/* ==========================================================================
   site.css — shared styles for nutriologaanamaria.com.mx platform
   Read shared/design-system.md before editing.
   ========================================================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif:ital,wght@0,400;0,600;1,400;1,600&family=Work+Sans:wght@400;500;600&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

/* --------------------------------------------------------------------------
   Custom properties
   -------------------------------------------------------------------------- */
:root {
  /* Colors */
  --color-bg:          #fdfcf9;
  --color-card:        #ffffff;
  --color-text:        #1b1c1a;
  --color-muted:       #54433d;
  --color-primary:     #ae5f3e;
  --color-accent:      #904828;
  --color-accent-dark: #7a3c20;
  --color-gold:        #755b00;
  --color-border:      #f0ede8;
  --color-tag:         #f5f2ed;
  --color-tag-border:  #d9c5a8;
  --color-sand:        #c5a47e;

  /* Typography */
  --font-heading: 'Noto Serif', Georgia, serif;
  --font-body:    'Work Sans', 'Helvetica Neue', Arial, sans-serif;
  --font-ui:      'Plus Jakarta Sans', 'Helvetica Neue', Arial, sans-serif;

  /* Layout */
  --max-w:        1100px;
  --max-w-wide:   1344px;
  --max-w-narrow: 860px;

  /* Border radius */
  --radius-card: 16px;
  --radius-pill: 100px;
  --radius-tag:  20px;
  --radius-btn:  6px;
  --radius-img:  16px;

  /* Shadows */
  --shadow-card:  0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-nav:   0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-focus: 0 0 0 2px rgba(144, 72, 40, 0.25);

  /* Spacing */
  --section-gap: 48px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  line-height: 1.2;
}

h1, h2 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text);
}

h3 {
  font-family: var(--font-heading);
  font-weight: 500;
  color: var(--color-muted);
}

h4, h5, h6 {
  font-family: var(--font-ui);
  font-weight: 600;
  color: var(--color-text);
}

p {
  margin: 0;
}

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

a:hover {
  color: var(--color-accent-dark);
}

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

/* --------------------------------------------------------------------------
   Layout utilities
   -------------------------------------------------------------------------- */
.site-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.site-container-narrow {
  max-width: var(--max-w-narrow);
  margin: 0 auto;
  padding: 0 24px;
}

.site-container-wide {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 32px;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.site-btn {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s;
  line-height: 1;
}

.site-btn:hover {
  background: var(--color-accent-dark);
  color: #fff;
}

.site-btn:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.site-btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--color-accent);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: var(--radius-btn);
  border: 1.5px solid var(--color-accent);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
  line-height: 1;
}

.site-btn-outline:hover {
  background: var(--color-accent);
  color: #fff;
}

.site-btn-outline:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.site-card {
  background: var(--color-card);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

/* --------------------------------------------------------------------------
   Tag pills
   -------------------------------------------------------------------------- */
.tag-pill {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  padding: 5px 12px;
  border: 1.5px dashed var(--color-tag-border);
  border-radius: var(--radius-tag);
  background: transparent;
  color: #b08660;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.tag-pill:hover {
  background: #fdf6ef;
  border-color: var(--color-sand);
}

.tag-pill.active {
  background: var(--color-accent);
  color: #fff;
  border-style: solid;
  border-color: var(--color-accent);
}

.tag-pill.active:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
}

/* --------------------------------------------------------------------------
   Nav placeholder (filled by site.js)
   -------------------------------------------------------------------------- */
#site-nav {
  position: relative;
}

/* --------------------------------------------------------------------------
   Footer placeholder (filled by site.js)
   -------------------------------------------------------------------------- */
#site-footer {
  /* Footer styles are in footer.html inline or below */
}

/* --------------------------------------------------------------------------
   Nav styles (used by nav.html)
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 9999;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 20px 32px;
}

.site-logo {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
}

.site-logo:hover {
  color: var(--color-text);
}

.site-nav {
  display: none;
  align-items: center;
  gap: 40px;
}

@media (min-width: 768px) {
  .site-nav {
    display: flex;
  }
}

.site-nav__link {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  opacity: 0.8;
  text-decoration: none;
  transition: opacity 0.15s;
}

.site-nav__link:hover {
  opacity: 1;
  color: var(--color-text);
}

.site-nav__link--cta {
  font-weight: 700;
  color: #fff;
  background: var(--color-accent);
  padding: 8px 20px;
  border-radius: 4px;
  opacity: 1;
}

.site-nav__link--cta:hover {
  background: var(--color-accent-dark);
  color: #fff;
  opacity: 1;
}

.site-header__icons {
  display: flex;
  align-items: center;
  gap: 16px;
}

.site-hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: 4px;
}

.site-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s;
}

@media (min-width: 768px) {
  .site-hamburger {
    display: none;
  }
}

.site-mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 4px 24px 8px;
  flex-direction: column;
  z-index: 9998;
  box-shadow: var(--shadow-nav);
}

.site-mobile-nav.open {
  display: flex;
}

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

.site-mobile-nav__link {
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  opacity: 0.8;
  text-decoration: none;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
  display: block;
}

.site-mobile-nav__link:last-child {
  border-bottom: none;
}

.site-mobile-nav__link--cta {
  font-weight: 700;
  color: var(--color-accent);
  opacity: 1;
}

/* --------------------------------------------------------------------------
   Footer styles (used by footer.html)
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-tag);
  border-top: 1px solid #e8e3dd;
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 48px 32px;
  gap: 24px;
}

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

.site-footer__brand .site-logo {
  display: block;
  margin-bottom: 4px;
}

.site-footer__domain {
  font-family: var(--font-ui);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text);
  opacity: 0.4;
  margin: 0;
}

.site-footer__right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

@media (min-width: 768px) {
  .site-footer__right {
    align-items: flex-end;
  }
}

.site-footer__nav {
  display: flex;
  gap: 24px;
}

.site-footer__link {
  font-family: var(--font-ui);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
  opacity: 0.6;
  text-decoration: none;
}

.site-footer__link:hover {
  opacity: 1;
  color: var(--color-text);
}

.site-footer__social {
  display: flex;
  gap: 16px;
  align-items: center;
}

.site-footer__social-link {
  color: var(--color-muted);
  opacity: 0.7;
  text-decoration: none;
  transition: opacity 0.15s;
  font-size: 18px;
  line-height: 1;
}

.site-footer__social-link:hover {
  opacity: 1;
  color: var(--color-accent);
}

.site-footer__copy {
  font-family: var(--font-ui);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
  opacity: 0.35;
  margin: 0;
}