:root{
  color-scheme:dark;
  /* UNRLVD: black, red, gray */
  --ground:#0A0A0B; --surface:#141416; --surface-2:#1E1E21; --ink:#F3F3F4; --ink-2:#B9B9BE; --ink-3:#86868C; --line:#2B2B2F;
  --accent:#D91E2E; --accent-ink:#FFFFFF; --accent-soft:#3A1216; --hi:#E8E8EA; --hi-soft:#26262A; --hi-ink:#FF5C68;
  --good:#3DBB7A; --bad:#FF5A62; --bad-soft:#3A1216;
  --c1:#A3121F; --c2:#2A2A2E; --c3:#6E0E17; --c4:#3C3C42; --c5:#C21A29;
  --display:"Big Shoulders Display","Arial Narrow",Impact,sans-serif;
  --body:"IBM Plex Sans",system-ui,-apple-system,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --r:10px;
}
*{box-sizing:border-box}
body{background:var(--ground);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.5}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{max-width:1180px;margin:0 auto;padding-inline:20px}
@media (max-width:520px){.wrap{padding-inline:16px}}

/* top bar */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:var(--surface);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:24px;min-height:60px;flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:8px;background:none;border:0;padding:0;cursor:pointer}
.brand b{font-family:var(--display);font-weight:900;font-size:28px;letter-spacing:.02em;line-height:1}
.brand span{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.nav{display:flex;gap:2px;overflow-x:auto;flex:1;min-width:0;scrollbar-width:none}
.nav button{background:none;border:0;padding:8px 12px;border-radius:8px;cursor:pointer;color:var(--ink-2);font-weight:500;white-space:nowrap}
.nav button:hover{background:var(--surface-2);color:var(--ink)}
.nav button[aria-current="page"]{color:var(--ink);box-shadow:inset 0 -2px 0 var(--accent);border-radius:0}
.who{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2)}
.who img{width:28px;height:28px;border-radius:50%}
@media (max-width:720px){.top .wrap{gap:4px 12px;padding-block:8px}.nav{order:3;flex-basis:100%}.who .nm{display:none}.who{margin-left:auto}}

main{padding-block:28px 64px}
h1,h2,h3{margin:0;text-wrap:balance}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);font-weight:500}
.h-display{font-family:var(--display);font-weight:800;font-size:clamp(34px,5vw,52px);line-height:.95;letter-spacing:.005em;text-transform:uppercase}
.h-sec{font-family:var(--display);font-weight:800;font-size:26px;text-transform:uppercase;letter-spacing:.01em;line-height:1}
.muted{color:var(--ink-3)}
.sec{display:grid;gap:14px;margin-top:36px}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap}

.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--surface);padding:9px 14px;border-radius:8px;cursor:pointer;font-weight:600;font-size:14px;text-decoration:none;color:var(--ink)}
.btn:hover{border-color:var(--ink-3)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{filter:brightness(1.07)}
.btn.ghost{background:none;border-color:transparent;color:var(--ink-2)}
.btn.ghost:hover{background:var(--surface-2)}
.btn.danger{color:var(--bad)}
.btn.danger.armed{background:var(--bad);border-color:var(--bad);color:#fff}
.btn.sm{padding:5px 10px;font-size:13px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r)}

/* hero */
.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:28px;align-items:end}
.hero p{margin:10px 0 0;color:var(--ink-2);max-width:56ch}
.statline{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.stat{padding:14px 16px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat .v{font-family:var(--display);font-weight:800;font-size:34px;line-height:1;font-variant-numeric:tabular-nums}
.stat .l{font-size:12px;color:var(--ink-3);margin-top:4px}
.stat.pts .v{color:var(--hi-ink)}
@media (max-width:820px){.hero{grid-template-columns:1fr}}

.bar{height:6px;background:var(--surface-2);border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--accent);border-radius:99px}

.duo{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:820px){.duo{grid-template-columns:1fr}}
.card{padding:18px;display:grid;gap:8px;align-content:start}
.card h3{font-size:18px;font-weight:600}
.callcard{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start}
.datebox{width:64px;text-align:center;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface)}
.datebox .m{background:var(--accent);color:var(--accent-ink);font-family:var(--mono);font-size:11px;letter-spacing:.12em;padding:3px 0;text-transform:uppercase}
.datebox .d{font-family:var(--display);font-weight:800;font-size:30px;line-height:1.2}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:3px 9px;border-radius:99px;background:var(--surface-2);color:var(--ink-2);white-space:nowrap}
.chip.live{background:var(--accent-soft);color:var(--accent)}
.chip.hi{background:var(--hi-soft);color:var(--hi-ink)}
.chip.bad{background:var(--bad-soft);color:var(--bad)}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}

/* course cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.ccard{display:flex;flex-direction:column;overflow:hidden;cursor:pointer;text-align:left;padding:0;transition:transform .15s,border-color .15s}
.ccard:hover{border-color:var(--ink-3);transform:translateY(-2px)}
.cover{position:relative;height:128px;padding:14px 16px;color:#fff;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden}
.cover::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(-55deg,rgba(255,255,255,.06) 0 14px,transparent 14px 28px)}
.cover .num{font-family:var(--display);font-weight:900;font-size:64px;line-height:.8;opacity:.28;position:absolute;right:12px;bottom:6px}
.cover .lvl{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;position:relative;z-index:1}
.cover .ct{font-family:var(--display);font-weight:800;font-size:28px;line-height:.95;text-transform:uppercase;position:relative;z-index:1;max-width:85%}
.ccard .cb{padding:14px 16px 16px;display:grid;gap:10px;flex:1;align-content:start}
.ccard .tag{color:var(--ink-2);font-size:14px;margin:0}
.meta{display:flex;gap:12px;font-size:12px;color:var(--ink-3);font-family:var(--mono)}
@media (prefers-reduced-motion:reduce){.ccard{transition:none}.ccard:hover{transform:none}}

/* course player */
.crumb{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--ink-3);margin-bottom:14px;flex-wrap:wrap}
.crumb button{background:none;border:0;padding:0;color:var(--ink-2);cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.player{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:22px;align-items:start}
@media (max-width:900px){.player{grid-template-columns:1fr}}
.curric{position:sticky;top:calc(env(safe-area-inset-top,0px) + 76px);max-height:calc(100vh - 100px);overflow:auto}
@media (max-width:900px){.curric{position:static;max-height:none}}
.curric .ch{padding:16px;border-bottom:1px solid var(--line);display:grid;gap:8px}
.mod{border-bottom:1px solid var(--line)}
.mod:last-child{border-bottom:0}
.mod h4{margin:0;padding:12px 16px 6px;font-size:12px;font-family:var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);font-weight:500}
.lrow{display:grid;grid-template-columns:20px 1fr auto;gap:10px;align-items:center;width:100%;text-align:left;background:none;border:0;padding:9px 16px;cursor:pointer;font-size:14px;color:var(--ink)}
.lrow:hover{background:var(--surface-2)}
.lrow[aria-current="true"]{background:var(--accent-soft);box-shadow:inset 3px 0 0 var(--accent)}
.lrow .min{font-family:var(--mono);font-size:11px;color:var(--ink-3)}
.tick{width:18px;height:18px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center}
.tick.on{background:var(--good);border-color:var(--good)}
.tick svg{width:11px;height:11px}
.ico{width:16px;height:16px;color:var(--ink-3);vertical-align:-3px}

.lesson{padding:28px clamp(18px,4vw,40px) 32px}
.lesson-head{display:grid;gap:8px;margin-bottom:22px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.lesson-head h1{font-size:clamp(24px,3.4vw,34px);font-weight:700;letter-spacing:-.01em;line-height:1.15}
.video{border-radius:var(--r);background:#0E1512;color:#fff;aspect-ratio:16/9;max-width:100%;display:grid;place-items:center;text-align:center;padding:20px;position:relative;overflow:hidden;margin-bottom:22px}
.video::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 20%,rgba(69,168,118,.35),transparent 60%),repeating-linear-gradient(-55deg,rgba(255,255,255,.04) 0 14px,transparent 14px 28px)}
.video > div{position:relative;display:grid;gap:12px;justify-items:center}
.play{width:72px;height:72px;border-radius:50%;background:#fff;color:#0E1512;display:grid;place-items:center;text-decoration:none}
.play svg{width:26px;height:26px;margin-left:4px}
.video .src{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;opacity:.75}
.prose{max-width:68ch;font-size:16px;line-height:1.65}
.prose h2{font-size:21px;margin:26px 0 8px;font-weight:700}
.prose h3{font-size:17px;margin:20px 0 6px;font-weight:700}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 14px;padding-left:22px}
.prose li{margin-bottom:4px}
.say{margin:6px 0 18px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface-2);padding:12px 16px 12px 16px;display:grid;gap:6px}
.say .lab{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:600}
.say p{margin:0;font-size:16px;font-style:italic}
.lesson-foot{display:flex;justify-content:space-between;gap:10px;margin-top:30px;padding-top:18px;border-top:1px solid var(--line);flex-wrap:wrap}

/* quiz */
.q{border:1px solid var(--line);border-radius:var(--r);padding:16px;margin-bottom:12px;display:grid;gap:10px}
.q .qt{font-weight:600}
.opt{display:flex;gap:10px;align-items:flex-start;padding:9px 12px;border:1px solid var(--line);border-radius:8px;cursor:pointer;background:var(--surface)}
.opt:hover{border-color:var(--ink-3)}
.opt input{margin-top:4px;accent-color:var(--accent)}
.opt.right{border-color:var(--good);background:var(--accent-soft)}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.score{display:flex;gap:14px;align-items:center;padding:14px 16px;border-radius:var(--r);margin-bottom:16px}
.score .big{font-family:var(--display);font-weight:800;font-size:40px;line-height:1}
.score.pass{background:var(--accent-soft)}
.score.fail{background:var(--hi-soft)}

/* tables */
.tbl-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);font-weight:500;padding:10px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:middle}
tr:last-child td{border-bottom:0}
td.n{font-variant-numeric:tabular-nums;font-family:var(--mono);font-size:13px}
tr.me td{background:var(--hi-soft)}
.rank{font-family:var(--display);font-weight:800;font-size:22px;width:44px}
.person{display:flex;gap:10px;align-items:center}
.person img{width:30px;height:30px;border-radius:50%}

/* schedule */
.sched{display:grid;gap:10px}
.srow{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;padding:14px 16px}
@media (max-width:600px){.srow{grid-template-columns:auto 1fr}.srow .act{grid-column:1/-1}}
.srow.past{opacity:.6}

/* forms / manage */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:18px;overflow-x:auto}
.tabs button{background:none;border:0;padding:10px 14px;cursor:pointer;color:var(--ink-2);font-weight:600;white-space:nowrap}
.tabs button[aria-selected="true"]{color:var(--ink);box-shadow:inset 0 -2px 0 var(--accent)}
.form{display:grid;gap:14px}
.f{display:grid;gap:5px}
.f label,.f .lb{font-size:12px;font-weight:600;color:var(--ink-2)}
.f input,.f select,.f textarea{width:100%;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:9px 11px}
.f textarea{min-height:120px;resize:vertical;font-family:var(--mono);font-size:13px;line-height:1.55}
.f .hint{font-size:12px;color:var(--ink-3)}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.f3{display:grid;grid-template-columns:2fr 1fr 1fr;gap:14px}
@media (max-width:600px){.f2,.f3{grid-template-columns:1fr}}
.editor{display:grid;grid-template-columns:300px minmax(0,1fr);gap:18px;align-items:start}
@media (max-width:900px){.editor{grid-template-columns:1fr}}
.listbox{display:grid}
.li{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line);cursor:pointer;background:none;border-left:0;border-right:0;border-top:0;text-align:left;width:100%}
.li:last-child{border-bottom:0}
.li:hover{background:var(--surface-2)}
.li[aria-current="true"]{background:var(--accent-soft)}
.edmod{border:1px solid var(--line);border-radius:8px;overflow:hidden}
.edmod-h{display:flex;gap:8px;align-items:center;padding:8px 10px;background:var(--surface-2)}
.edmod-h input{flex:1;min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:6px 9px;font-weight:600}
.edl{display:flex;gap:8px;align-items:center;padding:8px 10px;border-top:1px solid var(--line);cursor:pointer;font-size:14px}
.edl:hover{background:var(--surface-2)}
.edl.sel{background:var(--accent-soft)}
.edl .t{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.qed{border:1px dashed var(--line);border-radius:8px;padding:12px;display:grid;gap:8px}
.qed .or{display:grid;grid-template-columns:auto 1fr;gap:8px;align-items:center}
.qed .or input[type=text]{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:6px 9px;width:100%}
.checks{display:grid;gap:6px}
.checks label{display:flex;gap:8px;align-items:center;font-size:14px;font-weight:400;color:var(--ink)}

.empty{padding:28px;text-align:center;color:var(--ink-3)}
.notice{padding:12px 16px;border-radius:var(--r);background:var(--hi-soft);color:var(--hi-ink);font-size:14px}
.toast{position:fixed;left:50%;bottom:calc(env(safe-area-inset-bottom,0px) + 20px);transform:translateX(-50%);background:var(--ink);color:var(--ground);padding:10px 16px;border-radius:8px;font-size:14px;z-index:50;box-shadow:0 6px 24px rgba(0,0,0,.2);max-width:calc(100% - 32px)}
.cohortpick{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.skeleton{height:14px;background:var(--surface-2);border-radius:6px}

/* ---- self-hosted additions ---- */
.auth{min-height:calc(100vh - 140px);display:grid;place-items:center;padding-block:40px}
.auth-card{width:100%;max-width:400px;padding:28px;display:grid;gap:18px}
.auth-card .h-display{font-size:40px}
.auth-card .btn.primary{justify-content:center;width:100%;padding:11px 14px}
.linkbtn{background:none;border:0;padding:0;color:var(--accent);cursor:pointer;text-decoration:underline;text-underline-offset:3px;font-size:14px}
.err{color:var(--bad);font-size:14px;margin:0}
.ok{color:var(--good);font-size:14px;margin:0}
.av{width:30px;height:30px;border-radius:50%;display:inline-grid;place-items:center;font-size:12px;font-weight:700;color:#fff;flex:none;letter-spacing:.02em}
.who .av{width:28px;height:28px}
.whobtn{display:flex;align-items:center;gap:8px;background:none;border:0;padding:4px;border-radius:8px;cursor:pointer;color:var(--ink-2);font-size:13px}
.whobtn:hover{background:var(--surface-2)}
.addrep{padding:18px;display:grid;gap:14px;margin-bottom:18px}
.f4{display:grid;grid-template-columns:1.2fr 1.4fr 1fr .8fr auto;gap:12px;align-items:end}
@media (max-width:900px){.f4{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.f4{grid-template-columns:1fr}}
td select{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:4px 6px;font-size:13px}

/* ---- login page: red fading into black ---- */
body.is-auth{background:linear-gradient(180deg,#0A0A0B 0%,#0A0A0B 18%,#2E0609 45%,#7A0D16 75%,#C0141F 100%) fixed,#0A0A0B}
body.is-auth .brand span{color:#B9B9BE}
body.is-auth .top{background:transparent;border-bottom-color:transparent}
body.is-auth .auth-card{background:rgba(12,12,13,.82);border-color:rgba(255,255,255,.1);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);box-shadow:0 24px 60px rgba(0,0,0,.45)}
body.is-auth .auth-card .eyebrow{color:#FF8A92;letter-spacing:.16em}
.btn.primary{background:linear-gradient(180deg,#E3263A,#B0141F);border-color:#B0141F}

/* logo */
.brand{align-items:center;gap:10px}
.brand .logo{height:22px;width:auto;display:block}
body.is-auth .brand .logo{height:28px}
@media (max-width:520px){.brand .logo{height:18px}}

/* ---- login: centered gradient logo with shine ---- */
body.is-auth .top{display:none}
body.is-auth .auth{min-height:calc(100vh - 20px)}
.auth-stack{display:grid;justify-items:center;gap:30px;width:100%}
.auth-logo-wrap{width:min(560px,100%);filter:drop-shadow(0 2px 0 rgba(0,0,0,.55)) drop-shadow(0 0 14px rgba(255,40,50,.3))}
.auth-logo,.nav-logo{
  width:100%;aspect-ratio:1200/69;
  -webkit-mask:url(/logo-academy.png) center/contain no-repeat;mask:url(/logo-academy.png) center/contain no-repeat;
  background:
    linear-gradient(105deg,transparent 45%,rgba(255,255,255,.3) 50%,transparent 55%) 160% 0/260% 100% no-repeat,
    linear-gradient(180deg,#FF4A56 0%,#F01C2A 45%,#D0101D 75%,#A00B16 100%);
  animation:logo-shine 7s ease-in-out infinite;
}
@keyframes logo-shine{0%,70%{background-position:160% 0,0 0}90%,100%{background-position:-60% 0,0 0}}
@media (prefers-reduced-motion:reduce){.auth-logo,.nav-logo{animation:none}}

/* ---- site background: black at top fading to red at the bottom ---- */
html{background:#0A0A0B}
body{min-height:100vh;background:linear-gradient(180deg,#0A0A0B 0%,#0A0A0B 30%,#24060A 62%,#4E0A11 85%,#6E0E17 100%) fixed,#0A0A0B}

/* header logo = same gradient logo as the sign-in page, smaller */
.nav-logo{display:block;width:clamp(210px,24vw,300px);filter:drop-shadow(0 0 8px rgba(255,40,50,.25))}
.brand{padding-block:4px}