/* ========================================
   KappaSea — Design System
   ======================================== */

:root {
  --color-forest: #1a3c34;
  --color-forest-light: #245a4a;
  --color-forest-dark: #122820;
  --color-cream: #f5f1e8;
  --color-cream-dark: #e8e2d4;
  --color-charcoal: #2c2c2c;
  --color-charcoal-muted: #5a5a5a;
  --color-white: #ffffff;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --shadow-sm: 0 2px 8px rgba(26, 60, 52, 0.06);
  --shadow-md: 0 8px 32px rgba(26, 60, 52, 0.1);
  --shadow-lg: 0 16px 48px rgba(26, 60, 52, 0.14);

  --header-height: 12rem;
  --banner-height: 3rem;
  --transition: 0.25s ease;
}

/* ---- Reset & Base ---- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-charcoal);
  background-color: var(--color-cream);
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

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

ul {
  list-style: none;
}

address {
  font-style: normal;
}

/* ---- Utilities ---- */

.container {
  width: 100%;
  max-width: 1140px;
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.section {
  padding-block: var(--space-2xl);
}

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

.section__eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-forest-light);
  margin-bottom: var(--space-sm);
}

.section__eyebrow--mixed {
  text-transform: none;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-forest-dark);
  letter-spacing: -0.02em;
}

.section__text {
  color: var(--color-charcoal-muted);
  margin-top: var(--space-md);
  max-width: 56ch;
}

.section__text--center {
  margin-inline: auto;
  text-align: center;
}

.section__header {
  margin-bottom: var(--space-xl);
}

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

.section__header--center .section__title {
  margin-inline: auto;
}

/* ---- Buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-family);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}

.btn--primary {
  background-color: var(--color-forest);
  color: var(--color-cream);
  border-color: var(--color-forest);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--color-forest-light);
  border-color: var(--color-forest-light);
  transform: translateY(-1px);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-forest);
  border-color: var(--color-forest);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background-color: var(--color-forest);
  color: var(--color-cream);
}

.btn--large {
  padding: 1rem 2.25rem;
  font-size: 1rem;
}

/* ---- Promo banner ---- */

.site-top {
  position: sticky;
  top: 0;
  z-index: 100;
}

.promo-banner {
  background: linear-gradient(105deg, #0f2e22 0%, #1a3c34 45%, #245a4a 100%);
  color: var(--color-cream);
  border-bottom: 2px solid #00b4d8;
  box-shadow: 0 4px 20px rgba(15, 46, 34, 0.25);
}

.promo-banner__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: var(--banner-height);
  padding-block: 0.625rem;
}

.promo-banner__text {
  margin: 0;
  font-size: clamp(0.875rem, 2.2vw, 1.0625rem);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-align: center;
  line-height: 1.4;
}

.promo-banner__text a {
  color: #00b4d8;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

.promo-banner__text a:hover,
.promo-banner__text a:focus-visible {
  color: #48cae4;
}

/* ---- Navigation ---- */

.site-header {
  position: relative;
  z-index: 100;
  background-color: rgba(245, 241, 232, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-cream-dark);
  box-shadow: var(--shadow-sm);
}

.nav {
  position: relative;
}

.nav__bar {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  min-height: var(--header-height);
  padding-block: var(--space-xs) var(--space-sm);
  gap: var(--space-md);
}

.nav__logo {
  display: flex;
  align-items: flex-start;
  flex-shrink: 0;
  line-height: 0;
  z-index: 2;
  background: transparent;
}

.nav__logo-img {
  display: block;
  height: 11.6rem;
  width: auto;
  max-width: min(15.2rem, 68vw);
  object-fit: contain;
  object-position: left center;
  image-rendering: auto;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-left: auto;
  margin-top: auto;
  padding-bottom: var(--space-xs);
}

.nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-charcoal);
  transition: color var(--transition);
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-forest);
}

.nav__link--cta {
  padding: 0.625rem 1.25rem;
  background-color: var(--color-forest);
  color: var(--color-cream);
  border-radius: var(--radius-sm);
}

.nav__link--cta:hover,
.nav__link--cta:focus-visible {
  background-color: var(--color-forest-light);
  color: var(--color-cream);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-forest-dark);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

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

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

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

/* ---- Hero ---- */

.hero {
  position: relative;
  padding-block: var(--space-2xl) calc(var(--space-2xl) + var(--space-lg));
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(36, 90, 74, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(26, 60, 52, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
}

.hero__eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-forest-light);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--color-forest-dark);
}

.hero__title em {
  font-style: normal;
  color: var(--color-forest);
}

.hero__subtitle {
  margin-top: var(--space-md);
  font-size: clamp(1rem, 2vw, 1.1875rem);
  line-height: 1.7;
  color: var(--color-charcoal-muted);
  max-width: 58ch;
}

.hero__subtitle + .hero__subtitle {
  margin-top: var(--space-sm);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.hero__benefits {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-cream-dark);
}

.hero__benefit {
  padding-left: var(--space-md);
  border-left: 3px solid rgba(26, 60, 52, 0.18);
}

.hero__benefit-title {
  display: block;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-forest-dark);
  margin-bottom: 0.375rem;
  line-height: 1.35;
}

.hero__benefit-text {
  display: block;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-charcoal-muted);
}

/* ---- About ---- */

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

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

.about__card {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  min-height: 200px;
}

.about__card--primary {
  background-color: var(--color-forest);
  color: var(--color-cream);
  margin-top: var(--space-lg);
}

.about__card--secondary {
  background-color: var(--color-cream-dark);
  color: var(--color-forest-dark);
}

.about__card-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: var(--space-xs);
}

.about__card-value {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.about__origin {
  margin-top: var(--space-md);
  padding-left: var(--space-md);
  border-left: 3px solid var(--color-forest);
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-charcoal-muted);
  font-style: italic;
}

.about__origin em {
  font-style: normal;
  font-weight: 600;
  color: var(--color-forest);
}

/* ---- Crops (localized pain points) ---- */

.crops__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.crop-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
  background-color: var(--color-cream);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), box-shadow var(--transition);
}

.crop-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.crop-card__badge {
  display: inline-block;
  align-self: flex-start;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-forest-dark);
  background-color: var(--color-cream-dark);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
}

.crop-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-forest-dark);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.crop-card__text {
  font-size: 0.9375rem;
  color: var(--color-charcoal-muted);
  line-height: 1.65;
  flex-grow: 1;
}

.crop-card__points {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-cream-dark);
}

.crop-card__points li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.875rem;
  color: var(--color-charcoal);
  line-height: 1.5;
}

.crop-card__points li + li {
  margin-top: var(--space-xs);
}

.crop-card__points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 6px;
  background-color: var(--color-forest);
  border-radius: 50%;
}

/* ---- Features ---- */

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.feature-card {
  padding: var(--space-lg);
  background-color: var(--color-cream);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  color: var(--color-forest);
  margin-bottom: var(--space-md);
}

.feature-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-forest-dark);
  margin-bottom: var(--space-sm);
}

.feature-card__text {
  font-size: 0.9375rem;
  color: var(--color-charcoal-muted);
  line-height: 1.65;
}

/* ---- CTA ---- */

.cta__inner {
  text-align: center;
  max-width: 560px;
  margin-inline: auto;
}

.cta__title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 600;
  color: var(--color-forest-dark);
  letter-spacing: -0.02em;
}

.cta__text {
  margin-block: var(--space-md) var(--space-lg);
  color: var(--color-charcoal-muted);
  line-height: 1.65;
}

.cta__social {
  margin-top: var(--space-lg);
}

.cta__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
  transition: transform var(--transition), box-shadow var(--transition);
}

.cta__social-link:hover,
.cta__social-link:focus-visible {
  transform: translateY(-3px) scale(1.05);
}

.cta__social-icon {
  display: block;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

/* ---- Footer ---- */

.footer {
  background-color: var(--color-forest-dark);
  color: rgba(245, 241, 232, 0.75);
  padding-top: var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.footer__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
  width: 8.5rem;
  height: 8.5rem;
  background-color: var(--color-white);
  padding: var(--space-xs);
}

.footer__logo-img {
  display: block;
  height: 6.5rem;
  width: auto;
  max-width: 12rem;
  object-fit: contain;
  image-rendering: auto;
}

.footer__tagline {
  margin-top: var(--space-sm);
  font-size: 0.9375rem;
  line-height: 1.65;
  max-width: 38ch;
}

.footer__origin {
  margin-top: var(--space-md);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: rgba(245, 241, 232, 0.55);
  max-width: 42ch;
  font-style: italic;
}

.footer__origin em {
  font-style: normal;
  color: var(--color-cream);
}

.footer__heading {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-cream);
  margin-bottom: var(--space-md);
}

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

.footer__nav a {
  font-size: 0.9375rem;
  transition: color var(--transition);
}

.footer__nav a:hover,
.footer__nav a:focus-visible {
  color: var(--color-cream);
}

.footer__address p + p {
  margin-top: var(--space-sm);
}

.footer__address strong {
  color: var(--color-cream);
  font-weight: 500;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  padding-block: var(--space-md);
  border-top: 1px solid rgba(245, 241, 232, 0.12);
  font-size: 0.8125rem;
}

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

.footer__legal a {
  transition: color var(--transition);
}

.footer__legal a:hover,
.footer__legal a:focus-visible {
  color: var(--color-cream);
}

/* ---- Responsive ---- */

@media (max-width: 900px) {
  .hero__benefits {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md) var(--space-lg);
  }

  .crops__grid,
  .features__grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-inline: auto;
  }

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

  .about__visual {
    order: -1;
  }

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

  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 9.6rem;
    --banner-height: 3.75rem;
  }

  .nav__bar {
    align-items: flex-start;
    padding-block: var(--space-xs) var(--space-sm);
  }

  .nav__logo-img {
    height: 9.2rem;
    max-width: min(12.8rem, 68vw);
  }

  .nav__toggle {
    display: flex;
    position: absolute;
    top: var(--space-sm);
    right: var(--space-md);
  }

  .nav__menu {
    margin-left: 0;
  }

  .nav__menu {
    position: fixed;
    top: calc(var(--banner-height) + var(--header-height));
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background-color: var(--color-cream);
    border-bottom: 1px solid var(--color-cream-dark);
    padding: var(--space-sm) var(--space-md) var(--space-md);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .nav__menu.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__link {
    display: block;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-cream-dark);
  }

  .nav__link--cta {
    text-align: center;
    margin-top: var(--space-sm);
    border-bottom: none;
  }

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

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .section {
    padding-block: var(--space-xl);
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

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

  .about__card--primary {
    margin-top: 0;
  }
}