/* ============================================
   NourishMama — Design Tokens & Styles
   ============================================ */

/* --- Type Scale (Fluid) --- */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* --- Spacing (4px base) --- */
  --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;
  --space-32: 8rem;

  /* --- Fonts --- */
  --font-display: 'Zodiak', 'Georgia', serif;
  --font-body: 'Nunito', 'Helvetica Neue', sans-serif;

  /* --- Radius --- */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* --- Transitions --- */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* --- Content widths --- */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;
}

/* --- Light Mode (default) --- */
:root, [data-theme="light"] {
  --color-bg:             #FAF8F5;
  --color-surface:        #FFFFFF;
  --color-surface-2:      #F5F2ED;
  --color-surface-offset: #EDE9E3;
  --color-border:         #DDD8D0;
  --color-divider:        #E8E3DC;

  --color-text:           #2C2A25;
  --color-text-muted:     #7A756C;
  --color-text-faint:     #B5B0A8;

  --color-primary:        #6B8F71;
  --color-primary-hover:  #567358;
  --color-primary-active: #43593F;

  --color-accent:         #C4917B;
  --color-accent-hover:   #A97863;

  --color-highlight:      #F0E6DA;

  --shadow-sm: 0 1px 3px oklch(0.3 0.02 70 / 0.06);
  --shadow-md: 0 4px 14px oklch(0.3 0.02 70 / 0.08);
  --shadow-lg: 0 12px 32px oklch(0.3 0.02 70 / 0.12);
}

/* --- Dark Mode --- */
[data-theme="dark"] {
  --color-bg:             #1A1916;
  --color-surface:        #222120;
  --color-surface-2:      #2A2926;
  --color-surface-offset: #1E1D1A;
  --color-border:         #3D3B37;
  --color-divider:        #333130;

  --color-text:           #D9D5CE;
  --color-text-muted:     #8E8A82;
  --color-text-faint:     #5E5B55;

  --color-primary:        #8AB490;
  --color-primary-hover:  #6B9A72;
  --color-primary-active: #567A5B;

  --color-accent:         #D4A48F;
  --color-accent-hover:   #B88A76;

  --color-highlight:      #2E2B26;

  --shadow-sm: 0 1px 3px oklch(0 0 0 / 0.2);
  --shadow-md: 0 4px 14px oklch(0 0 0 / 0.3);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #1A1916;
    --color-surface:        #222120;
    --color-surface-2:      #2A2926;
    --color-surface-offset: #1E1D1A;
    --color-border:         #3D3B37;
    --color-divider:        #333130;
    --color-text:           #D9D5CE;
    --color-text-muted:     #8E8A82;
    --color-text-faint:     #5E5B55;
    --color-primary:        #8AB490;
    --color-primary-hover:  #6B9A72;
    --color-primary-active: #567A5B;
    --color-accent:         #D4A48F;
    --color-accent-hover:   #B88A76;
    --color-highlight:      #2E2B26;
    --shadow-sm: 0 1px 3px oklch(0 0 0 / 0.2);
    --shadow-md: 0 4px 14px oklch(0 0 0 / 0.3);
    --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
  }
}

/* ============================================
   Layout
   ============================================ */

.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .container { padding-inline: var(--space-8); }
}

.container--narrow {
  max-width: var(--content-default);
}

/* ============================================
   Header / Navigation
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow 0.3s var(--ease-out);
}

.header--scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .header__inner { padding-inline: var(--space-8); }
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
}

.header__logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.header__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header__nav {
  display: none;
}

@media (min-width: 768px) {
  .header__nav {
    display: flex;
    gap: var(--space-6);
  }
}

.header__nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.header__nav a:hover {
  color: var(--color-text);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

/* ============================================
   Hero
   ============================================ */

.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
}

.hero__grid {
  display: grid;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 768px) {
  .hero__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
  }
}

.hero__content {
  max-width: 540px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-highlight);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 600;
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: 1.08;
}

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

.hero__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-8);
  max-width: 48ch;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 600;
  transition: background var(--transition-interactive),
              transform var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.hero__cta:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.hero__cta:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.hero__cta svg {
  width: 18px;
  height: 18px;
}

.hero__image {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16/10;
}

/* ============================================
   Section Styling
   ============================================ */

.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}

.section--alt {
  background: var(--color-surface-2);
}

.section__header {
  text-align: left;
  max-width: 600px;
  margin-bottom: var(--space-10);
}

@media (min-width: 768px) {
  .section__header--center {
    text-align: center;
    margin-inline: auto;
  }
}

.section__label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.section__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================
   Features (Asymmetric layout)
   ============================================ */

.features__list {
  display: grid;
  gap: clamp(var(--space-10), 6vw, var(--space-16));
}

.feature {
  display: grid;
  gap: var(--space-6);
  align-items: center;
}

@media (min-width: 768px) {
  .feature {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
  }

  .feature--reversed .feature__content {
    order: 2;
  }

  .feature--reversed .feature__visual {
    order: 1;
  }
}

.feature__visual {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
}

.feature__visual img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
}

.feature__content {
  padding-block: var(--space-4);
}

.feature__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.feature__icon svg {
  width: 28px;
  height: 28px;
  stroke-width: 1.5;
}

.feature__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.feature__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.feature__hint {
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-style: italic;
}

/* ============================================
   Principles (What sets us apart)
   ============================================ */

.principles__grid {
  display: grid;
  gap: var(--space-4);
}

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

@media (min-width: 960px) {
  .principles__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.principle {
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
}

.principle:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.principle__icon {
  font-size: 1.75rem;
  margin-bottom: var(--space-3);
  line-height: 1;
}

.principle__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.principle__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================
   Why Section (Story / Callout)
   ============================================ */

.story {
  position: relative;
}

.story__card {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  padding: clamp(var(--space-8), 5vw, var(--space-16));
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  display: grid;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 768px) {
  .story__card {
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-12);
  }
}

.story__image {
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.story__image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.story__content {}

.story__quote {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: var(--space-4);
  font-style: italic;
}

.story__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================
   CTA Banner
   ============================================ */

.cta-banner {
  text-align: center;
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: linear-gradient(
    160deg,
    oklch(from var(--color-primary) calc(l + 0.35) calc(c * 0.3) h),
    oklch(from var(--color-bg) l c h)
  );
}

.cta-banner__inner {
  max-width: 560px;
  margin-inline: auto;
}

.cta-banner__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}

.cta-banner__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-8);
  max-width: 48ch;
  margin-inline: auto;
}

.cta-banner__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-size: var(--text-base);
  font-weight: 600;
  transition: background var(--transition-interactive),
              transform var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.cta-banner__btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.cta-banner__btn:active {
  transform: translateY(0);
}

.cta-banner__btn svg {
  width: 20px;
  height: 20px;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-8);
  text-align: center;
}

.footer__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: center;
}

@media (min-width: 768px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.footer__links {
  display: flex;
  gap: var(--space-4);
}

.footer__links a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer__links a:hover {
  color: var(--color-text-muted);
}

/* ============================================
   Scroll Animations
   ============================================ */

.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 80%;
  }
}

@keyframes reveal-fade {
  to { opacity: 1; }
}

/* ============================================
   Mobile nav
   ============================================ */

.mobile-nav-toggle {
  display: flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

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

.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 100;
  background: var(--color-bg);
  padding: var(--space-8) var(--space-4);
}

.mobile-nav.open {
  display: flex;
  flex-direction: column;
}

.mobile-nav__header {
  display: flex;
  justify-content: flex-end;
  margin-bottom: var(--space-8);
}

.mobile-nav__close {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

.mobile-nav__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  list-style: none;
}

.mobile-nav__links a {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  text-decoration: none;
}