/* Brain Builder: tokens and components. Lifted from docs/mockup/brain-builder-mockup.html. */
:root{
  --navy:#2C386C; --rose:#C9447A; --pink:#FF6B9D; --peri:#7E8FD4; --cream:#F8F4EC; --charcoal:#2E2E2E; --gold:#E0A938;
  --bg:var(--cream); --fg:var(--charcoal); --card:#FFFDF8; --line:rgba(44,56,108,.14); --muted:#6B6F86;
  --chip-bg:var(--navy); --chip-fg:var(--cream); --accent:var(--rose); --on-chip-accent:var(--pink);
  --font-head:"Jost",Century Gothic,Arial,sans-serif; --font-body:"Lora",Georgia,serif; --font-mono:"JetBrains Mono",Courier New,monospace;
}
/* SYNC: this dark token set is repeated in the data-theme block below. Keep both identical. */
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){ --bg:#1A2140; --fg:var(--cream); --card:#232B52; --line:rgba(248,244,236,.14); --muted:#B9BFD9; --chip-bg:var(--cream); --chip-fg:#1A2140; --accent:var(--pink); --on-chip-accent:var(--rose); color-scheme:dark } }
/* SYNC: must stay identical to the prefers-color-scheme dark block above. */
:root[data-theme="dark"]{ --bg:#1A2140; --fg:var(--cream); --card:#232B52; --line:rgba(248,244,236,.14); --muted:#B9BFD9; --chip-bg:var(--cream); --chip-fg:#1A2140; --accent:var(--pink); --on-chip-accent:var(--rose); color-scheme:dark }

*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font-body);font-size:17px;line-height:1.55;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:0 48px}
h1,h2,h3{font-family:var(--font-head);font-weight:500;line-height:1.1;text-wrap:balance;margin:0}
.wrap{max-width:1040px;margin:0 auto}
.topbar{padding-block:18px 10px;border-bottom:1px solid var(--line)}
.topbar .k{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--peri);outline-offset:2px}
.screen{display:grid;grid-template-columns:1.1fr .9fr;grid-template-areas:"head pic" "body pic";grid-template-rows:auto 1fr;column-gap:36px;row-gap:0;align-items:start;padding-block:12px}
.screen[hidden]{display:none}
.s-head{grid-area:head}
.s-body{grid-area:body}
.s-pic{grid-area:pic;align-self:start}
@media (max-width:760px){.screen{grid-template-columns:1fr;grid-template-areas:"head" "pic" "body";grid-template-rows:auto;column-gap:0}.s-pic{margin-top:24px}.s-pic+.s-body{margin-top:2px}}
.screen>*{min-width:0}
.kicker{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.big{font-size:clamp(34px,5vw,56px);font-weight:400;letter-spacing:-.01em;margin-top:8px}
.lead{font-size:19px;max-width:34em;margin-top:16px}
.field{margin-top:28px;display:grid;gap:10px;max-width:420px}
.field label{font-family:var(--font-head);font-size:15px}
.field input{font:inherit;font-size:18px;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;background:var(--card);color:var(--fg);width:100%}
.choice{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-family:var(--font-head);font-size:15px;padding:9px 14px;border-radius:999px;border:1.5px solid var(--line);background:var(--card);color:var(--fg);cursor:pointer}
.chip[aria-pressed="true"]{background:var(--chip-bg);color:var(--chip-fg);border-color:var(--chip-bg)}
.btn{font-family:var(--font-head);font-size:17px;font-weight:500;padding:14px 26px;border-radius:999px;border:0;background:var(--rose);color:#fff;cursor:pointer;display:inline-block;text-decoration:none}
.btn.ghost{background:transparent;color:var(--fg);border:1.5px solid var(--line)}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:12px}
.pic{aspect-ratio:4/3;max-width:100%;border-radius:14px;border:1.5px dashed var(--peri);display:grid;place-items:center;text-align:center;padding:20px;color:var(--muted);font-family:var(--font-head);font-size:15px;background:linear-gradient(135deg,rgba(126,143,212,.08),rgba(255,107,157,.08))}
.pic-img{display:block;max-width:100%;height:auto;border-radius:14px}
.pic small{display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:8px;color:var(--peri)}
.why{margin-top:26px;padding:20px 22px;border-radius:14px;background:var(--card);border:1px solid var(--line);max-width:620px}
.why h2{font-size:24px;font-weight:500}
.why p{margin:10px 0 0;font-size:16px}
.why p b{font-family:var(--font-head);font-weight:600;color:var(--accent)}
.why small{display:block;margin-top:10px;font-size:13px;color:var(--muted)}
.how{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.how span{font-family:var(--font-head);font-size:14px;padding:6px 12px;border-radius:999px;background:var(--chip-bg);color:var(--chip-fg)}
.whyask{font-size:14px;color:var(--muted);margin:8px 0 0;font-style:italic}
.block{margin-top:22px;padding:18px 20px;border-radius:14px;background:var(--card);border:1px solid var(--line)}
.block h3{font-size:16px;font-family:var(--font-mono);font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.block ol{margin:12px 0 0;padding-left:22px}
.block li{margin-top:8px;font-size:16px}
.prompt{margin-top:12px;font-family:var(--font-mono);font-size:13.5px;line-height:1.6;padding:14px;border-radius:10px;background:var(--bg);border:1px solid var(--line);white-space:pre-wrap;overflow-x:auto;min-width:0}
.textlink{font-family:var(--font-head);font-size:16px;color:var(--accent)}
.foot{margin-top:40px;padding-top:16px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
@media (prefers-reduced-motion:no-preference){.chip{transition:border-color .15s,background .15s}}

/* App shell and screens (Task 5). Values lifted from the mockup. */
.topbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.topbar nav{display:flex;flex-wrap:wrap;gap:6px 16px}
.topbar nav a{font-family:var(--font-head);font-size:15px;color:var(--accent)}
#app{min-width:0}
#app h1:focus,#app h2:focus{outline:none}
textarea,select{font:inherit;font-size:15px;width:100%;min-height:84px;padding:12px;border-radius:10px;border:1.5px solid var(--line);background:var(--bg);color:var(--fg)}
textarea:focus-visible{outline:3px solid var(--peri);outline-offset:2px}
.small{margin:8px 0 0;font-size:15px}
.gentle{margin:10px 0 0;font-size:15px;color:var(--accent);font-family:var(--font-head)}
.check{display:flex;gap:10px;align-items:center;font-family:var(--font-head);font-size:15px}
.check input{width:20px;height:20px;accent-color:var(--rose)}
/* interviewer */
.q{font-size:clamp(26px,3.4vw,38px);font-weight:400;margin-top:10px}
.progress{display:flex;gap:6px;margin-top:6px}
.progress i{height:4px;flex:1;background:var(--line);border-radius:2px}
.progress i.on{background:var(--pink)}
.answers{display:grid;gap:10px;margin-top:22px;max-width:560px}
.ans{text-align:left;font-family:var(--font-head);font-size:18px;padding:14px 18px;border-radius:12px;border:1.5px solid var(--line);background:var(--card);color:var(--fg);cursor:pointer;min-width:0}
.ans:hover{border-color:var(--pink)}
/* door card */
.door{margin-top:14px;padding:22px;border-radius:16px;background:var(--chip-bg);color:var(--chip-fg)}
.door .kicker{color:var(--on-chip-accent)}
.door h2{font-size:34px;font-weight:400;margin-top:6px}
.door p{margin:10px 0 0}
.door .btn.ghost{color:var(--chip-fg);border-color:currentColor}
/* route */
.route{display:grid;gap:12px;margin-top:20px}
.step{display:grid;grid-template-columns:92px 1fr;gap:14px;align-items:start;padding:14px 16px;border-radius:12px;background:var(--card);border:1px solid var(--line);text-align:left;font:inherit;color:var(--fg);cursor:pointer;width:100%}
.step>*{min-width:0}
.step .when{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);padding-top:4px}
.step h3{font-size:19px}
.step p{margin:4px 0 0;font-size:15px;color:var(--muted)}
.step.now{border-color:var(--pink);box-shadow:0 0 0 3px rgba(255,107,157,.18)}
.step .here,.step .done{display:inline-block;margin-top:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;padding:3px 8px;border-radius:999px}
.step .here{background:var(--pink);color:#2E2E2E}
.step .done{background:var(--chip-bg);color:var(--chip-fg)}
.download{margin-top:20px}
.links{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:22px}
.links a{font-family:var(--font-head);font-size:16px;color:var(--accent)}
/* stage */
.stagehead .big{font-size:clamp(30px,4vw,44px)}
.tooltabs{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.prompt{overflow-wrap:anywhere;max-height:420px;overflow-y:auto}
.runwhere{margin:10px 0 0;font-size:15px}
.kitsteps{margin:14px 0 0;padding-left:22px;font-size:16px}
.kitsteps li{margin:6px 0}
.kitsteps .runwhere{margin:0;font-size:inherit}
.honesty{margin:6px 0 0;font-size:14px;color:var(--muted);font-style:italic}
.stuck summary{font-family:var(--font-head);font-size:17px;cursor:pointer}
.stuck ul{padding-left:20px;margin:10px 0 0}
.stuck li{margin-top:8px;font-size:15px}
/* checker */
.grade{font-family:var(--font-head);font-size:72px;font-weight:300;line-height:1;color:var(--accent)}
.counts{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin-top:14px}
.counts div{border-top:2px solid var(--peri);padding-top:8px;min-width:0}
.counts b{font-family:var(--font-head);font-size:30px;font-weight:300;display:block;font-variant-numeric:tabular-nums;line-height:1.1}
.counts span{font-size:14px;color:var(--muted)}
.fix{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
.fix h4{font-family:var(--font-head);font-size:18px;font-weight:500;margin:0}
.fix p{margin:4px 0 0;font-size:15px}
input[type="file"]{font:inherit;font-size:15px;max-width:100%;margin-top:12px}
/* springboard, board */
.spring-list{margin:16px 0 0;padding-left:22px}
.spring-list li{margin-top:8px;font-family:var(--font-head);font-size:18px}
.summary{display:grid;gap:8px;margin:14px 0 0;padding:0;list-style:none}
.summary li{font-size:16px}
.summary b{font-family:var(--font-head);font-weight:500}
@media (prefers-reduced-motion:no-preference){.ans{transition:border-color .15s,background .15s}}

/* Presenter board (board/index.html). Shared on Zoom: nothing under 22px, headline 40px or more, tile numbers 64px or more. */
body.presenter{--fg:var(--cream);--muted:#B9BFD9;background:#1A2140;color:var(--cream);color-scheme:dark;margin:0;padding:clamp(20px,2.1vw,40px) clamp(16px,3.4vw,72px);min-height:100vh;font-size:22px}
.pboard{max-width:1800px;margin:0 auto;display:grid;gap:clamp(16px,1.4vw,26px)}
.pboard>*{min-width:0}
.phead{display:flex;flex-wrap:wrap;gap:8px 24px;align-items:baseline;justify-content:space-between}
.pkicker,.poffline{font-family:var(--font-mono);font-size:22px;letter-spacing:.08em;text-transform:uppercase}
.pkicker{color:var(--pink)}
.poffline{color:var(--muted)}
.poffline[hidden]{display:none}
.pheadline{font-size:clamp(40px,3.4vw,66px);font-weight:300;letter-spacing:-.01em;max-width:30em}
.ptiles{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(12px,1.2vw,22px)}
.ptile{padding:clamp(14px,1.2vw,24px);border-radius:16px;background:rgba(248,244,236,.06);border:1px solid rgba(248,244,236,.14);min-width:0}
.ptile b{font-family:var(--font-head);font-size:clamp(64px,5.4vw,108px);font-weight:300;display:block;font-variant-numeric:tabular-nums;line-height:1}
.ptile span{font-family:var(--font-mono);font-size:22px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);display:block;margin-top:10px}
.pbars{display:grid;gap:14px}
@media (min-width:1200px){.pbars{grid-template-columns:1fr 1fr;gap:16px clamp(40px,3.4vw,72px)}.pbar{grid-template-columns:minmax(200px,34%) 1fr 90px}}
.pbar{display:grid;grid-template-columns:minmax(220px,22%) 1fr 110px;gap:20px;align-items:center}
.pbar .plabel{font-family:var(--font-head);font-size:clamp(22px,1.5vw,30px)}
.ptrack{display:block;height:20px;border-radius:10px;background:rgba(248,244,236,.10);overflow:hidden}
.ptrack i{display:block;height:100%;width:0;border-radius:10px;background:linear-gradient(90deg,var(--rose),var(--pink))}
.pbar em{font-family:var(--font-mono);font-style:normal;font-size:clamp(22px,1.6vw,32px);text-align:right;font-variant-numeric:tabular-nums}
.pwall{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(12px,1.2vw,22px);align-items:stretch}
.psay{margin:0;padding:clamp(16px,1.2vw,24px) clamp(18px,1.4vw,26px);border-radius:14px;background:rgba(248,244,236,.08);border-left:4px solid var(--pink);min-width:0}
.psay.building{border-left-color:var(--peri)}
.psay[hidden]{display:none}
.psay blockquote{margin:0;font-family:var(--font-body);font-size:clamp(22px,1.45vw,30px);line-height:1.3;overflow-wrap:anywhere}
.psay figcaption{font-family:var(--font-mono);font-size:22px;letter-spacing:.04em;color:var(--muted);margin-top:12px}
.pempty{grid-column:1/-1;margin:0;font-family:var(--font-body);font-style:italic;font-size:clamp(22px,1.5vw,30px);color:var(--muted)}
@media (prefers-reduced-motion:no-preference){.ptrack i{transition:width .8s ease}.psay.new{animation:psay-in .6s ease both}}
@keyframes psay-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media (max-width:900px){.ptiles{grid-template-columns:repeat(2,1fr)}.pwall{grid-template-columns:1fr}.pbar{grid-template-columns:1fr auto;gap:8px 16px}.pbar .ptrack{grid-column:1/-1;grid-row:2}}

/* Wall review (board/review/index.html). Kristen's eyes only, light theme. */
.review{max-width:900px;padding-block:8px 48px}
.review h1{font-size:clamp(30px,4vw,44px);font-weight:400;margin-top:8px}
.review h2{font-size:24px;font-weight:500;margin-top:36px}
.review .field{max-width:none}
.review .field .row{margin-top:0}
.review .field input{max-width:360px}
.rlist{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:10px}
.ritem{padding:14px 16px;border-radius:12px;background:var(--card);border:1px solid var(--line);display:grid;gap:10px;min-width:0}
.ritem q{font-size:18px;overflow-wrap:anywhere}
.ritem .meta{font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;color:var(--muted)}
.ritem .row{margin-top:0}
.ritem .btn{font-size:15px;padding:10px 18px}
.rempty{color:var(--muted);font-style:italic;margin:10px 0 0}
.review .btn[disabled]{opacity:.45;cursor:not-allowed}

/* springboard cards, recap box */
.spring-cards{list-style:none;margin:22px 0 0;padding:0}
.spring-cards .spring-card{margin-top:16px}
.spring-card h3{text-transform:none;letter-spacing:0;font-family:var(--font-head);font-size:20px;color:var(--fg)}
.spring-panel{margin-top:16px}
.spring-panel h3{margin-top:18px}
.spring-routines{margin:12px 0 0;padding-left:22px}
.spring-routines li{margin-top:8px;font-size:16px}
.recap{margin-top:28px}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
/* Bottom-of-page buttons: Mark done, then Back and Next in pink */
.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:.4em;text-align:center}
.btn .arrow{font-size:1.1em;line-height:1}
.btn.done{background:var(--navy);color:var(--cream)}
.lbl-short{display:none}
@media (max-width:599px){.lbl-full{display:none}.lbl-short{display:inline}.navrow{flex-wrap:nowrap}.navrow .btn{flex:1 1 0;padding-inline:14px}}
.navrow .btn{max-width:100%}
.finish{margin-top:8px}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]) .btn.done{background:var(--cream);color:var(--navy)} }
:root[data-theme="dark"] .btn.done{background:var(--cream);color:var(--navy)}

/* Next door: the ladder. One full-width card per door, A at the top, D at the bottom. */
.ladder{list-style:none;margin:20px 0;padding:0;display:flex;flex-direction:column;gap:10px}
.ladder .rung{display:flex;flex-direction:column;gap:4px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--card)}
.ladder .rung-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 10px}
.ladder .rung b{font-family:var(--font-head);color:var(--accent)}
/* The person's door: Storm Navy with cream text (cream with navy text in dark), and a bold pink tag. */
.ladder .rung.here{background:var(--navy);border:2px solid var(--navy);color:var(--cream)}
.ladder .rung.here b{color:var(--cream);font-size:1.1em}
.ladder .rung .here-tag{font-family:var(--font-head);font-weight:700;font-size:15px;letter-spacing:.08em;text-transform:uppercase;background:var(--pink);color:var(--navy);padding:4px 12px;border-radius:999px}
/* The next door: rose outline and a light rose tint, with one short ready line. */
.ladder .rung.next{border:2px solid var(--rose);background:rgba(201,68,122,.1)}
.ladder .rung .ready-short{font-weight:600;color:var(--fg);margin-top:2px}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]) .ladder .rung.here{background:var(--cream);border-color:var(--cream);color:var(--navy)} :root:not([data-theme="light"]) .ladder .rung.here b{color:var(--navy)} :root:not([data-theme="light"]) .ladder .rung.next{background:rgba(255,107,157,.14)} }
:root[data-theme="dark"] .ladder .rung.here{background:var(--cream);border-color:var(--cream);color:var(--navy)}
:root[data-theme="dark"] .ladder .rung.here b{color:var(--navy)}
:root[data-theme="dark"] .ladder .rung.next{background:rgba(255,107,157,.14)}
.finished-card{margin:0 0 20px;padding:14px 16px;border:2px solid var(--accent);border-radius:12px}
.finished-card h2{margin:0 0 6px}