/* Traversaal Academy · shared tokens and components.
   Tokens follow fde.traversaal.ai (app/brand.css), the site this course sits in:
   white ground, cool ink, coral fields with ink text on them (white on coral
   fails AA), Geist for everything and Geist Mono for labels. No serif. */

:root {
  --paper: #FFFFFF;
  --paper-2: #F4F5F7;          /* the site's mist */
  --paper-3: #E9EBEF;
  --card: #FFFFFF;
  --ink: #0F1013;
  --ink-2: #43464F;
  --muted: #5F636E;
  --faint: rgba(15, 16, 19, .42);
  --line: rgba(15, 16, 19, .1);
  --line-2: rgba(15, 16, 19, .16);
  --night: #0F1013;
  --night-2: #1B1D22;
  --cream: #E8EAEE;
  --coral: #FF6A4D;
  --coral-hi: #FF8F75;         /* coral on dark */
  --coral-deep: #C9300F;       /* coral text on white, AA */
  --coral-aa: #C9300F;         /* links and labels; on a coral field the text is ink */
  --coral-wash: rgba(255, 106, 77, .1);
  --coral-line: rgba(255, 106, 77, .32);
  --ok: #1F7A43;
  --e: cubic-bezier(.16, 1, .3, 1);
  --e-io: cubic-bezier(.65, 0, .35, 1);
  --serif: 'Geist', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;  /* display type */
  --sans: 'Geist', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'Geist Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  --r-sm: 8px;
  --r: 14px;
  --r-lg: 22px;
  --shadow-1: 0 1px 0 rgba(15, 16, 19, .04), 0 12px 32px -22px rgba(15, 16, 19, .45);
  --shadow-2: 0 40px 90px -45px rgba(15, 16, 19, .55);
  --gutter: clamp(16px, 4vw, 40px);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; background: var(--paper); }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 15px/1.6 var(--sans); letter-spacing: -.006em;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, video, canvas, svg { display: block; max-width: 100%; }
/* The rule above outranks the browser's own [hidden] { display: none }, which
   left a "hidden" black still image sitting on top of the video. */
[hidden] { display: none !important; }
button { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
::selection { background: rgba(255, 106, 77, .22); }
:where(button, a, input, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--coral); outline-offset: 2px; border-radius: 6px;
}
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

/* ---------- type ---------- */
.serif { font-family: var(--serif); font-weight: 600; letter-spacing: -.03em; }
/* Emphasis in a heading is a coral field, as in the site's hero (Geist has no italic). */
.serif em, em.serif, .lib-head h1 em, .box h1 em, .empty h3 em, .cg-t em {
  font-style: normal; color: var(--ink); padding: 0 .12em; margin: 0 -.03em; border-radius: .12em;
  background: linear-gradient(180deg, transparent 12%, var(--coral) 12%, var(--coral) 94%, transparent 94%);
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
}
.mono { font-family: var(--mono); letter-spacing: 0; font-feature-settings: "zero" 0; }
.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--coral-deep);
}
.eyebrow.dim { color: var(--muted); }
.balance { text-wrap: balance; }
.pretty { text-wrap: pretty; }
.tnum { font-variant-numeric: tabular-nums; }

/* ---------- buttons ---------- */
.btn {
  appearance: none; border: 0; cursor: pointer; display: inline-flex; align-items: center; gap: .5rem;
  font-size: 14px; font-weight: 600; line-height: 1; padding: .95rem 1.35rem; border-radius: 999px;
  transition: transform .25s var(--e), background-color .2s ease, color .2s ease, box-shadow .25s var(--e), border-color .2s ease;
  white-space: nowrap;
}
.btn svg { width: 15px; height: 15px; flex: none; transition: transform .3s var(--e); }
.btn:hover svg.arrow { transform: translateX(3px); }
.btn-coral { background: var(--coral); color: var(--ink); box-shadow: 0 14px 26px -16px rgba(15, 16, 19, .55); }
.btn-coral:hover { transform: translateY(-2px); box-shadow: 0 18px 32px -16px rgba(15, 16, 19, .6); }
.btn-ghost-dark { background: rgba(255, 255, 255, .06); color: #fff; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .22); }
.btn-ghost-dark:hover { background: rgba(255, 255, 255, .12); }
.btn-ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1px var(--line-2); }
.btn-ghost:hover { background: rgba(15, 16, 19, .04); }
.btn-ink { background: var(--ink); color: var(--paper); }
.btn-ink:hover { background: #000; transform: translateY(-1px); }
.btn-sm { font-size: 13px; padding: .65rem 1rem; }
.link-arrow { display: inline-flex; align-items: center; gap: .35rem; font-weight: 600; color: var(--coral-aa); white-space: nowrap; }
.link-arrow svg { width: 16px; height: 16px; }
.link-arrow:hover { color: #A82508; }

/* ---------- brand lockup ---------- */
.brand { display: inline-flex; align-items: center; gap: .7rem; line-height: 1; color: var(--ink); }
.brand-logo { height: 22px; width: auto; flex: none; }
.brand-rule { width: 1px; height: 16px; background: currentColor; opacity: .22; }
.brand-sub { font-family: var(--mono); font-size: 10.5px; letter-spacing: .16em; text-transform: uppercase; opacity: .7; padding-top: 1px; }
.brand.on-dark { color: #fff; }

/* ---------- top bar (light pages) ---------- */
.topbar {
  position: sticky; top: 0; z-index: 40; background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(14px) saturate(1.2); -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid transparent; transition: border-color .25s ease;
}
.topbar.scrolled { border-bottom-color: var(--line); }
.topbar-in { display: flex; align-items: center; gap: 1rem; height: 64px; padding: 0 var(--gutter); max-width: 1440px; margin: 0 auto; }
.topbar .spacer { flex: 1; }
.crumb { display: flex; align-items: center; gap: .6rem; font-size: 13px; color: var(--muted); min-width: 0; }
.crumb a:hover { color: var(--ink); }
.crumb .sep { width: 1px; height: 18px; background: var(--line-2); }
.crumb .here { color: var(--ink); font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 560px) { .topbar .brand-rule, .topbar .brand-sub { display: none; } }
.user-slot { display: flex; align-items: center; min-width: 34px; min-height: 34px; justify-content: flex-end; }
/* the account button (academy.js mountUser): initial or photo; name, email, Sign out */
.acct { position: relative; }
.acct-btn { appearance: none; border: 0; padding: 0; width: 34px; height: 34px; border-radius: 50%; overflow: hidden; cursor: pointer; display: grid; place-items: center; background: var(--ink); color: #fff; font: 600 14px/1 var(--sans); box-shadow: 0 0 0 2px #fff, 0 0 0 3px var(--line-2); }
.acct-btn img { width: 100%; height: 100%; object-fit: cover; }
.acct-btn:focus-visible { outline: 2px solid var(--coral); outline-offset: 3px; }
.acct-menu { position: absolute; z-index: 60; right: 0; top: calc(100% + 10px); width: 240px; padding: 8px; border-radius: 14px; background: #fff; color: var(--ink); text-align: left; box-shadow: 0 0 0 1px rgba(15, 16, 19, .06), 0 24px 48px -20px rgba(15, 16, 19, .35); }
.acct-menu[hidden] { display: none; }
.acct-who { padding: 8px 10px 10px; border-bottom: 1px solid var(--line-2); margin-bottom: 6px; }
.acct-who b { display: block; font-size: 14px; font-weight: 600; }
.acct-who span { display: block; font-size: 12.5px; color: var(--ink-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.acct-out { appearance: none; border: 0; width: 100%; text-align: left; padding: 9px 10px; border-radius: 9px; background: none; color: var(--ink); font: 500 13.5px/1.2 var(--sans); cursor: pointer; }
.acct-out:hover, .acct-out:focus-visible { background: rgba(15, 16, 19, .05); }

/* ---------- chips, tags ---------- */
.tag {
  display: inline-flex; align-items: center; gap: .35rem; font-family: var(--mono); font-size: 11px;
  padding: 4px 9px; border-radius: 999px; background: rgba(15, 16, 19, .045); color: var(--ink-2);
  white-space: nowrap;
}
.tag.coral { background: var(--coral-wash); color: var(--coral-deep); }
.ts-chip {
  appearance: none; border: 1px solid var(--coral-line); background: var(--coral-wash); color: var(--coral-deep);
  display: inline-flex; align-items: center; gap: 4px; font-family: var(--mono); font-size: 11.5px; line-height: 1;
  padding: 3px 7px; border-radius: 7px; cursor: pointer; vertical-align: 1px; margin: 0 1px;
  transition: all .18s var(--e);
}
.ts-chip svg { width: 10px; height: 10px; }
.ts-chip:hover, .ts-chip.on { background: var(--coral); border-color: var(--coral); color: var(--ink); transform: translateY(-1px); }

/* ---------- reveal on scroll ---------- */
.r { opacity: 1; }
html.js .r:not(.in) { opacity: 0; transform: translateY(22px); }
html.js .r { transition: opacity .8s var(--e), transform .8s var(--e); }

/* ---------- auth pending: gated pages show nothing until the session is known ---------- */
.auth-wait { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; background: var(--paper); transition: opacity .35s ease; }
.auth-wait.gone { opacity: 0; pointer-events: none; }
.auth-wait .dots { display: flex; gap: 6px; }
.auth-wait .dots i { width: 6px; height: 6px; border-radius: 50%; background: var(--coral); animation: dot 1s var(--e-io) infinite; }
.auth-wait .dots i:nth-child(2) { animation-delay: .15s; }
.auth-wait .dots i:nth-child(3) { animation-delay: .3s; }
@keyframes dot { 0%, 100% { opacity: .25; transform: translateY(0); } 50% { opacity: 1; transform: translateY(-4px); } }

.pulse { position: relative; width: 7px; height: 7px; border-radius: 50%; background: var(--coral); flex: none; }
.pulse::after { content: ""; position: absolute; inset: 0; border-radius: 50%; animation: pulse 1.8s ease-out infinite; box-shadow: 0 0 0 0 rgba(255, 106, 77, .5); }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(255, 106, 77, .5); } 100% { box-shadow: 0 0 0 9px rgba(255, 106, 77, 0); } }

.shimmer { background: linear-gradient(90deg, var(--paper-2) 25%, var(--paper) 37%, var(--paper-2) 63%); background-size: 400% 100%; animation: sh 1.3s infinite; border-radius: 6px; }
@keyframes sh { 0% { background-position: 100% 0; } 100% { background-position: 0 0; } }

/* ---------- footer ---------- */
.foot { padding: 40px var(--gutter) 48px; }
.foot-in { max-width: 1200px; margin: 0 auto; display: flex; flex-wrap: wrap; gap: 18px 28px; align-items: center; justify-content: space-between; border-top: 1px solid var(--line); padding-top: 26px; font-size: 13px; color: var(--muted); }
.foot a:hover { color: var(--ink); }
.foot .powered { display: inline-flex; align-items: center; gap: .45rem; }
.foot .powered img { height: 15px; width: auto; opacity: .8; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto !important; }
  html.js .r:not(.in) { opacity: 1; transform: none; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

/* ---------- "explore more courses", the line at the bottom of every page ---------- */
.more-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 6px 12px; padding: 14px 18px; border-radius: 14px; background: var(--paper-2); color: var(--ink-2); font-size: 14px; text-align: center; }
.more-bar a { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--coral-aa); white-space: nowrap; }
.more-bar a:hover { color: #A82508; }
.more-bar a svg { width: 14px; height: 14px; transition: transform .3s var(--e); }
.more-bar a:hover svg { transform: translateX(3px); }
.more-bar .mb-spark { color: var(--coral); font-family: var(--mono); }
.foot .more-bar { max-width: 1200px; margin: 0 auto 22px; }

/* ---------- progress bits ---------- */
.pbar { height: 6px; border-radius: 6px; background: var(--paper-3); overflow: hidden; }
.pbar i { display: block; height: 100%; width: 0; border-radius: 6px; background: var(--coral); transition: width .6s var(--e); }
.pbar.full i { background: var(--ok); }
.done-tag { display: inline-flex; align-items: center; gap: 5px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--ok); }

/* ---------- toast ---------- */
.toast { position: fixed; z-index: 300; left: 50%; bottom: 24px; transform: translate(-50%, 20px); max-width: min(560px, calc(100vw - 32px)); padding: 11px 16px; border-radius: 12px; background: var(--night); color: var(--cream); font-size: 13.5px; line-height: 1.45; box-shadow: 0 24px 60px -20px rgba(15, 16, 19, .7); opacity: 0; pointer-events: none; transition: opacity .25s ease, transform .35s var(--e); display: flex; align-items: center; gap: 10px; }
.toast.on { opacity: 1; transform: translate(-50%, 0); }
.toast b { color: #fff; }
.toast .ok { color: #8FE0A8; font-weight: 600; }

/* ---------- course complete ---------- */
.cg { position: fixed; inset: 0; z-index: 400; display: grid; place-items: center; padding: 20px; animation: cgIn .3s ease both; }
.cg.out { animation: cgOut .3s ease both; }
@keyframes cgIn { from { opacity: 0; } }
@keyframes cgOut { to { opacity: 0; } }
.cg-scrim { position: absolute; inset: 0; background: rgba(15, 16, 19, .6); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }
.cg-card { position: relative; width: min(560px, 100%); padding: 34px 32px 30px; border-radius: 22px; background: var(--night); color: var(--cream); box-shadow: 0 50px 120px -40px rgba(0, 0, 0, .8); animation: cgPop .5s var(--e) both; overflow: visible; }
@keyframes cgPop { from { transform: translateY(18px) scale(.97); opacity: 0; } }
.cg-x { appearance: none; position: absolute; top: 14px; right: 14px; width: 34px; height: 34px; border-radius: 50%; border: 0; background: rgba(255, 255, 255, .08); color: #fff; font-size: 20px; line-height: 1; cursor: pointer; }
.cg-x:hover { background: rgba(255, 255, 255, .16); }
.cg-k { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: #8FE0A8; }
.cg-spark { color: var(--coral); font-size: 20px; letter-spacing: 0; display: inline-block; animation: spin 10s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.cg-t { margin: 14px 0 0; font-family: var(--serif); font-weight: 600; font-size: clamp(28px, 3.4vw, 40px); line-height: 1.08; letter-spacing: -.02em; color: #fff; }
.cg-p { margin: 12px 0 0; font-size: 15px; line-height: 1.65; color: rgba(255, 255, 255, .72); }
.cg-more { margin-top: 22px; padding-top: 18px; border-top: 1px solid rgba(255, 255, 255, .12); }
.cg-more p { margin: 0; font-size: 14.5px; color: rgba(255, 255, 255, .85); }
.cg-b { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 10px; }
.bit { position: absolute; left: 50%; top: 42%; pointer-events: none; font-family: var(--mono); line-height: 1; animation: bit 1.5s var(--e) forwards; }
@keyframes bit { from { transform: translate(-50%, -50%) scale(.4); opacity: 1; } to { transform: translate(calc(-50% + var(--dx)), calc(-50% + var(--dy))) rotate(var(--rot)) scale(1); opacity: 0; } }

.cg-k svg { width: 15px; height: 15px; }
.sc-next { margin-bottom: 14px; display: grid; grid-template-columns: 96px minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 10px; border-radius: 14px; background: rgba(255, 255, 255, .05); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .1); color: #fff; transition: background-color .2s ease; }
.sc-next:hover { background: rgba(255, 255, 255, .1); }
.sc-next img { width: 96px; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 8px; }
.sc-next small { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: rgba(255, 255, 255, .55); }
.sc-next b { display: block; margin-top: 4px; font-size: 15px; font-weight: 600; line-height: 1.3; }
.sc-next svg { width: 16px; height: 16px; color: var(--coral-hi); transition: transform .3s var(--e); }
.sc-next:hover svg { transform: translateX(3px); }
/* "Moment Search", wherever it is named: a link to it */
.ms-link { color: inherit; font-weight: 600; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.ms-link:hover { text-decoration-thickness: 2px; }
/* the top bar's way back (session: Back to library; library: Go back) */
.back-lib { flex: none; gap: 6px; padding: .55rem .95rem .55rem .7rem; white-space: nowrap; }
.back-lib svg { width: 15px; height: 15px; }
.back-lib .bl-short { display: none; }
/* Go back, top left (the same as the website's pages) */
.goback { display: inline-flex; align-items: center; gap: 6px; min-height: 36px; margin: 0 0 14px -8px; padding: 0 12px 0 8px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--ink-2); text-decoration: none; transition: color .2s ease, background-color .2s ease; }
.goback:hover { color: var(--ink); background: rgba(15, 16, 19, .05); }
.goback svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.brand a { color: inherit; text-decoration: none; display: inline-flex; align-items: center; }
a.brand-sub { padding: 6px 4px; margin: -6px -4px; border-radius: 6px; transition: opacity .2s ease, background-color .2s ease; }
a.brand-sub:hover { opacity: 1; background: rgba(15, 16, 19, .05); }
.revlink { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }