:root {
  /* === Brand / Material-like Color Tokens === */
  --color-primary: #5f7f3c;
  --color-primary-hover: #4e6931;
  --color-primary-container: #a0c878;
  --color-primary-fixed: #ddeb9d;
  --color-primary-fixed-dim: #c9df7c;

  --color-on-primary: #ffffff;
  --color-on-primary-container: #24320f;
  --color-on-primary-fixed: #1d260b;
  --color-on-primary-fixed-variant: #49642a;

  --color-secondary: #6b7d33;
  --color-secondary-container: #ddeb9d;
  --color-secondary-fixed: #edf5bd;
  --color-secondary-fixed-dim: #ddeb9d;

  --color-on-secondary: #ffffff;
  --color-on-secondary-container: #2f3a12;
  --color-on-secondary-fixed: #1f2608;
  --color-on-secondary-fixed-variant: #596d23;

  --color-tertiary: #8a6f3c;
  --color-tertiary-container: #f1dfb8;
  --color-tertiary-fixed: #fff1cf;
  --color-tertiary-fixed-dim: #ecd59f;

  --color-on-tertiary: #ffffff;
  --color-on-tertiary-container: #33250a;
  --color-on-tertiary-fixed: #241900;
  --color-on-tertiary-fixed-variant: #6d5428;

  --color-error: #ba1a1a;
  --color-error-container: #ffdad6;
  --color-on-error: #ffffff;
  --color-on-error-container: #93000a;

  /* === Surface & Background === */
  --color-background: #F4FAEC;
  --color-on-background: #1f2118;

  --color-surface: #fffdf6;
  --color-surface-dim: #e4dfd1;
  --color-surface-bright: #fffdf6;

  --color-surface-container-lowest: #ffffff;
  --color-surface-container-low: #faf6e9;
  --color-surface-container: #f4efdf;
  --color-surface-container-high: #E5EFD7;
  --color-surface-container-highest: #e8e1ce;

  --color-on-surface: #1f2118;
  --color-on-surface-variant: #4c4f3f;

  --color-surface-variant: #ebe6d6;
  --color-surface-tint: #5f7f3c;

  /* === Outline === */
  --color-outline: #7c806b;
  --color-outline-variant: #cdc8b8;

  /* === Inverse === */
  --color-inverse-surface: #303126;
  --color-inverse-on-surface: #f5f1e4;
  --color-inverse-primary: #ddeb9d;

  /* === Additional UI Colors === */
  --color-white: #ffffff;
  --color-black: #111;

  --color-gray-50: #f9faf7;
  --color-gray-100: #f1f2eb;
  --color-gray-200: #e3e5d8;
  --color-gray-300: #cfd3bf;
  --color-gray-400: #aeb49a;
  --color-gray-500: #7d856b;
  --color-gray-600: #5f6651;
  --color-gray-700: #434a37;
  --color-gray-800: #2d3327;
  --color-gray-900: #1f2118;

  --color-green-50: #f8fbea;
  --color-green-100: #edf5bd;
  --color-green-200: #ddeb9d;
  --color-green-300: #c2db78;
  --color-green-400: #a0c878;
  --color-green-500: #82aa57;
  --color-green-600: #6f9446;
  --color-green-700: #5f8039;
  --color-green-800: #4d682f;
  --color-green-900: #33451f;

  --color-yellow-50: #fffbea;
  --color-yellow-100: #fff1b8;
  --color-yellow-500: #facc15;

  --color-orange-50: #fff7ed;
  --color-orange-100: #ffedd5;
  --color-orange-500: #f97316;
  --color-orange-600: #ea580c;

  --color-red-50: #fef2f2;
  --color-red-100: #fee2e2;
  --color-red-500: #ef4444;
  --color-red-600: #dc2626;

  --color-blue-50: #eff6ff;
  --color-blue-100: #dbeafe;
  --color-blue-500: #3b82f6;
  --color-blue-600: #2563eb;

  /* === Semantic Status Colors === */
  --color-success: #6f9446;
  --color-success-container: #ddeb9d;
  --color-on-success-container: #24320f;

  --color-warning: #f97316;
  --color-warning-container: #ffedd5;
  --color-on-warning-container: #7c2d12;

  --color-danger: #dc2626;
  --color-danger-container: #fee2e2;
  --color-on-danger-container: #7f1d1d;

  --color-info: #3b82f6;
  --color-info-container: #dbeafe;
  --color-on-info-container: #1e3a8a;

  /* === Typography === */
  --font-family: 'Outfit', system-ui, -apple-system, sans-serif;

  /* Font Sizes */
  --font-size-display: 48px;
  --font-size-h1: 32px;
  --font-size-h2: 20px;
  --font-size-body-lg: 18px;
  --font-size-body-md: 16px;
  --font-size-label-bold: 14px;
  --font-size-label-sm: 12px;
  --font-size-xs: 10px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --font-size-5xl: 48px;

  /* Line Heights */
  --line-height-display: 1.1;
  --line-height-h1: 1.2;
  --line-height-h2: 1.3;
  --line-height-body-lg: 1.6;
  --line-height-body-md: 1.5;
  --line-height-label: 1.2;

  /* Letter Spacing */
  --letter-spacing-display: -0.04em;
  --letter-spacing-h1: -0.02em;
  --letter-spacing-h2: -0.01em;
  --letter-spacing-label-bold: 0.02em;
  --letter-spacing-label-sm: 0.04em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;

  /* === Spacing === */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --gutter-bento: 1.5rem;
  --cell-padding: 2rem;
  --stack-gap: 0.75rem;
  --inline-gap: 1rem;

  /* === Border Radius === */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;

  /* === Shadows === */
  --shadow-sm: 0 1px 2px rgba(31, 33, 24, 0.05);
  --shadow-md: 0 10px 30px rgba(31, 33, 24, 0.06);
  --shadow-lg: 0 16px 40px rgba(31, 33, 24, 0.08);
  --shadow-xl: 0 24px 60px rgba(31, 33, 24, 0.12);
  --shadow-2xl: 0 32px 80px rgba(31, 33, 24, 0.18);
  --shadow-bento: 0 10px 30px rgba(31, 33, 24, 0.06);

  /* === Transitions === */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-medium: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-spring: 200ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* === Layout === */
  --container-max: 1280px;
  --container-max-wide: 1440px;
  --navbar-height: 64px;
  --navbar-backdrop-blur: 0.75rem;
  --navbar-indicator-height: 0.125rem;
  --navbar-submenu-max-width: 48rem;
  --z-index-dropdown: 10;
}

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

html {
  scroll-padding-top: calc(var(--navbar-height) + (2 * var(--space-6)) + var(--space-4));
}

body {
  margin: 0;
  color: var(--color-on-background);
  background-color: var(--color-background);
  font-family: var(--font-family);
}

.landing-page {
  --landing-section-padding: var(--space-24);
  --landing-grid-gap: var(--space-16);
}

a {
  color: inherit;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  z-index: calc(var(--z-index-dropdown) + 1);
  padding: var(--space-3) var(--space-4);
  color: var(--color-on-primary);
  text-decoration: none;
  background-color: var(--color-primary);
  border-radius: var(--radius-md);
  transform: translateY(calc(-100% - var(--space-4)));
  transition: transform var(--transition-fast);
}

.skip-link:focus-visible {
  outline: 3px solid var(--color-on-primary);
  outline-offset: var(--space-1);
  transform: translateY(0);
}

/* ===== Navbar ===== */

.nutlens-navbar {
  position: sticky;
  top: 0;
  width: 100%;
  padding: var(--space-6) clamp(var(--space-4), 5vw, var(--space-20));
  z-index: var(--z-index-dropdown);
}

.navbar__container {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  max-width: var(--container-max);
  min-height: var(--navbar-height);
  margin: 0 auto;
  padding: 0 var(--space-8);
  background-color: var(--color-surface-container-lowest);
  background-color: color-mix(in srgb, var(--color-white) 85%, transparent);
  border-radius: var(--radius-full);
  -webkit-backdrop-filter: blur(var(--navbar-backdrop-blur));
  backdrop-filter: blur(var(--navbar-backdrop-blur));
}

.navbar__menu,
.navbar__submenu {
  margin: 0;
  padding: 0;
  list-style: none;
}

.navbar__menu {
  display: flex;
  align-items: center;
  justify-self: start;
  gap: var(--space-6);
  font-size: 14px;
  font-weight: 400;
}

.navbar__menu a,
.navbar__logo a,
.back-link {
  text-decoration: none;
}

.navbar__menu a {
  position: relative;
  color: var(--color-gray-700);
}

.navbar__menu a,
.navbar__services-toggle {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding-block: var(--space-2);
  line-height: var(--line-height-label);
}

.navbar__menu a:hover,
.navbar__services-toggle:hover,
.back-link:hover {
  color: var(--color-primary-hover);
}

.navbar__menu a.is-active {
  color: var(--color-black);
}

.navbar__menu a.is-active::after {
  position: absolute;
  right: 0;
  bottom: var(--space-1);
  left: 0;
  height: var(--navbar-indicator-height);
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
  content: '';
}

.navbar__services {
  position: relative;
}

.navbar__services-toggle {
  gap: var(--space-1);
  padding-inline: 0;
  color: var(--color-gray-700);
  background: transparent;
  border: 0;
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  text-align: left;
  cursor: pointer;
}

.navbar__services-toggle .material-symbols-outlined {
  color: currentColor;
  font-size: var(--font-size-lg);
  transform: translateX(-4px) translateY(2px);
}

.navbar__services-toggle[aria-expanded="true"] .material-symbols-outlined {
  transform: translateX(-4px) rotate(180deg);
}

.navbar__submenu {
  position: absolute;
  z-index: var(--z-index-dropdown);
  top: 100%;
  left: calc(var(--space-4) * -1);

  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));

  width: min(var(--navbar-submenu-max-width), calc(100vw - (2 * var(--space-4))));
  gap: var(--space-2) var(--space-4);
  padding: var(--space-6);

  background-color: var(--color-surface-container-lowest);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
}

.navbar__submenu[hidden] {
  display: none;
}

.navbar__submenu a {
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr);
  align-items: center;
  gap: var(--space-4);

  min-height: 5rem;
  padding: var(--space-3);
  border-radius: var(--radius-xl);
  text-decoration: none;
}

.navbar__submenu a:hover {
  background-color: var(--color-gray-100);
}

.navbar__submenu-icon {
  display: grid;
  place-items: center;

  width: 3.5rem;
  height: 3.5rem;

  color: var(
    --submenu-icon-color,
    var(--color-on-primary-fixed-variant)
  );

  background-color: var(
    --submenu-icon-background,
    var(--color-surface-container-high)
  );
  border-radius: var(--radius-xl);
  font-size: var(--font-size-2xl);
}

.navbar__submenu-icon--check {
  --submenu-icon-background: var(--color-primary-fixed);
  --submenu-icon-color: var(--color-on-primary-fixed-variant);
}

.navbar__submenu-icon--recipe {
  --submenu-icon-background: var(--color-tertiary-container);
  --submenu-icon-color: var(--color-on-tertiary-fixed-variant);
}

.navbar__submenu-icon--gallery {
  --submenu-icon-background: var(--color-info-container);
  --submenu-icon-color: var(--color-on-info-container);
}

.navbar__submenu-icon--challenge {
  --submenu-icon-background: var(--color-warning-container);
  --submenu-icon-color: var(--color-on-warning-container);
}

.navbar__submenu-copy {
  display: grid;
  gap: var(--space-1);
  min-width: 0;
}

.navbar__submenu-title {
  color: var(--color-on-background);
  font-size: var(--font-size-body-md);
  font-weight: 500;
  line-height: var(--line-height-label);
}

.navbar__submenu-description {
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-body-md);
}

.navbar__logo {
  display: flex;
  align-items: center;
  justify-self: center;
  gap: var(--space-1);
}

.navbar__logo a {
  color: var(--color-on-primary-container);
  font-size: var(--font-size-2xl);
  font-weight: 600;
}

.navbar__logo .material-symbols-outlined {
  color: var(--color-primary);
  font-size: var(--font-size-h1);
}

.navbar__profile {
  justify-self: end;
  color: var(--color-gray-700);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.nutlens-navbar a:focus-visible,
.nutlens-navbar button:focus-visible,
.back-link:focus-visible {
  border-radius: var(--radius-sm);
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

@media (max-width: 60rem) {
  .navbar__services {
    position: static;
  }

  .navbar__submenu {
    right: var(--space-4);
    left: var(--space-4);
    grid-template-columns: 1fr;
    width: auto;
    padding: var(--space-4);
  }
}

/* ===== Page Shell ===== */

.page-shell {
  width: min(100% - (2 * var(--space-8)), 48rem);
  margin: clamp(var(--space-16), 12vh, var(--space-24)) auto;
}

.page-shell h1 {
  max-width: 18ch;
  margin: 0 0 var(--space-4);
  color: var(--color-on-background);
  font-size: clamp(var(--font-size-h1), 6vw, var(--font-size-display));
  line-height: var(--line-height-h1);
  letter-spacing: var(--letter-spacing-h1);
}

.page-shell p {
  max-width: 60ch;
  margin: 0;
  color: var(--color-on-surface-variant);
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body-lg);
}

.back-link {
  display: inline-block;
  margin-bottom: var(--space-8);
  color: var(--color-primary-hover);
  font-weight: 600;
}

@media (max-width: 48rem) {
  .nutlens-navbar {
    padding: var(--space-4);
  }

  .navbar__container {
    grid-template-areas:
      'menu menu'
      'logo profile';
    grid-template-columns: 1fr auto;
    gap: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-2xl);
  }

  .navbar__menu {
    grid-area: menu;
    justify-content: flex-start;
    justify-self: stretch;
    gap: var(--space-6);
  }

  .navbar__logo {
    grid-area: logo;
    justify-self: start;
  }

  .navbar__profile {
    grid-area: profile;
  }

  .page-shell {
    width: min(100% - (2 * var(--space-4)), 48rem);
  }
}

@media (max-width: 30rem) {
  .navbar__menu {
    flex-wrap: wrap;
    gap: var(--space-3) var(--space-5);
  }
}

@media (min-width: 100rem) {
  .landing-page {
    --container-max: 1440px;
    --font-size-display: 54px;
    --font-size-body-md: 17px;
    --landing-section-padding: 7rem;
    --landing-grid-gap: var(--space-20);
  }
}

@media (min-width: 120rem) {
  .landing-page {
    --container-max: 1600px;
    --font-size-display: 60px;
    --font-size-body-md: 18px;
    --landing-section-padding: 8rem;
    --landing-grid-gap: var(--space-24);
  }
}

@media (min-width: 140rem) {
  .landing-page {
    --container-max: 1760px;
  }
}