/* ─────────────────────────────────────────────────────────────────────────
   /reskill — minimal. plain HTML + CSS.
   ───────────────────────────────────────────────────────────────────────── */

:root {
  --bg: #f4f1ec;
  --fg: #1f1f1d;
  --accent: #144a77;
  --muted: #c9c2b3;
  --hair: rgba(31,31,29,0.12);
  --soft: rgba(31,31,29,0.55);

  --f-sans: "Hanken Grotesk", ui-sans-serif, system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --w-max: 980px;
  --gut: 40px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); }
body {
  font-family: var(--f-sans);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

::selection { background: var(--accent); color: var(--bg); }

/* ── Layout ──────────────────────────────────────────────────────────── */

.wrap { max-width: var(--w-max); margin: 0 auto; padding: 0 var(--gut); }

@media (max-width: 720px) {
  :root { --gut: 24px; }
}

/* ── Type ────────────────────────────────────────────────────────────── */

.h-display {
  font-weight: 500;
  font-size: clamp(40px, 5.6vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.026em;
  text-wrap: balance;
  margin: 0 0 32px;
}
.h-display em {
  font-style: normal;
  color: var(--accent);
}
.h-display .slash { color: var(--accent); }

.hero .h-display {
  font-family: var(--f-mono);
  font-weight: 400;
  letter-spacing: -0.04em;
}

.h-section {
  font-weight: 500;
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 48px;
  text-wrap: balance;
}

/* ── Nav ─────────────────────────────────────────────────────────────── */

.nav {
  padding: 24px 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav .brand {
  font-family: var(--f-mono);
  font-size: 13px;
  font-weight: 400;
}
.nav .brand b { font-weight: 500; }
.nav .brand .slash { color: var(--accent); }

.nav .links {
  display: flex;
  gap: 28px;
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--soft);
}
.nav .links a:hover { color: var(--fg); }

.nav .cta-mini {
  font-family: var(--f-mono);
  font-size: 12px;
  border: 1px solid var(--fg);
  padding: 8px 14px;
  border-radius: 999px;
  transition: background .15s, color .15s;
}
.nav .cta-mini:hover { background: var(--fg); color: var(--bg); }

@media (max-width: 640px) { .nav .links { display: none; } }

/* ── Hero ────────────────────────────────────────────────────────────── */

.hero { padding: 120px 0 140px; }

.hero .lede {
  font-size: 19px;
  line-height: 1.55;
  color: var(--soft);
  max-width: 52ch;
  margin: 0 0 48px;
}

.hero-cta-group {
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
}

/* ── Buttons ─────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 24px;
  border-radius: 999px;
  border: 0;
  font-family: var(--f-sans);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.btn-primary { background: var(--fg); color: var(--bg); }
.btn-primary:hover { background: var(--accent); }
.btn-ghost { background: transparent; color: var(--fg); padding: 14px 4px; }
.btn-ghost:hover { color: var(--accent); }
.btn .arrow { transition: transform .15s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ── Section ─────────────────────────────────────────────────────────── */

.section { padding: 96px 0; border-top: 1px solid var(--hair); }

/* ── Curriculum ──────────────────────────────────────────────────────── */

.curriculum .module {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-top: 1px solid var(--hair);
  align-items: baseline;
}
.curriculum .module:last-child { border-bottom: 1px solid var(--hair); }
.curriculum .module .idx {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--soft);
  letter-spacing: 0.04em;
}
.curriculum .module h3 {
  margin: 0 0 6px;
  font-weight: 500;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.012em;
}
.curriculum .module p {
  margin: 0;
  color: var(--soft);
  font-size: 16px;
  line-height: 1.55;
  max-width: 56ch;
}

.curriculum .module .topics {
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--f-mono);
  font-size: 12.5px;
  color: var(--soft);
  letter-spacing: 0.01em;
  max-width: 60ch;
}
.curriculum .module .topics li {
  padding: 4px 0 4px 18px;
  position: relative;
}
.curriculum .module .topics li::before {
  content: "·";
  position: absolute;
  left: 4px;
  color: var(--accent);
  font-weight: 700;
}

.curriculum-note {
  margin: 36px 0 0;
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--soft);
  letter-spacing: 0.01em;
  max-width: 60ch;
}

@media (max-width: 640px) {
  .curriculum .module { grid-template-columns: 1fr; gap: 6px; }
}

/* ── Instructor ──────────────────────────────────────────────────────── */

.instructor {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 56px;
  align-items: start;
}
.instructor .portrait {
  aspect-ratio: 4/5;
  background:
    repeating-linear-gradient(135deg,
      rgba(31,31,29,0.06) 0 1px,
      transparent 1px 14px),
    var(--muted);
  position: relative;
  border-radius: 2px;
}
.instructor .portrait .tag {
  position: absolute;
  left: 12px;
  bottom: 12px;
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--fg);
  background: var(--bg);
  padding: 5px 9px;
  border: 1px solid var(--hair);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.instructor .bio .h-section { margin-bottom: 24px; }
.instructor .bio p {
  margin: 0 0 16px;
  font-size: 17px;
  line-height: 1.6;
  color: var(--fg);
  max-width: 48ch;
}
.instructor .bio p:last-child { margin-bottom: 0; }
.instructor .bio p em { font-style: italic; color: var(--accent); }
.instructor .bio .link {
  color: var(--fg);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
  transition: color .15s;
}
.instructor .bio .link:hover { color: var(--accent); }

@media (max-width: 720px) {
  .instructor { grid-template-columns: 1fr; gap: 28px; }
}

/* ── Quotes ──────────────────────────────────────────────────────────── */

.quotes-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}
.quotes-section .q {
  margin: 0;
}
.quotes-section blockquote {
  margin: 0 0 20px;
  font-size: 19px;
  line-height: 1.45;
  letter-spacing: -0.011em;
  text-wrap: pretty;
  font-weight: 400;
}
.quotes-section figcaption {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.quotes-section .name { font-weight: 500; font-size: 14.5px; }
.quotes-section .role {
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

@media (max-width: 720px) {
  .quotes-section { grid-template-columns: 1fr; gap: 36px; }
}

/* ── FAQ ─────────────────────────────────────────────────────────────── */

.faq-item {
  border-top: 1px solid var(--hair);
  padding: 22px 0;
  cursor: pointer;
}
.faq-item:last-child { border-bottom: 1px solid var(--hair); }
.faq-item summary {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 20px;
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.012em;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .plus {
  font-family: var(--f-mono);
  color: var(--soft);
  font-size: 16px;
  width: 20px;
  text-align: center;
  transition: transform .2s ease;
}
.faq-item[open] summary .plus {
  transform: rotate(45deg);
  color: var(--accent);
}
.faq-item .a {
  margin-top: 14px;
  color: var(--soft);
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.6;
}

/* ── Booking ─────────────────────────────────────────────────────────── */

.book {
  padding: 96px 0 120px;
  border-top: 1px solid var(--hair);
}
.book-intro { margin-bottom: 40px; max-width: 48ch; }
.book-intro .lede {
  color: var(--soft);
  font-size: 18px;
  margin: 0;
}

.form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--hair);
}
.form .field {
  padding: 22px 24px 22px 0;
  border-bottom: 1px solid var(--hair);
  border-right: 1px solid var(--hair);
}
.form .field:nth-child(2) {
  padding-left: 24px;
  padding-right: 0;
  border-right: 0;
}
.form .field.full {
  grid-column: 1 / -1;
  border-right: 0;
  padding-right: 0;
}
.form label {
  display: block;
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--soft);
  margin-bottom: 10px;
}
.form input,
.form textarea {
  appearance: none;
  width: 100%;
  border: 0;
  background: transparent;
  font-family: var(--f-sans);
  font-size: 17px;
  color: var(--fg);
  padding: 4px 0;
  outline: none;
  letter-spacing: -0.005em;
}
.form input::placeholder,
.form textarea::placeholder { color: var(--soft); opacity: 0.6; }
.form textarea { min-height: 96px; resize: vertical; }

.submit-row {
  grid-column: 1 / -1;
  padding: 24px 0 0;
  display: flex;
  justify-content: flex-end;
}
.submit-row button {
  background: var(--fg);
  color: var(--bg);
  border: 0;
  padding: 16px 24px;
  border-radius: 999px;
  font-family: var(--f-sans);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: background .15s;
}
.submit-row button:hover { background: var(--accent); }
.submit-row .arrow { transition: transform .15s; }
.submit-row button:hover .arrow { transform: translateX(3px); }

.form-sent { padding: 40px 0; }
.form-sent .h-section { margin-bottom: 8px; }
.form-sent p { margin: 0; color: var(--soft); }

@media (max-width: 720px) {
  .form { grid-template-columns: 1fr; }
  .form .field,
  .form .field:nth-child(2) {
    padding: 18px 0;
    border-right: 0;
  }
}

/* ── Footer ──────────────────────────────────────────────────────────── */

.footer {
  border-top: 1px solid var(--hair);
  padding: 32px 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--soft);
}
.footer .brand { color: var(--fg); }
.footer .brand .slash { color: var(--accent); }