@import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600;700&family=Inter:wght@300;400;500;600&display=swap");

:root {
  --navy: #2c3e50;
  --warm-white: #fafaf8;
  --stone-grey: #e8e4df;
  --dark: #141414;
  --font-serif: "Cormorant Garamond", Georgia, serif;
  --font-sans: "Inter", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.8;
  color: var(--navy);
  background: var(--warm-white);
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  padding-top: 140px;
}

@media (min-width: 768px) {
  main {
    padding-top: 160px;
  }
}

.container {
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  max-width: 48rem;
}

.container-wide {
  max-width: 80rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: #fff;
  border-bottom: 1px solid rgba(44, 62, 80, 0.2);
  padding: 0.75rem 0;
}

.site-header .inner {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  height: 5rem;
  width: auto;
  object-fit: contain;
}

@media (min-width: 768px) {
  .logo img {
    height: 6rem;
  }
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 2rem;
}

@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
  }
}

.nav-link {
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.7;
  transition: opacity 0.3s;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  opacity: 1;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 100%;
  height: 1px;
  background: var(--navy);
  transform: scaleX(0);
  transition: transform 0.3s;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--navy);
  background: transparent;
  color: var(--navy);
  cursor: pointer;
  transition: background 0.3s, color 0.3s, opacity 0.3s;
  font-family: var(--font-sans);
}

.btn:hover {
  background: var(--navy);
  color: #fff;
}

.btn-primary {
  background: var(--navy);
  color: #fff;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-white {
  border-color: #fff;
  color: #fff;
}

.btn-white:hover {
  background: #fff;
  color: var(--navy);
}

.menu-toggle {
  display: block;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  color: var(--navy);
}

@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }

  .nav-mobile {
    display: none;
  }
}

.nav-mobile {
  display: flex;
  position: fixed;
  inset: 0;
  z-index: 40;
  background: #fff;
  padding: 6rem 1.5rem 2rem;
  flex-direction: column;
  gap: 1.5rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-20px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}

.nav-mobile.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-mobile a {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0.6;
}

.nav-mobile a.active {
  opacity: 1;
}

/* Footer */
.site-footer {
  background: var(--navy);
  color: #fff;
  padding: 5rem 1.5rem 2rem;
}

.site-footer .grid {
  max-width: 80rem;
  margin: 0 auto 4rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 768px) {
  .site-footer .grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.site-footer .logo img {
  filter: brightness(0) invert(1);
  height: 7rem;
  margin-bottom: 1.5rem;
}

.site-footer .tagline {
  font-size: 0.875rem;
  opacity: 0.7;
  max-width: 18rem;
}

.site-footer a {
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.7;
  transition: opacity 0.3s;
}

.site-footer a:hover {
  opacity: 1;
}

.site-footer .copyright {
  max-width: 80rem;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  text-align: center;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  opacity: 0.5;
}

.site-footer .site-version {
  max-width: 80rem;
  margin: 0.5rem auto 0;
  text-align: center;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  opacity: 0.4;
}

/* Hero */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  text-align: center;
  color: #fff;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(44, 62, 80, 0.45);
  mix-blend-mode: multiply;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 64rem;
  padding: 0 1.5rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  letter-spacing: 0.1em;
  margin: 0 0 2rem;
}

.hero p {
  font-size: clamp(1.125rem, 2vw, 1.25rem);
  max-width: 36rem;
  margin: 0 auto 3rem;
}

/* Sections */
.section {
  padding: 6rem 1.5rem;
}

.section-white {
  background: #fff;
}

.section-warm {
  background: var(--warm-white);
}

.section-grey {
  background: var(--stone-grey);
}

.section-navy {
  background: var(--navy);
  color: #fff;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  text-align: center;
  margin: 0 0 3rem;
}

.eyebrow {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  opacity: 0.6;
  margin-bottom: 1.5rem;
}

.divider {
  width: 100%;
  height: 1px;
  background: rgba(44, 62, 80, 0.2);
  margin: 2rem 0;
}

.prose {
  font-size: 1.125rem;
  line-height: 1.8;
}

.prose p {
  margin: 0 0 1.5rem;
  opacity: 0.9;
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose h2 {
  font-size: 1.875rem;
  margin: 4rem 0 1.5rem;
}

.prose h3 {
  font-size: 1.5rem;
  margin: 2.5rem 0 1rem;
}

.prose ul {
  margin: 0 0 1.5rem;
  padding-left: 1.5rem;
}

.prose ul li {
  margin-bottom: 0.75rem;
}

.prose em {
  font-style: italic;
}

/* Three column grid */
.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
  }

  .grid-3 > div {
    padding: 0 3rem;
  }

  .grid-3 > div:not(:last-child) {
    border-right: 1px solid rgba(44, 62, 80, 0.1);
  }
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.card {
  border: 1px solid var(--navy);
  background: #fff;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 280px;
}

.card h3 {
  font-size: 1.875rem;
  margin: 0 0 1rem;
}

.card .amount {
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.6;
  font-family: var(--font-sans);
}

/* Library filters */
.library-filters {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 4rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(44, 62, 80, 0.1);
}

@media (min-width: 768px) {
  .library-filters {
    flex-direction: row;
    gap: 3rem;
  }
}

.library-filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.library-filter-label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.6;
}

.library-filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.library-filter-btn {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  border: 1px solid rgba(44, 62, 80, 0.2);
  background: transparent;
  color: var(--navy);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  font-family: var(--font-sans);
}

.library-filter-btn:hover {
  border-color: var(--navy);
}

.library-filter-btn.active {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}

.library-sections {
  display: flex;
  flex-direction: column;
  gap: 6rem;
}

.library-section-title {
  font-size: 1.875rem;
  margin: 0 0 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(44, 62, 80, 0.1);
}

.library-empty {
  text-align: center;
  padding: 4rem 0;
}

.library-empty h3 {
  font-size: 1.875rem;
  margin: 0 0 1rem;
}

.library-empty p {
  opacity: 0.6;
  margin: 0;
}

.library-card[hidden] {
  display: none;
}

.library-card-locked {
  opacity: 0.65;
  border-style: dashed;
}

.library-card-locked:hover {
  border-color: rgba(44, 62, 80, 0.2);
}

.library-locked-label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  opacity: 0.6;
}

/* Library cards */
.library-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .library-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .library-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.library-card {
  border: 1px solid rgba(44, 62, 80, 0.2);
  padding: 2rem;
  background: #fff;
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s;
}

.library-card:hover {
  border-color: var(--navy);
}

.library-card .format {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.6;
  margin-bottom: 1.5rem;
}

.format-icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.library-card h3 {
  font-size: 1.5rem;
  margin: 0 0 0.75rem;
}

.library-card p {
  font-size: 0.875rem;
  opacity: 0.8;
  flex: 1;
  margin: 0 0 2rem;
}

.library-card .actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.library-card .link {
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
}

/* Forms */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.form-group label {
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.7;
}

.form-group input,
.form-group textarea {
  padding: 0.75rem 1rem;
  border: 1px solid var(--navy);
  background: transparent;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 1rem;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  box-shadow: 0 0 0 1px var(--navy);
}

.form-panel {
  background: var(--warm-white);
  border: 1px solid rgba(44, 62, 80, 0.1);
  padding: 3rem;
}

.subscribe-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 28rem;
  margin: 0 auto 2rem;
}

@media (min-width: 640px) {
  .subscribe-form {
    flex-direction: row;
  }
}

.subscribe-form input {
  flex: 1;
  padding: 1rem 1.5rem;
  border: 1px solid var(--navy);
  background: #fff;
  font-family: var(--font-sans);
  font-weight: 300;
}

/* Audio player */
.audio-player {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.play-btn {
  width: 5rem;
  height: 5rem;
  border-radius: 50%;
  border: 1px solid rgba(44, 62, 80, 0.2);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.3s;
}

.play-btn:hover {
  border-color: var(--navy);
}

.play-btn svg {
  width: 1.5rem;
  height: 1.5rem;
}

/* Page header */
.page-header {
  text-align: center;
  padding: 8rem 1.5rem 6rem;
}

.page-header h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  margin: 0 0 1.5rem;
}

.page-header .subtitle {
  font-size: 0.875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0.8;
}

/* Back link */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.6;
  margin-bottom: 3rem;
  transition: opacity 0.3s;
}

.back-link:hover {
  opacity: 1;
}

/* Evolution page */
.evolution-hero {
  min-height: 100vh;
  background: var(--dark);
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1.5rem;
  position: relative;
  overflow: hidden;
}

.evolution-hero .bg {
  position: absolute;
  inset: 0;
  opacity: 0.4;
}

.evolution-hero .bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.evolution-hero .bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(20, 20, 20, 0.5), rgba(20, 20, 20, 0.8), var(--dark));
}

.evolution-hero .content {
  position: relative;
  z-index: 1;
  max-width: 56rem;
}

.evolution-hero h1 {
  font-size: clamp(3rem, 10vw, 5rem);
  margin: 0 0 2rem;
}

.chapter {
  padding: 6rem 1.5rem;
}

.chapter.dark {
  background: var(--dark);
  color: #fff;
}

.chapter.light {
  background: #fafafa;
  color: var(--dark);
}

.chapter-inner {
  max-width: 80rem;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .chapter-inner {
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
  }

  .chapter.reverse .chapter-inner {
    direction: rtl;
  }

  .chapter.reverse .chapter-inner > * {
    direction: ltr;
  }
}

.chapter .era {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.chapter .era::before {
  content: "";
  width: 3rem;
  height: 1px;
  background: currentColor;
  opacity: 0.3;
}

.chapter .era span {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.7;
}

.chapter h2 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  margin: 0 0 1rem;
}

.chapter .subtitle {
  font-size: 1.25rem;
  font-weight: 300;
  opacity: 0.7;
  margin: 0 0 2.5rem;
}

.chapter-image {
  aspect-ratio: 4 / 5;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.chapter-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.meta-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid currentColor;
  border-color: rgba(0, 0, 0, 0.1);
}

.chapter.dark .meta-grid {
  border-color: rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
  .meta-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.meta-grid .label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.5;
  margin-bottom: 0.25rem;
}

.callout {
  padding: 1.5rem;
  border-radius: 0.75rem;
  margin-top: 2rem;
}

.chapter.light .callout {
  background: rgba(0, 0, 0, 0.05);
}

.chapter.dark .callout {
  background: rgba(255, 255, 255, 0.05);
}

.callout.danger {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.chapter.dark .callout.danger {
  color: #fca5a5;
}

/* Course syllabus */
.session-timeline {
  position: relative;
}

.session {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 0;
}

.session-num {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 0.875rem;
}

.session-num span {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  border: 1px solid rgba(44, 62, 80, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  background: var(--warm-white);
}

.session-body {
  padding: 0.875rem 0 1.25rem;
  border-bottom: 1px solid rgba(44, 62, 80, 0.2);
  margin-bottom: 0.5rem;
}

.session:last-child .session-body {
  border-bottom: none;
}

.session h3 {
  font-size: 1rem;
  margin: 0 0 0.25rem;
}

.session .desc {
  font-size: 0.875rem;
  opacity: 0.7;
  margin: 0 0 0.625rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.tags span {
  font-size: 0.6875rem;
  padding: 0.25rem 0.625rem;
  border-radius: 999px;
  background: rgba(44, 62, 80, 0.05);
  border: 1px solid rgba(44, 62, 80, 0.1);
  opacity: 0.6;
}

.outcomes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.625rem;
}

@media (min-width: 768px) {
  .outcomes-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.outcome {
  background: rgba(44, 62, 80, 0.05);
  border-radius: 0.5rem;
  padding: 0.75rem;
  font-size: 0.875rem;
  opacity: 0.7;
  display: flex;
  gap: 0.625rem;
  align-items: flex-start;
}

.outcome::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--navy);
  flex-shrink: 0;
  margin-top: 0.5rem;
}

.course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin-top: 1.25rem;
}

.course-meta dt {
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.6;
  margin-bottom: 0.125rem;
}

.course-meta dd {
  margin: 0;
  font-size: 0.875rem;
}

.text-center {
  text-align: center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Motion (matches original framer-motion fades) */
@media (prefers-reduced-motion: no-preference) {
  .fade-motion {
    opacity: 0;
    transform: translateY(var(--fade-y, 20px));
    transition:
      opacity var(--fade-duration, 800ms) ease-out var(--fade-delay, 0ms),
      transform var(--fade-duration, 800ms) ease-out var(--fade-delay, 0ms);
    will-change: opacity, transform;
  }

  .fade-motion.fade-scale {
    transform: scale(0.95);
  }

  .fade-motion.is-visible {
    opacity: 1;
    transform: translateY(0);
  }

  .fade-motion.fade-scale.is-visible {
    transform: scale(1);
  }
}

.evolution-scroll-hint {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

@keyframes evolution-bounce {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(6px);
  }
}

.evolution-scroll-hint svg {
  animation: evolution-bounce 2s ease-in-out infinite;
}

/* Case study imagery */
.case-study-figure {
  margin: 0 0 2.5rem;
}

.prose .case-study-figure {
  margin: 2rem 0 2.5rem;
}

.case-study-figure img {
  width: 100%;
  height: auto;
  display: block;
}

.case-study-figure figcaption {
  font-size: 0.875rem;
  line-height: 1.5;
  opacity: 0.6;
  margin-top: 0.75rem;
}

.case-study-figures {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin: 2rem 0 2.5rem;
}

.case-study-figures .case-study-figure {
  margin: 0;
}

@media (min-width: 640px) {
  .case-study-figures {
    grid-template-columns: 1fr 1fr;
  }
}