var(--surface2))!important;color:var(--red-ink)}
.quick .btn[data-act="upload"]{background:color-mix(in srgb,#2fa37a 20%,var(--surface2))!important;color:color-mix(in srgb,#2fa37a 55%,var(--text))}
/* paper objects sit on the page: soft lift, faint edge, no hard outline */
.today-box,.cal-card,.stat-row,.scorecard,.un-card,.q,.composer,.face,.empty,.opt{border-color:color-mix(in srgb,var(--line) 70%,transparent)}
.today-box,.cal-card,.stat-row,.scorecard,.un-card,.q,.face{box-shadow:var(--lift)}
.composer:focus-within{border-color:var(--accent-ink)}
.opt.right{border-color:var(--accent-ink)}.opt.wrong{border-color:var(--red)}
.un-back,.deck-back{border-color:color-mix(in srgb,var(--line) 60%,transparent)}
/* daily goal stamp */
.goal-stamp{position:fixed;left:50%;top:38%;z-index:95;pointer-events:none;display:flex;flex-direction:column;align-items:center;gap:2px;padding:16px 30px 14px;border:3px solid var(--red);outline:2px solid var(--red);outline-offset:4px;border-radius:6px;color:var(--red-ink);background:var(--surface);box-shadow:var(--lift);transform:translate(-50%,-50%) rotate(-7deg);animation:stamp-in 2.6s cubic-bezier(.2,.8,.2,1) both}
.goal-stamp{text-align:center}
.goal-stamp b{font-family:var(--hand);font-weight:400;font-size:44px;line-height:1;letter-spacing:.03em;text-transform:uppercase}
.goal-stamp small{font-family:var(--hand);font-size:20px;color:var(--muted)}
.gs-mark svg{width:34px;height:34px}
@keyframes stamp-in{0%{opacity:0;transform:translate(-50%,-50%) rotate(-7deg) scale(2.2)}12%{opacity:1;transform:translate(-50%,-50%) rotate(-7deg) scale(.94)}18%{transform:translate(-50%,-50%) rotate(-7deg) scale(1)}78%{opacity:1}100%{opacity:0;transform:translate(-50%,-56%) rotate(-7deg) scale(1)}}
/* ---------- first launch: a playable deck ---------- */
.welcome{position:fixed;inset:0;z-index:70;overflow-y:auto;background:var(--bg);padding:calc(18px + var(--st)) 20px calc(20px + var(--sb))}
[data-theme=dark] .welcome{background:linear-gradient(180deg,var(--bg-top,var(--bg)),var(--bg) 50%,var(--bg-bot,var(--bg)))}
.wl-inner{max-width:460px;margin:0 auto;min-height:100%;display:flex;flex-direction:column}
.wl-logo{font-family:var(--hand);font-weight:400;font-size:52px;line-height:1;margin:6px 0 0;color:var(--accent-ink);display:flex;align-items:center;gap:12px}
.wl-logo::after{content:"";width:22px;height:30px;background:repeating-linear-gradient(90deg,var(--red) 0 4px,transparent 4px 7px)}
.wl-tag{color:var(--muted);font-size:16px;line-height:1.45;margin:8px 0 6px;max-width:34ch;text-wrap:pretty}
.wl-stage{flex:1;display:flex;flex-direction:column;justify-content:center;min-height:380px}
.welcome .deck{margin:14px 0 22px}
.welcome .deck .flip{height:min(46vh,320px);margin:0}
.welcome .ticks{margin:0}
.wl-hint{text-align:center;margin:0;color:var(--muted);font-family:var(--hand);font-size:19px}
.wl-next{align-self:center;display:inline-flex;align-items:center;gap:4px;min-height:44px;padding:4px 12px;margin-top:4px;color:var(--accent-ink);font-family:var(--hand);font-size:19px}
.wl-next svg{width:16px;height:16px}
.wl-done .face{align-items:center;text-align:center;padding:24px 26px 46px 58px}
.wl-done .face::before{display:none}
.wl-done-mark{display:flex;justify-content:center;color:var(--accent-ink);margin-bottom:8px}
.wl-done-mark svg{width:48px;height:48px}
.wl-actions{display:flex;flex-direction:column;gap:10px;margin-top:8px}
.wl-actions .linkbtn{margin-top:0}
.btn.nudge{animation:nudge 1.2s cubic-bezier(.2,.8,.2,1) 2}
@keyframes nudge{0%,100%{transform:none}30%{transform:translateY(-4px)}60%{transform:translateY(1px)}}
/* hand-made touches: a pen-drawn wavy rule under page titles, and washi tape holding paper to the page */
.top:has(h1){position:relative;border-bottom:0;box-shadow:none;padding-bottom:16px}
.top:has(h1)::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:18px;background:var(--accent-ink);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 18' preserveAspectRatio='none'%3E%3Cpath d='M2 10.2C50 7.4 98 11.6 160 9.2S300 7.2 398 10.4' fill='none' stroke='black' stroke-width='2.6' stroke-linecap='round'/%3E%3Cpath d='M30 11.8C120 9.9 210 12.5 330 10.7' fill='none' stroke='black' stroke-width='1.2' stroke-linecap='round'/%3E%3C/svg%3E") center/100% 100% no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 18' preserveAspectRatio='none'%3E%3Cpath d='M2 10.2C50 7.4 98 11.6 160 9.2S300 7.2 398 10.4' fill='none' stroke='black' stroke-width='2.6' stroke-linecap='round'/%3E%3Cpath d='M30 11.8C120 9.9 210 12.5 330 10.7' fill='none' stroke='black' stroke-width='1.2' stroke-linecap='round'/%3E%3C/svg%3E") center/100% 100% no-repeat}
.up-next::after,.scorecard::after{content:"";position:absolute;z-index:4;width:78px;height:24px;border-radius:2px;pointer-events:none;
  background:repeating-linear-gradient(135deg,rgba(255,255,255,.2) 0 5px,transparent 5px 10px),color-mix(in srgb,var(--red) 62%,transparent);box-shadow:0 1px 3px rgba(0,0,0,.3)}
.up-next::after{top:-10px;left:50%;margin-left:-39px;transform:rotate(-3deg)}
.scorecard::after{top:-11px;right:26px;transform:rotate(4deg)}
/* ---------- accessibility: focus, screen readers, motion ---------- */
:focus-visible{outline:2.5px solid var(--accent-ink);outline-offset:2px}
.btn:focus-visible,.icon-btn:focus-visible,.opt:focus-visible,.set:focus-visible,.event:focus-visible{outline-offset:3px}
.sheet input:focus-visible,.sheet textarea:focus-visible,.sheet select:focus-visible,.answer-box:focus-visible,.composer textarea:focus-visible{outline:none}
.composer:focus-within{border-color:var(--accent-ink)}
#camera :focus-visible{outline-color:#fff}
body.cam-paper #camera :focus-visible{outline-color:var(--accent-ink)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.sheet:focus,[tabindex="-1"]:focus{outline:none}
.flip:focus-visible{outline-offset:4px}
.sub,.fine,.meta,.perks span,.empty,.msg,.steps,.idea{text-wrap:pretty}
.top h1,.top h2,.sheet h2,.sheet h3,.cam-msg b{text-wrap:balance}
::selection{background:color-mix(in srgb,var(--accent-ink) 30%,transparent)}
::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}::-webkit-scrollbar-track{background:transparent}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .spinner{animation-duration:1.6s!important;animation-iteration-count:infinite!important}
  .typing i{animation:none!important;opacity:.7}
  .pen-circle{animation:none!important;stroke-dashoffset:0}
  .cam-art i{animation:none!important;transform:var(--to)!important;opacity:1}
  .deck .flip.enter{animation:none!important}
  .btn.nudge{animation:none!important}
  .goal-stamp{animation:stamp-fade 2.6s both!important}
  @keyframes stamp-fade{0%,80%{opacity:1}100%{opacity:0}}
  .goal-fill{transition:none!important}
  .flip-inner{transform:none!important}.face{transition:opacity .15s!important}.face.back{transform:none;opacity:0}.flip.on .face.back{opacity:1}.flip.on .face.front{opacity:0}}


/* =========================================================================
   POP: the Duolingo x Snapchat look
   Chunky buttons and cards with a darker bottom edge (they look pressable),
   bright flat colour, a big camera button, one rounded black-weight font.
   Structure below applies to every ink; "pop" (yellow on black / white) is the default.
   ========================================================================= */
@font-face{font-family:"Pop";src:url(fonts/nunito-400.woff2) format("woff2");font-weight:100 500;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Pop";src:url(fonts/nunito-700.woff2) format("woff2");font-weight:600 800;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Pop";src:url(fonts/nunito-900.woff2) format("woff2");font-weight:900;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Pop Display";src:url(fonts/nunito-900.woff2) format("woff2");font-weight:100 900;font-display:swap;size-adjust:84%;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
:root{--hand:"Pop Display","Nunito",ui-rounded,system-ui,sans-serif;--sans:"Pop","Nunito",ui-rounded,system-ui,sans-serif;--r:16px;--r-sm:12px;--r-lg:26px;--nav-h:68px;--accent-3d:color-mix(in srgb,var(--accent) 70%,#000);--green:#58cc02;--green-3d:#3f9a00;--orange:#ff9600}
[data-theme=dark][data-ink=pop]{--desk:#050506;--bg:#0d0d0f;--bg-top:#0d0d0f;--bg-bot:#0d0d0f;--surface:#18191c;--surface2:#232428;--rule:#2b2d32;--trk:#8d9097;--line:#34363b;--line-strong:#4d5056;--text:#ffffff;--muted:#abaeb4;--pencil:#868a91;--accent:var(--a);--on-accent:var(--a-on);--accent-ink:var(--a-ink-d);--accent-3d:var(--a-3d);--good:#58cc02;--tint:color-mix(in srgb,var(--a) 13%,transparent);--paper-rule:transparent;--paper-margin:transparent;--nav-bg:#0d0d0f;--red:#ff4b4b;--red-ink:#ff7b7b;--red-fill:#ea2b2b;--red-tint:rgba(255,75,75,.14);--lift:none;--grain:0}
[data-theme=light][data-ink=pop]{--desk:#efefef;--bg:#ffffff;--surface:#ffffff;--surface2:#f4f4f5;--rule:#e5e5e5;--trk:#777;--line:#e5e5e5;--line-strong:#cfcfcf;--text:#3c3c3c;--muted:#777777;--pencil:#afafaf;--accent:var(--a);--on-accent:var(--a-on);--accent-ink:var(--a-ink-l);--accent-3d:var(--a-3d);--good:#58a700;--tint:color-mix(in srgb,var(--a) 14%,transparent);--paper-rule:transparent;--paper-margin:transparent;--nav-bg:#ffffff;--red:#ff4b4b;--red-ink:#d93b3b;--red-fill:#ea2b2b;--red-tint:rgba(255,75,75,.1);--lift:none;--grain:0}

/* retire the notebook decoration */
body::after,.up-next::after,.scorecard::after,.top:has(h1)::after,.today-box::before,.un-card::before,.flip .face::before,.sp-card::before,.pro::after,.wl-logo::after,.tab.active:not(.cam)::after{display:none!important}
html[data-theme=dark] body{background:var(--bg)}
.pen-circle{display:none}
.trk:not(.datechip){display:none}

/* type */
body{font-family:var(--sans);font-weight:600}
.top h1{font-size:36px;color:var(--text);letter-spacing:0}
.top:has(h1){padding-bottom:6px}
.top h2{font-size:28px;color:var(--text)}
.label{font-size:24px;color:var(--text);border-bottom:0;padding-bottom:0;margin:34px 0 12px}
.label .count{font-size:16px;color:var(--muted)}
.page-date{font-family:var(--sans);font-weight:800;font-size:14px;color:var(--muted);text-align:left;transform:none;margin:-8px 0 14px}
.sheet h3,.sheet h2,.cam-msg b,.chat-empty h3,.starter b,.subj-empty b,.price,.sname,.cal-nav b,.stat b,.big,.vs b{color:var(--text)}
.sub,.meta{font-weight:600}

/* chunky buttons: a darker bottom edge, press down on tap */
.btn,.btn:not(.primary):not(.good):not(.bad):not(.danger):not(.ghost):not(.glass-btn){font-size:18px;letter-spacing:.06em;text-transform:uppercase;min-height:54px;border:2px solid var(--line);background:var(--surface);color:var(--text);border-radius:var(--r);box-shadow:0 4px 0 var(--line)}
.btn.sm{min-height:46px;font-size:16px}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent);box-shadow:0 4px 0 var(--accent-3d)}
.btn.good{background:var(--green);border-color:var(--green);color:#0b2a00;box-shadow:0 4px 0 var(--green-3d)}
.btn.bad,.btn.danger{background:var(--red-tint);border-color:var(--red);color:var(--red-ink);box-shadow:0 4px 0 color-mix(in srgb,var(--red) 65%,#000)}
.btn.ghost{background:transparent;border-color:transparent;box-shadow:none;text-decoration:none;color:var(--accent-ink)}
.btn:active:not(:disabled){transform:translateY(4px);box-shadow:0 0 0 transparent}
.btn.ghost:active:not(:disabled){transform:none}
@media (hover:hover){.btn:not(.primary):not(.good):not(.bad):not(.danger):not(.glass-btn):not(.ghost):hover{background:var(--surface2)}}
.linkbtn{font-size:17px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent-ink);text-decoration:none}
.icon-btn{border-radius:14px;background:var(--surface);border:2px solid var(--line);box-shadow:0 3px 0 var(--line);color:var(--text)}
.icon-btn:active{transform:translateY(3px);box-shadow:none}
.icon-btn.sm{background:transparent;border:0;box-shadow:none;color:var(--muted)}
.mini{border-radius:12px;border:2px solid var(--line);background:var(--surface);box-shadow:0 3px 0 var(--line);font-size:15px;letter-spacing:.06em;text-transform:uppercase;color:var(--text)}
.add-row{border:2px dashed var(--line-strong);border-radius:var(--r);justify-content:center;min-height:52px;color:var(--muted);margin-top:4px;font-size:18px}
.subject .add-row{color:var(--muted);border-top-color:var(--line-strong)}

/* chunky cards */
.today-box,.cal-card,.stat-row,.scorecard,.q,.card,.composer,.empty,.banner,.weak,.test-item.card,.set,.card-item,.event,.starter-chip,.tb-chip,.opt,.share-preview .sp-card,.pv-thread{border:2px solid var(--line);border-bottom-width:4px;border-radius:20px;background:var(--surface);box-shadow:none}
.today-box,.cal-card,.scorecard{overflow:hidden}
.today-box>*{border-bottom:2px solid var(--line)}
.today-box>*:last-child{border-bottom:0}
.tracklist>*{border-bottom:2px solid var(--line)}
.tracklist>*:last-child{border-bottom:2px solid var(--line)}
.set,.card-item,.event,.test-item.card{padding:14px 16px;margin-bottom:10px;border-bottom-width:4px}
.subj-body{gap:0}
.tracklist>.card-item,.tracklist>.event,.tracklist>.set{margin-bottom:10px}
.stack:has(>.event){gap:10px}
.set:active,.card-item.search-hit:active,.event:active,.test-item.card:active{transform:translateY(2px);border-bottom-width:2px}
.subj-head{border-bottom:0}
.sdot{width:14px;height:14px}
.subject .sdot{box-shadow:none}
.scount{color:var(--muted)}
.set .bar{max-width:none;height:12px}
.set .count{font-size:18px;color:var(--text)}
.set-name,.test-item .name{font-weight:800;font-size:17px}
.card-item .f{font-weight:800}
.trk.datechip{width:50px;padding:6px 0 4px;border-radius:12px;background:var(--surface2);color:var(--text);font-size:22px;text-align:center}
.trk.datechip small{color:var(--muted)}
.event .count{color:var(--text)}
.quick .btn{background:var(--surface)!important;color:var(--text);font-size:15px;letter-spacing:.04em;gap:6px;padding:0 8px;white-space:nowrap}
html[data-ink] .quick .btn[data-act="go-camera"],html[data-ink] .quick .btn[data-act="upload"]{background:var(--surface)!important;color:var(--text)}
.score{border-radius:12px;background:var(--surface2);padding:6px 12px;font-size:18px}
.score.ringed::before{display:none}
.score.ringed{background:color-mix(in srgb,currentColor 14%,transparent)}

/* progress: thick pills with a shine, like a lesson bar */
.bar{height:16px;border-radius:99px;background:var(--surface2);margin-top:10px;overflow:hidden}
.bar>i{position:relative;background:var(--green);border-radius:99px;min-width:16px}
.bar>i[style*="width:0%"]{min-width:0}
.bar>i::after{content:"";position:absolute;left:8px;right:8px;top:4px;height:4px;border-radius:99px;background:rgba(255,255,255,.35)}
.ticks i{height:12px;border-radius:99px;max-width:36px;background:var(--surface2)}
.ticks i.got{background:var(--green)}
.ticks i.miss{background:var(--red)}
.ticks i.half{background:linear-gradient(90deg,var(--green) 50%,var(--surface2) 50%)}
.ticks i.now{background:transparent;box-shadow:inset 0 0 0 2.5px var(--accent-ink)}
.ticks i.half.now{background:linear-gradient(90deg,var(--green) 50%,transparent 50%)}

/* streak: orange flame and gold days */
.flame,.flame.on{color:var(--orange)}
.flame:not(.on){color:var(--pencil)}
.streak b,.cd-when{color:var(--text)}
.wk i{width:20px;height:20px;border:2px solid var(--line-strong)}
.wk.on i{background:#ffc800;border-color:#e5ab00}
.wk.today i{box-shadow:0 0 0 2px var(--surface),0 0 0 4px var(--accent-ink)}
.wk small{font-size:13px;color:var(--muted)}
.count.s-bad,.cd-row .count.s-bad{color:var(--red-ink)}

/* the next card: one big flat button in the brand colour */
html[data-ink] .un-card{background:var(--accent)!important;color:var(--on-accent);border:0;border-radius:24px;padding:20px;min-height:150px;box-shadow:0 6px 0 var(--accent-3d)}
.un-q{color:var(--on-accent);font-family:var(--sans);font-weight:900;font-size:24px;line-height:1.25;margin-top:0}
.un-foot{color:color-mix(in srgb,var(--on-accent) 65%,transparent)}
.un-go{background:var(--on-accent);color:var(--accent);border-radius:14px;font-size:15px;letter-spacing:.06em;text-transform:uppercase;padding:10px 14px}
.un-back{border:0;border-radius:24px;background:var(--accent-3d)}
.up-next:active .un-card{transform:translateY(5px);box-shadow:0 1px 0 var(--accent-3d)}
@media (hover:hover){.up-next:hover .un-card{transform:none}}
.tb-label{color:var(--text);font-size:19px}
.tb-chip b{color:var(--text)}

/* bottom bar: Snapchat-style, full width, big camera button in the middle */
.tabbar{left:0;right:0;bottom:0;height:calc(var(--nav-h) + var(--sb));padding:0 max(8px,calc((100% - 600px)/2));border:0;border-top:2px solid var(--line);border-radius:0;box-shadow:none;background:var(--nav-bg);backdrop-filter:none;-webkit-backdrop-filter:none}
.tab{font-size:14px;letter-spacing:.02em;color:var(--muted)}
.tab.active{color:var(--accent-ink)}
.tab.cam .ring{width:64px;height:64px;margin-top:-22px;background:var(--accent);color:var(--on-accent);border:4px solid var(--bg);box-shadow:0 4px 0 var(--accent-3d)}
.tab.cam.active .ring{background:var(--accent)}
.tab.cam:active .ring{transform:translateY(3px);box-shadow:0 1px 0 var(--accent-3d)}
.tab svg{width:26px;height:26px}
body.on-camera:not(.cam-paper) .tabbar{background:rgba(0,0,0,.45);border-top-color:transparent}

/* flashcards: big, centred, a thick bottom edge */
.face{border:2px solid var(--line);border-bottom-width:6px;border-radius:28px;background:var(--surface);box-shadow:none;align-items:center;justify-content:center;text-align:center;padding:28px 24px 50px;font-family:var(--sans);font-weight:800;font-size:26px;line-height:1.3}
.face.back{background:var(--surface2);font-size:22px;font-weight:700}
.face .pre{text-align:center}
.face .hint{left:0;right:0;text-align:center;font-size:16px;color:var(--muted)}
.face.back .hint{color:var(--accent-ink)}
.deck-back{border:2px solid var(--line);border-bottom-width:6px;border-radius:28px;background:var(--surface2)}
.stamp{border-radius:14px;font-size:28px;border-width:3px;background:var(--surface)}
.st-got{color:var(--green)}
.st-miss{color:var(--red-ink)}
.wl-done .face{padding:24px}

/* test answers */
.q{font-weight:800;font-size:22px;padding:20px}
.opt{font-weight:700;border-bottom-width:4px;padding:14px 16px}
.opt:not(:disabled):active{transform:translateY(2px);border-bottom-width:2px}
.bub{border-radius:10px;width:32px;height:32px;border:2px solid var(--line-strong);color:var(--text)}
.opt.right{border-color:var(--green);background:color-mix(in srgb,var(--green) 14%,var(--surface))}
.opt.right .bub{background:var(--green);border-color:var(--green);color:#0b2a00}
.opt.right>svg{color:var(--green)}
.opt.wrong .bub{background:var(--red-fill);border-color:var(--red-fill)}
.verdict{border-radius:18px}
.verdict.ok{border-color:var(--green);background:color-mix(in srgb,var(--green) 14%,var(--surface))}

/* result cards */
.scorecard{padding:22px 18px 8px;background:var(--surface)}
.score-ring{width:auto;height:auto;margin:0 auto}
.score-num{font-size:88px;color:var(--accent-ink)}
.score-num small{color:var(--muted)}
.score-cap{color:var(--muted);font-size:20px}
.goal-stamp{border:0;outline:0;border-radius:24px;background:var(--green);color:#0b2a00;box-shadow:0 8px 0 var(--green-3d);padding:18px 30px 16px}
.goal-stamp small{color:#164a00}

/* chat */
.msg.user{background:var(--accent);color:var(--on-accent);border-radius:22px 22px 6px 22px;font-weight:700}
.msg.model{background:var(--surface2);border:0;border-radius:22px 22px 22px 6px;padding:12px 16px;font-weight:600}
.composer{border-radius:28px}
.send{background:var(--accent);color:var(--on-accent);border-radius:50%;box-shadow:0 3px 0 var(--accent-3d)}
.suggest button{border:2px solid var(--line);border-bottom-width:4px;border-radius:16px;background:var(--surface);font-weight:700;color:var(--text)}
.search input{border:2px solid var(--line);border-bottom-width:4px;border-radius:16px;background:var(--surface);font-weight:700}
.starter-chip{font-weight:900}

/* sheets and forms */
.sheet{border-radius:28px 28px 0 0;border-top:0;background:var(--surface)}
.sheet::before{content:"";display:block;width:42px;height:5px;border-radius:99px;background:var(--line-strong);margin:-10px auto 16px}
@media(min-width:640px){.sheet{border-radius:28px;border:2px solid var(--line)}}
.sheet input:not([type=checkbox]),.sheet textarea,.sheet select{border:2px solid var(--line);border-bottom-width:4px;border-radius:16px;background:var(--surface2);font-weight:700}
.sheet input:focus,.sheet textarea:focus,.sheet select:focus{border-color:var(--accent-ink)}
.seg{border:2px solid var(--line);border-radius:18px;background:var(--surface2);padding:4px}
.seg button{border-radius:14px;color:var(--muted)}
.seg button.on{background:var(--accent);color:var(--on-accent);box-shadow:0 3px 0 var(--accent-3d)}
.pro{border:0;border-radius:10px;background:var(--accent);color:var(--on-accent);font-size:15px;letter-spacing:.08em;text-transform:uppercase;padding:6px 10px 4px}
.pro.demo{background:var(--surface2);color:var(--text)}
.perks li.hl{background:var(--tint)}
.chip{border-radius:10px;border-width:2px}

/* calendar */
.day{font-size:22px;color:var(--text)}
.day.other{color:var(--muted)}
.day.today{border:2px solid var(--accent-ink);color:var(--text)}
.day.sel{background:var(--accent);color:var(--on-accent);border-color:var(--accent);box-shadow:0 3px 0 var(--accent-3d)}
.day.today.sel{box-shadow:0 3px 0 var(--accent-3d)}
.wd{color:var(--muted)}

/* camera + welcome */
.cam-art i{background:var(--surface);border:2px solid var(--line);border-bottom-width:5px;box-shadow:none}
.glass{border-radius:50%}
.glass-chip{border-radius:99px}
.cam-msg{background:var(--bg)}
.wl-logo{font-size:60px;color:var(--accent-ink)}
.pw-cards i{background:var(--surface);border:2px solid var(--line);border-bottom-width:4px}
.sp-card{background:var(--surface)}
.toast{border-radius:16px;background:var(--text);color:var(--bg);box-shadow:0 4px 0 rgba(0,0,0,.25)}

.modes .btn{gap:2px;padding:6px 8px}
.modes .btn small{text-transform:none;letter-spacing:0;font-size:12px;font-weight:700;opacity:.8;line-height:1.2}
.pen-top{border-bottom:0;padding-bottom:4px}

.weak{padding:14px 16px;margin-bottom:10px}
.tracklist>.weak{margin-bottom:10px}

/* readability pass: darker blue, grey and red in light mode, a darker green for text */
[data-theme=dark]{--green-ink:#58cc02}
[data-theme=light]{--green-ink:#3d8300}
[data-theme=light][data-ink=pop]{--muted:#666666;--red-ink:#c42a2a;--red-fill:#d82a2a}
[data-theme=dark][data-ink=pop]{--red-fill:#d82a2a}
.st-got,.opt.right>svg{color:var(--green-ink)}
.face.back .hint{color:var(--text);opacity:.75}
.wl-hint{text-wrap:balance}

/* ---------- app colours: the whole app in one accent. Sky is free, the rest are Premium ---------- */
:root,[data-accent=sky]{--a:#1cb0f6;--a-3d:#1593cc;--a-on:#04202e;--a-ink-d:#4cc4ff;--a-ink-l:#0b78a8}
[data-accent=sunny]{--a:#fffc00;--a-3d:#c2bf00;--a-on:#000000;--a-ink-d:#fffc00;--a-ink-l:#7a6a00}
[data-accent=grass]{--a:#58cc02;--a-3d:#3f9a00;--a-on:#0b2a00;--a-ink-d:#6fe21a;--a-ink-l:#2f7400}
[data-accent=pink]{--a:#ff4f9a;--a-3d:#d4337c;--a-on:#2a0016;--a-ink-d:#ff7db6;--a-ink-l:#b5135f}
[data-accent=violet]{--a:#a78bfa;--a-3d:#7f60e0;--a-on:#1b0b4a;--a-ink-d:#c0a9ff;--a-ink-l:#5e30d8}
[data-accent=orange]{--a:#ff9600;--a-3d:#d17a00;--a-on:#2a1500;--a-ink-d:#ffad33;--a-ink-l:#9a5300}
[data-accent=aqua]{--a:#00d4c8;--a-3d:#00a69c;--a-on:#002a27;--a-ink-d:#2eeadf;--a-ink-l:#00695f}
[data-accent=mono]{--a:#f2f2f2;--a-3d:#9a9a9a;--a-on:#0b0b0c;--a-ink-d:#f2f2f2;--a-ink-l:#17171a}
[data-theme=light][data-accent=mono]{--a:#17171a;--a-3d:#000000;--a-on:#ffffff}
/* swatch picker in Settings */
.acc-row{display:flex;flex-wrap:wrap;gap:12px;margin:2px 0 4px}
.acc{position:relative;width:48px;height:48px;border-radius:16px;background:var(--sw);border:2px solid color-mix(in srgb,var(--sw) 70%,#000);border-bottom-width:5px;display:grid;place-items:center;color:rgba(0,0,0,.65)}
.acc svg{width:20px;height:20px}
.acc.on{outline:3px solid var(--text);outline-offset:3px}
.acc:active{transform:translateY(2px);border-bottom-width:3px}
.acc.locked::after{content:"";position:absolute;inset:0;border-radius:14px;background:rgba(0,0,0,.18)}
.acc.locked svg{position:relative;z-index:1;color:#fff}

.pw-colors{display:flex;justify-content:center;gap:8px;margin:6px 0 14px;flex-wrap:wrap}
.pw-colors i{width:34px;height:34px;border-radius:12px;background:var(--sw);border:2px solid color-mix(in srgb,var(--sw) 70%,#000);border-bottom-width:5px}

/* ---------- profile, character, coins ---------- */
.av-btn{padding:0;overflow:hidden;border:0;background:none;width:44px;height:44px;border-radius:50%;box-shadow:0 3px 0 var(--line-strong)}
.av-btn svg,.av-glass svg{display:block;border-radius:50%}
.av-glass{padding:0;overflow:hidden}
.coins{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:999px;background:var(--surface2);font-weight:900;font-size:var(--t-lg);box-shadow:0 3px 0 var(--line-strong)}
.coins .ic{color:#ffc800;width:1.25em;height:1.25em}
.pf-hero{display:grid;justify-items:center;gap:12px;margin:8px 0 14px}
.pf-av{border-radius:50%;box-shadow:0 6px 0 var(--line-strong);line-height:0;border:4px solid var(--surface)}
.pf-av svg{border-radius:50%}
.pf-streak{display:flex;align-items:center;gap:6px;font-size:var(--t-md)}
.pf-streak .ic{color:#ff9600}.pf-streak span{color:var(--muted)}
.ltrack{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:6px 0 4px;padding:0}
.ltrack li{display:grid;justify-items:center;gap:2px;padding:10px 4px;border-radius:16px;background:var(--surface2);border:2px solid var(--line);border-bottom-width:4px}
.ltrack li.got{background:color-mix(in srgb,#ffc800 22%,var(--surface));border-color:#ffc800}
.lt-day{font-size:var(--t-xs);color:var(--muted);font-weight:900;text-transform:uppercase;letter-spacing:.04em}
.lt-coin{display:inline-flex;align-items:center;gap:3px;font-weight:900}
.lt-coin .ic{color:#ffc800}
.pf-note{margin:8px 2px 14px}
.pf-tabs{display:flex;gap:8px;overflow-x:auto;padding:4px 2px 10px;margin:0 -2px;scrollbar-width:none;position:sticky;top:0;background:var(--bg);z-index:2}
.pf-tabs::-webkit-scrollbar{display:none}
.pf-tabs button{flex:none;min-height:40px;padding:0 16px;border-radius:999px;background:var(--surface2);border:2px solid var(--line);font-weight:900;color:var(--text)}
.pf-tabs button.on{background:var(--accent);color:var(--on-accent);border-color:transparent;box-shadow:0 3px 0 var(--accent-3d)}
.pf-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding-bottom:24px}
.pf-opt{position:relative;display:grid;justify-items:center;align-content:start;gap:6px;padding:10px 6px 8px;border-radius:18px;background:var(--surface);border:2px solid var(--line);border-bottom-width:5px;min-height:112px;color:var(--text)}
.pf-opt:active{transform:translateY(2px);border-bottom-width:3px}
.pf-opt.on{border-color:var(--accent);background:var(--tint)}
.pf-opt svg.avatar{border-radius:50%}
.pf-sw{display:block;width:56px;height:56px;border-radius:50%;border:3px solid var(--surface);box-shadow:0 0 0 2px var(--line-strong)}
.pf-name{font-size:var(--t-sm);font-weight:700;text-align:center}
.pf-price{position:absolute;top:-8px;right:-4px;display:inline-flex;align-items:center;gap:3px;padding:2px 8px;border-radius:999px;background:#ffc800;color:#3a2a00;font-size:var(--t-xs);font-weight:900}
.pf-price .ic{width:1em;height:1em}
.pf-opt.locked svg.avatar,.pf-opt.locked .pf-sw{opacity:.72}
.pf-tag{position:absolute;top:-8px;right:-4px;width:24px;height:24px;border-radius:50%;background:var(--accent);color:var(--on-accent);display:grid;place-items:center}
.pf-tag svg{width:14px;height:14px}
.reward{display:grid;justify-items:center;text-align:center;gap:6px}
.reward h2{font-size:var(--t-3xl);margin:0}
.reward-coin{width:84px;height:84px;border-radius:50%;background:#ffc800;color:#3a2a00;display:grid;place-items:center;box-shadow:0 5px 0 #c99600;animation:pop-in .5s cubic-bezier(.3,1.6,.5,1) both}
.reward-coin svg{width:46px;height:46px;stroke-width:2.4}
.reward-streak{display:flex;align-items:center;gap:6px;font-weight:900;margin:2px 0 6px}
.reward-streak .ic{color:#ff9600}
.reward .ltrack{width:100%}.reward .stack{width:100%;margin-top:8px}
@keyframes pop-in{from{transform:scale(.4);opacity:0}to{transform:scale(1);opacity:1}}
@media (prefers-reduced-motion:reduce){.reward-coin{animation:none}}
.pf-av svg.avatar{width:168px;height:168px}
.pf-opt svg.avatar{width:64px;height:64px}
.av-btn svg.avatar{width:44px;height:44px}
.av-glass svg.avatar{width:40px;height:40px}
.pf-hero .btn{justify-self:center;width:auto;min-width:0;padding:0 20px}
.pf-av svg.avatar{width:136px;height:136px}
.pf-hero{gap:10px;margin:4px 0 10px}
.pf-grid{padding-top:10px}
.pf-try{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:center;padding:8px 12px;border-radius:18px;background:var(--tint);border:2px dashed var(--accent)}
.pf-try .btn{min-height:40px}
.pf-hero{padding:18px 12px 16px;border-radius:28px;background:radial-gradient(circle at 50% 30%,color-mix(in srgb,var(--bgc) 70%,transparent),color-mix(in srgb,var(--bgc) 18%,var(--surface)) 75%);border:2px solid color-mix(in srgb,var(--bgc) 55%,var(--line));border-bottom-width:5px;margin:4px 0 14px}
.pf-av{animation:av-pop .35s cubic-bezier(.3,1.5,.5,1)}
@keyframes av-pop{from{transform:scale(.88) rotate(-3deg)}to{transform:none}}
@media (prefers-reduced-motion:reduce){.pf-av{animation:none}}
.pf-streak{background:var(--surface);padding:6px 14px;border-radius:999px;font-weight:900}

/* player card on the Study home */
.player{display:flex;align-items:center;gap:14px;width:100%;text-align:left;padding:12px 14px;margin:0 0 14px;border-radius:26px;color:var(--text);background:linear-gradient(120deg,color-mix(in srgb,var(--bgc) 75%,var(--surface)),color-mix(in srgb,var(--bgc) 22%,var(--surface)));border:2px solid color-mix(in srgb,var(--bgc) 60%,var(--line));border-bottom-width:6px}
.player:active{transform:translateY(3px);border-bottom-width:3px}
.player-av{flex:none;line-height:0;border-radius:50%;border:3px solid #fff;box-shadow:0 4px 0 rgba(0,0,0,.18)}
.player-av svg.avatar{width:76px;height:76px;border-radius:50%}
.player-info{display:grid;gap:5px;min-width:0;flex:1}
.player-info b{font-size:var(--t-lg);color:#1a1a1f}
.player-info small{font-size:var(--t-sm);color:#3b3b44;font-weight:700}
.player-chips{display:flex;gap:8px}
.player-chips i{font-style:normal;display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:999px;background:#fff;color:#1a1a1f;font-weight:900;box-shadow:0 2px 0 rgba(0,0,0,.14)}
.chip-coin .ic{color:#e0a800}.chip-flame .ic{color:#ff7a00}
.player-go{flex:none;width:34px;height:34px;border-radius:50%;background:#fff;color:#1a1a1f;display:grid;place-items:center;box-shadow:0 3px 0 rgba(0,0,0,.14)}
.player-go svg{width:18px;height:18px}
.pf-av svg.avatar{width:176px;height:176px}
.pf-av{border:5px solid #fff;box-shadow:0 8px 0 rgba(0,0,0,.16),0 18px 30px -12px rgba(0,0,0,.35)}
.player{background:linear-gradient(120deg,var(--bgc),color-mix(in srgb,var(--bgc) 55%,#fff));border-color:color-mix(in srgb,var(--bgc) 70%,#000);border-bottom-color:color-mix(in srgb,var(--bgc) 60%,#000)}
.player-info b{font-size:var(--t-xl)}
.player-info small{color:#26262c}
.player::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:radial-gradient(circle at 12% 20%,rgba(255,255,255,.55),transparent 45%)}
.player{position:relative;overflow:hidden}
.player>*{position:relative;z-index:1}.player::after{z-index:0}

.reward{position:relative;overflow:hidden}
.coin-rain{position:absolute;inset:0;pointer-events:none}
.coin-rain i{position:absolute;top:-30px;left:var(--x);width:26px;height:26px;color:#e0a800;opacity:0;transform:scale(var(--s));animation:coin-fall 1.6s var(--d) ease-in both}
.coin-rain i svg{width:100%;height:100%;fill:#ffc800;stroke:#a87800}
@keyframes coin-fall{0%{opacity:0;transform:translateY(0) rotate(0) scale(var(--s))}15%{opacity:1}100%{opacity:0;transform:translateY(340px) rotate(300deg) scale(var(--s))}}
.coins.bump{animation:coin-bump .5s cubic-bezier(.3,1.7,.5,1)}
@keyframes coin-bump{0%{transform:scale(1.3)}100%{transform:none}}
@media (prefers-reduced-motion:reduce){.coin-rain{display:none}.coins.bump{animation:none}}

.pf-price.tier-rare{background:#7ad7ff;color:#05304a}
.pf-price.tier-epic{background:#ce82ff;color:#2a0a45}
.pf-price.tier-legend{background:linear-gradient(90deg,#ffc800,#ff7a00);color:#3a1a00}
.pf-opt.tier-epic{border-color:#ce82ff}
.pf-opt.tier-legend{border-color:#ffb000;background:color-mix(in srgb,#ffc800 10%,var(--surface))}
.pf-opt.on{border-color:var(--accent)}
.pf-opt.locked svg.avatar,.pf-opt.locked .pf-sw{opacity:.9}

.av-eyes{transform-box:fill-box;transform-origin:center;animation:av-blink 5s infinite}
@keyframes av-blink{0%,93%,100%{transform:scaleY(1)}96%{transform:scaleY(.08)}}
.pf-opt .av-eyes,.player .av-eyes,.av-btn .av-eyes{animation:none}
.pf-name-btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--hand);font-size:var(--t-2xl);line-height:1;padding:6px 14px;border-radius:999px;background:var(--surface);color:var(--text);border:2px solid transparent}
.pf-name-btn .ic{width:.7em;height:.7em;color:var(--muted)}
@media (prefers-reduced-motion:reduce){.av-eyes{animation:none}}
.pf-hero{background:radial-gradient(circle at 50% 28%,color-mix(in srgb,var(--bgc) 55%,#fff),var(--bgc) 80%);border-color:color-mix(in srgb,var(--bgc) 70%,#000)}

.deal{display:flex;align-items:center;gap:12px;width:100%;text-align:left;margin:4px 0 14px;padding:10px 12px;border-radius:22px;color:#fff;background:linear-gradient(120deg,#ff4b6e,#ff9600);border:2px solid #d9344f;border-bottom-width:6px;position:relative;overflow:hidden}
.deal:active{transform:translateY(3px);border-bottom-width:3px}
.deal-av{flex:none;line-height:0;border-radius:50%;border:3px solid #fff}
.deal-av svg.avatar{width:70px;height:70px;border-radius:50%}
.deal-info{display:grid;gap:2px;flex:1;min-width:0}
.deal-info small{font-size:var(--t-xs);font-weight:900;letter-spacing:.06em;color:#fff}
.deal-info b{font-size:var(--t-xl);color:#fff}
.deal-info span{display:flex;align-items:center;gap:8px;font-weight:900}
.deal-info s{opacity:.85}
.deal-info i{font-style:normal;display:inline-flex;align-items:center;gap:4px;background:#fff;color:#3a1a00;border-radius:999px;padding:2px 10px}
.deal-info i .ic{color:#e0a800}
.deal-go{flex:none;background:#fff;color:#b3153b;font-weight:900;padding:10px 16px;border-radius:14px;box-shadow:0 3px 0 rgba(0,0,0,.2);text-transform:uppercase;letter-spacing:.04em}
.pf-price s{opacity:.7;margin-right:2px}

/* sign-up character step */
.su-top{display:flex;gap:14px;align-items:center;margin:4px 0 10px}
.su-av{flex:none;line-height:0;border-radius:50%;border:4px solid var(--surface2);box-shadow:0 5px 0 var(--line-strong)}
.su-av svg.avatar{width:104px;height:104px;border-radius:50%}
.su-name{flex:1;min-width:0}.su-name small{color:var(--muted);font-size:var(--t-xs)}
.su-rows{display:grid;gap:8px;margin-top:10px;max-height:34vh;overflow:auto}
.su-row{display:grid;gap:4px}.su-label{font-size:var(--t-xs);font-weight:900;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.su-opts{display:flex;gap:8px;overflow-x:auto;padding:3px 2px 6px;scrollbar-width:none}
.su-opt{flex:none;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:var(--surface2);border:2px solid var(--line);border-bottom-width:4px;padding:0}
.su-opt.on{border-color:var(--accent);background:var(--tint)}
.su-opt i{display:block;width:26px;height:26px;border-radius:50%;box-shadow:0 0 0 2px var(--line-strong)}
.su-opt svg.avatar{width:38px;height:38px;border-radius:50%}
.su-mini{display:flex;gap:12px;align-items:center;margin:6px 0 10px;color:var(--muted)}
.su-mini svg.avatar{width:56px;height:56px;border-radius:50%;flex:none}
.acct-id{display:flex;align-items:center;gap:10px}.acct-id svg.avatar{width:36px;height:36px;border-radius:50%}
.acct-banner{display:flex;align-items:center;gap:12px;padding:12px;margin:0 0 12px;border-radius:20px;background:var(--surface);border:2px dashed var(--accent)}
.acct-banner>span{flex:none;width:36px;height:36px;border-radius:50%;background:var(--tint);color:var(--accent-ink);display:grid;place-items:center}
.acct-banner>div{flex:1;min-width:0;display:grid;gap:2px}.acct-banner small{color:var(--muted)}

.pf-av{position:relative}
.pf-av.celebrate{animation:av-jump .6s cubic-bezier(.3,1.6,.5,1)}
@keyframes av-jump{0%{transform:scale(.9)}40%{transform:scale(1.12) rotate(3deg)}100%{transform:none}}
.spark{position:absolute;left:50%;top:50%;width:12px;height:12px;margin:-6px;border-radius:3px;background:var(--c);transform:rotate(var(--a)) translateY(0);animation:spark-out .8s ease-out forwards;pointer-events:none}
@keyframes spark-out{to{transform:rotate(var(--a)) translateY(-120px) scale(.2);opacity:0}}
@media (prefers-reduced-motion:reduce){.pf-av.celebrate{animation:none}.spark{display:none}}

.pf-tabs button{display:inline-flex;align-items:center;gap:8px;padding-left:8px}
.pt-ic{display:inline-grid;place-items:center;width:26px;height:26px;line-height:0}
.pt-ic i{display:block;width:22px;height:22px;border-radius:50%;box-shadow:0 0 0 2px var(--line-strong)}
.pt-ic svg.avatar{width:26px;height:26px;border-radius:50%}
.pf-tabs button.on .pt-ic i{box-shadow:0 0 0 2px rgba(0,0,0,.35)}