/* Layout: a one-page sales sheet for a CTO. Every section is a two-column editorial grid, a
   heading rail on the left and the content on the right, that stacks on phones. The hero pairs
   the thesis with a real skill file, the unit the workshop is about. One committed light theme. */
:root {
  color-scheme: light;

  --paper: #f5f7f5;
  --surface: #e9eeea;
  --line: #cfd7d2;
  --ink: #15201b;
  --muted: #4f5c56;
  --accent: #157a4f;
  --accent-strong: #0f5f3d;
  --on-accent: #ffffff;
  --warn: #a7452a;

  /* The inverted band at the end and the skill file use these on top of --ink. */
  --ink-muted: #a9b5ae;
  --ink-soft: #dfe6e1;
  --ok: #8fe0b7;
  --error: #f0b6a4;

  --font-display: "Schibsted Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --measure: 36rem;
  --page-width: 72rem;
  --gutter-left: max(16px, env(safe-area-inset-left, 0px));
  --gutter-right: max(16px, env(safe-area-inset-right, 0px));
  --program-columns: minmax(0, 12rem) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
}

@font-face {
  font-family: "Schibsted Grotesk";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/fonts/schibsted-grotesk-latin-500-normal.woff2") format("woff2");
}

@font-face {
  font-family: "Schibsted Grotesk";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/fonts/schibsted-grotesk-latin-700-normal.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/ibm-plex-sans-latin-400-italic.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");
}

/* Base */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem / 1.6 var(--font-body);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.15;
  text-wrap: balance;
}

p {
  margin: 0;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.top-inner,
.hero,
.section,
.book-inner,
.foot-inner {
  max-width: var(--page-width);
  margin-inline: auto;
  padding-left: var(--gutter-left);
  padding-right: var(--gutter-right);
}

.eyebrow {
  font: 400 0.75rem / 1.5 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.lead {
  font-size: 1.1875rem;
  line-height: 1.55;
  max-width: var(--measure);
}

.big-text {
  font-size: 1.25rem;
  line-height: 1.5;
  max-width: 38rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.4rem;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: var(--on-accent);
  font: 600 1rem / 1.2 var(--font-body);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.button:hover {
  background: var(--accent-strong);
}

.button:disabled {
  cursor: default;
  opacity: 0.6;
}

.button-small {
  padding: 0.55rem 1rem;
  font-size: 0.9375rem;
}

.text-link {
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

/* Top bar */

.top {
  border-bottom: 1px solid var(--line);
}

.top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.1rem;
}

.brand {
  font: 700 1.125rem / 1 var(--font-display);
  letter-spacing: -0.01em;
  text-decoration: none;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.top-nav a:not(.button) {
  color: var(--muted);
  font-size: 0.9375rem;
  text-decoration: none;
}

.top-nav a:not(.button):hover {
  color: var(--ink);
}

/* Hero */

.kicker {
  max-width: var(--measure);
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.5;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 3rem 4rem;
  align-items: center;
  padding-block: 4.5rem;
}

.hero-text {
  display: grid;
  gap: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.375rem, 1.2rem + 4vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
}

.hero-proof {
  display: grid;
  gap: 1.5rem;
  min-width: 0;
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.hero-proof .kicker {
  font-size: 0.9375rem;
}

.figures {
  display: grid;
  gap: 1.25rem;
  margin: 0;
}

.figure {
  display: grid;
  gap: 0.25rem;
}

.figure dt {
  font: 400 0.75rem / 1.5 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.figure dd {
  margin: 0;
  font: 500 clamp(1.75rem, 1rem + 2.5vw, 2.5rem) / 1 var(--font-display);
  letter-spacing: -0.02em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.figure-after dd {
  font-size: clamp(2.75rem, 1rem + 4.5vw, 4.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--accent);
}

.proof-note {
  max-width: var(--measure);
  font-size: 0.9375rem;
  color: var(--ink);
}

/* Sections */

.section {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: 2rem 4rem;
  padding-block: 4.5rem;
  border-top: 1px solid var(--line);
}

.section-head {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.section-head h2 {
  font-size: clamp(1.75rem, 1rem + 2.2vw, 2.5rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.section-intro {
  max-width: 28rem;
  color: var(--muted);
}

.section-body {
  display: grid;
  gap: 1.5rem;
  max-width: 44rem;
  min-width: 0;
}

.section-body > p {
  max-width: var(--measure);
}

.section-wide {
  grid-template-columns: minmax(0, 1fr);
}

.section-wide .section-head {
  max-width: 40rem;
}

.section-wide .section-body {
  max-width: none;
}

.columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
}

.column {
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.column h3 {
  font-size: 1.25rem;
}

.list-title {
  margin-top: 1rem;
  font-size: 1.25rem;
}

.blocks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem 2rem;
}

.blocks li {
  display: grid;
  gap: 0.35rem;
  align-content: start;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.blocks h4 {
  font-size: 1.0625rem;
}

.blocks p {
  font-size: 0.9375rem;
  color: var(--muted);
}

/* Program */

.day-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
  margin-top: 1rem;
  font-size: 1.375rem;
  font-weight: 700;
}

.day-number {
  font: 400 0.75rem / 1.5 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.program-head {
  display: none;
}

.program {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.pass {
  display: grid;
  gap: 0.75rem 1.5rem;
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.pass h4 {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-size: 1.0625rem;
  line-height: 1.3;
}

.pass-number {
  flex: none;
  min-width: 1.25rem;
  font: 400 0.8125rem / 1 var(--font-mono);
  color: var(--muted);
}

.pass-cell {
  display: grid;
  gap: 0.25rem;
  align-content: start;
}

.pass-cell p {
  font-size: 0.9375rem;
  line-height: 1.5;
}

.pass-insight p {
  font-style: italic;
}

.pass-label {
  font: 400 0.6875rem / 1.5 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.after {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--ink);
}

.after-item {
  display: grid;
  gap: 0.5rem;
  align-content: start;
}

.after-item h3 {
  font-size: 1.125rem;
}

.after-item p {
  font-size: 0.9375rem;
  color: var(--muted);
}

/* The promise, the list of what we skip, the questions */

.promise {
  margin: 0;
  padding-left: 1.25rem;
  display: grid;
  gap: 0.5rem;
  max-width: var(--measure);
}

.promise li::marker {
  color: var(--accent);
}

.not-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.not-list li {
  font: 700 clamp(1.5rem, 1rem + 1.8vw, 2.25rem) / 1.15 var(--font-display);
  letter-spacing: -0.02em;
}

.not-list li::before {
  content: "";
  display: inline-block;
  width: 0.6em;
  height: 0.12em;
  margin-right: 0.45em;
  vertical-align: middle;
  background: var(--warn);
}

.faq {
  margin: 0;
  display: grid;
}

.faq-item {
  display: grid;
  gap: 0.5rem;
  padding-block: 1.25rem;
  border-top: 1px solid var(--line);
}

.faq-item:last-child {
  border-bottom: 1px solid var(--line);
}

.faq dt {
  font: 500 1.125rem / 1.3 var(--font-display);
}

.faq dd {
  margin: 0;
  max-width: var(--measure);
}

/* Booking */

.book {
  background: var(--ink);
  color: var(--paper);
}

.book :focus-visible {
  outline-color: var(--paper);
}

.book-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 3rem 4rem;
  align-items: center;
  padding-block: 4.5rem;
}

.book-text {
  display: grid;
  gap: 1rem;
}

.book .eyebrow {
  color: var(--ink-muted);
}

.book h2 {
  font-size: clamp(2rem, 1rem + 3vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.book .lead {
  color: var(--ink-soft);
}

.signup {
  display: grid;
  gap: 0.75rem;
  min-width: 0;
}

.signup label {
  font: 400 0.75rem / 1.5 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.signup-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.signup input {
  flex: 1 1 14rem;
  min-width: 0;
  padding: 0.85rem 1rem;
  border: 1px solid transparent;
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
  font: 400 1rem / 1.2 var(--font-body);
}

.signup input[aria-invalid="true"] {
  border-color: var(--error);
}

.signup-trap {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.signup-status {
  min-height: 1.5rem;
  font-size: 0.9375rem;
}

.signup-status[data-kind="pending"] {
  color: var(--ink-muted);
}

.signup-status[data-kind="error"] {
  color: var(--error);
}

.signup-status[data-kind="success"] {
  color: var(--ok);
  font-weight: 600;
}

.signup-privacy {
  max-width: 30rem;
  font-size: 0.8125rem;
  color: var(--ink-muted);
}

.signup.is-done .signup-row,
.signup.is-done .signup-privacy {
  display: none;
}

/* Footer */

.foot {
  border-top: 1px solid var(--line);
}

.foot-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.5rem;
  font-size: 0.875rem;
  color: var(--muted);
}

/* Narrow screens */

@media (max-width: 880px) {
  .hero,
  .section,
  .book-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    padding-block: 3rem;
  }

  .section {
    gap: 1.5rem;
    padding-block: 3rem;
  }

  .after {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 881px) {
  .program-head {
    display: grid;
    grid-template-columns: var(--program-columns);
    gap: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--ink);
    font: 400 0.6875rem / 1.5 var(--font-mono);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
  }

  .pass {
    grid-template-columns: var(--program-columns);
    gap: 1.5rem;
    align-items: start;
  }

  .pass-label {
    display: none;
  }
}

@media (max-width: 640px) {
  .top-nav a:not(.button) {
    display: none;
  }

  .columns,
  .blocks {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-proof {
    padding: 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .button {
    transition: none;
  }
}