/* Future Skills Academy — platform design system */

:root {
  --bone: #fbf8f4;
  --rice: #f4eee7;
  --paper: #fffaf6;
  --plum: #332432;
  --plum-soft: rgba(51, 36, 50, 0.66);
  --plum-faint: rgba(51, 36, 50, 0.42);
  --carmine: #bd2848;
  --carmine-deep: #9c1f3b;
  --rose: #c96a70;
  --blush: #e8b7ad;
  --mist: #f2dcd4;
  --line: rgba(51, 36, 50, 0.14);
  --line-strong: rgba(51, 36, 50, 0.26);
  --max: 1180px;
  --header: 72px;
  --serif: "Fraunces", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans: "Helvetica Neue", Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header) + 16px);
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--bone);
  color: var(--plum);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: var(--blush);
  color: var(--plum);
}

img {
  max-width: 100%;
  height: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px);
}

/* ---------- header ---------- */

.site-header {
  position: fixed;
  z-index: 40;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  min-height: var(--header);
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 4vw, 44px);
  border-bottom: 1px solid transparent;
  background: rgba(251, 248, 244, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color 0.3s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 0.04em;
}

.brand em {
  font-style: normal;
  font-family: var(--sans);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.32em;
  color: var(--carmine);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 30px);
  font-size: 13.5px;
  letter-spacing: 0.06em;
}

.site-nav a {
  color: var(--plum-soft);
  transition: color 0.2s ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--carmine);
}

.nav-cta {
  padding: 9px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--plum) !important;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.nav-cta:hover {
  border-color: var(--carmine);
  background: var(--mist);
}

/* ---------- landing hero ---------- */

.hero {
  display: grid;
  min-height: min(calc(100svh - var(--header)), 880px);
  align-content: center;
  gap: 28px;
  padding-top: calc(var(--header) + clamp(40px, 8vh, 90px));
  padding-bottom: clamp(48px, 8vh, 100px);
  text-align: center;
}

.hero-logo {
  width: min(290px, 60vw);
  margin: 0 auto;
}

.hero h1 {
  margin: 0 auto;
  max-width: 17ch;
  font-family: var(--serif);
  font-size: clamp(34px, 5.4vw, 64px);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.hero h1 .accent {
  color: var(--carmine);
  font-style: italic;
}

.hero-lede {
  margin: 0 auto;
  max-width: 56ch;
  color: var(--plum-soft);
  font-size: clamp(16px, 1.7vw, 19px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 999px;
  border: 1px solid var(--carmine);
  background: var(--carmine);
  color: var(--paper);
  font-size: 14.5px;
  letter-spacing: 0.05em;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  background: var(--carmine-deep);
  border-color: var(--carmine-deep);
  transform: translateY(-1px);
}

.btn.ghost {
  background: transparent;
  color: var(--plum);
  border-color: var(--line-strong);
}

.btn.ghost:hover {
  background: var(--mist);
  border-color: var(--carmine);
}

/* ---------- section scaffolding ---------- */

section {
  padding: clamp(88px, 12vw, 160px) 0 clamp(64px, 9vw, 120px);
}

.section-note {
  margin: 0 0 22px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.34em;
  color: var(--carmine);
}

.section-title {
  margin: 0 0 18px;
  max-width: 24ch;
  font-family: var(--serif);
  font-size: clamp(27px, 3.6vw, 44px);
  font-weight: 500;
  line-height: 1.16;
}

.section-lede {
  margin: 0 0 8px;
  max-width: 62ch;
  color: var(--plum-soft);
  font-size: clamp(16px, 1.6vw, 18px);
}

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

/* ---------- thesis ---------- */

.thesis blockquote {
  margin: 0;
  max-width: 30ch;
  font-family: var(--serif);
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 500;
  line-height: 1.22;
}

.thesis blockquote .accent {
  color: var(--carmine);
  font-style: italic;
}

.thesis-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 6vw, 90px);
  align-items: start;
}

.thesis-points {
  display: grid;
  gap: 26px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.thesis-points li {
  padding-left: 22px;
  border-left: 2px solid var(--blush);
}

.thesis-points strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
}

.thesis-points p {
  margin: 0;
  color: var(--plum-soft);
  font-size: 15.5px;
}

/* ---------- pillars ---------- */

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

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  margin-top: clamp(28px, 4vw, 48px);
}

/* odd final card (e.g. the fifth track) takes the full row */
.pillar-grid .pillar:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

.pillar {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(24px, 3vw, 38px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.pillar:hover {
  transform: translateY(-4px);
  border-color: rgba(189, 40, 72, 0.4);
  box-shadow: 0 18px 40px rgba(51, 36, 50, 0.08);
}

.pillar-no {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--carmine);
}

.pillar h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 600;
  line-height: 1.2;
}

.pillar .pillar-domain {
  margin: -6px 0 0;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--plum-faint);
}

.pillar p.pillar-desc {
  margin: 0;
  color: var(--plum-soft);
  font-size: 15.5px;
  flex-grow: 1;
}

.pillar-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--plum-faint);
}

.pillar-meta .go {
  color: var(--carmine);
  letter-spacing: 0.08em;
}

.pillar-progress {
  font-variant-numeric: tabular-nums;
}

/* ---------- method ---------- */

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(22px, 3vw, 40px);
  margin-top: clamp(28px, 4vw, 52px);
}

.method-step {
  padding-top: 18px;
  border-top: 2px solid var(--plum);
}

.method-step span {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--carmine);
}

.method-step h3 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
}

.method-step p {
  margin: 0;
  color: var(--plum-soft);
  font-size: 15.5px;
}

/* ---------- principles strip ---------- */

.principles {
  background: var(--plum);
  color: var(--bone);
}

.principles .section-note {
  color: var(--blush);
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 4vw, 56px);
  margin-top: clamp(24px, 4vw, 44px);
}

.principle h3 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
}

.principle p {
  margin: 0;
  color: rgba(251, 248, 244, 0.72);
  font-size: 15.5px;
}

/* ---------- cta / council ---------- */

.cta {
  text-align: center;
}

.cta .section-title {
  margin-inline: auto;
}

.cta .section-lede {
  margin-inline: auto;
  margin-bottom: 28px;
}

/* ---------- footer ---------- */

footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding: 28px clamp(20px, 4vw, 44px);
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--plum-faint);
  letter-spacing: 0.06em;
}

/* ---------- track pages ---------- */

.track-hero {
  padding-top: calc(var(--header) + clamp(48px, 8vh, 96px));
  padding-bottom: clamp(40px, 6vw, 72px);
  border-bottom: 1px solid var(--line);
}

.track-kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--carmine);
}

.track-kicker::after {
  content: "";
  flex: 0 0 56px;
  height: 1px;
  background: var(--carmine);
  opacity: 0.5;
}

.track-hero h1 {
  margin: 0 0 16px;
  max-width: 16ch;
  font-family: var(--serif);
  font-size: clamp(36px, 5.4vw, 64px);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.01em;
}

.track-epigraph {
  margin: 0 0 26px;
  max-width: 52ch;
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(18px, 2vw, 22px);
  color: var(--plum-soft);
}

.track-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--plum-faint);
}

.track-meta strong {
  color: var(--plum);
  font-weight: 600;
}

/* progress bar */

.track-progress {
  position: sticky;
  top: var(--header);
  z-index: 30;
  border-bottom: 1px solid var(--line);
  background: rgba(251, 248, 244, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.track-progress .wrap {
  display: flex;
  align-items: center;
  gap: 18px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.track-progress-label {
  flex-shrink: 0;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--plum-soft);
  font-variant-numeric: tabular-nums;
}

.track-progress-bar {
  position: relative;
  flex: 1;
  height: 4px;
  border-radius: 999px;
  background: var(--mist);
  overflow: hidden;
}

.track-progress-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  border-radius: 999px;
  background: var(--carmine);
  transition: width 0.4s ease;
}

/* track intro columns */

.track-intro-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: start;
}

.track-intro-grid h2 {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-size: clamp(23px, 2.8vw, 32px);
  font-weight: 600;
  line-height: 1.2;
}

.track-intro-grid p {
  margin: 0 0 16px;
  color: var(--plum-soft);
}

.outcomes {
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper);
}

.outcomes h3 {
  margin: 0 0 14px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--carmine);
}

.outcomes ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 15.5px;
}

.outcomes li {
  position: relative;
  padding-left: 24px;
  color: var(--plum-soft);
}

.outcomes li::before {
  content: "";
  position: absolute;
  top: 0.55em;
  left: 0;
  width: 12px;
  height: 2px;
  background: var(--carmine);
}

/* curriculum */

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

.module {
  margin-top: clamp(34px, 5vw, 56px);
}

.module-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 8px;
}

.module-no {
  flex-shrink: 0;
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--carmine);
}

.module-head h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(21px, 2.4vw, 27px);
  font-weight: 600;
}

.module-summary {
  margin: 0 0 20px;
  max-width: 66ch;
  color: var(--plum-soft);
  font-size: 15.5px;
}

.lesson {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  margin-bottom: 10px;
  overflow: hidden;
}

.lesson[open] {
  border-color: rgba(189, 40, 72, 0.35);
}

.lesson summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.lesson summary::-webkit-details-marker {
  display: none;
}

.lesson-no {
  flex-shrink: 0;
  width: 38px;
  font-size: 13px;
  color: var(--carmine);
  font-variant-numeric: tabular-nums;
}

.lesson-title {
  flex: 1;
  font-size: 16px;
  font-weight: 500;
}

.lesson-state {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: 1.5px solid var(--line-strong);
  border-radius: 50%;
  font-size: 12px;
  color: transparent;
  transition: all 0.2s ease;
}

.lesson.is-done .lesson-state {
  border-color: var(--carmine);
  background: var(--carmine);
  color: var(--paper);
}

.lesson.is-done .lesson-title {
  color: var(--plum-faint);
}

.lesson-chevron {
  flex-shrink: 0;
  color: var(--plum-faint);
  font-size: 12px;
  transition: transform 0.25s ease;
}

.lesson[open] .lesson-chevron {
  transform: rotate(180deg);
}

.lesson-body {
  padding: 4px 22px 22px 74px;
}

.lesson-body p {
  margin: 0 0 14px;
  max-width: 68ch;
  color: var(--plum-soft);
  font-size: 15.5px;
}

.lesson-body p:last-of-type {
  margin-bottom: 18px;
}

.practice {
  padding: 14px 18px;
  border-left: 3px solid var(--carmine);
  border-radius: 0 10px 10px 0;
  background: var(--mist);
  color: var(--plum) !important;
}

.practice strong {
  color: var(--carmine-deep);
}

.mark-done {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 8px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--plum);
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all 0.2s ease;
}

.mark-done:hover {
  border-color: var(--carmine);
  background: var(--paper);
}

.lesson.is-done .mark-done {
  border-color: var(--carmine);
  background: var(--carmine);
  color: var(--paper);
}

@media (max-width: 1023px) {
  .lesson-body {
    padding-left: 22px;
  }
}

/* capstone */

.capstone-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 70px);
  padding: clamp(28px, 4vw, 52px);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--plum);
  color: var(--bone);
}

.capstone-panel .section-note {
  color: var(--blush);
}

.capstone-panel h2 {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 500;
  line-height: 1.18;
}

.capstone-panel p {
  margin: 0 0 14px;
  color: rgba(251, 248, 244, 0.74);
  font-size: 15.5px;
}

.capstone-panel ol {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 12px;
  color: rgba(251, 248, 244, 0.82);
  font-size: 15.5px;
}

/* track footer nav */

.track-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.track-nav a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--paper);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.track-nav a:hover {
  border-color: var(--carmine);
  transform: translateY(-2px);
}

.track-nav span {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: var(--carmine);
}

.track-nav strong {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
}

.track-nav a.next {
  text-align: right;
  align-items: flex-end;
}

/* ---------- reveal animation ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- responsive ---------- */

@media (max-width: 1023px) {
  .pillar-grid,
  .thesis-grid,
  .track-intro-grid,
  .capstone-panel {
    grid-template-columns: 1fr;
  }

  .method-grid,
  .principle-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 720px) {
  .site-nav a:not(.nav-cta) {
    display: none;
  }

  .track-nav {
    grid-template-columns: 1fr;
  }

  .track-nav a.next {
    text-align: left;
    align-items: flex-start;
  }
}