/* Buy, sign-in, account and admin pages. The same tokens as the course
   (assets/course/course.css), so the two look like one site in light and dark. */
:root{
  --bg:#F2F3F9; --panel:#FFFFFF; --panel2:#F6F7FC; --ink:#141633; --muted:#585C7C; --line:#DCDFEC;
  --accent:#2F4CE0; --accent-soft:#E7EBFD; --accent-ink:#FFFFFF; --pink:#B3256B; --gold:#9A6B00;
  --ok:#0C8A5B; --ok-soft:#E1F3EA; --bad:#C7352B; --bad-soft:#FBE7E5; --warn:#9A6B00; --warn-soft:#F7EED9;
  --hero-bg:#0D1030; --hero-bg2:#1B1F55; --hero-ink:#EFF1FF; --hero-muted:#A9AEDA;
  --shadow:0 1px 2px rgba(20,22,51,.05),0 10px 30px rgba(20,22,51,.07);
  --f-display:"Bricolage Grotesque","Atkinson Hyperlegible",system-ui,sans-serif;
  --f-body:"Atkinson Hyperlegible","Noto Sans Devanagari",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --bg:#0A0D1E; --panel:#12162C; --panel2:#171C36; --ink:#E8EAF8; --muted:#9CA0C2; --line:#262B4B;
  --accent:#7D93FF; --accent-soft:#1C2452; --accent-ink:#0A0D1E; --pink:#FF7EB6; --gold:#F5C542;
  --ok:#3DD39A; --ok-soft:#123528; --bad:#FF6B57; --bad-soft:#3C1E1E; --warn:#F5C542; --warn-soft:#3A3118;
  --shadow:0 1px 2px rgba(0,0,0,.35),0 12px 32px rgba(0,0,0,.3); color-scheme:dark } }
:root[data-theme="dark"]{
  --bg:#0A0D1E; --panel:#12162C; --panel2:#171C36; --ink:#E8EAF8; --muted:#9CA0C2; --line:#262B4B;
  --accent:#7D93FF; --accent-soft:#1C2452; --accent-ink:#0A0D1E; --pink:#FF7EB6; --gold:#F5C542;
  --ok:#3DD39A; --ok-soft:#123528; --bad:#FF6B57; --bad-soft:#3C1E1E; --warn:#F5C542; --warn-soft:#3A3118; color-scheme:dark }

*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--accent)}
h1,h2,h3{font-family:var(--f-display);margin:0;line-height:1.15;text-wrap:balance}
h1{font-size:clamp(1.7rem,4vw,2.4rem);font-weight:800;letter-spacing:-.025em}
h2{font-size:1.3rem;font-weight:800;letter-spacing:-.015em}
h3{font-size:1.05rem}
p{margin:0}
.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums}
.eyebrow{font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;font-weight:700;color:var(--accent);margin:0}
.muted{color:var(--muted)}
.note{color:var(--muted);font-size:.92rem}

/* top bar, as in the course */
.top{position:sticky;top:0;z-index:30;background:var(--bg);background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.top-in{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:14px;padding:9px max(16px,env(safe-area-inset-right,0px)) 9px max(16px,env(safe-area-inset-left,0px))}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit;min-width:0}
.brand svg{width:36px;height:36px;flex:none}
.brand b{font-family:var(--f-display);font-weight:800;font-size:1.12rem;letter-spacing:-.015em;display:block;line-height:1.1;white-space:nowrap}
.brand small{color:var(--muted);font-size:.74rem;display:block;white-space:nowrap}
.topnav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap;justify-content:flex-end}
.topnav a{text-decoration:none;color:var(--ink);font-weight:700;font-size:.88rem;padding:7px 13px;border-radius:999px;white-space:nowrap}
.topnav a:hover{background:var(--panel2)}
.topnav a[aria-current="page"]{background:var(--ink);color:var(--bg)}
.topnav a.nav-buy{background:var(--accent);color:var(--accent-ink)}
@media (max-width:560px){ .brand small{display:none} .topnav a{padding:6px 10px;font-size:.84rem} }
@media (max-width:420px){ .brand span{display:none} }

/* page */
.page{width:100%;max-width:880px;margin:0 auto;padding:28px max(16px,env(safe-area-inset-right,0px)) 48px max(16px,env(safe-area-inset-left,0px));display:flex;flex-direction:column;gap:22px;flex:1}
.page.wide{max-width:1200px}
.page.narrow{max-width:460px}
.head{display:flex;flex-direction:column;gap:8px}
.head p{color:var(--muted);max-width:66ch}
.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px;min-width:0}
.card.tight{padding:16px 18px}
.step{display:grid;grid-template-columns:34px minmax(0,1fr);gap:14px}
.step>i{width:34px;height:34px;border-radius:11px;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font:800 1rem var(--f-mono);font-style:normal}
.step>div{display:flex;flex-direction:column;gap:12px;min-width:0}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.row.between{justify-content:space-between}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:14px}

/* buttons */
.btn{border:1px solid var(--line);background:var(--panel);padding:9px 16px;border-radius:11px;cursor:pointer;font:inherit;font-weight:700;font-size:.94rem;line-height:1.2;display:inline-flex;align-items:center;justify-content:center;gap:7px;text-decoration:none;color:var(--ink)}
.btn:hover{border-color:var(--muted)}
.btn.pri{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.ok{background:var(--ok);border-color:var(--ok);color:#fff}
.btn.bad{color:var(--bad);border-color:color-mix(in srgb,var(--bad) 45%,var(--line))}
.btn.big{padding:13px 22px;font-size:1.02rem;border-radius:14px}
.btn.sm{padding:5px 11px;font-size:.84rem;border-radius:9px}
.btn:disabled{opacity:.55;cursor:not-allowed}
.linkbtn{border:0;background:none;padding:0;font:inherit;color:var(--accent);font-weight:700;cursor:pointer;text-decoration:underline}

/* forms */
form{display:flex;flex-direction:column;gap:14px;margin:0}
form.inline{flex-direction:row;flex-wrap:wrap;align-items:center;gap:8px}
label{display:flex;flex-direction:column;gap:5px;font-weight:700;font-size:.92rem}
label .req,label .opt{font-weight:400;color:var(--muted);font-size:.8rem}
input[type=text],input[type=email],input[type=tel],input[type=password],input[type=number],input[type=date],input[type=search],input:not([type]),select,textarea{
  font:inherit;font-weight:400;color:var(--ink);background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:10px 12px;width:100%;min-width:0}
textarea{min-height:90px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}
input[type=file]{font:inherit;font-weight:400;font-size:.9rem;max-width:100%}
.check{flex-direction:row;align-items:flex-start;gap:10px;font-weight:400}
.check input{margin-top:.25em;width:18px;height:18px;flex:none}
fieldset{border:0;margin:0;padding:0;min-width:0}
legend{font-weight:700;font-size:.92rem;padding:0;margin-bottom:6px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips label{flex-direction:row;gap:0;font-weight:700}
.chips input{position:absolute;opacity:0;pointer-events:none}
.chips span{padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--panel2);cursor:pointer}
.chips input:checked+span{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.chips input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.err{color:var(--bad);font-weight:700;font-size:.9rem}

/* messages */
.flash{border-radius:12px;padding:11px 14px;border:1px solid var(--line);background:var(--panel);font-size:.95rem}
.flash.ok{background:var(--ok-soft);border-color:color-mix(in srgb,var(--ok) 40%,transparent)}
.flash.error{background:var(--bad-soft);border-color:color-mix(in srgb,var(--bad) 40%,transparent)}
.flash.info{background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 35%,transparent)}
.status{display:flex;gap:14px;align-items:flex-start;padding:16px 18px;border-radius:16px;border:1px solid var(--line);background:var(--panel2)}
.status>i{width:12px;height:12px;border-radius:50%;margin-top:.45em;flex:none;background:var(--muted)}
.status.ok{background:var(--ok-soft)} .status.ok>i{background:var(--ok)}
.status.warn{background:var(--warn-soft)} .status.warn>i{background:var(--warn)}
.status.bad{background:var(--bad-soft)} .status.bad>i{background:var(--bad)}
.status b{display:block;font-size:1.05rem}
.status p{color:var(--ink)}

/* buy page */
.buyhero{border-radius:24px;padding:28px;color:var(--hero-ink);background:radial-gradient(700px 360px at 85% 10%,var(--hero-bg2),transparent 65%),var(--hero-bg);display:grid;grid-template-columns:minmax(0,1fr) auto;gap:22px;align-items:end}
.buyhero .eyebrow{color:var(--hero-muted)}
.buyhero p{color:var(--hero-muted);max-width:56ch}
.buyhero .price{display:flex;flex-direction:column;align-items:flex-end;gap:2px;text-align:right}
.buyhero .price b{font-family:var(--f-display);font-weight:800;font-size:3.2rem;letter-spacing:-.04em;line-height:1;background:linear-gradient(92deg,#7D93FF,#FF7EB6 55%,#F6C445);-webkit-background-clip:text;background-clip:text;color:transparent}
.buyhero .price span{color:var(--hero-ink);font-weight:700}
@media (max-width:640px){ .buyhero{grid-template-columns:minmax(0,1fr);padding:22px} .buyhero .price{align-items:flex-start;text-align:left} }
.gets{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));gap:10px 18px}
.gets li{display:grid;grid-template-columns:3.6ch minmax(0,1fr);gap:10px;align-items:baseline;font-size:.94rem}
.gets b{font-family:var(--f-display);font-weight:800;font-size:1.3rem;color:var(--accent);text-align:right}
.gets li:nth-child(2) b{color:var(--pink)} .gets li:nth-child(3) b{color:var(--gold)} .gets li:nth-child(4) b{color:var(--ok)}
.paygrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));gap:14px}
.paycard{border:1px solid var(--line);border-radius:16px;padding:16px;background:var(--panel2);display:flex;flex-direction:column;gap:10px;align-items:center;text-align:center}
/* Large, on white, never smoothed: a QR must stay sharp to scan from a screen. */
.paycard .qr{display:block;width:100%;max-width:300px}
.paycard img{display:block;width:100%;height:auto;background:#fff;border-radius:12px;padding:10px}
.payid{display:flex;flex-direction:column;gap:1px}
.payid span{font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-weight:700}
.payid b{font-size:1.1rem}
.payid small{color:var(--muted)}
.paybank{font-size:.92rem;text-align:left;align-self:stretch}
.amount{display:inline-flex;gap:8px;align-items:baseline;padding:6px 12px;border-radius:10px;background:var(--accent-soft);font-weight:700}
.amount b{font-family:var(--f-display);font-size:1.25rem}

/* tables (admin, account) */
.tablewrap{overflow-x:auto;margin:0 -4px;padding:0 4px}
table{border-collapse:collapse;width:100%;font-size:.92rem}
th{font-size:.72rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);text-align:left;padding:6px 10px 6px 0;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:10px 10px 10px 0;border-bottom:1px solid var(--line);vertical-align:top}
tr:last-child td{border-bottom:0}
td .sub{display:block;color:var(--muted);font-size:.84rem}
.pill{display:inline-block;padding:2px 9px;border-radius:999px;font-size:.78rem;font-weight:700;background:var(--panel2);border:1px solid var(--line);white-space:nowrap}
.pill.ok{background:var(--ok-soft);color:var(--ok);border-color:transparent}
.pill.warn{background:var(--warn-soft);color:var(--warn);border-color:transparent}
.pill.bad{background:var(--bad-soft);color:var(--bad);border-color:transparent}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.stats div{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px 16px;display:flex;flex-direction:column}
.stats b{font-family:var(--f-display);font-size:1.8rem;font-weight:800;letter-spacing:-.02em;line-height:1.1}
.stats span{color:var(--muted);font-size:.84rem}
.payq{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) auto;gap:16px;align-items:start;padding:16px 0;border-bottom:1px solid var(--line)}
.payq:last-child{border-bottom:0}
.payq dl{margin:0;display:grid;grid-template-columns:auto minmax(0,1fr);gap:2px 12px;font-size:.92rem}
.payq dt{color:var(--muted)}
.payq dd{margin:0;overflow-wrap:anywhere}
.payq .shot img{display:block;max-width:100%;max-height:240px;border-radius:10px;border:1px solid var(--line)}
.payq .acts{display:flex;flex-direction:column;gap:8px;min-width:210px}
.payq .acts form{gap:6px}
@media (max-width:820px){ .payq{grid-template-columns:minmax(0,1fr)} .payq .acts{min-width:0} }
.secret{font:700 1.3rem var(--f-mono);letter-spacing:.06em;padding:10px 14px;border-radius:12px;background:var(--panel2);border:1px dashed var(--line);user-select:all;overflow-wrap:anywhere}
details.more>summary{cursor:pointer;font-weight:700;color:var(--accent)}
details.more[open]>summary{margin-bottom:12px}

footer{border-top:1px solid var(--line)}
.foot{max-width:1200px;margin:0 auto;display:flex;flex-wrap:wrap;gap:8px 28px;justify-content:space-between;color:var(--muted);font-size:.86rem;padding:20px max(16px,env(safe-area-inset-right,0px)) 30px max(16px,env(safe-area-inset-left,0px))}
.foot b{color:var(--ink)}