:root{
--bg:#070a12;--bg2:#0a0e19;--panel:rgba(15,20,35,.78);--panel2:rgba(20,27,47,.74);
--text:#f7f9ff;--muted:#93a0b8;--line:rgba(255,255,255,.085);--line2:rgba(135,111,255,.25);
--accent:#7c5cff;--accent2:#2fd5ff;--ok:#3bdaa0;--bad:#ff647a;--shadow:0 24px 80px rgba(0,0,0,.38);
--radius:26px
}
*{box-sizing:border-box}
html{min-height:100%;background:#070a12}
body{
margin:0;min-height:100vh;color:var(--text);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
background:
radial-gradient(circle at 10% 0%,rgba(124,92,255,.17),transparent 30%),
radial-gradient(circle at 92% 4%,rgba(47,213,255,.10),transparent 28%),
linear-gradient(180deg,#090d18 0%,#070a12 58%,#070a12 100%);
background-attachment:fixed;
padding:max(22px,env(safe-area-inset-top)) 18px max(34px,env(safe-area-inset-bottom));
overflow-x:hidden
}
body:before{
content:"";position:fixed;inset:0;pointer-events:none;z-index:-2;
background-image:linear-gradient(rgba(255,255,255,.015) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.012) 1px,transparent 1px);
background-size:44px 44px;mask-image:linear-gradient(to bottom,black,transparent 80%)
}
.ambient{position:fixed;border-radius:50%;filter:blur(80px);pointer-events:none;z-index:-1;opacity:.55}
.ambient-a{width:420px;height:420px;left:-180px;top:22%;background:rgba(92,55,255,.22)}
.ambient-b{width:360px;height:360px;right:-120px;top:5%;background:rgba(0,180,255,.14)}
.ambient-c{width:520px;height:520px;left:32%;bottom:-300px;background:rgba(79,42,204,.12)}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.app-shell{width:min(1180px,100%);margin:auto}
.app-header{
display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:18px;
padding:8px 4px 14px;border-bottom:1px solid rgba(255,255,255,.04)
}
.brand{display:flex;align-items:center;gap:14px}
.brand-mark{
width:58px;height:58px;border-radius:19px;display:grid;place-items:center;position:relative;overflow:hidden;
background:linear-gradient(145deg,rgba(124,92,255,.25),rgba(47,213,255,.08));
border:1px solid rgba(139,119,255,.28);box-shadow:0 14px 42px rgba(73,53,182,.28),inset 0 1px 0 rgba(255,255,255,.09)
}
.brand-mark svg{width:46px;height:46px}
.mark-orbit{fill:none;stroke:url(#none);stroke:#7e65ff;stroke-width:4;opacity:.9}
.mark-bolt{fill:white;filter:drop-shadow(0 3px 8px rgba(255,255,255,.2))}
.brand-copy h1{margin:0;font-size:27px;letter-spacing:-.045em;font-weight:900}
.brand-line{display:flex;align-items:center;gap:8px}
.brand-pill{
font-size:10px;text-transform:uppercase;letter-spacing:.14em;padding:5px 8px;border-radius:999px;
background:rgba(124,92,255,.11);color:#c6bbff;border:1px solid rgba(124,92,255,.22)
}
.brand-copy p{margin:4px 0 0;color:var(--muted);font-size:12px;letter-spacing:.02em}
.header-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.version,.sync-badge{
border:1px solid var(--line);background:rgba(255,255,255,.035);color:var(--muted);padding:8px 11px;border-radius:999px;font-size:11px;
backdrop-filter:blur(16px)
}
.sync-badge{color:#b9f8dc;border-color:rgba(59,218,160,.18)}
.sync-badge i{display:inline-block;width:7px;height:7px;border-radius:50%;background:#3bdaa0;box-shadow:0 0 14px rgba(59,218,160,.8);margin-right:6px}
.tabs{
display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:7px;border:1px solid rgba(255,255,255,.065);
background:rgba(12,16,28,.62);border-radius:20px;backdrop-filter:blur(20px);margin-bottom:18px;
box-shadow:0 12px 34px rgba(0,0,0,.18)
}
.tab{
border:0;background:transparent;color:#a5b0c4;font-weight:800;padding:12px 8px;border-radius:14px;transition:.18s;
display:flex;align-items:center;justify-content:center;gap:8px
}
.nav-dot{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.16)}
.tab:hover{background:rgba(255,255,255,.035);color:#e9edff}
.tab.active{background:linear-gradient(135deg,#7b59ff,#7055e9);color:white;box-shadow:0 10px 28px rgba(111,78,239,.28)}
.tab.active .nav-dot{background:#fff;box-shadow:0 0 12px rgba(255,255,255,.8)}
.view{display:none}.view.active{display:block}
.panel{
border:1px solid rgba(255,255,255,.075);background:linear-gradient(180deg,rgba(18,24,41,.82),rgba(12,17,30,.76));
border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(20px)
}
.pad{padding:20px}
.hero{
position:relative;overflow:hidden;padding:28px;min-height:290px;
background:
linear-gradient(130deg,rgba(32,27,74,.92),rgba(13,19,34,.84) 52%,rgba(7,22,36,.78)),
linear-gradient(180deg,rgba(255,255,255,.02),transparent)
}
.hero:after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(120deg,rgba(255,255,255,.025),transparent 30%)}
.hero-glow{position:absolute;width:420px;height:420px;right:-130px;top:-180px;border-radius:50%;background:radial-gradient(circle,rgba(104,79,255,.33),rgba(47,213,255,.06) 38%,transparent 68%)}
.hero-content{position:relative;z-index:2;max-width:760px}
.hero h2{margin:9px 0 10px;font-size:clamp(34px,5vw,54px);line-height:1.02;letter-spacing:-.055em;max-width:760px}
.hero p{color:#a7b3c8;font-size:16px;line-height:1.55;max-width:690px}
.hero-orb{position:absolute;right:48px;top:50%;transform:translateY(-50%);width:190px;height:190px;display:grid;place-items:center;opacity:.9}
.orb-ring{position:absolute;border-radius:50%;border:1px solid rgba(126,101,255,.28)}
.ring-1{inset:0}.ring-2{inset:24px;border-color:rgba(47,213,255,.18)}
.orb-core{
width:82px;height:82px;border-radius:28px;display:grid;place-items:center;font-size:34px;font-weight:950;
background:linear-gradient(145deg,#7d5cff,#47c9ff);box-shadow:0 18px 50px rgba(92,68,220,.34)
}
.eyebrow{text-transform:uppercase;letter-spacing:.15em;font-size:10px;font-weight:900;color:#66ddff}
h3{margin:5px 0 14px;font-size:19px;letter-spacing:-.02em}
.muted{color:var(--muted);line-height:1.55}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 20px}
.chip{
padding:8px 10px;border-radius:999px;font-size:11px;font-weight:800;color:#e8e4ff;
border:1px solid rgba(124,92,255,.30);background:rgba(124,92,255,.11);backdrop-filter:blur(8px)
}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:14px 0}
.metric{
padding:17px;text-align:left;color:var(--text);width:100%;position:relative;overflow:hidden;transition:.2s;
background:linear-gradient(180deg,rgba(18,24,41,.76),rgba(12,17,30,.74))
}
.metric:after{content:"";position:absolute;inset:auto -40px -40px auto;width:100px;height:100px;border-radius:50%;background:rgba(124,92,255,.06)}
.metric-icon{
width:34px;height:34px;border-radius:11px;display:grid;place-items:center;margin-bottom:14px;font-weight:900;
background:rgba(124,92,255,.10);border:1px solid rgba(124,92,255,.16);color:#c8bdff
}
.metric span{color:var(--muted);font-size:12px}
.metric strong{display:block;font-size:30px;margin:4px 0 3px;letter-spacing:-.03em}
.metric small{color:#63d8fa;font-size:11px}
.metric-btn:hover{transform:translateY(-3px);border-color:rgba(124,92,255,.34);box-shadow:0 20px 50px rgba(0,0,0,.28)}
.dashboard-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:14px}
.section-head{display:flex;justify-content:space-between;align-items:center;gap:10px}
.soft-label{font-size:11px;color:var(--muted);padding:7px 9px;border:1px solid var(--line);border-radius:999px}
.boxes-grid{display:grid;grid-template-columns:repeat(7,minmax(82px,1fr));gap:8px}
.box-tile{
min-height:116px;padding:14px 11px;border-radius:18px;background:rgba(255,255,255,.028);border:1px solid rgba(255,255,255,.07);color:var(--text);text-align:left;
transition:.18s;position:relative;overflow:hidden
}
.box-tile:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(#7559ff,#2fd5ff);opacity:.35}
.box-tile:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.30);background:rgba(124,92,255,.055)}
.box-tile.due{background:linear-gradient(180deg,rgba(124,92,255,.11),rgba(255,255,255,.025));border-color:rgba(124,92,255,.24)}
.box-number{font-size:25px;font-weight:950}
.box-frequency{color:var(--muted);font-size:10px;line-height:1.3}
.box-count{font-size:12px;margin-top:16px;color:#dfe6f5}
.quick-panel{display:flex;flex-direction:column;align-items:flex-start}
.quick-panel .btn{width:100%;margin-top:10px}
.btn{
border:0;border-radius:14px;padding:12px 15px;font-weight:850;color:var(--text);transition:.18s;
display:inline-flex;align-items:center;justify-content:center;gap:10px
}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:linear-gradient(135deg,#7c5cff,#6e57e9 62%,#5d70e8);box-shadow:0 12px 26px rgba(107,79,234,.24)}
.btn.ghost{background:rgba(255,255,255,.045);border:1px solid var(--line)}
.btn.danger{background:rgba(255,100,122,.10);color:#ff9baa;border:1px solid rgba(255,100,122,.18)}
.btn-arrow{font-size:16px;opacity:.9}
.mini-btn{width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.045);color:var(--text);font-weight:900}
.library-layout{display:grid;grid-template-columns:285px 1fr;gap:14px}
.library-sidebar{position:sticky;top:16px;align-self:start}
.library-main{min-height:560px}
.library-topbar{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.tree{display:grid;gap:6px;margin-top:7px}
.tree-item{display:flex;align-items:center;justify-content:space-between;gap:8px;border:1px solid transparent;border-radius:13px;padding:10px;background:rgba(255,255,255,.025);color:var(--text);width:100%;text-align:left}
.tree-item.active{border-color:rgba(124,92,255,.32);background:rgba(124,92,255,.09)}
.tree-children{padding-left:14px;display:grid;gap:5px}
.chapter-item{font-size:13px;color:var(--muted);background:transparent;border:0;text-align:left;padding:8px;border-radius:10px}
.chapter-item.active{color:var(--text);background:rgba(255,255,255,.045)}
.folder-actions{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.selection-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;padding:12px;border:1px solid rgba(124,92,255,.30);border-radius:16px;background:rgba(124,92,255,.075);margin-bottom:14px}
.selection-actions{display:flex;gap:7px;flex-wrap:wrap}
.cards-list{display:grid;gap:9px}
.card-row{display:grid;grid-template-columns:auto auto 1fr auto;gap:12px;align-items:start;padding:13px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.025);transition:.18s}
.card-row:hover{border-color:rgba(124,92,255,.24);background:rgba(255,255,255,.035)}
.card-row.selected{border-color:rgba(124,92,255,.45);background:rgba(124,92,255,.07)}
.select-check{width:20px;height:20px;margin-top:9px}
.card-box{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:rgba(124,92,255,.13);font-weight:900;color:#d0c7ff}
.card-copy h4{margin:0 0 4px}
.card-copy p{margin:0;color:var(--muted);font-size:12px}
.card-actions{display:flex;gap:6px}
.icon-btn{border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);border-radius:10px;padding:8px 9px}
.form-stack{display:grid;gap:12px}
label{display:grid;gap:7px;color:var(--muted);font-size:13px;font-weight:800}
input,textarea,select{width:100%;border:1px solid var(--line);background:rgba(255,255,255,.045);color:var(--text);border-radius:14px;padding:12px 13px;outline:none}
input:focus,textarea:focus,select:focus{border-color:rgba(124,92,255,.5);box-shadow:0 0 0 3px rgba(124,92,255,.08)}
textarea{min-height:110px;resize:vertical}
option{color:#111}
.combo-row{display:grid;grid-template-columns:1fr auto;gap:8px}
.review-root{max-width:820px;margin:auto}
.review-top{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;margin-bottom:10px}
.progress{height:9px;border-radius:999px;background:rgba(255,255,255,.055);overflow:hidden;margin-bottom:14px}
.progress span{display:block;height:100%;background:linear-gradient(90deg,#7c5cff,#2fd5ff)}
.flashcard{min-height:410px;padding:28px;border-radius:30px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(20,27,47,.78),rgba(12,17,30,.78));box-shadow:var(--shadow)}
.flash-meta{display:flex;gap:7px;flex-wrap:wrap}
.flash-meta span{font-size:12px;color:var(--muted);padding:7px 9px;border-radius:999px;border:1px solid var(--line)}
.flash-question{font-size:clamp(24px,4vw,36px);line-height:1.32;white-space:pre-wrap;margin:36px 0}
.flash-answer{white-space:pre-wrap;line-height:1.6;border-top:1px solid var(--line);padding-top:22px}
.review-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}
.review-actions .wide{grid-column:1/-1}
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.modal{position:fixed;inset:0;background:rgba(3,5,10,.82);backdrop-filter:blur(16px);display:grid;place-items:center;padding:18px;z-index:40}
.modal-card{width:min(500px,100%);padding:22px;max-height:88vh;overflow:auto}
.large-modal{width:min(760px,100%)}
.hidden{display:none!important}
.legend{display:flex;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-bottom:12px}
.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:7px}
.day{aspect-ratio:1;border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:12px;background:rgba(255,255,255,.025)}
.day .emoji{font-size:18px}
.toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%) translateY(18px);opacity:0;background:#f7f9ff;color:#0b1020;padding:11px 15px;border-radius:999px;font-weight:850;box-shadow:var(--shadow);transition:.2s;z-index:50}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:980px){.hero-orb{opacity:.28;right:-10px}.hero-content{max-width:78%}.dashboard-grid,.library-layout{grid-template-columns:1fr}.library-sidebar{position:static}.boxes-grid{grid-template-columns:repeat(4,1fr)}}
@media(max-width:620px){
body{padding-left:12px;padding-right:12px}.app-header{align-items:flex-start}.brand-mark{width:50px;height:50px}.brand-copy h1{font-size:23px}.version{display:none}
.tabs{gap:4px}.tab{font-size:11px;padding:10px 3px}.nav-dot{display:none}.hero{padding:22px;min-height:auto}.hero-content{max-width:100%}.hero-orb{display:none}
.metrics{grid-template-columns:1fr 1fr;gap:8px}.boxes-grid{grid-template-columns:repeat(2,1fr)}.settings-grid{grid-template-columns:1fr}.card-row{grid-template-columns:auto auto 1fr}.card-actions{grid-column:3}.selection-actions{width:100%}.selection-actions .btn{flex:1}.calendar-grid{gap:4px}
}

/* v1.3 FORMULA — scientific block editor */
.formula-modal{width:min(860px,100%)!important}
.card-meta-grid{display:grid;grid-template-columns:1fr 1fr 150px;gap:10px;margin-bottom:16px}
.face-tabs{display:grid;grid-template-columns:1fr 1fr;gap:7px;padding:6px;background:rgba(255,255,255,.035);border:1px solid var(--line);border-radius:16px;margin-bottom:12px}
.face-tab{border:0;border-radius:11px;background:transparent;color:var(--muted);padding:10px;font-weight:850}
.face-tab.active{background:rgba(124,92,255,.16);color:var(--text);border:1px solid rgba(124,92,255,.22)}
.face-editor{display:none}.face-editor.active{display:block}
.block-toolbar{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:12px}
.block-add{border:1px solid var(--line);background:rgba(255,255,255,.035);color:var(--text);border-radius:14px;padding:11px 8px;font-weight:900}
.block-add span{display:block;color:var(--muted);font-size:10px;margin-top:3px;font-weight:700}
.block-add:hover{border-color:rgba(124,92,255,.35);background:rgba(124,92,255,.06)}
.blocks-editor{display:grid;gap:10px}
.editor-block{border:1px solid var(--line);background:rgba(255,255,255,.025);border-radius:17px;padding:12px}
.block-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:9px}
.block-type{font-size:11px;color:#c9c1ff;font-weight:850;text-transform:uppercase;letter-spacing:.07em}
.block-controls{display:flex;gap:5px}
.block-controls button{width:30px;height:30px;border-radius:9px;border:1px solid var(--line);background:rgba(255,255,255,.035);color:var(--muted)}
.block-controls button:disabled{opacity:.25}
.block-text{min-height:90px!important}
.empty-blocks{padding:28px;text-align:center;border:1px dashed var(--line);border-radius:16px;color:var(--muted)}
.empty-blocks strong,.empty-blocks span{display:block}.empty-blocks strong{color:var(--text);margin-bottom:4px}
.formula-shell{border:1px solid rgba(124,92,255,.18);border-radius:14px;background:rgba(4,7,14,.46);padding:10px}
math-field.visual-math{
display:block;width:100%;min-height:72px;background:transparent;color:var(--text);border:0;font-size:25px;
--caret-color:#7c5cff;--selection-background-color:rgba(124,92,255,.22);--contains-highlight-background-color:rgba(47,213,255,.10)
}
.formula-hint{color:var(--muted);font-size:10px;margin-top:6px}
.draw-shell{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#0a0e18}
.draw-canvas{display:block;width:100%;height:230px;touch-action:none;background:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:24px 24px}
.draw-actions{padding:8px;display:flex;justify-content:flex-end}
.mini-action,.image-picker{border:1px solid var(--line);background:rgba(255,255,255,.045);color:var(--text);border-radius:10px;padding:8px 10px;font-size:12px}
.image-picker{display:inline-flex;cursor:pointer}.image-picker input{display:none}
.image-shell{display:grid;gap:9px}
.block-image,.content-image{display:block;max-width:100%;max-height:520px;object-fit:contain;border-radius:14px;border:1px solid var(--line);margin:8px auto}
.image-placeholder{display:grid;place-items:center;min-height:120px;border:1px dashed var(--line);border-radius:14px;color:var(--muted)}
.editor-footer{display:flex;gap:9px;flex-wrap:wrap;margin-top:14px}
.editor-footer .primary{flex:1}
.content-text{white-space:pre-wrap;margin:8px 0}
math-field.display-math{display:block;width:100%;background:transparent;color:var(--text);border:0;font-size:1.08em;margin:14px 0;pointer-events:none}
.flash-question math-field.display-math{font-size:30px}
.flash-question .content-text{font-size:inherit}
@media(max-width:720px){
.card-meta-grid{grid-template-columns:1fr}
.block-toolbar{grid-template-columns:repeat(4,1fr)}
.block-add{font-size:13px;padding:10px 4px}
.formula-modal{padding:16px!important}
.draw-canvas{height:200px}
}

/* v1.3.1 FLIP — tactile 3D review card */
.flip-stage{
  perspective:1400px;
  width:100%;
  margin:0 auto 16px;
}
.flip-card{
  display:block;
  width:100%;
  min-height:430px;
  padding:0;
  border:0;
  background:transparent;
  color:inherit;
  text-align:left;
  cursor:pointer;
  -webkit-tap-highlight-color:transparent;
}
.flip-card-inner{
  position:relative;
  width:100%;
  min-height:430px;
  transform-style:preserve-3d;
  transition:transform .56s cubic-bezier(.22,.72,.2,1);
}
.flip-card.is-flipped .flip-card-inner{transform:rotateY(180deg)}
.flip-face{
  position:absolute;
  inset:0;
  min-height:430px;
  padding:28px;
  border-radius:30px;
  border:1px solid rgba(255,255,255,.09);
  backface-visibility:hidden;
  -webkit-backface-visibility:hidden;
  overflow:auto;
  box-shadow:
    0 28px 90px rgba(0,0,0,.42),
    0 1px 0 rgba(255,255,255,.04) inset;
}
.flip-front{
  background:
    radial-gradient(circle at 88% 10%,rgba(124,92,255,.16),transparent 28%),
    linear-gradient(180deg,rgba(20,27,47,.96),rgba(11,16,29,.96));
}
.flip-back{
  transform:rotateY(180deg);
  background:
    radial-gradient(circle at 10% 90%,rgba(47,213,255,.11),transparent 30%),
    linear-gradient(180deg,rgba(17,29,43,.97),rgba(10,17,27,.97));
}
.flip-hint{
  position:absolute;
  top:24px;
  right:26px;
  color:var(--muted);
  font-size:11px;
  font-weight:750;
}
.flip-corner{
  position:absolute;
  right:22px;
  bottom:18px;
  width:38px;
  height:38px;
  border-radius:50%;
  display:grid;
  place-items:center;
  color:#cfc7ff;
  border:1px solid rgba(124,92,255,.2);
  background:rgba(124,92,255,.08);
  font-size:18px;
}
.flip-front .flash-question,
.flip-back .flash-answer{
  min-height:310px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  border-top:0;
  padding-top:18px;
}
.flip-back .flash-answer{font-size:20px}
.review-actions{transition:opacity .2s ease,transform .2s ease}
@media(max-width:620px){
  .flip-card,.flip-card-inner,.flip-face{min-height:380px}
  .flip-face{padding:20px}
  .flip-hint{top:18px;right:18px;font-size:10px}
  .flip-front .flash-question,.flip-back .flash-answer{min-height:280px}
}
@media(prefers-reduced-motion:reduce){
  .flip-card-inner{transition:none}
}

/* v1.3.2 — MathLive keyboard clearance */
.formula-modal{
  scroll-padding-bottom:360px;
  transition:padding-bottom .2s ease;
}
.formula-modal.math-keyboard-open{
  padding-bottom:360px!important;
}
body.math-keyboard-open{
  overscroll-behavior-y:contain;
}
.formula-shell{
  position:relative;
  scroll-margin-top:90px;
  scroll-margin-bottom:360px;
}
math-field.visual-math{
  scroll-margin-top:90px;
  scroll-margin-bottom:360px;
}
@media(max-width:720px){
  .formula-modal.math-keyboard-open{
    padding-bottom:430px!important;
  }
  .formula-modal{
    scroll-padding-bottom:430px;
  }
  .formula-shell,
  math-field.visual-math{
    scroll-margin-bottom:430px;
  }
}

/* v1.3.3 — session/auth gate, fixes infinite reload loop */
.auth-gate{
  position:fixed;inset:0;z-index:100;
  display:grid;place-items:center;
  padding:20px;
  background:
    radial-gradient(circle at 18% 10%,rgba(124,92,255,.22),transparent 32%),
    radial-gradient(circle at 85% 15%,rgba(47,213,255,.12),transparent 28%),
    rgba(5,8,15,.92);
  backdrop-filter:blur(18px);
}
.auth-card{width:min(470px,100%);padding:24px}
.auth-brand{display:flex;align-items:center;gap:14px;margin-bottom:8px}
.auth-logo{
  width:54px;height:54px;border-radius:18px;display:grid;place-items:center;
  background:linear-gradient(145deg,#7c5cff,#2fd5ff);font-size:24px;font-weight:950;
  box-shadow:0 16px 40px rgba(93,70,215,.30)
}
.auth-card h2{margin:4px 0;font-size:30px;letter-spacing:-.04em}
.auth-tabs{
  display:grid;grid-template-columns:1fr 1fr;gap:7px;
  padding:6px;border:1px solid var(--line);border-radius:15px;
  background:rgba(255,255,255,.03);margin:18px 0 14px
}
.auth-tab{
  border:0;border-radius:10px;padding:10px;
  color:var(--muted);background:transparent;font-weight:850
}
.auth-tab.active{background:rgba(124,92,255,.16);color:var(--text)}
.auth-message{min-height:20px;margin:12px 0 0;color:#ff9baa;font-size:13px}

/* v1.4.0 — MASTERY: one universal session engine + physical swipe card */
.review-session-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin:0 2px 10px;color:var(--muted);font-size:12px
}
.review-session-head>div{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.review-session-head strong{color:var(--text);font-size:12px}
.session-source{
  padding:6px 9px;border-radius:999px;border:1px solid rgba(124,92,255,.22);
  background:rgba(124,92,255,.08);color:#cfc7ff;font-weight:850
}
.retry-banner{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin:-2px 0 12px;padding:10px 13px;border-radius:14px;
  border:1px solid rgba(47,213,255,.14);background:rgba(47,213,255,.055)
}
.retry-banner span{font-size:10px;text-transform:uppercase;letter-spacing:.12em;color:#70defa;font-weight:900}
.retry-banner strong{font-size:12px}
.flip-stage{
  perspective:1500px;
  transform:translateX(var(--hold-shift,0px));
  transition:transform .18s ease;
  user-select:none;
  -webkit-user-select:none;
}
.flip-card{
  touch-action:pan-y;
  outline:none;
  border-radius:30px;
}
.flip-card:focus-visible{box-shadow:0 0 0 3px rgba(47,213,255,.28)}
.flip-card-inner{
  will-change:transform;
  transform:rotateY(0deg);
  transition:transform .52s cubic-bezier(.2,.78,.18,1)
}
.flip-card.is-flipped .flip-card-inner{transform:rotateY(180deg)}
.flip-face{
  box-shadow:0 30px 95px rgba(0,0,0,.44),0 1px 0 rgba(255,255,255,.05) inset;
  transition:box-shadow .2s ease,border-color .2s ease
}
.flip-card:hover .flip-face{border-color:rgba(124,92,255,.18)}
.review-actions{min-height:50px}

.session-summary{
  max-width:820px;margin:0 auto;padding:28px;
  text-align:center;overflow:hidden;position:relative
}
.session-summary:before{
  content:"";position:absolute;width:420px;height:420px;border-radius:50%;
  right:-220px;top:-240px;background:radial-gradient(circle,rgba(124,92,255,.18),transparent 68%);pointer-events:none
}
.summary-kicker{
  color:#75ddfa;text-transform:uppercase;letter-spacing:.13em;font-weight:900;font-size:10px
}
.session-summary h2{font-size:clamp(28px,5vw,44px);letter-spacing:-.045em;margin:10px 0 7px}
.summary-lead{color:var(--muted);margin:0 auto 22px;max-width:560px;line-height:1.55}
.summary-layout{
  display:grid;grid-template-columns:220px minmax(0,1fr);align-items:center;gap:28px;
  max-width:640px;margin:8px auto 24px;text-align:left
}
.session-donut{
  --session-success:50%;
  width:190px;aspect-ratio:1;border-radius:50%;margin:auto;
  display:grid;place-items:center;position:relative;
  background:conic-gradient(var(--ok) 0 var(--session-success),var(--bad) var(--session-success) 100%);
  box-shadow:0 20px 55px rgba(0,0,0,.28)
}
.session-donut:before{
  content:"";position:absolute;inset:19px;border-radius:50%;
  background:linear-gradient(180deg,#111827,#0b101c);border:1px solid rgba(255,255,255,.06)
}
.session-donut>div{position:relative;z-index:2;text-align:center}
.session-donut strong{display:block;font-size:34px;letter-spacing:-.04em}
.session-donut span{color:var(--muted);font-size:11px}
.summary-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.summary-stats>div{
  padding:15px 12px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.025)
}
.summary-stats span{display:block;color:var(--muted);font-size:10px;margin-bottom:5px}
.summary-stats strong{font-size:24px}
.summary-stats .stat-ok strong{color:#6ee7b7}.summary-stats .stat-bad strong{color:#ff91a0}
.summary-actions{display:flex;justify-content:center;gap:9px;flex-wrap:wrap}
.summary-actions .btn{min-width:190px}
.mastery-badge{
  width:74px;height:74px;border-radius:26px;display:grid;place-items:center;margin:0 auto 14px;
  font-size:32px;font-weight:950;color:#07140f;background:linear-gradient(145deg,#55e6aa,#7df3c1);
  box-shadow:0 18px 55px rgba(59,218,160,.22)
}
.mastery .session-donut{margin:20px auto 24px;background:conic-gradient(var(--ok) 0 100%)}
.mastery-finish{min-width:220px}
.empty-session{text-align:center;max-width:620px;margin:auto;padding:38px}

@media(max-width:680px){
  .summary-layout{grid-template-columns:1fr;gap:18px}
  .session-donut{width:165px}
  .summary-stats{width:100%}
  .summary-actions{display:grid;grid-template-columns:1fr;width:100%}
  .summary-actions .btn{width:100%}
  .session-summary{padding:22px 16px}
  .review-session-head{font-size:11px}
  .flip-hint{max-width:150px;text-align:right}
}
@media(prefers-reduced-motion:reduce){
  .flip-stage,.flip-card-inner,.flip-face,.metric,.btn,.tab{transition:none!important}
}

/* =========================================================
   v1.4.1 — ADAPTIVE
   One fixed application viewport, no nested scrollbars.
   ========================================================= */
html,body{width:100%;height:100%;min-height:0!important;overflow:hidden!important;overscroll-behavior:none}
body{height:100dvh;min-height:100dvh!important;padding:clamp(8px,1.7vmin,18px)!important}
.app-shell{width:min(1180px,100%);height:100%;min-height:0;margin:0 auto;display:grid;grid-template-rows:auto auto minmax(0,1fr);gap:clamp(6px,1.2vmin,12px);overflow:hidden}
.app-header,.tabs{margin:0!important;min-height:0}
.app-header{padding:clamp(3px,.8vmin,8px) 4px clamp(5px,1vmin,10px)}
.brand-mark{width:clamp(42px,6vmin,58px);height:clamp(42px,6vmin,58px);border-radius:clamp(14px,2vmin,19px)}
.brand-mark svg{width:78%;height:78%}.brand-copy h1{font-size:clamp(20px,3vmin,27px)}.brand-copy p{font-size:clamp(9px,1.35vmin,12px)}
.tabs{padding:clamp(4px,.8vmin,7px);border-radius:clamp(14px,2vmin,20px)}
.tab{padding:clamp(7px,1.35vmin,12px) 6px;font-size:clamp(10px,1.5vmin,14px)}
.view{min-height:0!important;height:100%;overflow:hidden!important}.view.active{display:block}

/* dashboard */
#dashboard.active{display:grid;grid-template-rows:minmax(0,1.3fr) auto minmax(0,1fr);gap:clamp(6px,1.1vmin,12px)}
.hero{min-height:0!important;height:100%;padding:clamp(14px,2.7vmin,28px)}
.hero-content{height:100%;display:flex;flex-direction:column;align-items:flex-start;justify-content:center}
.hero h2{font-size:clamp(24px,5.5vmin,54px);margin:clamp(4px,.8vmin,9px) 0 clamp(4px,.9vmin,10px)}
.hero p{font-size:clamp(11px,1.75vmin,16px);line-height:1.35;margin:0}
.chips{margin:clamp(6px,1.4vmin,18px) 0 clamp(7px,1.4vmin,20px);gap:5px}.chip{padding:clamp(5px,.9vmin,8px) clamp(7px,1vmin,10px);font-size:clamp(9px,1.2vmin,11px)}
.hero-orb{width:clamp(100px,18vmin,190px);height:clamp(100px,18vmin,190px);right:clamp(12px,4vw,48px)}
.orb-core{width:clamp(54px,8vmin,82px);height:clamp(54px,8vmin,82px);border-radius:clamp(18px,3vmin,28px);font-size:clamp(24px,4vmin,34px)}
.metrics{margin:0!important;gap:clamp(5px,1vmin,12px)}.metric{padding:clamp(8px,1.5vmin,17px)}
.metric-icon{width:clamp(26px,3.5vmin,34px);height:clamp(26px,3.5vmin,34px);margin-bottom:clamp(4px,.8vmin,14px)}
.metric strong{font-size:clamp(20px,3.3vmin,30px);margin:2px 0}.metric small{font-size:clamp(8px,1.05vmin,11px)}
.dashboard-grid{min-height:0;height:100%;gap:clamp(6px,1.1vmin,14px)}.dashboard-grid>.panel{min-height:0;height:100%;overflow:hidden!important}
.dashboard-grid .pad{padding:clamp(9px,1.7vmin,20px)}.dashboard-grid h3{font-size:clamp(14px,2vmin,19px);margin:3px 0 clamp(5px,.9vmin,14px)}
.boxes-grid{height:calc(100% - clamp(34px,5vmin,56px));min-height:0;gap:clamp(4px,.75vmin,8px)}
.box-tile{min-height:0!important;height:100%;padding:clamp(7px,1.1vmin,14px) clamp(6px,.9vmin,11px);border-radius:clamp(12px,1.8vmin,18px)}
.box-number{font-size:clamp(18px,2.8vmin,25px)}.box-frequency{font-size:clamp(8px,1vmin,10px)}.box-count{margin-top:clamp(5px,1.2vmin,16px);font-size:clamp(9px,1.1vmin,12px)}
.quick-panel{justify-content:center}.quick-panel p{margin:0 0 4px}.quick-panel .btn{margin-top:clamp(5px,.9vmin,10px);padding:clamp(8px,1.2vmin,12px) 10px;font-size:clamp(10px,1.35vmin,14px)}

/* review */
#review.active{display:block;height:100%;min-height:0}
.review-root{width:min(920px,100%);max-width:none!important;height:100%;min-height:0;margin:0 auto;display:grid;grid-template-rows:auto auto auto minmax(0,1fr) auto;gap:clamp(5px,.9vmin,10px);overflow:hidden!important}
.review-session-head,.retry-banner,.progress,.review-actions{margin:0!important;min-height:0}.progress{height:clamp(6px,.9vmin,9px)}
.flip-stage{min-height:0;height:100%;width:100%;perspective:1500px;touch-action:none!important;overflow:visible!important}
.flip-card,.flip-card-inner,.flip-face{width:100%;height:100%;min-height:0!important}
.flip-card{touch-action:none!important;overscroll-behavior:none}
.flip-face{padding:clamp(14px,2.4vmin,28px);overflow:hidden!important;display:grid;grid-template-rows:auto minmax(0,1fr) auto}
.flip-hint{font-size:clamp(8px,1.1vmin,11px);top:clamp(12px,2vmin,24px);right:clamp(12px,2vmin,26px)}
.flip-corner{width:clamp(30px,4vmin,38px);height:clamp(30px,4vmin,38px);right:clamp(12px,2vmin,22px);bottom:clamp(10px,1.8vmin,18px)}
.flip-front .flash-question,.flip-back .flash-answer{min-height:0!important;height:100%;margin:0!important;padding:clamp(8px,1.4vmin,18px) 0!important;overflow:hidden!important;display:flex;flex-direction:column;justify-content:center;transform:scale(var(--face-scale,1));transform-origin:center center;width:var(--face-width,100%);max-width:none;align-self:center;justify-self:center}
.flash-question{font-size:clamp(18px,3.8vmin,36px)!important;line-height:1.22}.flip-back .flash-answer{font-size:clamp(15px,2.6vmin,22px)!important;line-height:1.35}
.flip-face .content-image{max-width:100%;max-height:min(38dvh,55%);object-fit:contain;margin:clamp(3px,.7vmin,8px) auto}
.flip-face math-field.display-math{font-size:clamp(18px,3.5vmin,30px)!important;margin:clamp(5px,1vmin,14px) 0}.content-condensed .content-image{max-height:32%}
.review-actions{height:clamp(42px,6.2vmin,54px);display:grid;align-items:stretch}.review-actions .btn{height:100%;padding:clamp(8px,1.2vmin,12px)}
.retry-banner{padding:clamp(6px,1vmin,10px) clamp(9px,1.2vmin,13px)}.review-session-head{font-size:clamp(9px,1.2vmin,12px)}

/* summary */
.review-root:has(.session-summary){display:flex;align-items:center;justify-content:center}
.session-summary{width:min(820px,100%);max-height:100%;margin:0!important;padding:clamp(14px,2.6vmin,28px);overflow:hidden!important}
.session-summary h2{font-size:clamp(22px,5vmin,44px);margin:clamp(5px,.9vmin,10px) 0}.summary-lead{margin:0 auto clamp(10px,2vmin,22px);font-size:clamp(10px,1.5vmin,15px)}
.summary-layout{grid-template-columns:minmax(110px,190px) minmax(0,1fr);gap:clamp(10px,2.5vmin,28px);margin:4px auto clamp(8px,1.8vmin,24px)}
.session-donut{width:min(23vmin,190px)}.session-donut:before{inset:clamp(12px,2.3vmin,19px)}.session-donut strong{font-size:clamp(24px,4.3vmin,34px)}
.summary-stats>div{padding:clamp(8px,1.5vmin,15px) clamp(7px,1.2vmin,12px)}.summary-stats strong{font-size:clamp(18px,3.2vmin,24px)}.summary-actions .btn{min-width:0}

/* library */
#library.active{height:100%;min-height:0}
.library-layout{height:100%;min-height:0;grid-template-columns:minmax(190px,285px) minmax(0,1fr);gap:clamp(6px,1.1vmin,14px)}
.library-sidebar,.library-main{position:static!important;min-height:0!important;height:100%;overflow:hidden!important;padding:clamp(10px,1.7vmin,20px)}
.library-sidebar{display:flex;flex-direction:column}.library-main{display:grid;grid-template-rows:auto auto auto minmax(0,1fr);gap:clamp(5px,.9vmin,10px)}
#subjectTree{min-height:0;overflow:hidden!important}.tree{gap:clamp(2px,.6vmin,6px);margin-top:4px}
.tree-item{padding:clamp(6px,1vmin,10px);font-size:clamp(10px,1.25vmin,13px)}.tree-children{gap:2px;padding-left:10px}
.chapter-item{padding:clamp(4px,.8vmin,8px);font-size:clamp(9px,1.15vmin,13px)}
.tree-pager,.list-pager,.block-page-head{display:flex;align-items:center;justify-content:center;gap:8px;color:var(--muted);font-size:11px}
.tree-pager button,.list-pager button,.block-page-nav{width:32px;height:28px;border-radius:9px;border:1px solid var(--line);color:var(--text);background:rgba(255,255,255,.04)}
.tree-pager button:disabled,.list-pager button:disabled,.block-page-nav:disabled{opacity:.25}
.library-topbar,.selection-bar,.folder-actions{margin:0!important}
#folderContent{min-height:0;height:100%;display:grid;grid-template-rows:minmax(0,1fr) auto;gap:6px;overflow:hidden!important}
.fixed-list{min-height:0;height:100%;overflow:hidden!important}
.cards-list{height:100%;display:grid;grid-template-rows:repeat(var(--visible-card-rows,6),minmax(0,1fr));gap:clamp(4px,.7vmin,9px);overflow:hidden!important}
.card-row{min-height:0;height:100%;overflow:hidden!important;padding:clamp(7px,1.1vmin,13px);align-items:center}
.card-copy{min-width:0;overflow:hidden}.card-copy h4{font-size:clamp(10px,1.4vmin,15px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.card-copy p{font-size:clamp(8px,1.05vmin,12px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-box{width:clamp(30px,4vmin,38px);height:clamp(30px,4vmin,38px)}.list-pager{height:30px}

/* modals */
.modal{height:100dvh;overflow:hidden!important;padding:clamp(6px,1.5vmin,18px)}
.modal-card{max-height:100%!important;overflow:hidden!important;min-height:0}
.large-modal{height:min(88dvh,720px);display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:10px}
#listCards{min-height:0;height:100%;display:grid;grid-template-rows:minmax(0,1fr) auto;overflow:hidden}
#calendarModal .modal-card{height:min(86dvh,680px);display:grid;grid-template-rows:auto auto minmax(0,1fr)}
.calendar-grid{min-height:0;height:100%;grid-auto-rows:minmax(0,1fr);overflow:hidden}.day{aspect-ratio:auto;min-height:0}

/* formula editor */
.formula-modal{width:min(860px,100%)!important;height:min(94dvh,820px);max-height:94dvh!important;display:grid;grid-template-rows:auto auto auto minmax(0,1fr) auto;gap:clamp(6px,1vmin,12px);padding:clamp(10px,1.8vmin,22px)!important;overflow:hidden!important}
.card-meta-grid{margin:0;gap:clamp(5px,.8vmin,10px)}.face-tabs{margin:0}
.face-editor{min-height:0;height:100%;overflow:hidden}.face-editor.active{display:grid;grid-template-rows:auto minmax(0,1fr);gap:6px}
.block-toolbar{margin:0;gap:5px}.block-add{padding:clamp(6px,1vmin,11px) 5px;font-size:clamp(10px,1.25vmin,13px)}
.blocks-editor{min-height:0;height:100%;overflow:hidden;display:grid;grid-template-rows:auto minmax(0,1fr);gap:5px}
.editor-block{min-height:0;height:100%;overflow:hidden;display:grid;grid-template-rows:auto minmax(0,1fr)}
.block-head{margin-bottom:4px}.block-text{height:100%!important;min-height:0!important;resize:none!important;overflow:hidden!important;font-size:clamp(11px,1.5vmin,14px)}
.formula-shell,.draw-shell,.image-shell{min-height:0;height:100%;overflow:hidden}.formula-shell{display:flex;flex-direction:column}
math-field.visual-math{min-height:0;height:100%;font-size:clamp(18px,3vmin,25px)}.formula-hint{flex:none}
.draw-shell{display:grid;grid-template-rows:minmax(0,1fr) auto}.draw-canvas{height:100%!important;min-height:0}
.image-shell{grid-template-rows:minmax(0,1fr) auto}.block-image{max-height:100%!important;height:100%;object-fit:contain;margin:0 auto}.image-placeholder{min-height:0;height:100%}
.editor-footer{margin:0}
body.math-keyboard-open #cardModal{place-items:start center;padding-bottom:min(42dvh,370px)}
.formula-modal.math-keyboard-open{height:calc(100dvh - min(42dvh,370px) - 10px)!important;max-height:none!important;padding-bottom:8px!important;grid-template-rows:auto minmax(0,1fr) auto}
.formula-modal.math-keyboard-open .card-meta-grid,.formula-modal.math-keyboard-open .face-tabs,.formula-modal.math-keyboard-open .block-toolbar{display:none}
.formula-modal.math-keyboard-open .face-editor.active{grid-template-rows:minmax(0,1fr)}.formula-modal.math-keyboard-open .blocks-editor{grid-template-rows:auto minmax(0,1fr)}
.formula-modal.math-keyboard-open .editor-block{border-color:rgba(124,92,255,.35)}

/* account */
#account.active{height:100%}.settings-grid{height:100%;min-height:0}.settings-grid>.panel{height:100%;overflow:hidden}

/* compact viewport profiles */
html.vp-short .brand-copy p,html.vp-short .metric small,html.vp-short .quick-panel p{display:none}
html.vp-short .app-header{padding-block:2px}html.vp-short .brand-mark{width:40px;height:40px}html.vp-short .tabs{padding:3px}html.vp-short .tab{padding:6px 5px}
html.vp-short #dashboard.active{grid-template-rows:minmax(0,1fr) auto minmax(0,.9fr)}html.vp-short .hero p{display:none}html.vp-short .chips{margin:4px 0 6px}
html.vp-short .metrics{grid-template-columns:repeat(4,1fr)}
html.vp-short .metric{display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;column-gap:7px;align-items:center}
html.vp-short .metric-icon{grid-row:1/3;margin:0}html.vp-short .metric span,html.vp-short .metric strong{margin:0}
html.vp-short .dashboard-grid{grid-template-columns:minmax(0,1.5fr) minmax(150px,.5fr)}html.vp-short .boxes-grid{grid-template-columns:repeat(7,1fr)}
html.vp-short .box-frequency{display:none}html.vp-short .box-count{margin-top:3px}html.vp-short .quick-panel .eyebrow{display:none}
html.vp-short .quick-panel h3{margin:0 0 4px}
html.vp-very-short .header-actions{display:none}html.vp-very-short .brand-pill,html.vp-very-short .soft-label,html.vp-very-short .hero-orb,html.vp-very-short .chips{display:none}
html.vp-very-short #dashboard.active{grid-template-rows:minmax(70px,.8fr) auto minmax(78px,1fr)}html.vp-very-short .hero{padding:8px 12px}
html.vp-very-short .hero h2{font-size:clamp(20px,6vmin,30px);margin:2px 0}html.vp-very-short .metric{padding:5px 7px}html.vp-very-short .metric-icon{display:none}
html.vp-very-short .dashboard-grid .pad{padding:6px}html.vp-very-short .dashboard-grid h3{font-size:12px}html.vp-very-short .box-tile{padding:5px}
html.vp-very-short .box-count{font-size:8px}html.vp-very-short .quick-panel .btn{margin-top:3px;padding:5px 6px}
html.vp-narrow .version{display:none}html.vp-narrow .brand-pill{display:none}
html.vp-narrow .library-layout{grid-template-columns:minmax(135px,35%) minmax(0,1fr)}
html.vp-narrow .library-sidebar .eyebrow{display:none}html.vp-narrow .library-sidebar h3{font-size:14px}
html.vp-narrow .tree-item span:first-child{max-width:100px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
html.vp-narrow .folder-actions .btn{padding:7px 8px;font-size:10px}html.vp-narrow .selection-bar{padding:6px}
html.vp-narrow .selection-actions .btn{padding:6px;font-size:9px}html.vp-narrow .summary-layout{grid-template-columns:1fr}
html.vp-narrow .session-donut{width:min(22dvh,150px)}html.vp-narrow .summary-stats{width:100%}
html.vp-narrow .card-meta-grid{grid-template-columns:1fr 1fr}html.vp-narrow .card-meta-grid label:last-child{grid-column:1/-1}
html.vp-narrow .block-toolbar{grid-template-columns:repeat(4,1fr)}html.vp-narrow .block-add span{display:none}

@media(max-width:620px){
  body{padding:8px!important}.app-shell{gap:5px}.app-header{align-items:center}.brand-copy h1{font-size:20px}.tabs{gap:3px}.tab{font-size:10px}.nav-dot{display:none}
  #dashboard.active{grid-template-rows:minmax(0,1.15fr) auto minmax(0,1fr)}.hero-content{max-width:100%}.hero-orb{display:none}.metrics{grid-template-columns:repeat(2,1fr)}
  .dashboard-grid{grid-template-columns:1fr}.boxes-grid{grid-template-columns:repeat(4,1fr)}
  .quick-panel{display:grid;grid-template-columns:1fr 1fr;align-content:center;gap:5px}.quick-panel .eyebrow,.quick-panel h3,.quick-panel p{grid-column:1/-1}.quick-panel .btn{margin:0}
  .library-layout{grid-template-columns:minmax(122px,34%) minmax(0,1fr)!important}.library-topbar{gap:5px}#toggleSelect{padding:7px 8px;font-size:10px}
  .card-row{grid-template-columns:auto auto minmax(0,1fr)!important;gap:6px}.card-actions{grid-column:auto!important}.select-check{width:16px;height:16px}
}
@media(max-height:500px){
  body{padding:5px!important}.app-shell{gap:3px}.app-header{display:none}.tabs{border-radius:12px}
  #dashboard.active{grid-template-rows:minmax(58px,.65fr) auto minmax(72px,1fr)}
  .hero .eyebrow,.hero p,.hero-orb,.chips{display:none}.hero h2{font-size:20px}.hero .btn{padding:5px 8px;font-size:10px}
  .metric span{font-size:8px}.metric strong{font-size:16px}.review-root{gap:3px}.review-session-head{margin:0;font-size:9px}.retry-banner{padding:4px 7px}
  .summary-kicker{font-size:8px}.session-summary h2{font-size:20px}.summary-lead{display:none}.session-donut{width:95px}
  .summary-layout{grid-template-columns:110px 1fr;gap:10px;margin:2px auto 6px}.summary-actions .btn{padding:6px 8px;font-size:10px}
}

/* v1.4.1 QA correction: review uses flex so optional retry row never steals card height */
.review-root{
  display:flex!important;
  flex-direction:column;
  align-items:stretch;
}
.review-root>.flip-stage{flex:1 1 auto;min-height:0}
.review-root>.review-session-head,
.review-root>.progress,
.review-root>.retry-banner,
.review-root>.review-actions{flex:0 0 auto}
.review-root:has(.session-summary){display:flex!important;align-items:center;justify-content:center}
@media(max-height:500px){
  .app-shell{grid-template-rows:auto minmax(0,1fr)}
}

/* Extra-compact scientific editor for very short Stage Manager / landscape windows */
@media(max-height:500px){
  #cardModal .formula-modal{
    position:relative;
    height:calc(100dvh - 10px)!important;
    max-height:calc(100dvh - 10px)!important;
    padding:6px!important;
    gap:4px!important;
    grid-template-rows:auto auto minmax(0,1fr) auto!important;
  }
  #cardModal .formula-modal>.section-head{
    position:absolute;right:7px;top:7px;z-index:6;margin:0
  }
  #cardModal .formula-modal>.section-head>div{display:none}
  #closeCardModal{width:28px;height:28px}
  #cardModal .card-meta-grid{
    grid-template-columns:repeat(3,minmax(0,1fr))!important;
    gap:4px!important;
    padding-right:32px
  }
  #cardModal .card-meta-grid label{font-size:8px;gap:2px}
  #cardModal .card-meta-grid label:last-child{grid-column:auto!important}
  #cardModal .card-meta-grid select{height:28px;padding:3px 5px;font-size:9px;border-radius:8px}
  #cardModal .combo-row{gap:3px}
  #cardModal .combo-row .mini-btn{width:28px;height:28px;border-radius:8px}
  #cardModal .face-tabs{padding:2px;gap:3px;border-radius:10px}
  #cardModal .face-tab{padding:4px;font-size:9px;border-radius:7px}
  #cardModal .block-toolbar{height:28px;gap:3px}
  #cardModal .block-add{padding:3px!important;font-size:9px;border-radius:8px}
  #cardModal .block-add span{display:none}
  #cardModal .block-page-head{height:22px;font-size:9px}
  #cardModal .block-page-nav{height:22px;width:27px}
  #cardModal .editor-block{padding:5px;border-radius:10px}
  #cardModal .block-head{height:22px;margin:0}
  #cardModal .block-type{font-size:8px}
  #cardModal .block-controls button{width:23px;height:22px;border-radius:6px;font-size:9px}
  #cardModal .block-text{font-size:10px!important;padding:5px}
  #cardModal .formula-hint{display:none}
  #cardModal .draw-actions{padding:3px}
  #cardModal .mini-action,#cardModal .image-picker{padding:4px 6px;font-size:9px}
  #cardModal .editor-footer{gap:4px}
  #cardModal .editor-footer .btn{height:29px;padding:4px 7px;font-size:9px;border-radius:8px}
}

/* Compact login so even a short landscape window never scrolls */
@media(max-height:520px){
  .auth-gate{padding:5px!important;overflow:hidden!important}
  .auth-card{
    width:min(520px,100%);
    max-height:100%;
    padding:9px 12px!important;
    display:grid;
    grid-template-rows:auto auto auto auto;
    gap:5px;
    overflow:hidden!important
  }
  .auth-brand{margin:0;gap:8px}
  .auth-logo{width:36px;height:36px;border-radius:11px;font-size:17px}
  .auth-card h2{font-size:20px;margin:0}
  .auth-card>p.muted{display:none}
  .auth-tabs{margin:0;padding:3px;gap:4px}
  .auth-tab{padding:5px;font-size:10px}
  .auth-card .form-stack{gap:5px;grid-template-columns:1fr 1fr auto;align-items:end}
  .auth-card .form-stack label{font-size:8px;gap:2px}
  .auth-card .form-stack input{height:30px;padding:4px 7px;font-size:10px;border-radius:8px}
  .auth-card .form-stack .btn{height:30px;padding:4px 9px;font-size:10px;border-radius:8px;white-space:nowrap}
  .auth-message{min-height:12px;margin:0;font-size:9px}
}
@media(max-width:560px) and (max-height:520px){
  .auth-card .form-stack{grid-template-columns:1fr 1fr}
  .auth-card .form-stack .btn{grid-column:1/-1}
}


/* v1.4.2 — CONTEXT / fast capture / remember-me / admin */
.breadcrumb{display:flex;align-items:center;gap:6px;min-width:0;margin-bottom:3px;font-size:11px;color:var(--muted)}
.breadcrumb button{appearance:none;border:0;background:transparent;color:inherit;padding:0;cursor:pointer;font:inherit;max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.breadcrumb button:hover{color:var(--text)}
.breadcrumb .crumb-sep{opacity:.45}
.breadcrumb .crumb-current{color:var(--text);font-weight:700;max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.remember-check{display:flex!important;flex-direction:row!important;align-items:center!important;gap:8px!important;align-self:center;cursor:pointer;user-select:none;color:var(--muted);font-size:12px!important;white-space:nowrap}
.remember-check input{width:16px!important;height:16px!important;min-height:0!important;accent-color:#7c5cff;padding:0!important;margin:0}
.admin-panel{margin-top:14px}
.admin-note{margin:2px 0 12px}
.admin-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.admin-stat{border:1px solid var(--line);background:rgba(255,255,255,.025);border-radius:14px;padding:13px;min-width:0}
.admin-stat span{display:block;color:var(--muted);font-size:11px;line-height:1.25}
.admin-stat strong{display:block;margin-top:5px;font-size:24px;letter-spacing:-.04em}
.admin-stat small{display:block;margin-top:3px;color:var(--muted);font-size:9px}
@media (max-width:760px){.admin-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-stat{padding:9px}.admin-stat strong{font-size:20px}}
@media (max-height:620px){.admin-panel{margin-top:7px}.admin-note{display:none}.admin-stats{gap:5px}.admin-stat{padding:6px 8px;border-radius:10px}.admin-stat strong{font-size:16px;margin-top:2px}.admin-stat small{display:none}.remember-check{font-size:9px!important;gap:5px!important}.remember-check input{width:13px!important;height:13px!important}}
@media (max-height:560px){.auth-card .remember-check{grid-column:1/-1;justify-self:start}}
@media (min-width:561px) and (max-height:520px){
  .auth-card .form-stack{grid-template-columns:1fr 1fr!important}
}
/* v1.4.2 account layout stays inside the viewport, including admin */
#account.active .settings-grid{height:100%;min-height:0;grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:minmax(0,1fr)}
#account.active .settings-grid>.panel{height:auto!important;min-height:0;overflow:hidden}
#account.active .admin-panel{margin-top:0}
@media (min-width:900px), (min-width:680px) and (max-height:650px){
  #account.active .settings-grid{grid-template-columns:repeat(3,minmax(0,1fr));grid-template-rows:minmax(0,1fr);grid-auto-rows:minmax(0,1fr)}
}
@media (max-width:679px) and (min-height:650px){
  #account.active .settings-grid{grid-template-columns:1fr;grid-template-rows:repeat(3,minmax(0,1fr));grid-auto-rows:minmax(0,1fr)}
  #account.active .panel.pad{padding:clamp(8px,1.3vmin,14px)}
}
@media (max-width:679px) and (min-height:650px){
  #account.active.has-admin .settings-grid{grid-template-rows:minmax(0,.62fr) minmax(0,.62fr) minmax(0,1.76fr)}
  #account.active:not(.has-admin) .settings-grid{grid-template-rows:repeat(2,minmax(0,1fr))}
  #account.active .admin-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}
  #account.active .admin-stat{padding:6px;border-radius:9px}
  #account.active .admin-stat span{font-size:8px}
  #account.active .admin-stat strong{font-size:17px;margin-top:1px}
  #account.active .admin-stat small{display:none}
  #account.active .admin-note{margin:0 0 6px;font-size:9px}
}
@media (min-width:561px) and (max-height:520px){
  .auth-card .remember-check.hidden + .btn{grid-column:1/-1}
}


/* v1.4.3 — FOCUS: contextual daily-session filters + immediate face focus */
.today-scope{
  width:min(700px,100%);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;
  align-items:end;gap:8px;margin:clamp(6px,1vmin,10px) 0;
}
.today-scope label{min-width:0;display:grid;gap:4px;color:var(--muted);font-size:10px;font-weight:750;letter-spacing:.06em;text-transform:uppercase}
.today-scope select{min-width:0;height:36px;padding:6px 10px;border-radius:11px;font-size:12px;text-transform:none;letter-spacing:0;font-weight:650}
.today-scope-count{height:36px;min-width:72px;padding:0 10px;display:grid;place-items:center;border:1px solid var(--line);border-radius:11px;background:rgba(255,255,255,.035);color:var(--muted);font-size:11px;font-weight:750;white-space:nowrap}
#startToday:disabled{opacity:.48;cursor:not-allowed;transform:none!important}
@media(max-width:620px){
  .today-scope{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:6px}
  .today-scope-count{grid-column:1/-1;height:24px;min-width:0;padding:0 7px;justify-self:start}
  .today-scope select{font-size:11px}
}
html.vp-short .today-scope{margin:4px 0}.vp-short .today-scope label>span{display:none}.vp-short .today-scope select{height:31px;padding:4px 8px}.vp-short .today-scope-count{height:31px}
html.vp-very-short .today-scope{grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;gap:4px;margin:2px 0}
html.vp-very-short .today-scope select{height:26px;padding:2px 6px;font-size:9px;border-radius:8px}
html.vp-very-short .today-scope-count{grid-column:auto;height:26px;min-width:48px;padding:0 5px;font-size:8px;border-radius:8px}