/* etched.school: the Etched home page, by Emblem.
   Shared with Etched Primary, Etched Secondary and Emblem: the tablet-and-pencil mark, navy and
   bright blue, and Lexend for every heading and paragraph.
   Primary takes the bright blue, Secondary the navy. */
:root{
  --paper:#F6F8FB; --card:#FFFFFF; --tint:#E9F1FA; --ink:#0A2256; --muted:#4A5670; --line:#D5DEEA;
  --blue:#0080D4; --navy:#0A2256;
  --primary:#0068B8;   /* text-safe bright blue: Etched Primary */
  --secondary:#0A2256; /* navy: Etched Secondary */
  --mid:#0B4E93;
  --display:"Lexend",system-ui,-apple-system,"Segoe UI",sans-serif;
  --body:"Lexend",system-ui,-apple-system,"Segoe UI",sans-serif;
  --gutter:clamp(16px,4vw,40px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:18px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-underline-offset:3px;text-decoration-thickness:1.5px}
a:hover{color:var(--navy)}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:6px}
h1,h2,h3{font-family:var(--display);margin:0;text-wrap:balance}
p{margin:0 0 1em}
.wrap{max-width:1180px;margin:0 auto;padding:0 var(--gutter)}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:10px 14px;border-radius:8px;z-index:10}
.skip:focus{left:8px}
.small{font-size:15px;color:var(--muted)}

/* ---- the lockup: mark + Etched wordmark + who it's from ---- */
.lockup{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.lockup .lockup-img{height:52px;width:auto;display:block}
.lockup-words{display:flex;flex-direction:column;line-height:1}
.wordmark{font:800 28px/1 var(--display);letter-spacing:-.03em;padding-bottom:.06em;color:var(--navy)}
.by{font:700 13px/1.2 var(--display);color:var(--muted);letter-spacing:.01em}
.phase{display:inline-block;font:700 13px/1 var(--display);color:#fff;border-radius:999px;padding:4px 10px 5px;letter-spacing:.01em;vertical-align:.15em}
.phase-primary{background:var(--primary)}
.phase-secondary{background:var(--secondary)}

/* ---- header ---- */
.top{position:sticky;top:0;z-index:5;background:color-mix(in oklab,var(--paper) 90%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top-row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.nav{list-style:none;margin:0;padding:0;display:flex;gap:4px 22px;flex-wrap:wrap;justify-content:flex-end}
.nav a{color:var(--ink);text-decoration:none;font-weight:700;font-size:16px}
.nav a:hover{color:var(--primary);text-decoration:underline}
@media (max-width:760px){ .nav li:not(:first-child){display:none} .nav a{font-size:15px} }

/* ---- hero ---- */
.hero{padding-top:clamp(36px,7vw,84px);padding-bottom:clamp(40px,6vw,72px)}
.hero-h{font-size:clamp(46px,9.4vw,118px);font-weight:800;line-height:.92;letter-spacing:-.035em;max-width:11ch;color:var(--ink)}
.lede{font-size:clamp(18px,2.1vw,22px);max-width:58ch;margin:clamp(18px,3vw,28px) 0 clamp(28px,4vw,44px);color:var(--ink)}

/* The signature: one continuous blue-to-navy band, split into two doors. Primary is the bright
   blue end, Secondary the navy end, meeting in the middle. */
.doors{display:grid;grid-template-columns:1fr 1fr;border-radius:28px;overflow:hidden;
  box-shadow:0 1px 0 rgba(23,33,43,.08),0 24px 48px -28px rgba(10,34,86,.55)}
.door{--a:90deg;position:relative;display:grid;grid-template-rows:auto 1fr auto;gap:22px;padding:clamp(22px,3.4vw,40px);
  color:#fff;text-decoration:none;min-height:340px;isolation:isolate}
.door-primary{background:linear-gradient(var(--a),var(--primary),var(--mid))}
.door-secondary{background:linear-gradient(var(--a),var(--mid),var(--secondary))}
.door-primary::after{content:"";position:absolute;right:0;top:12%;bottom:12%;width:1px;background:rgba(255,255,255,.28)}
.door:hover,.door:focus-visible{color:#fff}
.door:focus-visible{outline:4px solid #fff;outline-offset:-10px;border-radius:24px}
.plate{display:inline-flex;align-items:center;gap:12px;background:#fff;border-radius:18px;padding:12px 18px 12px 14px;justify-self:start;
  box-shadow:0 10px 24px -14px rgba(0,0,0,.5);transition:transform .2s ease}
.plate{flex-direction:column;align-items:flex-start;gap:8px}
.plate .plate-img{height:64px;width:auto;display:block}
.plate-words{display:flex;flex-direction:column;align-items:flex-start;gap:5px}
.plate .wordmark{font-size:34px}
.door-body{display:grid;gap:10px;align-content:start}
.door-h{font:800 clamp(26px,3vw,36px)/1.05 var(--display);letter-spacing:-.02em}
.door-p{font-size:18px;line-height:1.5;max-width:40ch;opacity:.95}
.door-go{justify-self:start;font:700 18px/1 var(--display);background:#fff;color:var(--ink);border-radius:999px;padding:15px 22px;
  box-shadow:0 4px 0 rgba(0,0,0,.18);transition:transform .15s ease,box-shadow .15s ease}
.door-primary .door-go{color:var(--primary)}
.door-secondary .door-go{color:var(--secondary)}
.door:hover .door-go{transform:translateY(-2px);box-shadow:0 6px 0 rgba(0,0,0,.18)}
.door:hover .plate{transform:rotate(-1.5deg)}
.door:active .door-go{transform:translateY(2px);box-shadow:0 2px 0 rgba(0,0,0,.18)}
@media (max-width:760px){
  .doors{grid-template-columns:1fr;border-radius:22px}
  .door{--a:180deg;min-height:0}
  .door-primary::after{left:8%;right:8%;top:auto;bottom:0;width:auto;height:1px}
  .plate .wordmark{font-size:30px}
  .plate .plate-img{height:52px}
}

/* one orchestrated moment: the gradient sweeps in once on load */
@media (prefers-reduced-motion:no-preference){
  .doors{animation:doors-in .9s cubic-bezier(.2,.8,.2,1) .15s both}
  @keyframes doors-in{from{clip-path:inset(0 100% 0 0 round 28px)}to{clip-path:inset(0 0 0 0 round 28px)}}
}

/* code box */
.codebox{margin-top:clamp(24px,3vw,36px);max-width:720px}
.codebox label{display:block;font-weight:700;margin-bottom:10px}
.code-row{display:flex;gap:10px;flex-wrap:wrap}
.code-row input{flex:1 1 220px;min-width:0;font:800 24px/1 var(--display);letter-spacing:.12em;text-transform:uppercase;color:var(--ink);
  background:var(--card);border:2px solid var(--line);border-radius:14px;padding:14px 16px}
.code-row input::placeholder{color:#9AA6B0;letter-spacing:.12em}
.code-row input:focus{border-color:var(--blue);outline:none;box-shadow:0 0 0 4px color-mix(in oklab,var(--blue) 22%,transparent)}
.code-row button,.btn{font:700 18px/1 var(--display);color:#fff;background:var(--ink);border:0;border-radius:14px;padding:16px 22px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}
.code-row button:hover,.btn:hover{background:#0068B8;color:#fff}
.btn-quiet{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--line)}
.btn-quiet:hover{background:var(--card);color:var(--ink)}
.code-msg{min-height:1.6em;margin:8px 0 0;font-weight:700;color:#A3262B}
.code-msg:empty{min-height:0}
.teacher-links{margin:16px 0 0;color:var(--muted);font-size:16px}

/* ---- content bands ---- */
.band{padding:clamp(56px,8vw,104px) 0;border-top:1px solid var(--line)}
.band-tint{background:var(--tint)}
.split{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);gap:clamp(24px,5vw,72px);align-items:start}
.split > h2{font-size:clamp(32px,4.4vw,52px);font-weight:800;line-height:1;letter-spacing:-.035em;position:sticky;top:96px}
@media (max-width:860px){ .split{grid-template-columns:1fr} .split > h2{position:static} }
.prose{max-width:64ch}
.prose .big{font:500 clamp(21px,2.3vw,26px)/1.35 var(--display);letter-spacing:-.01em;margin-bottom:1.1em}
.prose h3{font-size:22px;font-weight:800;margin:1.6em 0 .6em;letter-spacing:-.01em;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.prose ul{padding-left:1.2em;margin:0 0 1.2em}
.prose li{margin-bottom:.55em}
.prose .ticks{list-style:none;padding:0}
.prose .ticks li{position:relative;padding-left:34px}
.prose .ticks li::before{content:"";position:absolute;left:0;top:.32em;width:20px;height:20px;border-radius:6px;
  background:var(--blue)}
.prose .ticks li::after{content:"";position:absolute;left:6px;top:calc(.32em + 4px);width:6px;height:10px;border:solid #fff;border-width:0 2.5px 2.5px 0;transform:rotate(40deg)}
.source{font-size:15px;color:var(--muted)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,3vw,40px);margin-top:.5em}
.two > div{background:var(--card);border-radius:20px;padding:4px 24px 12px;border:1px solid var(--line)}
.two h3{margin-top:1em}
@media (max-width:640px){ .two{grid-template-columns:1fr} }

/* curriculum: each strand a row, the strand name on the left */
.links{margin:0;display:grid}
.links > div{display:grid;grid-template-columns:150px 1fr;gap:6px 24px;padding:18px 0;border-top:1px solid var(--line)}
.links > div:last-child{border-bottom:1px solid var(--line)}
.links dt{font:800 20px/1.3 var(--display);letter-spacing:-.01em}
.links dd{margin:0}
.links dd a{display:inline-block;margin-top:4px}
@media (max-width:560px){ .links > div{grid-template-columns:1fr} }

/* questions */
.faq details{border-top:1px solid color-mix(in oklab,var(--line),var(--ink) 8%)}
.faq details:last-child{border-bottom:1px solid color-mix(in oklab,var(--line),var(--ink) 8%)}
.faq summary{cursor:pointer;list-style:none;font:700 20px/1.35 var(--display);padding:18px 40px 18px 0;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:6px;top:50%;width:12px;height:12px;border:solid var(--ink);border-width:0 2.5px 2.5px 0;transform:translateY(-70%) rotate(45deg);transition:transform .2s ease}
.faq details[open] summary::after{transform:translateY(-20%) rotate(-135deg)}
.faq details p{margin:0 0 20px}

.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:1.4em}

/* ---- footer ---- */
.foot{background:var(--ink);color:#DCE4EA;padding:44px 0 56px}
.foot-row{display:grid;gap:18px}
.foot .lockup{background:#fff;border-radius:14px;padding:10px 14px;justify-self:start}
.foot .lockup .lockup-img{height:46px}
.foot .wordmark{font-size:22px}
.foot-links{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 24px}
.foot a{color:#fff}
.fine{margin:0;font-size:15px;color:#AEBAC4}

/* moving secondary progress: keep the page out of sight for the second it takes */
.moving-note{display:none}
.moving body > *{visibility:hidden}
.moving .moving-note{display:block;visibility:visible;position:fixed;inset:0;margin:0;display:grid;place-items:center;font:700 20px var(--display);color:var(--ink);text-align:center;padding:24px}

@media print{ .top,.doors,.teacher-doors,.codebox,.teacher-links,.foot{display:none} .band{padding:24px 0;border:0;background:none} .split > h2{position:static} }

/* privacy page */
.split > .split-h{font-size:clamp(36px,5vw,60px);font-weight:800;line-height:1;letter-spacing:-.04em}
.prose .sub-h{font-size:24px;font-weight:800;margin:1.6em 0 .5em;letter-spacing:-.015em}

/* Teacher sign-in buttons, one under each door. */
.teacher-doors{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
.tdoor{display:flex;align-items:center;gap:10px;justify-content:center;padding:14px 18px;border-radius:16px;background:var(--card);font:700 17px/1.2 var(--display);text-decoration:none;color:var(--ink);box-shadow:inset 0 0 0 2px var(--line);transition:transform .15s,box-shadow .15s}
.tdoor span{font:800 12px/1 var(--display);text-transform:uppercase;letter-spacing:.06em;color:#fff;border-radius:999px;padding:6px 9px}
.tdoor-primary span{background:var(--primary)}
.tdoor-secondary span{background:var(--secondary)}
.tdoor-primary:hover,.tdoor-primary:focus-visible{box-shadow:inset 0 0 0 2px var(--primary);color:var(--primary)}
.tdoor-secondary:hover,.tdoor-secondary:focus-visible{box-shadow:inset 0 0 0 2px var(--secondary);color:var(--secondary)}
.tdoor:hover{transform:translateY(-1px)}
@media (max-width:760px){ .teacher-doors{grid-template-columns:1fr} }
/* The Emblem shield, shown small beside every mention of Emblem. */
.emblem-name{white-space:nowrap}
.emblem-name img{display:inline-block;width:auto;height:1.05em;vertical-align:-.17em;margin-right:.28em}
.lockup .emblem-name img{width:auto;height:1.1em}

@media (max-width:420px){ .lockup .lockup-img{height:44px} }