/* ============================================
   Meadow & Machine Studio
   Production Stylesheet
   ============================================ */

/* --- Design Tokens --- */
:root {
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --color-cream: #F7F5F0;
  --color-clay: #C17A5F;
  --color-olive: #6B705C;
  --color-sage: #8A9A5B;
  --color-graphite: #2E2E2C;
  --color-stone: #E8E4D9;
  --color-wheat: #D4C5A9;
  --color-white: #FFFFFF;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 7rem;

  --radius: 12px;
  --radius-lg: 48px;

  --transition: 0.3s ease;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-graphite);
  background-color: var(--color-cream);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button {
  font-family: inherit;
}

/* --- Accessibility --- */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-graphite);
  color: var(--color-cream);
  padding: 0.5rem 1.25rem;
  z-index: 200;
  transition: top 0.25s ease;
  font-weight: 500;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--color-clay);
  outline-offset: 2px;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.15;
  font-weight: 600;
  color: var(--color-graphite);
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-olive);
  font-family: var(--font-sans);
  font-weight: 400;
  max-width: 50ch;
  margin-inline: auto;
}

.section-lead {
  font-size: 1.25rem;
  font-family: var(--font-serif);
  color: var(--color-olive);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

/* --- Layout --- */
.container {
  width: 92%;
  max-width: 1200px;
  margin-inline: auto;
}

.section {
  padding-block: var(--space-xl);
  position: relative;
}

/* --- Header & Nav --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(247, 245, 240, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(247, 245, 240, 0.98);
  box-shadow: 0 2px 20px rgba(46, 46, 44, 0.06);
  border-bottom-color: var(--color-stone);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-graphite);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-olive);
  position: relative;
  padding-block: 0.25rem;
  transition: color var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-clay);
  transition: width 0.35s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-graphite);
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  width: 100%;
}

.nav-link:focus-visible {
  outline: 2px solid var(--color-clay);
  outline-offset: 4px;
  border-radius: 2px;
}

.nav-toggle {
  display: none;
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

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

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(15%) brightness(0.75) contrast(1.05);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(107, 112, 92, 0.55) 0%, rgba(46, 46, 44, 0.45) 100%);
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 100px 100px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  color: var(--color-cream);
  max-width: 800px;
  padding-top: 72px;
}

.hero-title {
  font-size: clamp(2.75rem, 6vw, 5.25rem);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: 1.25rem;
  max-width: 560px;
  margin-bottom: var(--space-md);
  opacity: 0.92;
  line-height: 1.5;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
  cursor: pointer;
  border: none;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:focus-visible {
  outline: 3px solid var(--color-wheat);
  outline-offset: 3px;
}

.btn-primary {
  background-color: var(--color-clay);
  color: var(--color-white);
  box-shadow: 0 4px 24px rgba(193, 122, 95, 0.35);
}

.btn-primary:hover {
  background-color: #A8694F;
}

/* --- Studio --- */
.studio {
  overflow: hidden;
}

.studio-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.studio-media {
  position: relative;
}

.studio-media img {
  border-radius: 2px var(--radius-lg) 2px var(--radius-lg);
  box-shadow: 0 24px 70px rgba(46, 46, 44, 0.12);
  width: 100%;
}

.diagram-accent {
  position: absolute;
  top: -28px;
  right: -28px;
  width: 140px;
  height: 140px;
  color: var(--color-clay);
  opacity: 0.7;
  pointer-events: none;
  transform: rotate(12deg);
}

.organic-shape {
  position: absolute;
  top: 10%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: var(--color-stone);
  border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
  opacity: 0.45;
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
}

.organic-shape-alt {
  left: auto;
  right: -15%;
  top: 20%;
  background: var(--color-wheat);
  opacity: 0.35;
}

/* --- Learning --- */
.learning {
  background-color: #FDFCF8;
  background-image:
    linear-gradient(to right, rgba(107, 112, 92, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(107, 112, 92, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--space-lg);
}

.program-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
}

.program-card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-stone);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}

.program-card:hover {
  box-shadow: 0 14px 45px rgba(46, 46, 44, 0.08);
  transform: translateY(-4px);
}

.program-visual {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.program-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.65s ease;
}

.program-card:hover .program-visual img {
  transform: scale(1.05);
}

.program-info {
  padding: var(--space-md);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.program-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
  color: var(--color-graphite);
}

.program-excerpt {
  color: var(--color-olive);
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
  flex: 1;
}

.program-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0;
  background: none;
  border: none;
  color: var(--color-clay);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  margin-top: auto;
  transition: color var(--transition);
}

.program-toggle:hover {
  color: #A8694F;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.program-toggle:focus-visible {
  outline: 2px solid var(--color-clay);
  outline-offset: 4px;
  border-radius: 2px;
}

.toggle-icon {
  font-size: 1.4rem;
  line-height: 1;
  transition: transform 0.35s ease;
}

.program-card.is-open .toggle-icon {
  transform: rotate(45deg);
}

.program-details {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.45s ease-out, opacity 0.35s ease-out, margin-top 0.35s ease;
}

.program-card.is-open .program-details {
  max-height: 320px;
  opacity: 1;
  margin-top: var(--space-sm);
}

.program-details p {
  font-size: 0.95rem;
  color: var(--color-olive);
  margin-bottom: var(--space-xs);
  line-height: 1.55;
}

.program-details ul {
  list-style: disc;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--color-olive);
}

.program-details li + li {
  margin-top: 0.35rem;
}

.program-details strong {
  color: var(--color-graphite);
  font-weight: 600;
}

/* --- Farm Lab --- */
.farm-lab {
  background-color: var(--color-cream);
}

.crop-map-wrapper {
  margin-bottom: var(--space-lg);
}

.map-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-graphite);
  margin-bottom: var(--space-sm);
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
}

.diagram-underline {
  color: var(--color-clay);
  opacity: 0.85;
  margin-top: 4px;
}

.crop-map {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-md);
  background: var(--color-white);
  border: 1px solid var(--color-stone);
  border-radius: var(--radius);
  padding: var(--space-md);
}

.field-svg {
  width: 100%;
  height: auto;
  display: block;
}

.crop-zone {
  fill: var(--color-sage);
  stroke: var(--color-white);
  stroke-width: 3;
  opacity: 0.8;
  cursor: pointer;
  transition: fill var(--transition), opacity var(--transition), filter var(--transition);
}

.crop-zone:hover,
.crop-zone.is-selected {
  fill: var(--color-clay);
  opacity: 1;
  filter: drop-shadow(0 4px 12px rgba(193, 122, 95, 0.3));
}

.crop-zone:focus-visible {
  outline: 3px solid var(--color-clay);
  outline-offset: -3px;
}

.zone-label {
  font-family: var(--font-sans);
  font-size: 14px;
  fill: var(--color-white);
  font-weight: 600;
  text-anchor: middle;
  pointer-events: none;
  text-shadow: 0 1px 3px rgba(0,0,0,0.35);
}

.map-panel {
  background: #FAFAF7;
  border-radius: var(--radius);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 220px;
}

.panel-hint {
  color: var(--color-olive);
  font-style: italic;
  font-size: 0.95rem;
}

.panel-content[hidden] {
  display: none;
}

.panel-crop {
  font-family: var(--font-serif);
  font-size: 2rem;
  margin-bottom: var(--space-sm);
  color: var(--color-graphite);
}

.panel-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.panel-stats div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--color-stone);
}

.panel-stats dt {
  font-weight: 500;
  color: var(--color-olive);
  font-size: 0.9rem;
}

.panel-stats dd {
  font-weight: 600;
  color: var(--color-graphite);
  font-variant-numeric: tabular-nums;
}

/* Metrics */
.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.metric {
  background: var(--color-white);
  padding: var(--space-md);
  border-radius: var(--radius);
  border: 1px solid var(--color-stone);
  text-align: center;
  transition: transform var(--transition), border-color var(--transition);
}

.metric:hover {
  transform: translateY(-4px);
  border-color: var(--color-clay);
}

.metric-value {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.6rem;
  color: var(--color-clay);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.metric-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-olive);
  line-height: 1.4;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.project-card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-stone);
  transition: box-shadow var(--transition);
}

.project-card:hover {
  box-shadow: 0 12px 35px rgba(46, 46, 44, 0.08);
}

.project-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.02);
}

.project-card h3 {
  padding: var(--space-sm) var(--space-md) 0;
  font-size: 1.25rem;
}

.project-card p {
  padding: 0 var(--space-md) var(--space-md);
  color: var(--color-olive);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* --- Visit --- */
.visit {
  background-color: #FDFCF8;
}

.visit-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.visit-info {
  max-width: 480px;
}

.contact-block {
  margin-top: var(--space-md);
  font-style: normal;
}

.contact-block p {
  margin-bottom: var(--space-sm);
  color: var(--color-olive);
}

.contact-block a {
  color: var(--color-clay);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

.contact-block a:hover {
  color: var(--color-graphite);
}

.contact-block strong {
  color: var(--color-graphite);
}

.visit-media img {
  border-radius: var(--radius-lg) 2px var(--radius-lg) 2px;
  box-shadow: 0 24px 70px rgba(46, 46, 44, 0.12);
}

/* --- Footer --- */
.site-footer {
  background: var(--color-graphite);
  color: var(--color-stone);
  padding-block: var(--space-md);
  text-align: center;
  font-size: 0.875rem;
}

/* --- Scroll Reveal --- */
.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.85s ease-out, transform 0.85s ease-out;
}

.scroll-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .scroll-reveal {
    opacity: 1;
    transform: none;
  }

  .program-details {
    transition: none;
  }
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
  }

  .hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-graphite);
    position: relative;
    transition: background 0.25s ease;
  }

  .hamburger::before,
  .hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-graphite);
    transition: transform 0.25s ease, top 0.25s ease;
  }

  .hamburger::before {
    top: -7px;
  }

  .hamburger::after {
    top: 7px;
  }

  .nav-menu {
    position: fixed;
    inset: 72px 0 auto 0;
    background: var(--color-cream);
    flex-direction: column;
    align-items: center;
    padding: var(--space-md);
    gap: var(--space-sm);
    transform: translateY(-150%);
    transition: transform 0.4s ease;
    display: flex;
    border-bottom: 1px solid var(--color-stone);
  }

  .nav-menu.is-open {
    transform: translateY(0);
  }

  .studio-layout,
  .visit-layout {
    grid-template-columns: 1fr;
  }

  .crop-map {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .section-title {
    font-size: 2.25rem;
  }

  .metrics {
    grid-template-columns: 1fr 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .diagram-accent {
    width: 100px;
    height: 100px;
    top: -16px;
    right: -12px;
  }

  .organic-shape {
    width: 300px;
    height: 300px;
    filter: blur(50px);
  }
}

@media (max-width: 480px) {
  .metrics {
    grid-template-columns: 1fr;
  }

  .program-grid {
    grid-template-columns: 1fr;
  }
}