/* Whole Cycle Table — design system */
:root {
  --color-bg: #f7f5f1;
  --color-surface: #ffffff;
  --color-text: #1a2420;
  --color-text-muted: #4a5c54;
  --color-accent: #3d6b52;
  --color-accent-soft: #e8f0eb;
  --color-border: #d8ddd6;
  --color-hero-overlay: rgba(26, 36, 32, 0.62);
  --font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: Georgia, "Times New Roman", serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(26, 36, 32, 0.08);
  --header-h: 72px;
  --max-w: 1140px;
  --transition: 0.25s ease;
}

[data-theme="dark"] {
  --color-bg: #0e1a14;
  --color-surface: #152820;
  --color-text: #eae5dc;
  --color-text-muted: #b8b0a4;
  --color-accent: #7cb896;
  --color-accent-soft: #1e3328;
  --color-border: #2a4034;
  --color-hero-overlay: rgba(14, 26, 20, 0.75);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

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

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  overflow-x: hidden;
  background: var(--color-bg);
  transition: background var(--transition), color var(--transition);
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity var(--transition);
}

a:hover {
  opacity: 0.85;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.25;
  margin: 0 0 var(--space-sm);
}

p {
  margin: 0 0 var(--space-sm);
}

ul {
  margin: 0 0 var(--space-sm);
  padding-left: 1.25rem;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition), border-color var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  min-height: var(--header-h);
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.85rem;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.theme-toggle {
  background: var(--color-accent-soft);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.theme-toggle:hover {
  background: var(--color-border);
}

.nav-desktop {
  display: none;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-desktop a {
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
}

.burger-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--color-accent-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.burger-btn span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.burger-btn[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger-btn[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.burger-btn[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 1024px) {
  .nav-desktop {
    display: flex;
  }

  .burger-btn {
    display: none;
  }
}

/* Mobile nav overlay — separate from header */
.nav-overlay {
  position: fixed;
  inset: 0;
  top: var(--header-h);
  z-index: 90;
  background: var(--color-surface);
  padding: var(--space-lg) var(--space-md);
  transform: translateX(100%);
  transition: transform var(--transition);
  overflow-y: auto;
}

.nav-overlay.is-open {
  transform: translateX(0);
}

.nav-overlay ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-overlay li {
  border-bottom: 1px solid var(--color-border);
}

.nav-overlay a {
  display: block;
  padding: var(--space-md) 0;
  color: var(--color-text);
  font-size: 1.1rem;
  font-weight: 500;
}

/* Hero banner */
.page-hero {
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

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

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

.page-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--color-hero-overlay);
}

.page-hero-content {
  position: relative;
  z-index: 1;
  padding: var(--space-xl) var(--space-md);
  max-width: 720px;
  color: #fff;
}

.page-hero-content h1 {
  color: #fff;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.page-hero-content p {
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.05rem;
}

/* Sections */
.section {
  padding: var(--space-xl) 0;
}

.section-alt {
  background: var(--color-surface);
  transition: background var(--transition);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-lg);
}

.section-header p {
  color: var(--color-text-muted);
}

/* Grid */
.grid-2 {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

.grid-3 {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: background var(--transition), border-color var(--transition);
}

.card-img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

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

.card-body {
  padding: var(--space-md);
}

.card-body h3 {
  font-size: 1.15rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform 0.15s ease;
}

.btn:active {
  transform: scale(0.98);
}

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

.btn-primary:hover {
  opacity: 1;
  filter: brightness(1.08);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn-share {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border: 1px solid var(--color-border);
  width: 100%;
  margin-top: var(--space-sm);
}

/* Footer */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) 0 var(--space-md);
  transition: background var(--transition);
}

.footer-grid {
  display: grid;
  gap: var(--space-lg);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
    text-align: left;
  }
}

.footer-nav {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav li {
  margin-bottom: var(--space-xs);
}

.footer-nav a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-bottom {
  text-align: center;
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Contact form */
.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: inherit;
  font-size: 1rem;
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-xs);
  font-size: 0.9rem;
}

.checkbox-group input {
  margin-top: 4px;
}

/* Legal pages */
.legal-content {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.legal-content h1 {
  font-size: 1.75rem;
}

.legal-content h2 {
  font-size: 1.25rem;
  margin-top: var(--space-lg);
}

/* ===== Pantry: flip cards ===== */
.pantry-categories {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.category-block h2 {
  text-align: center;
  margin-bottom: var(--space-md);
}

.swap-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  justify-items: center;
}

.swap-card {
  width: 100%;
  max-width: 300px;
  height: 220px;
  perspective: 1000px;
  cursor: pointer;
}

.swap-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.55s ease;
  transform-style: preserve-3d;
}

.swap-card.is-flipped .swap-card-inner {
  transform: rotateY(180deg);
}

.swap-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: var(--radius);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow);
}

.swap-face.back {
  transform: rotateY(180deg);
  background: var(--color-accent-soft);
}

.swap-face h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
}

.swap-face .hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: auto;
}

.swap-ratio {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent);
  margin: var(--space-xs) 0;
}

.pantry-tip {
  text-align: center;
  max-width: 520px;
  margin: 0 auto var(--space-lg);
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ===== Seasonal plates ===== */
.season-zones {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 900px) {
  .season-zones {
    grid-template-columns: repeat(2, 1fr);
  }
}

.season-canvas {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 320px;
  border: 2px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.season-canvas.is-active {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.season-canvas-bg {
  position: absolute;
  inset: 0;
}

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

.season-canvas-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(14, 26, 20, 0.88) 0%, rgba(14, 26, 20, 0.35) 55%);
}

.season-canvas-content {
  position: relative;
  z-index: 1;
  padding: var(--space-md);
  color: #fff;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 320px;
}

.season-canvas-content h2 {
  color: #fff;
  font-size: 1.5rem;
}

.season-badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  margin-bottom: var(--space-xs);
}

.season-checklist {
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0 0;
}

.season-checklist li {
  padding: var(--space-xs) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.9rem;
}

.season-checklist .benefit {
  display: block;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.75);
}

.season-checklist .prep {
  display: block;
  font-size: 0.8rem;
  font-style: italic;
  color: #a8d4b8;
  margin-top: 2px;
}

.season-now-banner {
  text-align: center;
  padding: var(--space-md);
  background: var(--color-accent-soft);
  border-radius: var(--radius);
  margin-bottom: var(--space-lg);
  border: 1px solid var(--color-border);
}

/* ===== Macro builder ===== */
.macro-layout {
  display: grid;
  gap: var(--space-lg);
  align-items: start;
}

@media (min-width: 900px) {
  .macro-layout {
    grid-template-columns: 1fr 320px 1fr;
    align-items: center;
  }
}

.macro-sliders {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.macro-slider-group label {
  display: flex;
  justify-content: space-between;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: var(--space-xs);
}

.macro-slider-group input[type="range"] {
  width: 100%;
  accent-color: var(--color-accent);
}

.macro-plate-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.plate-circle {
  width: min(280px, 80vw);
  height: min(280px, 80vw);
  border-radius: 50%;
  position: relative;
  box-shadow: var(--shadow);
  border: 4px solid var(--color-surface);
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.plate-circle canvas,
.plate-circle svg {
  width: 100%;
  height: 100%;
  display: block;
}

.plate-label {
  text-align: center;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  max-width: 280px;
}

.macro-result {
  text-align: center;
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.macro-result h3 {
  font-size: 1.1rem;
}

.macro-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  font-size: 0.85rem;
}

.macro-legend span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.legend-protein { background: #5b8a72; }
.legend-fat { background: #c4a35a; }
.legend-carb { background: #8b6b4a; }

.synergy-cards {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .synergy-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

.recipe-guide-card {
  text-align: left;
}

.recipe-guide-card .card-body {
  display: flex;
  flex-direction: column;
}

/* Utility */
.text-center { text-align: center; }
.mt-lg { margin-top: var(--space-lg); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}