:root {
  --aubergine-950:#1d0d2a; --aubergine-900:#2b163f; --aubergine-800:#3b2053; --aubergine-700:#55306d;
  --plum-500:#8f67ad; --plum-200:#e9ddf1; --orange-600:#cc6424; --orange-500:#e47a2f; --orange-200:#f8d9bd;
  --cream:#fbf8f4; --paper:#fffdfb; --ink:#24152e; --muted:#736b78; --line:#e8e1e9;
  --green:#2f8a62; --green-bg:#def2e7; --blue:#397fa5; --blue-bg:#dfeff8; --red:#b84d52; --red-bg:#f8e1df;
  --shadow:0 18px 50px rgba(43,22,63,.11); --radius:18px; --radius-sm:12px;
  --font:Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
*{box-sizing:border-box}html{min-height:100%;background:var(--cream);color:var(--ink);font-family:var(--font)}body{margin:0;min-height:100vh;background:radial-gradient(circle at 90% -10%,rgba(228,122,47,.08),transparent 28%),var(--cream)}button,input,select{font:inherit}button,a,label{-webkit-tap-highlight-color:transparent}button{cursor:pointer}.hidden{display:none!important}.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}
h1,h2,h3,p{margin-top:0}h1{font-size:clamp(1.8rem,3vw,2.65rem);line-height:1.05;margin-bottom:.45rem}h2{font-size:1.25rem}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.72rem;font-weight:800;color:var(--orange-600);margin-bottom:.45rem}
.button{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;border:0;border-radius:12px;padding:.76rem 1rem;font-weight:750;text-decoration:none;transition:.18s ease}.button:hover{transform:translateY(-1px)}.button:disabled{cursor:wait;opacity:.6;transform:none}.button-primary{background:var(--aubergine-800);color:#fff;box-shadow:0 8px 20px rgba(59,32,83,.18)}.button-secondary{background:#fff;color:var(--aubergine-800);border:1px solid var(--line)}.button-large{width:100%;padding:1rem 1.2rem}.text-button{border:0;background:transparent;color:var(--aubergine-700);font-weight:700;padding:.6rem}.icon-button{border:0;border-radius:50%;background:var(--plum-200);color:var(--aubergine-900);width:48px;height:48px;font-weight:900}.file-button{position:relative;overflow:hidden}.file-button input{position:absolute;inset:0;opacity:0;cursor:pointer}
.alert,.info-banner{padding:1rem 1.1rem;border-radius:var(--radius-sm);margin-bottom:1rem}.alert-error{background:var(--red-bg);color:#762f36;border:1px solid #edb9b7}.info-banner{background:#f3edf7;border:1px solid var(--plum-200);color:var(--aubergine-800)}.form-message{min-height:1.4em;color:var(--red);margin:.8rem 0 0}.form-message.success{color:var(--green)}.field,label{font-weight:700;color:var(--aubergine-900)}.field input,label input:not([type=radio]):not([type=checkbox]),label select{display:block;width:100%;margin-top:.4rem;border:1px solid #d9cfdd;border-radius:10px;padding:.78rem .85rem;background:#fff;color:var(--ink)}input:focus,select:focus,button:focus-visible{outline:3px solid rgba(228,122,47,.35);outline-offset:2px}
.brand,.login-brand,.installer-brand{display:flex;align-items:center;gap:.7rem}.brand{color:#fff;text-decoration:none}.brand-mark{display:grid;place-items:center;width:52px;height:52px;border-radius:12px;background:var(--aubergine-900)}.brand-mark img{width:46px;height:46px}.brand-text{display:flex;flex-direction:column;line-height:.92;font-size:1rem}.brand-text b:last-child{font-size:1.14rem}.avatar{display:grid;place-items:center;overflow:hidden;width:42px;height:42px;border-radius:50%;background:linear-gradient(145deg,var(--orange-500),var(--plum-500));color:#fff;font-weight:800}.avatar img{width:100%;height:100%;object-fit:cover}
.login-page,.installer-page{min-height:100vh;display:grid;place-items:center;padding:1.25rem}.login-card,.installer-shell{width:min(100%,720px)}.login-card{background:var(--paper);border:1px solid var(--line);border-radius:26px;padding:clamp(1.4rem,5vw,3rem);box-shadow:var(--shadow)}.login-brand .brand-mark,.installer-brand .brand-mark{width:70px;height:70px}.login-brand h1,.installer-brand h1{margin:0}.login-intro{color:var(--muted);margin:1.3rem 0}.profile-picker{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem;margin-bottom:1.25rem}.profile-choice{display:flex;flex-direction:column;align-items:center;gap:.45rem;padding:.8rem .4rem;border:2px solid transparent;border-radius:14px;background:#f7f2f8;cursor:pointer}.profile-choice:has(input:checked){border-color:var(--orange-500);background:#fff8f1}.profile-choice input{position:absolute;opacity:0}.profile-choice .avatar{width:52px;height:52px}.login-card .button-large{margin-top:1rem}
.installer-shell{padding:2rem 0}.installer-brand{margin-bottom:1.5rem}.installer-brand img{background:var(--aubergine-900);border-radius:16px;padding:.3rem}.installer-form{display:grid;gap:1rem}.panel{background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem;margin-bottom:1rem;box-shadow:0 8px 24px rgba(43,22,63,.04)}.panel>p,.installer-brand p{color:var(--muted)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.span-2{grid-column:1/-1}
.app-header{position:sticky;top:0;z-index:30;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:1.5rem;min-height:78px;padding:.65rem clamp(1rem,4vw,3rem);background:linear-gradient(100deg,var(--aubergine-950),var(--aubergine-900) 55%,#422054);box-shadow:0 4px 18px rgba(43,22,63,.18)}.primary-nav{display:flex;align-self:stretch;justify-content:center;gap:.4rem}.primary-nav button{display:flex;align-items:center;gap:.5rem;border:0;border-bottom:3px solid transparent;background:transparent;color:#e7dcec;padding:.6rem 1rem;font-weight:700}.primary-nav button.active{color:#fff;border-bottom-color:var(--orange-500)}.header-actions{display:flex;align-items:center;gap:.7rem}.language-select select,.scope-select{border:1px solid rgba(255,255,255,.15);border-radius:10px;background:#fff;color:var(--ink);padding:.65rem .8rem;font-weight:700}.profile-button{display:flex;align-items:center;gap:.55rem;border:0;color:#fff;background:rgba(255,255,255,.08);border-radius:14px;padding:.4rem .65rem}.profile-button .avatar{width:38px;height:38px}.main-content{width:min(100% - 2rem,1400px);margin:0 auto;padding:clamp(1.2rem,4vw,2.5rem) 0 7rem}.view{display:none}.view.active{display:block}.mobile-nav{display:none}
.study-topline,.page-heading,.panel-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem}.study-topline{align-items:center}.session-progress{display:flex;align-items:center;gap:.8rem;font-weight:800;min-width:min(360px,40vw)}.progress-track{height:10px;background:#e5dde8;flex:1;border-radius:99px;overflow:hidden}.progress-track span{display:block;height:100%;width:0;background:var(--orange-500);border-radius:inherit;transition:width .3s ease}.direction-switch,.scope-tabs{display:inline-flex;border:1px solid var(--line);background:#fff;border-radius:12px;padding:.25rem;margin:1rem 0}.direction-switch button,.scope-tabs button{border:0;background:transparent;padding:.6rem .85rem;border-radius:9px;color:var(--muted);font-weight:750}.direction-switch button.active,.scope-tabs button.active{background:var(--aubergine-800);color:#fff}.study-card{min-height:440px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:24px;box-shadow:0 16px 40px rgba(43,22,63,.07);padding:clamp(1.4rem,4vw,3rem);position:relative}.card-image{width:min(320px,65vw);height:160px;margin-bottom:1rem}.card-image img{width:100%;height:100%;object-fit:contain}.card-context{color:var(--muted);font-size:.9rem}.card-prompt{font-size:clamp(2rem,5vw,4rem);font-weight:800;line-height:1.08;margin:1rem 0 2rem}.reveal-button{min-width:190px;padding:1rem 2rem;font-size:1.05rem}.answer-area{width:100%;border-top:1px solid var(--line);margin-top:1.4rem;padding-top:1.4rem}.answer-line{display:flex;align-items:center;justify-content:center;gap:1rem}.answer-line strong{font-size:clamp(1.65rem,4vw,3rem)}.card-answer{min-width:0}.noun-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;width:min(680px,80vw);margin-inline:auto}.noun-pair>span{display:block;padding:.8rem 1rem;border:1px solid var(--line);border-radius:14px;background:#fffaf5}.noun-pair small{display:block;margin-bottom:.3rem;color:var(--muted);font-size:.68rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase}.noun-pair strong{display:block;font-size:clamp(1.25rem,3.5vw,2.65rem);line-height:1.15}.card-prompt>.noun-pair strong{font-size:clamp(1.45rem,4vw,3rem)}.answer-area>p{color:var(--muted)}.rating-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem;margin-top:1.2rem}.rating{border:0;border-radius:13px;padding:1rem .6rem;font-weight:800}.rating-again{background:var(--red-bg);color:#8e3840}.rating-hard{background:#fae7cc;color:#9c541d}.rating-good{background:var(--green-bg);color:#266e50}.rating-easy{background:var(--blue-bg);color:#286782}.keep-going{display:flex;justify-content:flex-end;align-items:center;gap:.45rem;margin:1rem .3rem}.keep-going input{width:20px;height:20px;accent-color:var(--orange-500)}
.topic-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:1rem;margin:1rem 0}.topic-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:1.2rem}.topic-card span{color:var(--orange-600);font-weight:800}.page-heading{align-items:center;margin-bottom:1.3rem}.page-heading>div>p:last-child{color:var(--muted)}.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:1rem}.summary-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:1.1rem}.summary-card small{display:block;color:var(--muted);font-weight:750;margin-bottom:.45rem}.summary-card strong{font-size:clamp(1.6rem,3vw,2.3rem)}.panel-heading{align-items:center;margin-bottom:1rem}.panel-heading h2,.panel-heading p{margin-bottom:.25rem}.panel-heading p,.panel-heading span{color:var(--muted);font-size:.86rem}.select-like{border:1px solid var(--line);background:#fff;border-radius:10px;padding:.65rem .8rem}.small-charts{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}.mini-chart{border:1px solid var(--line);border-radius:14px;padding:.8rem;background:#fff}.mini-chart h3{font-size:.95rem}.mini-chart svg,.chart-large svg{width:100%;height:auto;overflow:visible}.chart-large{max-width:900px;margin:auto}.chart-axis{stroke:#cfc4d4;stroke-width:1}.chart-line{fill:none;stroke:var(--orange-500);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.chart-area{fill:rgba(228,122,47,.1)}.chart-label{fill:#746b79;font-size:9px}.table-wrap{overflow:auto}.table-wrap table{width:100%;border-collapse:collapse;min-width:680px}.table-wrap th,.table-wrap td{text-align:left;padding:.75rem;border-bottom:1px solid var(--line);white-space:nowrap}.table-wrap th{font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}.status-pill{display:inline-flex;align-items:center;border-radius:999px;padding:.34rem .65rem;font-size:.78rem;font-weight:750;text-transform:capitalize}.status-active,.status-completed{background:var(--green-bg);color:#266e50}.status-available{background:var(--plum-200);color:var(--aubergine-700)}.status-locked,.status-not_assigned{background:#eeeaf0;color:#675e6b}.status-paused{background:#fae7cc;color:#8c4c1c}.toolbar{display:flex;flex-wrap:wrap;gap:.6rem}
.dialog-card{width:min(92vw,480px);border:0;border-radius:22px;padding:1.5rem;box-shadow:0 28px 90px rgba(20,8,31,.35);color:var(--ink)}.dialog-card::backdrop{background:rgba(29,13,42,.62);backdrop-filter:blur(3px)}.dialog-close{float:right;border:0;background:transparent;font-size:1.8rem;color:var(--muted)}.wide-dialog{width:min(92vw,680px)}.security-icon{display:grid;place-items:center;width:62px;height:62px;border-radius:18px;background:var(--aubergine-900);color:var(--orange-500);font-size:2.2rem;margin:0 auto 1rem}.pin-dialog{text-align:center}.pin-dialog .field{text-align:left}.dialog-actions{display:flex;justify-content:flex-end;gap:.65rem;margin-top:1rem}.profile-list{display:grid;grid-template-columns:repeat(2,1fr);gap:.6rem;margin:1rem 0}.profile-list button{display:flex;align-items:center;gap:.6rem;border:1px solid var(--line);background:#fff;border-radius:12px;padding:.6rem}.profile-list button.selected{border-color:var(--orange-500);background:#fff8f1}.profile-list .avatar{width:36px;height:36px}.logout-button{display:block;color:var(--red);margin-top:.8rem}.toast{position:fixed;z-index:80;right:1rem;bottom:1rem;transform:translateY(140%);background:var(--aubergine-900);color:#fff;padding:.9rem 1.1rem;border-radius:12px;box-shadow:var(--shadow);transition:.25s}.toast.show{transform:translateY(0)}.empty-state h2{font-size:1.7rem}
.dialog-card{width:min(92vw,480px);border:0;border-radius:22px;padding:1.5rem;box-shadow:0 28px 90px rgba(20,8,31,.35);color:var(--ink)}.dialog-card::backdrop{background:rgba(29,13,42,.62);backdrop-filter:blur(3px)}.dialog-close{float:right;border:0;background:transparent;font-size:1.8rem;color:var(--muted)}.wide-dialog{width:min(92vw,680px)}.security-icon{display:grid;place-items:center;width:62px;height:62px;border-radius:18px;background:var(--aubergine-900);color:var(--orange-500);font-size:2.2rem;margin:0 auto 1rem}.pin-dialog{text-align:center}.pin-dialog .field{text-align:left}.dialog-actions{display:flex;justify-content:flex-end;gap:.65rem;margin-top:1rem}.profile-list{display:grid;grid-template-columns:repeat(2,1fr);gap:.6rem;margin:1rem 0}.profile-list button{display:flex;align-items:center;gap:.6rem;border:1px solid var(--line);background:#fff;border-radius:12px;padding:.6rem}.profile-list button.selected{border-color:var(--orange-500);background:#fff8f1}.profile-list .avatar{width:36px;height:36px}.profile-actions{display:flex;flex-wrap:wrap;gap:.6rem}.logout-button{display:block;color:var(--red);margin-top:.8rem}.toast{position:fixed;z-index:80;right:1rem;bottom:1rem;transform:translateY(140%);background:var(--aubergine-900);color:#fff;padding:.9rem 1.1rem;border-radius:12px;box-shadow:var(--shadow);transition:.25s}.toast.show{transform:translateY(0)}.empty-state h2{font-size:1.7rem}
.security-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:1rem;align-items:start}.security-panel{margin:0}.security-panel-heading{display:flex;align-items:flex-start;gap:.8rem;margin-bottom:1rem}.security-panel-heading>span{display:grid;place-items:center;flex:0 0 42px;width:42px;height:42px;border-radius:12px;background:var(--plum-200);color:var(--orange-600);font-size:1.15rem;font-weight:900}.security-panel-heading h2{margin-bottom:.25rem}.security-panel-heading p,.field-help{color:var(--muted);font-size:.86rem;margin-bottom:0}.security-form{display:grid;gap:.85rem}.security-form .button{justify-self:start}.security-form .form-message{margin:0}
.child-mode .study-card{min-height:500px}.child-mode .card-prompt{font-size:clamp(2.4rem,6vw,4.6rem)}.child-mode .rating{font-size:1rem;padding:1.15rem}.child-mode .direction-switch{display:none}.child-mode .primary-nav{display:none}.child-mode .mobile-nav{position:fixed;z-index:40;display:grid;grid-template-columns:repeat(3,1fr);bottom:0;left:50%;transform:translateX(-50%);width:min(100%,760px);padding:.45rem max(.3rem,env(safe-area-inset-right)) max(.45rem,env(safe-area-inset-bottom));background:var(--aubergine-900);border-radius:18px 18px 0 0;box-shadow:0 -5px 20px rgba(43,22,63,.2)}.child-mode .mobile-nav button{display:flex;flex-direction:column;align-items:center;gap:.2rem;border:0;background:transparent;color:#d9cde1;padding:.65rem .2rem;border-radius:10px}.child-mode .mobile-nav button.active{color:#fff;background:rgba(255,255,255,.1)}.child-mode .mobile-nav button span{color:var(--orange-500)}
@media(max-width:1050px){.primary-nav button{padding:.6rem}.primary-nav button span:last-child{display:none}.small-charts{grid-template-columns:repeat(2,1fr)}.summary-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.app-header{grid-template-columns:auto 1fr;min-height:68px;padding:.5rem .8rem}.brand-text{display:none}.brand-mark{width:48px;height:48px}.primary-nav{display:none}.header-actions{justify-content:flex-end}.profile-button #header-name{display:none}.language-select select{max-width:130px}.main-content{width:min(100% - 1rem,1400px);padding-top:1rem}.mobile-nav{position:fixed;z-index:40;display:grid;grid-template-columns:repeat(3,1fr);bottom:0;left:0;right:0;padding:.45rem max(.3rem,env(safe-area-inset-right)) max(.45rem,env(safe-area-inset-bottom));background:var(--aubergine-900);box-shadow:0 -5px 20px rgba(43,22,63,.2)}.mobile-nav button{display:flex;flex-direction:column;align-items:center;gap:.2rem;border:0;background:transparent;color:#d9cde1;padding:.5rem .2rem;border-radius:10px}.mobile-nav button.active{color:#fff;background:rgba(255,255,255,.1)}.mobile-nav button span{color:var(--orange-500)}.study-topline{align-items:flex-start}.session-progress{min-width:130px;flex-direction:column;align-items:flex-end;gap:.35rem}.progress-track{width:120px;min-height:8px}.study-card{min-height:390px;padding:1.1rem}.rating-grid{grid-template-columns:repeat(2,1fr)}.page-heading{align-items:flex-start;flex-direction:column}.scope-tabs{width:100%;overflow:auto}.small-charts{grid-template-columns:1fr}.summary-grid{grid-template-columns:repeat(2,1fr)}.panel{padding:.9rem}.panel-heading{align-items:flex-start;flex-direction:column}.form-grid{grid-template-columns:1fr}.span-2{grid-column:auto}.profile-picker{grid-template-columns:repeat(2,1fr)}.installer-page{padding:.6rem}.dialog-card{padding:1.2rem}.toolbar{width:100%}.toolbar .button{flex:1}.child-mode .study-card{min-height:430px}}
@media(max-width:760px){.child-mode .mobile-nav{left:0;right:0;transform:none;width:100%;border-radius:0}}
@media(max-width:420px){.summary-grid{grid-template-columns:1fr 1fr;gap:.55rem}.summary-card{padding:.8rem}.profile-button{padding:.25rem}.language-select select{max-width:108px}.card-prompt{font-size:2rem}.noun-pair{width:100%;gap:.45rem}.noun-pair>span{padding:.65rem .45rem}.rating{padding:.8rem .35rem;font-size:.86rem}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}
.package-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:.8rem}.package-card{border:1px solid var(--line);border-radius:14px;padding:1rem;background:#fff}.package-card h3{margin-bottom:.3rem}.package-card p{color:var(--muted);font-size:.88rem}.package-card-footer{display:flex;justify-content:space-between;align-items:center;gap:.6rem;margin-top:.8rem}.package-card progress{width:100%;accent-color:var(--orange-500)}