/* ============================================================
   MEASURE — a course on typography for screens
   Aesthetic: editorial letterpress. Paper, ink, one vermilion.
   ============================================================ */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
img, svg { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }

/* ---------- tokens ---------- */
:root {
  --paper:      #F2ECE1;
  --paper-2:    #E8DFD0;
  --paper-3:    #DCD1BE;
  --ink:        #14110D;
  --ink-2:      #3B342B;
  --ink-3:      #6E6455;
  --vermilion:  #C6402A;
  --vermilion-d:#9E3021;
  --rule:       #C9BCA5;

  --display: "Fraunces", "Hoefler Text", Georgia, serif;
  --text:    "Newsreader", Georgia, "Times New Roman", serif;
  --mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --gutter: clamp(1.25rem, 5vw, 5rem);
  --max: 1280px;

  --ease: cubic-bezier(.22, .72, .22, 1);
}

/* ---------- base ---------- */
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--text);
  font-optical-sizing: auto;
  font-size: clamp(1.0625rem, 0.4vw + 0.96rem, 1.1875rem);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* paper grain */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: .22;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)' opacity='.32'/%3E%3C/svg%3E");
}

/* soft vignette so the paper feels lit, not flat */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  background: radial-gradient(110% 60% at 50% -15%, rgba(255,252,244,.22), transparent 60%),
              radial-gradient(100% 55% at 50% 118%, rgba(60,48,32,.07), transparent 65%);
}

::selection { background: var(--vermilion); color: var(--paper); }

/* ---------- type ---------- */
h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 600;
  font-variation-settings: "SOFT" 0, "WONK" 1;
  line-height: .96;
  letter-spacing: -0.022em;
  text-wrap: balance;
}

.eyebrow, .label {
  font-family: var(--mono);
  font-size: .6875rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}

.lede {
  font-size: clamp(1.25rem, 1.1vw + 1.05rem, 1.6rem);
  line-height: 1.45;
  color: var(--ink-2);
  text-wrap: pretty;
}

.num {
  font-family: var(--mono);
  font-size: .6875rem;
  letter-spacing: .1em;
  color: var(--vermilion);
}

a { color: inherit; }

.link {
  text-decoration: none;
  background-image: linear-gradient(var(--vermilion), var(--vermilion));
  background-repeat: no-repeat;
  background-size: 0% 1px;
  background-position: 0 100%;
  transition: background-size .45s var(--ease);
  padding-bottom: 2px;
  border-bottom: 1px solid var(--rule);
}
.link:hover { background-size: 100% 1px; }

/* ---------- layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.rule { border: 0; border-top: 1px solid var(--rule); }

section { position: relative; }

.section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
  padding-block: clamp(3.5rem, 7vw, 6.5rem) clamp(1.75rem, 3vw, 2.75rem);
}
.section-head h2 {
  font-size: clamp(2.1rem, 4.6vw, 3.9rem);
}

/* ---------- header ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 500;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px) saturate(120%);
  border-bottom: 1px solid var(--rule);
}
.masthead .wrap {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
  padding-block: 1rem;
}
.wordmark {
  font-family: var(--display);
  font-variation-settings: "SOFT" 0, "WONK" 1;
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -.03em;
  text-decoration: none;
  line-height: 1;
}
.wordmark sup {
  font-family: var(--mono);
  font-size: .5rem;
  letter-spacing: .12em;
  color: var(--vermilion);
  vertical-align: super;
  margin-left: .3rem;
}
.nav {
  margin-left: auto;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .45rem clamp(.8rem, 2vw, 2rem);
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.nav a { text-decoration: none; color: var(--ink-2); position: relative; padding-bottom: .2rem; }
.nav a::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--vermilion);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.nav a:hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav a[aria-current="page"] { color: var(--ink); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  text-decoration: none;
  padding: .85rem 1.4rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  transition: background .35s var(--ease), color .35s var(--ease), transform .35s var(--ease);
}
.btn:hover { background: var(--vermilion); border-color: var(--vermilion); transform: translateY(-2px); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn--sm { padding: .6rem 1rem; font-size: .66rem; }

/* ---------- hero ---------- */
.hero { padding-block: clamp(3rem, 9vw, 8rem) clamp(2rem, 5vw, 4rem); }
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem 1.25rem;
  align-items: center;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}
.hero-meta .dot { width: 4px; height: 4px; background: var(--vermilion); border-radius: 50%; }

/* the specimen: giant word that flexes its variable axes */
.specimen {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(4.4rem, 21vw, 17rem);
  line-height: .82;
  letter-spacing: -.05em;
  margin-left: -.04em;
  font-variation-settings: "SOFT" 0, "WONK" 1, "opsz" 144;
  animation: axes 14s var(--ease) infinite alternate;
}
@keyframes axes {
  0%   { font-variation-settings: "SOFT" 0,   "WONK" 1, "opsz" 144; }
  50%  { font-variation-settings: "SOFT" 70,  "WONK" 0, "opsz" 60;  }
  100% { font-variation-settings: "SOFT" 18,  "WONK" 1, "opsz" 144; }
}
.specimen span { display: inline-block; }
.specimen span:hover { color: var(--vermilion); }

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: clamp(1.75rem, 4vw, 3rem);
  align-items: end;
}
@media (min-width: 860px) {
  .hero-grid { grid-template-columns: 1.15fr .85fr; }
}
.hero-cta { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.stats div { padding: 1.1rem 0; border-right: 1px solid var(--rule); padding-right: 1rem; }
.stats div:last-child { border-right: 0; }
.stats b {
  display: block;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.9rem, 3.4vw, 2.75rem);
  line-height: 1;
  font-variation-settings: "SOFT" 0, "WONK" 1;
}
.stats span { font-family: var(--mono); font-size: .62rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); }

/* ---------- marquee ---------- */
.marquee {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  overflow: hidden;
  padding-block: .9rem;
  background: var(--paper-2);
}
.marquee-track {
  display: flex;
  gap: 2.5rem;
  width: max-content;
  animation: slide 46s linear infinite;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-3);
  white-space: nowrap;
}
.marquee-track i { color: var(--vermilion); font-style: normal; }
@keyframes slide { to { transform: translateX(-50%); } }

/* ---------- editorial two-col ---------- */
.editorial {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  padding-block: clamp(3rem, 7vw, 6rem);
  border-top: 1px solid var(--rule);
}
@media (min-width: 860px) {
  .editorial { grid-template-columns: 1fr 1fr; }
}
.editorial h2 { font-size: clamp(2rem, 4.2vw, 3.4rem); }
.editorial .col p + p { margin-top: 1.1rem; }
.dropcap::first-letter {
  float: left;
  font-family: var(--display);
  font-weight: 700;
  font-size: 4.2em;
  line-height: .78;
  padding: .06em .12em 0 0;
  color: var(--vermilion);
  font-variation-settings: "SOFT" 0, "WONK" 1;
}

/* ---------- outcomes ---------- */
.grid-cards {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
@media (min-width: 640px) { .grid-cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .grid-cards { grid-template-columns: repeat(3, 1fr); } }
.card {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: clamp(1.4rem, 2.5vw, 2.1rem);
  position: relative;
  transition: background .4s var(--ease);
}
.card:hover { background: var(--paper-2); }
.card h3 { font-size: 1.32rem; margin: .7rem 0 .5rem; letter-spacing: -.015em; }
.card p { font-size: .97rem; color: var(--ink-2); line-height: 1.55; }

/* ---------- module list ---------- */
.modules { border-top: 1px solid var(--rule); }
.module {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  padding: clamp(1.3rem, 2.6vw, 2rem) 0;
  border-bottom: 1px solid var(--rule);
  align-items: start;
  transition: padding-left .5s var(--ease), background .4s var(--ease);
}
.module:hover { padding-left: .9rem; background: linear-gradient(90deg, var(--paper-2), transparent 70%); }
/* narrow: everything after the number stacks in the content column */
.module > :nth-child(n + 2) { grid-column: 2; }
@media (min-width: 860px) {
  .module { grid-template-columns: 5rem minmax(0, 20rem) minmax(0, 1fr); gap: clamp(1rem, 3vw, 3rem); align-items: baseline; }
  .module > :nth-child(n + 2) { grid-column: auto; }
}
.module h3 { font-size: clamp(1.4rem, 2.4vw, 2rem); }
.module .meta { font-family: var(--mono); font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin-top: .5rem; }
.module p { color: var(--ink-2); font-size: 1rem; }
.module ol {
  margin: .9rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .45rem;
  counter-reset: lesson;
}
.module ol li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: .5rem;
  font-size: .95rem;
  color: var(--ink-2);
  padding-bottom: .45rem;
  border-bottom: 1px dotted var(--rule);
}
.module ol li::before {
  counter-increment: lesson;
  content: counter(lesson, decimal-leading-zero);
  font-family: var(--mono);
  font-size: .66rem;
  color: var(--ink-3);
  letter-spacing: .08em;
  padding-top: .35rem;
}

/* ---------- quotes ---------- */
.quotes {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}
@media (min-width: 900px) { .quotes { grid-template-columns: repeat(3, 1fr); } }
.quote { border-top: 2px solid var(--ink); padding-top: 1.1rem; }
.quote blockquote {
  font-family: var(--display);
  font-size: clamp(1.15rem, 1.5vw, 1.4rem);
  line-height: 1.28;
  letter-spacing: -.015em;
  font-variation-settings: "SOFT" 20, "WONK" 0;
  font-weight: 500;
}
.quote figcaption { margin-top: 1rem; font-family: var(--mono); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }

/* ---------- portrait / instructor ---------- */
.portrait {
  aspect-ratio: 4 / 5;
  background:
    repeating-linear-gradient(-45deg, var(--paper-3) 0 2px, transparent 2px 9px),
    linear-gradient(160deg, var(--paper-2), var(--paper-3));
  border: 1px solid var(--rule);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.portrait span {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(4rem, 12vw, 9rem);
  color: var(--ink);
  opacity: .12;
  font-variation-settings: "SOFT" 0, "WONK" 1;
  letter-spacing: -.05em;
}
.portrait em {
  position: absolute;
  bottom: .8rem; left: .9rem;
  font-family: var(--mono);
  font-style: normal;
  font-size: .6rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ---------- pricing ---------- */
.plans {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
@media (min-width: 800px) { .plans { grid-template-columns: repeat(2, 1fr); } }
.plan { background: var(--paper); padding: clamp(1.5rem, 3vw, 2.5rem); display: flex; flex-direction: column; }
.plan--feature { background: var(--ink); color: var(--paper); }
.plan--feature .label, .plan--feature li { color: var(--paper-3); }
.plan--feature .btn { background: var(--vermilion); border-color: var(--vermilion); color: var(--paper); }
.plan--feature .btn:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.price {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(3rem, 6vw, 4.6rem);
  line-height: 1;
  letter-spacing: -.04em;
  font-variation-settings: "SOFT" 0, "WONK" 1;
  margin: 1rem 0 .25rem;
}
.price small { font-family: var(--mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; vertical-align: super; }
.plan ul { list-style: none; padding: 0; margin: 1.4rem 0 2rem; display: grid; gap: .6rem; font-size: .97rem; color: var(--ink-2); }
.plan ul li { display: grid; grid-template-columns: 1.2rem 1fr; gap: .5rem; }
.plan ul li::before { content: "—"; color: var(--vermilion); }
.plan .btn { margin-top: auto; justify-content: center; }

/* ---------- faq ---------- */
.faq { border-top: 1px solid var(--rule); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 1.35rem 3rem 1.35rem 0;
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.1rem, 1.8vw, 1.45rem);
  letter-spacing: -.015em;
  font-variation-settings: "SOFT" 10, "WONK" 0;
  position: relative;
  transition: color .3s var(--ease);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--vermilion); }
.faq summary::after {
  content: "+";
  position: absolute; right: .2rem; top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--vermilion);
  transition: transform .4s var(--ease);
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq .answer { padding: 0 0 1.5rem; max-width: 62ch; color: var(--ink-2); }

/* ---------- form ---------- */
.form { display: grid; gap: 1.1rem; max-width: 34rem; }
.field { display: grid; gap: .4rem; }
.field input, .field select, .field textarea {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--ink-3);
  padding: .6rem 0;
  font-family: var(--text);
  font-size: 1.05rem;
  outline: none;
  transition: border-color .3s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--vermilion); }
.note {
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-3);
  border-left: 2px solid var(--vermilion);
  padding-left: .7rem;
  line-height: 1.7;
}

/* ---------- CTA band ---------- */
.band {
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(3.5rem, 8vw, 7rem);
  margin-top: clamp(3rem, 7vw, 6rem);
}
.band h2 { font-size: clamp(2.4rem, 7vw, 5.5rem); letter-spacing: -.04em; }
.band .lede { color: var(--paper-3); }
.band .btn { background: var(--vermilion); border-color: var(--vermilion); color: var(--paper); }
.band .btn:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }

/* ---------- footer ---------- */
.footer { background: var(--ink); color: var(--paper-3); padding-block: clamp(2.5rem, 5vw, 4rem) 2rem; }
.footer .cols { display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 780px) { .footer .cols { grid-template-columns: 2fr 1fr 1fr; } }
.footer a { color: var(--paper-3); text-decoration: none; }
.footer a:hover { color: var(--vermilion); }
.footer ul { list-style: none; padding: 0; display: grid; gap: .5rem; font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; }
.footer .colophon {
  margin-top: clamp(2rem, 4vw, 3.5rem);
  padding-top: 1.2rem;
  border-top: 1px solid rgba(242,236,225,.16);
  display: flex; flex-wrap: wrap; gap: .6rem 1.5rem;
  font-family: var(--mono); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase;
  color: rgba(242,236,225,.5);
}
.footer .wordmark { color: var(--paper); font-size: 2rem; }

/* ---------- page hero (inner pages) ---------- */
.page-hero { padding-block: clamp(2.5rem, 6vw, 5rem) clamp(1.5rem, 3vw, 3rem); }
.page-hero h1 { font-size: clamp(2.8rem, 9vw, 7rem); letter-spacing: -.045em; }
.page-hero .lede { max-width: 46ch; margin-top: 1.4rem; }

/* ---------- reveal ---------- */
.js .reveal { opacity: 0; transform: translateY(18px); }
.js .reveal.in {
  opacity: 1;
  transform: none;
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  transition-delay: var(--d, 0s);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .specimen, .marquee-track { animation: none; }
  .js .reveal { opacity: 1; transform: none; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* ---------- a11y ---------- */
:focus-visible { outline: 2px solid var(--vermilion); outline-offset: 3px; }
.skip {
  position: absolute; left: -9999px;
  background: var(--ink); color: var(--paper);
  padding: .7rem 1rem; z-index: 1000;
  font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
}
.skip:focus { left: var(--gutter); top: .5rem; }