/* Press Run Labs site. The look of the courses: computation-pad paper, navy ink, one cobalt accent. */

@font-face { font-family: "B612"; src: url("fonts/b612-normal-400-latin.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "B612"; src: url("fonts/b612-normal-700-latin.woff2") format("woff2"); font-weight: 700; font-display: swap; }
@font-face { font-family: "B612 Mono"; src: url("fonts/b612-mono-normal-400-latin.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Literata"; src: url("fonts/literata-normal-300-800-latin.woff2") format("woff2"); font-weight: 300 800; font-display: swap; }

:root {
  color-scheme: light;
  --paper: #edf1e7;
  --sheet: #f7f9f4;
  --grid: #d3decb;
  --grid-strong: #b9cbae;
  --ink: #1d2b45;
  --muted: #56606b;
  --cobalt: #2747c9;
  --cobalt-deep: #1a2f8a;
  --on-cobalt: #ffffff;
  --ok: #2f7a4a;

  --font-ui: "B612", "Segoe UI", system-ui, sans-serif;
  --font-mono: "B612 Mono", ui-monospace, Consolas, monospace;
  --font-prose: "Literata", Georgia, "Times New Roman", serif;

  --step--1: 0.875rem;
  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-2: 1.5625rem;
  --step-3: clamp(1.9rem, 1.2rem + 3vw, 3rem);
  --radius: 4px;
  --measure: 62ch;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { background: var(--paper); }
body {
  margin: 0;
  background-color: var(--paper);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  background-attachment: fixed;
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: var(--step-0);
  line-height: 1.55;
}
.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
a { color: var(--cobalt); }
a:hover { color: var(--cobalt-deep); }
:focus-visible { outline: 2px solid var(--cobalt); outline-offset: 2px; }
img, svg { max-width: 100%; }

/* header */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 20px; flex-wrap: wrap; }
.top .logo { display: block; height: 40px; width: auto; }
.top nav { display: flex; gap: 20px; align-items: center; font-size: var(--step--1); }
.top nav a { text-decoration: none; color: var(--ink); }
.top nav a.button { color: var(--on-cobalt); }

/* type */
h1, h2, h3 { font-family: var(--font-prose); font-weight: 600; line-height: 1.15; text-wrap: balance; margin: 0; }
h1 { font-size: var(--step-3); letter-spacing: -0.01em; }
h2 { font-size: var(--step-2); }
h3 { font-size: var(--step-1); }
.eyebrow { font-family: var(--font-mono); font-size: var(--step--1); letter-spacing: 0.06em; text-transform: uppercase; color: var(--cobalt); margin: 0; }
.lede { font-family: var(--font-prose); font-size: 1.15rem; max-width: var(--measure); margin: 0; }
.small { font-size: var(--step--1); color: var(--muted); }

/* buttons and the sign-up form */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-weight: 700; text-decoration: none; cursor: pointer;
  background: var(--cobalt); color: var(--on-cobalt); border: 0; border-radius: var(--radius);
  padding: 12px 20px; min-height: 46px; box-shadow: 0 3px 0 var(--cobalt-deep);
}
.button:hover { background: #2f52dc; color: var(--on-cobalt); }
.button:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--cobalt-deep); }
.signup { display: grid; gap: 8px; max-width: 520px; }
.signup .row { display: flex; gap: 8px; flex-wrap: wrap; }
.signup label { font-size: var(--step--1); font-weight: 700; }
.signup input[type="email"] {
  flex: 1 1 220px; min-width: 0; font: inherit; padding: 12px 14px; min-height: 46px;
  border: 1px solid var(--grid-strong); border-radius: var(--radius); background: #ffffff; color: var(--ink);
}

/* sections */
section { padding-block: 40px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 40px; align-items: center; padding-block: 24px 48px; }
.hero .copy { display: grid; gap: 20px; min-width: 0; }

/* the lab sheet: a real recorded answer */
.lab { background: var(--sheet); border: 1px solid var(--grid-strong); border-radius: var(--radius); padding: 20px; display: grid; gap: 14px; min-width: 0; box-shadow: 0 1px 0 var(--grid-strong); }
.lab p { margin: 0; }
.lab .label { font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); letter-spacing: 0.04em; text-transform: uppercase; }
.lab blockquote { margin: 0; font-family: var(--font-prose); font-size: 1.05rem; border-left: 3px solid var(--cobalt); padding: 4px 0 4px 14px; }
.lab ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; font-size: var(--step--1); }
.lab li span { display: block; font-family: var(--font-mono); color: var(--muted); }
.result { display: grid; gap: 10px; }
.answer { display: grid; grid-template-columns: 7.5rem minmax(0, 1fr) 3.5rem; gap: 10px; align-items: center; font-size: var(--step--1); }
.answer b { font-weight: 700; }
.bar { height: 10px; background: var(--grid); border-radius: 5px; overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; background: var(--cobalt); border-radius: 5px; transition: width 600ms ease-out; }
.answer .pct { font-family: var(--font-mono); text-align: right; font-variant-numeric: tabular-nums; }
.lab .meta { font-size: 0.8rem; color: var(--muted); }
.lab .waiting { color: var(--muted); font-size: var(--step--1); margin: 0; }

/* the "try one" tabs */
.tabs { display: flex; gap: 6px; flex-wrap: wrap; border-bottom: 1px solid var(--grid-strong); }
.tabs [role="tab"] {
  font: inherit; font-size: var(--step--1); font-weight: 700; color: var(--muted); background: none; cursor: pointer;
  border: 0; border-bottom: 3px solid transparent; padding: 8px 4px; margin-bottom: -1px; min-height: 40px;
}
.tabs [role="tab"][aria-selected="true"] { color: var(--ink); border-bottom-color: var(--cobalt); }
.panel { display: grid; gap: 14px; }

/* predict, then reveal */
.predict { display: grid; gap: 10px; }
.predict .q { font-family: var(--font-prose); font-size: 1.05rem; margin: 0; }
.predict .options { display: grid; gap: 8px; }
.predict button[data-choice] {
  font: inherit; text-align: left; cursor: pointer; padding: 10px 14px; min-height: 44px;
  background: #ffffff; color: var(--ink); border: 1px solid var(--grid-strong); border-radius: var(--radius);
}
.predict button[data-choice]:hover:not(:disabled) { border-color: var(--cobalt); }
.predict button[data-choice]:disabled { cursor: default; }
.predict button.is-picked { border-color: var(--ink); }
.predict button.is-right { border-color: var(--ok); box-shadow: inset 4px 0 0 var(--ok); }
.reveal { display: grid; gap: 6px; font-family: var(--font-prose); }
.reveal .verdict { font-family: var(--font-ui); font-weight: 700; }
.reveal .src { font-family: var(--font-ui); font-size: 0.8rem; color: var(--muted); }

/* course cards */
.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 20px; }
.card { background: var(--sheet); border: 1px solid var(--grid-strong); border-radius: var(--radius); padding: 22px; display: grid; gap: 10px; align-content: start; }
.card p { margin: 0; font-family: var(--font-prose); }
.card .eyebrow, .card .price { font-family: var(--font-mono); }
.card .price b { font-size: var(--step-1); }

/* how a lesson works */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 20px; padding: 0; list-style: none; counter-reset: step; }
.steps li { background: var(--sheet); border: 1px solid var(--grid); border-radius: var(--radius); padding: 18px; display: grid; gap: 6px; align-content: start; counter-increment: step; }
.steps li::before { content: counter(step); font-family: var(--font-mono); color: var(--cobalt); font-weight: 700; }
.steps p { margin: 0; font-family: var(--font-prose); }

/* the course */
.course { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; background: var(--sheet); border: 1px solid var(--grid-strong); border-radius: var(--radius); padding: 28px; }
.course .copy { display: grid; gap: 14px; align-content: start; }
.course .price { font-family: var(--font-mono); font-size: var(--step--1); }
.course .price b { font-size: var(--step-1); color: var(--ink); }
.course ol { margin: 0; padding-left: 1.4em; display: grid; gap: 4px; font-family: var(--font-prose); }
.course ol li::marker { font-family: var(--font-mono); color: var(--muted); }

.join { display: grid; gap: 16px; justify-items: start; }
.next p { max-width: var(--measure); font-family: var(--font-prose); }

/* footer */
footer { border-top: 1px solid var(--grid-strong); margin-top: 24px; padding-block: 28px 40px; display: grid; gap: 12px; font-size: var(--step--1); color: var(--muted); }
footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 18px; }
footer a { color: var(--ink); }

/* plain pages (privacy, thanks) */
.page { max-width: 760px; display: grid; gap: 16px; padding-block: 24px 48px; }
.page p, .page li { font-family: var(--font-prose); max-width: var(--measure); }

@media (max-width: 820px) {
  .hero, .course, .cards { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .course { padding: 20px; }
}
@media (max-width: 460px) {
  .top nav a:not(.button) { display: none; }
  .answer { grid-template-columns: 6rem minmax(0, 1fr) 3rem; }
}
@media (prefers-reduced-motion: reduce) {
  .bar i { transition: none; }
  .button:active { transform: none; }
}