/* Industrolearn — design tokens */
:root {
  --bone: #F4EFE6;
  --ink: #0B0B0B;
  --paper: #FFFFFF;
  --smoke: #1A1A1A;
  --saffron: #D2451E;
  --mute: #7A736A;
  --edge: #E4DDD0;

  --font-display: "Inter Tight", "Inter", system-ui, sans-serif;
  --font-italic: "Instrument Serif", "Times New Roman", serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --max-w: 1280px;
  --gutter: clamp(20px, 4vw, 56px);
  --section-pad: clamp(72px, 12vw, 160px);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bone);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

::selection { background: var(--ink); color: var(--bone); }

/* Type ramp */
.display {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.95;
  font-size: clamp(48px, 8.5vw, 132px);
  text-wrap: balance;
}
.display em, .display .ital {
  font-family: var(--font-italic);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--saffron);
}
.h2 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  font-size: clamp(36px, 5.5vw, 72px);
  text-wrap: balance;
}
.h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  font-size: clamp(24px, 2.6vw, 36px);
}
.eyebrow {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
}
.lede {
  font-size: clamp(18px, 1.4vw, 22px);
  line-height: 1.5;
  color: var(--ink);
  max-width: 60ch;
  text-wrap: pretty;
}
.mono { font-family: var(--font-mono); }
.muted { color: var(--mute); }

/* Layout */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.section {
  padding-top: var(--section-pad);
  padding-bottom: var(--section-pad);
}
.section--sm { padding-top: clamp(48px, 7vw, 96px); padding-bottom: clamp(48px, 7vw, 96px); }
.dark { background: var(--smoke); color: var(--bone); }
.dark .muted { color: #9a9388; }
.dark .eyebrow { color: #9a9388; }

.hr {
  height: 1px;
  background: var(--edge);
  border: 0;
  margin: 0;
}
.dark .hr { background: #2b2b2b; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 22px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.005em;
  border-radius: 0;
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: transform 120ms ease, background 160ms ease, color 160ms ease;
  background: var(--ink);
  color: var(--bone);
  position: relative;
  will-change: transform;
}
.btn:hover { background: var(--saffron); border-color: var(--saffron); color: var(--paper); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--saffron); border-color: var(--saffron); color: var(--paper); }
.btn--sm { padding: 12px 20px; font-size: 13px; }
.dark .btn { background: var(--bone); color: var(--ink); border-color: var(--bone); }
.dark .btn:hover { background: var(--saffron); border-color: var(--saffron); color: var(--paper); }
.dark .btn--ghost { background: transparent; color: var(--bone); border-color: var(--bone); }
.dark .btn--ghost:hover { background: var(--saffron); color: var(--paper); border-color: var(--saffron); }

.btn .arrow {
  display: inline-block;
  transition: transform 200ms ease;
}
.btn:hover .arrow { transform: translateX(4px); }

/* Card */
.card {
  background: var(--paper);
  border: 1px solid var(--edge);
  padding: 28px;
  position: relative;
  transition: border-color 200ms ease, transform 200ms ease;
}
.card:hover { border-color: var(--ink); }
.card--dark { background: #111; border-color: #232323; color: var(--bone); }
.card--dark:hover { border-color: var(--saffron); }

/* Form */
.input {
  font-family: var(--font-body);
  font-size: 16px;
  background: var(--bone);
  border: 1px solid var(--ink);
  color: var(--ink);
  padding: 16px 18px;
  width: 100%;
  outline: none;
  transition: box-shadow 120ms ease, border-color 120ms ease;
}
.input:focus { box-shadow: 0 0 0 3px rgba(210, 69, 30, 0.25); border-color: var(--saffron); }
.dark .input { background: #111; color: var(--bone); border-color: var(--bone); }

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--mute);
  cursor: pointer;
}
.checkbox input { accent-color: var(--saffron); width: 16px; height: 16px; }

/* Tag / badge */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--edge);
  background: transparent;
  color: var(--mute);
}
.tag--ink { border-color: var(--ink); color: var(--ink); }
.tag--saffron { border-color: var(--saffron); color: var(--saffron); }
.dark .tag { border-color: #2b2b2b; color: #9a9388; }

/* Striped placeholder */
.striped {
  background:
    repeating-linear-gradient(
      135deg,
      rgba(11,11,11,0.06) 0 1px,
      transparent 1px 14px
    ),
    var(--edge);
  border: 1px solid var(--edge);
  display: flex;
  align-items: flex-end;
  padding: 18px;
  position: relative;
  color: var(--mute);
}
.striped--dark {
  background:
    repeating-linear-gradient(
      135deg,
      rgba(244,239,230,0.07) 0 1px,
      transparent 1px 14px
    ),
    #161616;
  border-color: #2b2b2b;
  color: #9a9388;
}

/* Hairline rule with eyebrow */
.rule-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--edge);
}
.dark .rule-row { border-top-color: #2b2b2b; }
.rule-row__num { font-family: var(--font-mono); font-size: 12px; color: var(--mute); width: 36px; flex: none; }

/* Italic morph for hero */
.morph-ital {
  font-family: var(--font-italic);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.02em;
  display: inline-block;
  position: relative;
}
.morph-ital--saffron { color: var(--saffron); }
.morph-ital--underline {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 800;
  letter-spacing: -0.04em;
  border-bottom: 6px solid var(--saffron);
  padding-bottom: 2px;
}
.morph-ital--fill {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 800;
  background: var(--saffron);
  color: var(--paper);
  padding: 0 0.18em;
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 700ms ease, transform 700ms ease;
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* Magnetic CTA */
.magnet {
  display: inline-block;
  transition: transform 120ms cubic-bezier(.2,.7,.3,1);
  will-change: transform;
}

/* Grid helpers */
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--5 { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 900px) {
  .grid--2, .grid--3, .grid--5 { grid-template-columns: 1fr; }
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 239, 230, 0.85);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease, background 200ms ease;
}
.nav.is-stuck { border-bottom-color: var(--edge); }
.nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.wordmark {
  font-family: "Newsreader", "Instrument Serif", Georgia, serif;
  font-weight: 500;
  letter-spacing: 0.04em;
  font-size: 22px;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  line-height: 1;
}
.wordmark > span,
.wordmark svg {
  display: inline-flex;
  align-items: center;
}
.wordmark > span { line-height: 1; }
.wordmark svg { transform: translateY(-4px); }
.wordmark .dot {
  width: 8px; height: 8px; background: var(--saffron); display: inline-block;
  align-self: center;
}
.nav__links {
  display: flex; gap: 28px; align-items: center;
  font-size: 14px;
}
.nav__links a {
  position: relative;
  padding: 6px 0;
  color: var(--ink);
}
.nav__links a:not(.btn):hover { color: var(--saffron); }
.nav__links a.btn { padding: 12px 20px; }

/* Hamburger toggle — hidden on desktop */
.nav__toggle {
  display: none;
  appearance: none;
  background: transparent;
  border: 1px solid var(--edge);
  border-radius: 8px;
  width: 40px;
  height: 36px;
  padding: 0;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}
.nav__toggle-bar {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 200ms ease, opacity 200ms ease;
}
.nav.is-open .nav__toggle-bar:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav.is-open .nav__toggle-bar:nth-child(2) { opacity: 0; }
.nav.is-open .nav__toggle-bar:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

@media (max-width: 800px) {
  .nav__toggle { display: inline-flex; }
  .nav__links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px var(--gutter) 16px;
    background: rgba(244, 239, 230, 0.98);
    backdrop-filter: saturate(140%) blur(8px);
    -webkit-backdrop-filter: saturate(140%) blur(8px);
    border-bottom: 1px solid var(--edge);
    font-size: 16px;
    display: none;
  }
  .nav.is-open .nav__links { display: flex; }
  .nav__links a {
    padding: 14px 0;
    border-bottom: 1px solid var(--edge);
  }
  .nav__links a:last-child { border-bottom: 0; margin-top: 8px; }
}

/* Footer */
.footer {
  border-top: 1px solid var(--edge);
  padding: 56px var(--gutter) 32px;
  background: var(--bone);
}
.footer__cols {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
}
@media (max-width: 800px) { .footer__cols { grid-template-columns: 1fr 1fr; } }

/* Misc */
.kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  border: 1px solid var(--edge);
  padding: 2px 6px;
  color: var(--mute);
}

.signature {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: 28px;
  letter-spacing: -0.01em;
  color: var(--bone);
}

/* Number marker */
.num-marker {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mute);
  letter-spacing: 0.1em;
}

/* Anchor offset for sticky nav */
:target { scroll-margin-top: 80px; }

/* ─────────────────────────────────────────────────────────────────────────
   Mobile responsiveness
   Centralized media-query block for components whose multi-column grids
   were authored as inline styles. The classes are selected with a higher
   specificity so the inline grid-template-columns can be overridden.
   ───────────────────────────────────────────────────────────────────────── */

/* Tablet and below (≤900px) — keep big collapses here so they apply
   alongside existing per-component @media rules. */
@media (max-width: 900px) {
  /* Section vertical rhythm — pull the spacing in */
  .section { padding: 56px var(--gutter); }
  .section--sm { padding: 32px var(--gutter); }
  /* Programs landing — already handled by .prog-list inline media,
     reinforce here in case specificity loses */
  .prog-list .card { grid-template-columns: 1fr !important; gap: 24px !important; padding: 28px !important; }
  .prog-list .card > div:last-child { border-left: 0 !important; padding-left: 0 !important; border-top: 1px solid var(--edge); padding-top: 24px !important; }
}

/* Phone (≤720px) — collapse remaining multi-column grids */
@media (max-width: 720px) {
  /* Home — Events row: was `100px 100px 1fr 1fr 120px` */
  .event-row { grid-template-columns: 1fr !important; gap: 6px !important; padding: 22px 0 !important; }
  .event-row > div:last-child { text-align: left !important; }

  /* Home — Proof section "1fr 2fr" */
  .proof-grid { grid-template-columns: 1fr !important; gap: 24px !important; }

  /* Home — Manifesto pull-quote / centered "1fr 1.4fr" */
  .manifesto-grid { grid-template-columns: 1fr !important; gap: 28px !important; }

  /* Home — Lead magnet "1.1fr 1fr" */
  .lm-grid { grid-template-columns: 1fr !important; gap: 32px !important; }

  /* Home — Programs hero builder card inner "1fr 1fr" */
  .prog-builder-meta { grid-template-columns: 1fr !important; gap: 12px !important; }
  .prog-builder-meta > div:last-child { text-align: left !important; }

  /* Home — Section heads "1fr 1.4fr" already on .sh-grid via inline media at 900px ✓ */

  /* Studio — package rows "80px 1.4fr 1fr" */
  .pkg-row { grid-template-columns: 1fr !important; gap: 16px !important; }

  /* Studio — how-grid "repeat(5, 1fr)" */
  .how-grid { grid-template-columns: 1fr 1fr !important; gap: 16px !important; }

  /* Start-here — card rows "80px 1fr auto" */
  .start-card-row { grid-template-columns: 1fr !important; gap: 16px !important; }

  /* Program detail pages — bt-meta "repeat(4, 1fr)" tightens to 1col here */
  .bt-meta { grid-template-columns: 1fr 1fr !important; gap: 18px !important; }

  /* Program detail pages — curriculum rows "60px 1fr 1.4fr" */
  .rule-row { grid-template-columns: 1fr !important; gap: 8px !important; padding: 22px 0 !important; }

  /* Footer — cols collapse to single column */
  .footer__cols { grid-template-columns: 1fr !important; gap: 28px !important; }

  /* Section padding tightening */
  .section, .section.dark { padding: 48px var(--gutter); }
  .section--sm { padding: 28px var(--gutter); }

  /* Card padding default — many cards used 56px which is too generous on phone */
  a.card[style*="56px"] { padding: 32px !important; }

  /* Hero padding-top large pages */
  header.section[style*="padding-top"] { padding-top: 48px !important; }

  /* Cards — generic */
  .card { padding: 24px; }

  /* Buttons — keep minimum tap area */
  .btn { padding: 14px 18px; font-size: 14px; }
  .btn--sm { padding: 10px 14px; font-size: 12px; }
}

/* Very small phones (≤420px) — final squeeze */
@media (max-width: 420px) {
  :root { --gutter: 20px; }
  .display { font-size: clamp(40px, 11vw, 56px) !important; }
  .h2 { font-size: clamp(26px, 7vw, 34px) !important; }
  .lede { font-size: 15px !important; }
  .bt-meta { grid-template-columns: 1fr !important; }
}