/* G&V platform shell styles (sign-in, onboarding, dashboard). Lesson pages keep their own gv.css. */
:root{
  --ink:#101828;--muted:#475467;--paper:#FBF8F3;--card:#fff;--line:#E7E1D6;
  --teal:#0A6E69;--teal-soft:#DDF3F1;--plum:#5B2A86;--plum-soft:#EEE5F7;
  --amber:#F4A30B;--amber-soft:#FFF1D6;--navy:#0E1B3D;--red:#C0362C;--red-soft:#FCE4E2;--green:#1F8A4C;--green-soft:#DFF3E6;
  --sky:#1864ab;--sky-soft:#E3EEFA;
  --radius:18px;--shadow:0 1px 2px rgba(16,24,40,.06),0 8px 24px -12px rgba(16,24,40,.18);
  --display:"Space Grotesk",system-ui,sans-serif;--body:"IBM Plex Sans",system-ui,sans-serif;
  --fs:1;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --ink:#F2F4F7;--muted:#B4BCC8;--paper:#0B1220;--card:#131C2E;--line:#26324A;
  --teal-soft:#0F3634;--plum-soft:#2C1D40;--amber-soft:#3A2B0A;--red-soft:#3A1614;--green-soft:#11301E;--sky-soft:#13263F;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6);
}}
:root[data-theme="dark"]{
  --ink:#F2F4F7;--muted:#B4BCC8;--paper:#0B1220;--card:#131C2E;--line:#26324A;
  --teal-soft:#0F3634;--plum-soft:#2C1D40;--amber-soft:#3A2B0A;--red-soft:#3A1614;--green-soft:#11301E;--sky-soft:#13263F;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 calc(17px * var(--fs))/1.55 var(--body);min-height:100vh}
h1,h2,h3{font-family:var(--display);line-height:1.15;letter-spacing:-.02em;margin:0 0 .4em}
h1{font-size:clamp(1.9rem,5.5vw,3rem)} h2{font-size:clamp(1.3rem,3vw,1.7rem)} h3{font-size:1.1rem}
p{margin:0 0 .8em}
a{color:var(--teal)}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.narrow{max-width:560px}
:focus-visible{outline:3px solid var(--plum);outline-offset:2px}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* top bar */
.topbar{background:var(--navy);color:#fff;position:sticky;top:0;z-index:20}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;height:60px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font:700 1rem var(--display)}
.brand img{width:34px;height:34px;border-radius:9px}
.brand small{display:block;font:500 .72rem var(--body);opacity:.75;letter-spacing:.04em}
.topnav{display:flex;align-items:center;gap:6px}
.topnav a,.topnav button{color:#fff;text-decoration:none;font:600 .92rem var(--body);background:none;border:0;padding:9px 12px;border-radius:10px;cursor:pointer}
.topnav a:hover,.topnav button:hover{background:rgba(255,255,255,.1)}
.topnav a[aria-current="page"]{background:rgba(255,255,255,.14)}
@media (max-width:640px){.topnav .hide-sm{display:none}.brand span{display:none}}
/* Mobile tab bar (injected by gv-session.js on member pages) */
.tabbar{display:none}
.topnav .show-sm{display:none}
@media (max-width:640px){.topnav .show-sm{display:inline-block;font-size:1.1rem}}
@media (max-width:640px){
  .tabbar{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:40;background:var(--navy);padding:6px 4px calc(6px + env(safe-area-inset-bottom));box-shadow:0 -6px 20px rgba(0,0,0,.18)}
  .tabbar a{display:grid;justify-items:center;gap:2px;color:#C9D0E2;text-decoration:none;font:600 .68rem var(--body);padding:4px 0;border-radius:10px;min-height:44px}
  .tabbar a .i{font-size:1.25rem;line-height:1}
  .tabbar a[aria-current="page"]{color:#fff;background:rgba(255,255,255,.1)}
  body.has-tabbar{padding-bottom:calc(68px + env(safe-area-inset-bottom))}
  body.has-tabbar .composer{bottom:calc(64px + env(safe-area-inset-bottom))}
}

/* buttons, inputs */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:700 1rem var(--display);padding:14px 20px;border-radius:14px;border:0;cursor:pointer;text-decoration:none;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--amber);color:var(--navy)}
.btn-primary:hover{box-shadow:0 6px 18px -8px rgba(244,163,11,.9)}
.btn-dark{background:var(--navy);color:#fff}
.btn-line{background:var(--card);color:var(--ink);border:2px solid var(--line)}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.btn-block{width:100%}
label.lbl{display:block;font:600 .95rem var(--display);margin:0 0 6px}
.input{font:inherit;width:100%;padding:14px;border-radius:12px;border:2px solid var(--line);background:var(--card);color:var(--ink)}
.input:focus{border-color:var(--teal);outline:none;box-shadow:0 0 0 4px var(--teal-soft)}
.code-input{font:700 1.6rem/1 var(--display);letter-spacing:.4em;text-align:center}
.hint{font-size:.9rem;color:var(--muted)}
.err{color:var(--red);font-weight:600}
.ok{color:var(--green);font-weight:600}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(320px,100%),1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr))}

/* choice chips (onboarding) */
.choices{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(min(220px,100%),1fr))}
.choice{position:relative}
.choice input{position:absolute;opacity:0;inset:0;cursor:pointer}
.choice span{display:block;border:2px solid var(--line);background:var(--card);border-radius:16px;padding:16px;transition:border-color .15s,background .15s,transform .15s}
.choice b{display:block;font:700 1.05rem var(--display)}
.choice small{display:block;color:var(--muted);margin-top:4px;font-size:.9rem}
.choice input:checked+span{border-color:var(--teal);background:var(--teal-soft)}
.choice input:focus-visible+span{outline:3px solid var(--plum);outline-offset:2px}
.choice:hover span{transform:translateY(-1px)}

/* hero */
.hero{background:var(--navy);color:#fff;padding:36px 0 64px}
.hero p{color:#D0D5DD}
.eyebrow{font:700 .78rem var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--amber)}
.lift{margin-top:-40px}

/* subject tiles */
.subj{display:grid;gap:10px;text-decoration:none;color:var(--ink);background:var(--card);border:1px solid var(--line);border-top:8px solid var(--c);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);transition:transform .2s cubic-bezier(.2,.8,.2,1),box-shadow .2s}
.subj:hover{transform:translateY(-3px);box-shadow:0 14px 30px -16px rgba(16,24,40,.35)}
.subj h3{font-size:1.35rem;margin:0}
.bar{height:10px;border-radius:99px;background:var(--line);overflow:hidden}
.bar span{display:block;height:100%;background:var(--c);border-radius:99px;transition:width .6s cubic-bezier(.2,.8,.2,1)}
.papers{display:flex;gap:8px;flex-wrap:wrap}
.pchip{font:600 .85rem var(--body);padding:6px 10px;border-radius:99px;background:var(--paper);border:1px solid var(--line);color:var(--ink);text-decoration:none}
.pchip.soon{opacity:.6}
.stat{display:grid;gap:2px}
.stat b{font:700 1.8rem/1 var(--display)}
.stat span{font-size:.85rem;color:var(--muted)}
.countdown{display:flex;gap:10px;flex-wrap:wrap}
.cd{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:12px 14px;min-width:120px}
.cd b{display:block;font:700 1.8rem/1 var(--display);color:var(--amber)}
.cd span{font-size:.85rem;color:#D0D5DD}
.pill{display:inline-block;font:700 .72rem var(--display);letter-spacing:.06em;text-transform:uppercase;padding:5px 10px;border-radius:99px;background:var(--amber);color:var(--navy)}
.soonbox{border:2px dashed var(--line);border-radius:var(--radius);padding:18px;color:var(--muted)}
footer.foot{padding:28px 0;color:var(--muted);font-size:.88rem;border-top:1px solid var(--line);margin-top:40px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}