:root{
  color-scheme:dark;
  --bg:#03070d;
  --bg-2:#07101b;
  --panel:rgba(13,22,35,.76);
  --panel-solid:#0d1724;
  --panel-soft:rgba(255,255,255,.045);
  --line:rgba(142,211,255,.16);
  --line-strong:rgba(102,222,255,.34);
  --text:#f8fbff;
  --muted:#a9bac8;
  --cyan:#59ddff;
  --blue:#258cff;
  --violet:#a66cff;
  --red:#ff4762;
  --gold:#ffd766;
  --green:#62eba7;
  --radius:28px;
  --shadow:0 30px 90px rgba(0,0,0,.42);
  --max:1500px;
}
*{box-sizing:border-box}
html{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",sans-serif;background:var(--bg);scroll-behavior:smooth}
body{margin:0;min-height:100vh;color:var(--text);background:
  radial-gradient(1000px 620px at 10% -10%,rgba(32,166,255,.14),transparent 62%),
  radial-gradient(860px 560px at 92% 0%,rgba(255,49,92,.10),transparent 62%),
  linear-gradient(180deg,#03070d,#07111c 56%,#03070b);overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;background-image:linear-gradient(rgba(89,221,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(89,221,255,.035) 1px,transparent 1px);background-size:52px 52px;mask-image:linear-gradient(to bottom,#000,transparent 86%)}
button,input,select,textarea{font:inherit}
button,a{color:inherit}
a{text-decoration:none}
button{cursor:pointer}
img{display:block;max-width:100%}
[hidden]{display:none!important}
.glass-panel{background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.035));border:1px solid rgba(255,255,255,.09);box-shadow:var(--shadow);backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px)}
.eyebrow{display:inline-block;color:var(--cyan);font-size:.73rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase}
.button{min-height:48px;padding:0 18px;border-radius:15px;border:1px solid rgba(255,255,255,.12);display:inline-flex;align-items:center;justify-content:center;gap:9px;background:rgba(255,255,255,.05);font-weight:850;transition:transform .18s ease,border-color .18s ease,background .18s ease}
.button:hover{transform:translateY(-1px);border-color:rgba(89,221,255,.38)}
.button:disabled{opacity:.46;cursor:not-allowed;transform:none}
.button.primary{color:#031018;background:linear-gradient(135deg,var(--cyan),#75a7ff 58%,#c67cff);border:0;box-shadow:0 18px 55px rgba(69,178,255,.24)}
.button.secondary{background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.04))}
.button.ghost{background:transparent}
.button.compact{min-height:40px;padding:0 14px;font-size:.85rem;border-radius:13px}
.text-button,.icon-button{border:0;background:transparent}
.text-button{color:var(--cyan);font-weight:800}
.icon-button{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;font-size:1.15rem;background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.08)}

/* Auth */
.auth-page{min-height:100vh;display:grid;grid-template-columns:minmax(420px,.88fr) minmax(560px,1.12fr);align-items:stretch}
.auth-panel{display:flex;align-items:center;justify-content:center;padding:54px 38px;position:relative;z-index:2}
.auth-card{width:min(480px,100%);padding:34px;border-radius:34px;background:rgba(8,14,23,.82);border:1px solid rgba(255,255,255,.10);box-shadow:0 36px 120px rgba(0,0,0,.48);backdrop-filter:blur(28px)}
.auth-logo{width:220px;margin-bottom:30px}
.auth-badge{display:inline-flex;padding:8px 12px;border-radius:999px;background:rgba(89,221,255,.09);border:1px solid rgba(89,221,255,.18);color:var(--cyan);font-size:.72rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase}
.auth-card h1{margin:18px 0 12px;font-size:clamp(2.15rem,4vw,3.45rem);line-height:.98;letter-spacing:-.055em}
.auth-card>p{margin:0 0 25px;color:var(--muted);line-height:1.65}
.auth-form{display:grid;gap:16px}
.field{display:grid;gap:8px}
.field>span{font-size:.83rem;font-weight:800;color:#dce8f0}
.input-shell{display:flex;align-items:center;gap:8px;padding:0 12px;border-radius:16px;background:#050a12;border:1px solid rgba(255,255,255,.12);transition:border-color .18s ease,box-shadow .18s ease}
.input-shell:focus-within{border-color:rgba(89,221,255,.5);box-shadow:0 0 0 4px rgba(89,221,255,.08)}
.input-shell input{width:100%;min-height:52px;border:0;outline:0;background:transparent;color:#fff}
.input-shell button{border:0;background:transparent;color:var(--muted);font-size:.8rem;font-weight:800}
.form-meta{display:flex;justify-content:flex-end}
.link-button{padding:0;border:0;background:transparent;color:var(--cyan);font-weight:750}
.auth-status{padding:12px 14px;border-radius:14px;font-size:.88rem;line-height:1.5;background:rgba(89,221,255,.08);border:1px solid rgba(89,221,255,.18)}
.auth-status[data-type="error"]{color:#ffdfe4;background:rgba(255,71,98,.09);border-color:rgba(255,71,98,.24)}
.auth-status[data-type="warning"]{color:#fff0bf;background:rgba(255,215,102,.09);border-color:rgba(255,215,102,.23)}
.auth-status[data-type="success"]{color:#dfffee;background:rgba(98,235,167,.09);border-color:rgba(98,235,167,.22)}
.setup-notice{margin-top:18px;padding:16px;border-radius:18px;background:rgba(255,215,102,.075);border:1px solid rgba(255,215,102,.20)}
.setup-notice strong{display:block;color:var(--gold);margin-bottom:6px}
.setup-notice code{display:block;margin-top:8px;color:#fff;font-size:.8rem;word-break:break-all}
.auth-support{display:flex;justify-content:space-between;gap:16px;margin-top:24px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);font-size:.82rem;color:var(--muted)}
.auth-support a{color:#e7f7ff}
.auth-visual{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;padding:50px;background:radial-gradient(circle at 72% 20%,rgba(255,71,98,.16),transparent 28%),radial-gradient(circle at 20% 80%,rgba(89,221,255,.15),transparent 30%)}
.auth-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--bg),transparent 15%),linear-gradient(180deg,transparent 70%,var(--bg));pointer-events:none}
.auth-hero{position:relative;z-index:1;width:min(820px,100%);display:grid;gap:22px}
.auth-hero img{width:100%;border-radius:32px;border:1px solid rgba(89,221,255,.22);box-shadow:0 50px 150px rgba(0,0,0,.55)}
.auth-hero-copy{display:flex;justify-content:space-between;gap:28px;align-items:flex-end}
.auth-hero h2{margin:0;font-size:clamp(2.2rem,4vw,4.7rem);line-height:.96;letter-spacing:-.055em;max-width:10ch}
.auth-hero p{margin:0;color:#c5d5df;max-width:46ch;line-height:1.65}
.auth-proof{display:flex;gap:10px;flex-wrap:wrap}
.auth-proof span{padding:10px 13px;border-radius:999px;background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.09);font-size:.8rem;font-weight:750}

/* Loading + access */
.app-loading{min-height:100vh;display:grid;place-items:center;text-align:center;padding:30px}
.loader-mark{width:64px;height:64px;margin:0 auto 20px;border-radius:22px;background:linear-gradient(135deg,var(--cyan),var(--violet),var(--red));box-shadow:0 18px 60px rgba(89,221,255,.22);animation:float 1.8s ease-in-out infinite}
.app-loading p{color:var(--muted)}
.setup-loader{max-width:640px;padding:32px;border-radius:28px;background:var(--panel);border:1px solid var(--line)}
.setup-loader h1{margin:0 0 12px}.setup-loader p{color:var(--muted)}.setup-loader code{color:var(--gold)}
.access-state{min-height:100vh;display:grid;place-items:center;padding:32px}
.access-card{width:min(650px,100%);padding:38px;border-radius:32px;text-align:center}
.access-icon{width:74px;height:74px;display:grid;place-items:center;margin:0 auto 20px;border-radius:24px;background:rgba(89,221,255,.08);border:1px solid var(--line);font-size:2rem}
.access-card h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1;margin:14px 0;letter-spacing:-.055em}.access-card p{color:var(--muted);line-height:1.65}.access-card code{display:block;margin:18px auto;padding:12px;border-radius:12px;background:#040811;color:var(--gold)}.access-actions{display:flex;gap:12px;justify-content:center;margin:24px 0}.access-card small{color:var(--muted)}.technical-message{font-size:.8rem}

/* App shell */
.app-layout{min-height:100vh;display:grid;grid-template-columns:270px minmax(0,1fr)}
.sidebar{position:sticky;top:0;height:100vh;padding:22px 18px;border-right:1px solid rgba(255,255,255,.08);background:rgba(3,8,14,.76);backdrop-filter:blur(24px);display:flex;flex-direction:column;z-index:60}
.app-brand{display:flex;flex-direction:column;gap:12px;padding:8px 10px 24px;border-bottom:1px solid rgba(255,255,255,.08)}
.app-brand img{width:196px}.app-brand span{font-size:.75rem;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}.app-brand b{color:var(--cyan)}
.side-nav{display:grid;gap:7px;margin-top:22px}
.nav-item{width:100%;display:flex;align-items:center;gap:13px;min-height:50px;padding:0 14px;border-radius:16px;border:1px solid transparent;background:transparent;color:var(--muted);text-align:left}
.nav-item span{width:26px;text-align:center;font-size:1.1rem}.nav-item b{font-size:.92rem}
.nav-item:hover,.nav-item.active{color:#fff;background:rgba(89,221,255,.075);border-color:rgba(89,221,255,.15)}
.nav-item.active span{color:var(--cyan)}
.sidebar-footer{margin-top:auto;padding:18px 10px 5px}.sidebar-footer p{font-size:.7rem;color:#627586}.sync-pill{display:flex;align-items:center;gap:8px;color:#bcd0db;font-size:.75rem}.sync-pill span{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 14px var(--green)}
.main-column{min-width:0}
.topbar{position:sticky;top:0;z-index:50;height:82px;display:flex;align-items:center;gap:16px;padding:0 28px;border-bottom:1px solid rgba(255,255,255,.07);background:rgba(4,9,15,.72);backdrop-filter:blur(24px)}
.global-search{flex:1;max-width:720px;display:flex;align-items:center;gap:10px;padding:0 15px;border-radius:17px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09)}
.global-search span{font-size:1.35rem;color:var(--muted)}.global-search input{width:100%;height:48px;border:0;outline:0;color:#fff;background:transparent}.global-search input::placeholder{color:#718493}
.profile-button{margin-left:auto;display:flex;align-items:center;gap:11px;padding:6px 10px 6px 7px;border-radius:18px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08);text-align:left}
.profile-button>span{width:38px;height:38px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,var(--cyan),var(--violet));color:#061018;font-weight:950}.profile-button b,.profile-button small{display:block}.profile-button small{color:var(--muted);max-width:210px;overflow:hidden;text-overflow:ellipsis}.mobile-menu{display:none}
.main-content{width:min(var(--max),100%);margin:0 auto;padding:34px 28px 110px}
.mobile-tabs{display:none}

/* Dashboard */
.welcome-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(280px,.6fr);gap:18px}
.welcome-card,.daily-card{border-radius:30px;padding:30px}
.welcome-card{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:260px;background:radial-gradient(400px 250px at 0% 0%,rgba(89,221,255,.14),transparent 75%),radial-gradient(360px 220px at 100% 100%,rgba(166,108,255,.13),transparent 70%),linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.035));border:1px solid rgba(89,221,255,.18)}
.welcome-card h1{font-size:clamp(3rem,6vw,6.4rem);line-height:.92;letter-spacing:-.07em;margin:10px 0 14px}.welcome-card p,.daily-card p{color:var(--muted);line-height:1.65;max-width:55ch}
.progress-orbit{--progress:0deg;width:150px;aspect-ratio:1;border-radius:50%;padding:11px;background:conic-gradient(var(--cyan) var(--progress),rgba(255,255,255,.08) 0);box-shadow:0 0 55px rgba(89,221,255,.16);flex:0 0 auto}
.progress-orbit>div{height:100%;border-radius:50%;display:grid;place-content:center;text-align:center;background:#09131f;border:1px solid rgba(255,255,255,.09)}.progress-orbit strong{font-size:2.3rem}.progress-orbit span{color:var(--muted);font-size:.75rem}
.daily-card{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;background:radial-gradient(300px 220px at 100% 0%,rgba(255,71,98,.12),transparent 70%),linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.035));border:1px solid rgba(255,71,98,.15)}.daily-card h2{font-size:3.25rem;margin:10px 0 8px;letter-spacing:-.05em}.daily-card .button{margin-top:20px}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin:45px 0 18px}.section-heading h2,.page-head h1{margin:8px 0 0;font-size:clamp(2rem,4vw,4.2rem);line-height:.96;letter-spacing:-.055em}.section-heading p,.page-head p{color:var(--muted)}
.course-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.course-card{--course-colour:var(--cyan);position:relative;overflow:hidden;padding:26px;border-radius:28px;background:radial-gradient(340px 170px at 100% 0%,color-mix(in srgb,var(--course-colour) 16%,transparent),transparent 72%),linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.03));border:1px solid color-mix(in srgb,var(--course-colour) 28%,transparent);box-shadow:0 26px 80px rgba(0,0,0,.25)}.course-card.locked{opacity:.6;filter:saturate(.55)}.course-head,.course-foot{display:flex;justify-content:space-between;align-items:center;gap:12px}.course-head span{color:var(--course-colour);font-size:.74rem;font-weight:900;text-transform:uppercase;letter-spacing:.11em}.course-head b{font-size:.8rem;color:var(--muted)}.course-card h3{font-size:2rem;margin:28px 0 7px}.course-card p{color:var(--muted)}.course-progress{height:7px;margin:28px 0 14px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}.course-progress span{display:block;height:100%;border-radius:inherit;background:var(--course-colour);box-shadow:0 0 20px var(--course-colour)}.course-foot strong{font-size:.82rem}
.dashboard-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(260px,.6fr);gap:18px;margin-top:18px}.continue-card,.metrics-card{border-radius:28px;padding:24px}.card-title{display:flex;align-items:center;justify-content:space-between}.continue-content{display:grid;grid-template-columns:210px 1fr;gap:22px;align-items:center;margin-top:18px}.continue-content img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:18px;border:1px solid rgba(89,221,255,.18)}.continue-content span{color:var(--cyan);font-size:.76rem;font-weight:850;text-transform:uppercase}.continue-content h3{font-size:1.8rem;margin:8px 0}.continue-content p{color:var(--muted);margin-bottom:18px}.metrics-card{display:grid;align-content:start;gap:0}.metric-row{display:flex;align-items:center;justify-content:space-between;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.08)}.metric-row:last-child{border:0}.metric-row span{color:var(--muted)}.metric-row strong{font-size:1.8rem}
.recommendation-row{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(260px,1fr);gap:15px;overflow:auto;padding:1px 1px 14px;scroll-snap-type:x mandatory}.recommendation-row .topic-tile{scroll-snap-align:start}

/* Library */
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:25px}.page-head p{margin-top:12px;line-height:1.6}.course-switch{display:flex;padding:4px;border-radius:15px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08)}.course-switch button{border:0;background:transparent;padding:10px 14px;border-radius:11px;color:var(--muted);font-weight:800}.course-switch button.active{background:rgba(89,221,255,.12);color:#fff}.filter-bar{padding:14px;border-radius:20px;display:flex;gap:12px;align-items:center;margin-bottom:18px}.filter-bar select{min-height:44px;padding:0 40px 0 13px;border-radius:13px;border:1px solid rgba(255,255,255,.09);background:#07111c;color:#e9f6fc}.filter-bar span{margin-left:auto;color:var(--muted);font-size:.85rem}.library-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.topic-tile{overflow:hidden;border-radius:23px;background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.03));border:1px solid rgba(255,255,255,.085);transition:transform .2s ease,border-color .2s ease;cursor:pointer}.topic-tile:hover{transform:translateY(-3px);border-color:rgba(89,221,255,.28)}.topic-tile.complete{border-color:rgba(98,235,167,.24)}.topic-image{position:relative;background:#000;aspect-ratio:16/9;overflow:hidden}.topic-image img{width:100%;height:100%;object-fit:cover}.topic-image>span{position:absolute;left:10px;top:10px;padding:6px 9px;border-radius:999px;background:rgba(3,8,14,.8);border:1px solid rgba(255,255,255,.16);font-size:.7rem;font-weight:900}.bookmark-button{position:absolute;right:10px;top:10px;width:36px;height:36px;border-radius:12px;background:rgba(3,8,14,.82);border:1px solid rgba(255,255,255,.14);font-size:1.2rem}.bookmark-button.active{color:#ff7590;border-color:rgba(255,71,98,.35)}.topic-copy{padding:17px}.topic-copy small{color:var(--cyan);font-size:.7rem;text-transform:uppercase;font-weight:850;letter-spacing:.08em}.topic-copy h3{font-size:1.15rem;line-height:1.15;margin:8px 0 18px}.topic-copy>div{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:.75rem}.topic-copy b{color:#dff8ff}.empty-state{grid-column:1/-1;padding:50px;border-radius:24px;text-align:center;color:var(--muted);border:1px dashed rgba(255,255,255,.14)}

/* Sprint / progress / account */
.sprint-hero{display:grid;grid-template-columns:190px 1fr;align-items:center;gap:28px;padding:34px;border-radius:30px;background:radial-gradient(400px 250px at 0% 50%,rgba(166,108,255,.17),transparent 72%),linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.035))}.sprint-number{width:160px;aspect-ratio:1;border-radius:50%;display:grid;place-items:center;font-size:4rem;font-weight:950;background:radial-gradient(circle,#0e1825 52%,transparent 54%),conic-gradient(var(--violet),var(--cyan),var(--violet));box-shadow:0 0 70px rgba(166,108,255,.22)}.sprint-hero h2{font-size:clamp(2rem,4vw,4rem);margin:8px 0;letter-spacing:-.05em}.sprint-hero p{color:var(--muted);max-width:70ch;line-height:1.6}.sprint-hero .button{margin-top:20px}.progress-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:13px}.progress-grid article{padding:20px;border-radius:22px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08)}.progress-grid span,.progress-grid small{color:var(--muted)}.progress-grid strong{display:block;font-size:2rem;margin:9px 0}.progress-grid article>div,.progress-line>div{height:7px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}.progress-grid i,.progress-line i{display:block;height:100%;background:linear-gradient(90deg,var(--cyan),var(--violet));border-radius:inherit}.progress-grid small{display:block;margin-top:10px;font-size:.72rem}.progress-table{padding:24px;border-radius:28px;margin-top:18px}.progress-table h2{margin:0 0 14px}.progress-line{display:grid;grid-template-columns:220px 1fr 55px;gap:16px;align-items:center;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.07)}.progress-line:last-child{border:0}.progress-line span{color:#dceaf1}.progress-line b{text-align:right}.account-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.account-card{padding:30px;border-radius:30px}.avatar-large{width:80px;height:80px;border-radius:26px;display:grid;place-items:center;background:linear-gradient(135deg,var(--cyan),var(--violet));color:#061018;font-size:2rem;font-weight:950}.account-card h2{font-size:2rem;margin:18px 0 6px}.account-card>p{color:var(--muted)}.account-tags{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0}.account-tags span{padding:8px 10px;border-radius:999px;background:rgba(89,221,255,.075);border:1px solid rgba(89,221,255,.15);font-size:.74rem}.account-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}

/* Slide viewer */
.modal-open{overflow:hidden}.slide-modal{position:fixed;inset:0;z-index:1000}.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.82);backdrop-filter:blur(18px)}.viewer{position:relative;z-index:1;width:min(1500px,calc(100% - 32px));height:calc(100vh - 32px);margin:16px auto;border-radius:30px;overflow:hidden;background:#07101a;border:1px solid rgba(89,221,255,.22);box-shadow:0 40px 130px rgba(0,0,0,.7);display:grid;grid-template-rows:auto minmax(0,1fr) auto}.viewer header{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:17px 20px;border-bottom:1px solid rgba(255,255,255,.08)}.viewer header span{color:var(--cyan);font-size:.73rem;text-transform:uppercase;font-weight:850}.viewer header h2{margin:5px 0 0;font-size:1.25rem}.viewer-stage{min-height:0;display:grid;place-items:center;overflow:auto;padding:14px;background:#000}.viewer-stage img{max-height:100%;max-width:100%;object-fit:contain}.viewer footer{display:grid;grid-template-columns:auto minmax(260px,1fr) auto;gap:16px;align-items:center;padding:14px 18px;border-top:1px solid rgba(255,255,255,.08)}.viewer-actions,.viewer-navigation{display:flex;align-items:center;gap:9px}.slide-notes{display:grid;gap:5px}.slide-notes span{font-size:.7rem;color:var(--muted)}.slide-notes textarea{width:100%;min-height:48px;max-height:80px;resize:vertical;border-radius:13px;border:1px solid rgba(255,255,255,.10);background:#040911;color:#fff;padding:10px;outline:0}.viewer-navigation span{font-size:.8rem;color:var(--muted);white-space:nowrap}.toast{position:fixed;right:22px;bottom:22px;z-index:1200;padding:13px 17px;border-radius:15px;background:#10221b;border:1px solid rgba(98,235,167,.25);box-shadow:0 18px 55px rgba(0,0,0,.4);font-weight:800}.toast[data-type="error"]{background:#281016;border-color:rgba(255,71,98,.25)}

@keyframes float{50%{transform:translateY(-7px) rotate(4deg)}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
@media(max-width:1180px){.library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.progress-grid{grid-template-columns:repeat(3,1fr)}.welcome-grid{grid-template-columns:1fr}.daily-card{min-height:220px}.viewer footer{grid-template-columns:1fr}.slide-notes{order:3}}
@media(max-width:900px){.auth-page{grid-template-columns:1fr}.auth-visual{display:none}.app-layout{grid-template-columns:1fr}.sidebar{position:fixed;left:0;top:0;transform:translateX(-105%);transition:transform .25s ease;width:280px}.sidebar.open{transform:none}.mobile-menu{display:grid}.profile-button div{display:none}.topbar{padding:0 16px}.main-content{padding:24px 16px 100px}.mobile-tabs{position:fixed;z-index:55;display:grid;grid-template-columns:repeat(4,1fr);left:10px;right:10px;bottom:10px;padding:7px;border-radius:20px;background:rgba(5,12,20,.9);border:1px solid rgba(255,255,255,.10);backdrop-filter:blur(22px);box-shadow:0 22px 70px rgba(0,0,0,.45)}.mobile-tabs button{border:0;background:transparent;color:var(--muted);display:grid;gap:2px;place-items:center;padding:6px;border-radius:13px}.mobile-tabs button.active{background:rgba(89,221,255,.09);color:#fff}.mobile-tabs span{font-size:1.05rem}.mobile-tabs small{font-size:.65rem}.course-grid,.dashboard-grid,.account-grid{grid-template-columns:1fr}.continue-content{grid-template-columns:160px 1fr}.page-head{align-items:flex-start;flex-direction:column}.progress-line{grid-template-columns:150px 1fr 45px}}
@media(max-width:640px){.auth-panel{padding:24px 14px}.auth-card{padding:24px;border-radius:26px}.auth-card h1{font-size:2.35rem}.auth-support{flex-direction:column}.welcome-card{align-items:flex-start;flex-direction:column;padding:23px}.welcome-card h1{font-size:3.45rem}.progress-orbit{width:125px}.daily-card{padding:23px}.section-heading{align-items:flex-start;flex-direction:column;margin-top:36px}.library-grid{grid-template-columns:1fr}.filter-bar{align-items:stretch;flex-direction:column}.filter-bar span{margin-left:0}.continue-content{grid-template-columns:1fr}.continue-content img{max-height:210px}.sprint-hero{grid-template-columns:1fr;padding:24px}.sprint-number{width:125px;font-size:3rem}.progress-grid{grid-template-columns:repeat(2,1fr)}.progress-line{grid-template-columns:1fr 50px}.progress-line>div{grid-column:1/-1;grid-row:2}.viewer{width:100%;height:100vh;margin:0;border-radius:0}.viewer header{padding:12px}.viewer footer{padding:10px}.viewer-actions,.viewer-navigation{overflow:auto}.viewer .button{white-space:nowrap;min-height:42px}.global-search{padding:0 10px}.global-search input{font-size:.84rem}}


/* V2.1 student viewer upgrade: canonical-content status, orientation and annotations */
.student-tools-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;padding:16px;margin:18px 0 10px}.student-tools-strip article{display:flex;gap:12px;align-items:center;padding:14px 16px;border-radius:18px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08)}.student-tools-strip span{font-size:1.4rem}.student-tools-strip b{display:block}.student-tools-strip small{display:block;color:var(--muted);margin-top:2px}.viewer{grid-template-rows:auto auto minmax(0,1fr) auto}.viewer-header-actions{display:flex;align-items:center;gap:10px}.button.compact{min-height:38px;padding:9px 12px;font-size:.76rem}.viewer-toolbar{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:10px 14px;background:linear-gradient(90deg,rgba(89,221,255,.08),rgba(166,108,255,.06));border-bottom:1px solid rgba(255,255,255,.08)}.tool-group{display:flex;align-items:center;gap:7px;flex-wrap:wrap}.tool-button{min-height:36px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.055);color:#eaf7ff;border-radius:11px;padding:8px 10px;font-weight:850;font-size:.72rem;letter-spacing:.01em;cursor:pointer}.tool-button:hover,.tool-button.active{border-color:rgba(89,221,255,.48);background:rgba(89,221,255,.14);color:#fff}.tool-button.danger:hover{border-color:rgba(255,71,98,.55);background:rgba(255,71,98,.12)}.zoom-readout{min-width:50px;text-align:center;color:var(--cyan);font-weight:950;font-size:.76rem}.viewer-stage{position:relative;align-items:center;justify-items:center;touch-action:pan-x pan-y}.viewer-canvas-wrap{position:relative;display:inline-grid;place-items:center;max-width:100%;max-height:100%;transform:rotate(var(--viewer-rotation,0deg)) scale(var(--viewer-zoom,1));transform-origin:center center;transition:transform .18s ease}.viewer-canvas-wrap img{grid-area:1/1;display:block;max-width:min(100%,calc(100vw - 64px));max-height:calc(100vh - 250px);height:auto;object-fit:contain;user-select:none}.viewer-canvas-wrap canvas{grid-area:1/1;width:100%;height:100%;max-width:min(100%,calc(100vw - 64px));max-height:calc(100vh - 250px);pointer-events:none;touch-action:none}.viewer-canvas-wrap canvas.annotating{pointer-events:auto;cursor:crosshair}.viewer:fullscreen{width:100vw;height:100vh;margin:0;border-radius:0}.viewer:fullscreen .viewer-canvas-wrap img,.viewer:fullscreen .viewer-canvas-wrap canvas{max-width:calc(100vw - 32px);max-height:calc(100vh - 210px)}
@media(max-width:900px){.student-tools-strip{grid-template-columns:1fr}.viewer-toolbar{max-height:144px;overflow:auto}.tool-group{width:100%}.tool-button{flex:1 1 auto}.viewer-canvas-wrap img,.viewer-canvas-wrap canvas{max-width:calc(100vw - 24px);max-height:calc(100vh - 310px)}}
@media(max-width:640px){.viewer-header-actions .button{display:none}.viewer-toolbar{padding:8px}.tool-button{min-height:34px;padding:7px 8px;font-size:.68rem}.viewer-canvas-wrap img,.viewer-canvas-wrap canvas{max-width:calc(100vw - 16px);max-height:calc(100vh - 330px)}}

/* V2.3 — full 378-slide student-ready experience with seven clean-master rebuilds */
.filter-bar{
  display:grid;
  grid-template-columns:repeat(4,minmax(145px,1fr)) auto;
  align-items:center;
  gap:10px;
}
.filter-bar select{
  width:100%;
  min-width:0;
}
.filter-bar>span{
  margin-left:0;
  white-space:nowrap;
  justify-self:end;
  padding:0 5px;
}
.confidence-badge{
  position:absolute;
  left:10px;
  bottom:10px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  min-height:27px;
  padding:5px 9px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(3,8,14,.86);
  box-shadow:0 8px 24px rgba(0,0,0,.32);
  color:#fff;
  font-style:normal;
  font-size:.65rem;
  font-weight:900;
  letter-spacing:.035em;
  text-transform:uppercase;
  backdrop-filter:blur(10px);
}
.confidence-badge[data-confidence="again"]{color:#ffd6dc;border-color:rgba(255,71,98,.5);background:rgba(76,12,26,.9)}
.confidence-badge[data-confidence="hard"]{color:#fff0bd;border-color:rgba(255,215,102,.48);background:rgba(69,48,8,.9)}
.confidence-badge[data-confidence="good"]{color:#dfffee;border-color:rgba(98,235,167,.45);background:rgba(10,56,38,.9)}
.confidence-badge[data-confidence="easy"]{color:#e7e3ff;border-color:rgba(166,108,255,.48);background:rgba(41,24,75,.9)}
.confidence-summary{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
  margin-top:18px;
  padding:16px;
  border-radius:24px;
}
.confidence-summary article{
  padding:17px 19px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.035);
}
.confidence-summary article span{
  display:block;
  color:var(--muted);
  font-size:.72rem;
  font-weight:900;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.confidence-summary article strong{display:block;margin-top:7px;font-size:1.8rem}
.confidence-summary article[data-confidence="again"]{border-color:rgba(255,71,98,.22)}
.confidence-summary article[data-confidence="hard"]{border-color:rgba(255,215,102,.22)}
.confidence-summary article[data-confidence="good"]{border-color:rgba(98,235,167,.22)}
.confidence-summary article[data-confidence="easy"]{border-color:rgba(166,108,255,.24)}

/* The viewer intentionally reserves most of the viewport for the slide itself. */
.viewer{
  width:min(1660px,calc(100% - 20px));
  height:calc(100dvh - 20px);
  margin:10px auto;
  border-radius:24px;
  grid-template-rows:auto auto minmax(0,1fr) auto !important;
}
.viewer-header{
  min-width:0;
  padding:12px 16px !important;
  background:linear-gradient(90deg,rgba(89,221,255,.045),rgba(166,108,255,.03));
}
.viewer-title{min-width:0}
.viewer-title span{
  display:block;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.viewer-title h2{
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  font-size:clamp(.98rem,1.5vw,1.22rem) !important;
}
.viewer-header-actions{flex:0 0 auto}
.viewer-toolbar{
  display:grid !important;
  grid-template-columns:max-content minmax(0,1fr);
  gap:10px;
  align-items:center;
  padding:8px 12px !important;
  overflow:hidden;
  flex-wrap:nowrap !important;
}
.tool-group{
  display:flex;
  flex-wrap:nowrap !important;
  align-items:center;
  gap:6px;
  min-width:0;
}
.viewer-orientation-tools{overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin}
.viewer-annotation-tools{
  justify-content:flex-end;
  overflow-x:auto;
  overscroll-behavior-x:contain;
  scrollbar-width:thin;
  padding-bottom:1px;
}
.tool-button{
  flex:0 0 auto;
  min-height:34px !important;
  padding:7px 9px !important;
  white-space:nowrap;
}
.tool-button:focus-visible,.confidence-button:focus-visible,.colour-control:focus-within,.size-control:focus-within{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}
.colour-control,.size-control{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:6px;
  min-height:34px;
  padding:5px 8px;
  border-radius:11px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.045);
  color:#dcecf5;
  font-size:.68rem;
  font-weight:850;
}
.colour-control input{
  width:25px;
  height:22px;
  padding:0;
  border:0;
  border-radius:6px;
  background:transparent;
  cursor:pointer;
}
.size-control input{width:78px;accent-color:var(--cyan);cursor:pointer}
.zoom-readout{flex:0 0 auto}
.viewer-stage{
  position:relative;
  min-width:0;
  min-height:0;
  display:grid !important;
  place-items:safe center !important;
  overflow:auto !important;
  overscroll-behavior:contain;
  padding:18px !important;
  background:
    radial-gradient(720px 360px at 50% 50%,rgba(19,45,65,.35),transparent 72%),
    #020407 !important;
  touch-action:pan-x pan-y;
  scrollbar-color:rgba(89,221,255,.35) rgba(255,255,255,.03);
}
.viewer-stage.annotation-active{touch-action:none;cursor:crosshair}
.viewer-transform-space{
  position:relative;
  flex:0 0 auto;
  min-width:1px;
  min-height:1px;
}
.viewer-canvas-wrap{
  position:absolute !important;
  left:50%;
  top:50%;
  display:grid !important;
  place-items:stretch !important;
  max-width:none !important;
  max-height:none !important;
  transform-origin:center center !important;
  transition:transform .14s ease;
  will-change:transform;
  background:#000;
  box-shadow:0 18px 65px rgba(0,0,0,.58),0 0 0 1px rgba(255,255,255,.07);
}
.viewer-canvas-wrap img,.viewer-canvas-wrap canvas{
  grid-area:1/1;
  display:block;
  width:100% !important;
  height:100% !important;
  min-width:0;
  min-height:0;
  max-width:none !important;
  max-height:none !important;
  object-fit:fill !important;
  border:0;
}
.viewer-canvas-wrap img{user-select:none;-webkit-user-drag:none}
.viewer-canvas-wrap canvas{pointer-events:none;touch-action:none}
.viewer-canvas-wrap canvas.annotating{pointer-events:auto;cursor:crosshair}
.viewer-footer,.viewer footer{
  display:block !important;
  padding:9px 13px 8px !important;
  background:rgba(5,12,20,.96);
  border-top:1px solid rgba(255,255,255,.08);
}
.viewer-footer-grid{
  display:grid;
  grid-template-columns:auto minmax(320px,1fr) auto;
  align-items:center;
  gap:12px;
}
.viewer-actions,.viewer-navigation{
  display:flex;
  align-items:center;
  gap:7px;
  min-width:0;
}
.viewer-footer .button{
  min-height:38px;
  padding:0 12px;
  border-radius:12px;
  font-size:.75rem;
  white-space:nowrap;
}
.viewer-navigation{justify-content:flex-end}
.viewer-navigation>span{
  min-width:112px;
  text-align:center;
  font-variant-numeric:tabular-nums;
}
.confidence-control{
  display:flex;
  justify-content:center;
  align-items:center;
  gap:10px;
  min-width:0;
}
.confidence-control>span{
  flex:0 0 auto;
  color:var(--muted);
  font-size:.68rem;
  font-weight:900;
  letter-spacing:.055em;
  text-transform:uppercase;
}
.confidence-control>div{
  display:flex;
  min-width:0;
  padding:3px;
  border-radius:13px;
  background:rgba(255,255,255,.035);
  border:1px solid rgba(255,255,255,.07);
}
.confidence-button{
  min-height:31px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:5px;
  padding:0 9px;
  border:0;
  border-radius:9px;
  background:transparent;
  color:var(--muted);
  font-size:.7rem;
  font-weight:850;
  white-space:nowrap;
}
.confidence-button:hover,.confidence-button.active{background:rgba(89,221,255,.1);color:#fff}
.confidence-button[data-confidence-value="again"].active{background:rgba(255,71,98,.16);color:#ffdce1}
.confidence-button[data-confidence-value="hard"].active{background:rgba(255,215,102,.16);color:#fff1bd}
.confidence-button[data-confidence-value="good"].active{background:rgba(98,235,167,.16);color:#dcffec}
.confidence-button[data-confidence-value="easy"].active{background:rgba(166,108,255,.17);color:#eee7ff}
.slide-notes{
  display:block !important;
  margin-top:7px;
  border-top:1px solid rgba(255,255,255,.06);
}
.slide-notes summary{
  display:flex;
  align-items:center;
  gap:8px;
  min-height:29px;
  color:#dcecf4;
  cursor:pointer;
  font-size:.72rem;
  font-weight:850;
  list-style:none;
}
.slide-notes summary::-webkit-details-marker{display:none}
.slide-notes summary::before{content:'＋';color:var(--cyan);font-size:.82rem}
.slide-notes[open] summary::before{content:'−'}
.slide-notes summary span{margin-left:auto;color:var(--muted);font-weight:650}
.slide-notes textarea{
  min-height:52px !important;
  max-height:100px !important;
  margin:2px 0 5px;
}
.viewer-shortcuts{
  display:block;
  margin-top:1px;
  color:#6f8493;
  text-align:center;
  font-size:.61rem;
  line-height:1.25;
}
.viewer:fullscreen{
  width:100vw !important;
  height:100dvh !important;
  margin:0 !important;
  border:0 !important;
  border-radius:0 !important;
}
.toast{max-width:min(420px,calc(100vw - 32px))}

@media(max-width:1260px){
  .filter-bar{grid-template-columns:repeat(2,minmax(145px,1fr));}
  .filter-bar>span{grid-column:1/-1;justify-self:start}
  .viewer-toolbar{grid-template-columns:1fr}
  .viewer-orientation-tools,.viewer-annotation-tools{justify-content:flex-start;overflow-x:auto}
  .viewer-footer-grid{grid-template-columns:1fr auto}
  .confidence-control{grid-column:1/-1;grid-row:2;justify-content:flex-start}
  .viewer-navigation{justify-content:flex-end}
}
@media(max-width:900px){
  .confidence-summary{grid-template-columns:repeat(2,minmax(0,1fr))}
  .viewer{width:100%;height:100dvh;margin:0;border-radius:0;border-left:0;border-right:0}
  .viewer-header{padding:9px 11px !important}
  .viewer-header-actions .button{display:inline-flex}
  .viewer-toolbar{max-height:none !important;overflow:hidden !important;padding:6px 8px !important}
  .viewer-stage{padding:10px !important}
  .viewer-footer-grid{grid-template-columns:1fr}
  .viewer-actions,.viewer-navigation{justify-content:center;overflow-x:auto}
  .confidence-control{grid-column:auto;grid-row:auto;justify-content:center;overflow-x:auto}
  .viewer-shortcuts{display:none}
}
@media(max-width:640px){
  .filter-bar{grid-template-columns:1fr !important;align-items:stretch}
  .filter-bar>span{grid-column:auto}
  .confidence-summary{grid-template-columns:repeat(2,minmax(0,1fr));padding:10px;gap:8px}
  .confidence-summary article{padding:13px}
  .viewer{grid-template-rows:auto auto minmax(0,1fr) auto !important}
  .viewer-title span{font-size:.62rem !important}
  .viewer-title h2{font-size:.93rem !important}
  .viewer-header-actions .button{display:none}
  .viewer-toolbar{gap:5px}
  .tool-group{gap:5px}
  .tool-button{min-height:32px !important;padding:6px 8px !important;font-size:.66rem !important}
  .colour-control,.size-control{min-height:32px;font-size:.64rem}
  .size-control input{width:62px}
  .viewer-stage{padding:7px !important}
  .viewer-footer,.viewer footer{padding:7px 8px !important}
  .viewer-footer .button{min-height:34px;padding:0 9px;font-size:.68rem}
  .confidence-control{display:block;overflow:visible}
  .confidence-control>span{display:none}
  .confidence-control>div{display:grid;grid-template-columns:repeat(4,1fr);width:100%}
  .confidence-button{padding:0 5px;font-size:.64rem}
  .viewer-navigation>span{min-width:92px;font-size:.68rem}
  .slide-notes{margin-top:5px}
}
@media(max-height:700px){
  .viewer-header{padding-top:7px !important;padding-bottom:7px !important}
  .viewer-title h2{margin-top:2px !important}
  .viewer-toolbar{padding-top:5px !important;padding-bottom:5px !important}
  .tool-button,.colour-control,.size-control{min-height:30px !important}
  .viewer-footer,.viewer footer{padding-top:5px !important;padding-bottom:5px !important}
  .slide-notes,.viewer-shortcuts{display:none !important}
}