/* ============================================================
   Nutriage — sitio institucional
   Ciencia aplicada al envejecimiento saludable
   ============================================================ */

:root {
  --bg:        #F2EFE6;
  --panel:     #EAE4D6;
  --ink:       #04364A;
  --deep:      #022734;
  --gold:      #C9892F;
  --lime:      #E6E85F;
  --terra:     #C8432A;
  --ink-12:    rgba(4, 54, 74, 0.12);
  --ink-15:    rgba(4, 54, 74, 0.15);
  --ink-60:    rgba(4, 54, 74, 0.60);
  --cream-85:  rgba(242, 239, 230, 0.85);
  --cream-80:  rgba(242, 239, 230, 0.80);
  --cream-70:  rgba(242, 239, 230, 0.70);
  --cream-60:  rgba(242, 239, 230, 0.60);
  --cream-50:  rgba(242, 239, 230, 0.50);
  --cream-40:  rgba(242, 239, 230, 0.40);
  --cream-20:  rgba(242, 239, 230, 0.20);
  --cream-15:  rgba(242, 239, 230, 0.15);

  --font-display: 'Archivo', sans-serif;
  --font-body:    'Newsreader', serif;
  --font-mono:    'IBM Plex Mono', monospace;

  --gradient-dark: radial-gradient(120% 140% at 30% 0%, #0a4a63 0%, #04364A 55%, #022734 100%);
  --gradient-dark-r: radial-gradient(120% 140% at 70% 0%, #0a4a63 0%, #04364A 55%, #022734 100%);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--gold); }

::selection { background: var(--lime); color: var(--ink); }

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

.eyebrow {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin: 0;
}

/* ---------- Header / nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  background: rgba(242, 239, 230, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--ink-12);
}

.brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 26px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.brand .dot { color: var(--gold); }

.nav {
  display: flex;
  gap: 32px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* Mobile nav toggle — hidden on desktop */
.nav-toggle { display: none; }
.nav-toggle-btn {
  display: none;
  border: 1px solid var(--ink-15);
  background: transparent;
  color: var(--ink);
  padding: 8px 10px;
  border-radius: 2px;
  cursor: pointer;
}
.nav-toggle-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  margin: 4px 0;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

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

.btn {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 16px 28px;
  border-radius: 2px;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn-primary { background: var(--lime); color: var(--ink); }
.btn-primary:hover { background: var(--bg); color: var(--ink); }
.btn-ghost { border: 1px solid var(--cream-40); color: var(--bg); }
.btn-ghost:hover { border-color: var(--bg); color: var(--bg); }

/* ---------- Sections shared ---------- */

.section { padding: 100px 48px; }
.container { max-width: 1200px; margin: 0 auto; }

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin: 0 0 12px;
  color: var(--gold);
}
.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 4vw, 52px);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 56px;
  max-width: 700px;
  text-wrap: balance;
}

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

.hero {
  background: var(--gradient-dark);
  color: var(--bg);
  padding: 110px 48px 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin: 0 0 28px;
  color: var(--lime);
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(44px, 6.5vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 1000px;
  text-wrap: balance;
}
.hero-title .mark {
  background: linear-gradient(transparent 78%, #E6E85F 78%, #E6E85F 96%, transparent 96%);
  color: var(--bg);
  padding: 0 4px;
}
.hero-lede {
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.5;
  max-width: 680px;
  margin: 32px 0 0;
  color: var(--cream-85);
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 44px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ---------- Nosotros ---------- */

.nosotros { max-width: 1200px; margin: 0 auto; }

.panel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--panel);
  border: 1px solid var(--ink-15);
}
.panel {
  background: var(--panel);
  padding: 40px 36px;
  box-shadow: 0 0 0 1px var(--ink-15);
}
.panel .eyebrow { font-size: 12px; margin: 0 0 20px; }
.panel p.body { font-size: 19px; line-height: 1.6; margin: 0; }

/* ---------- Productos ---------- */

.productos { background: var(--panel); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 40px;
}
.product-card {
  background: var(--bg);
  border: 1px solid var(--ink-15);
  display: flex;
  flex-direction: column;
}
.product-media {
  height: 300px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--ink-15);
}
.product-media img.cover { width: 100%; height: 100%; object-fit: cover; }
.product-media img.contain { height: 92%; width: auto; object-fit: contain; }
.product-body {
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
}
.product-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin: 0;
}
.product-kicker.regen { color: var(--terra); }
.product-kicker.nutri { color: var(--gold); }
.product-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 32px;
  letter-spacing: -0.02em;
  margin: 0;
}
.product-body p { font-size: 18px; line-height: 1.6; margin: 0; }
.product-body ul { font-size: 17px; line-height: 1.7; margin: 0; padding-left: 20px; }
.product-note {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.15em;
  margin: 40px 0 0;
  color: var(--ink-60);
}

/* ---------- Evento ---------- */

.evento {
  background: var(--gradient-dark-r);
  color: var(--bg);
}
.evento .section-eyebrow { color: var(--lime); }
.evento .section-title { margin-bottom: 20px; max-width: 760px; }
.evento-lede {
  font-size: 20px;
  line-height: 1.55;
  max-width: 640px;
  margin: 0 0 60px;
  color: var(--cream-80);
}
.evento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 48px;
  align-items: start;
}
.talks-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin: 0 0 24px;
  color: var(--cream-60);
}
.talks-label.second { margin-top: 44px; }
.talks { border-top: 1px solid var(--cream-20); }
.talk {
  display: flex;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--cream-20);
}
.talk .num { font-family: var(--font-mono); font-size: 13px; color: var(--lime); }
.talk .title { font-size: 19px; }

.quote-card {
  background: var(--bg);
  color: var(--ink);
  padding: 44px 40px;
  position: relative;
}
.quote-card .mark-q {
  font-family: var(--font-body);
  font-size: 110px;
  line-height: 0.6;
  color: var(--gold);
  position: absolute;
  top: 38px;
  left: 32px;
}
.quote-card blockquote {
  font-size: 22px;
  line-height: 1.55;
  font-style: italic;
  margin: 44px 0 24px;
}
.quote-attr {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin: 0 0 36px;
}
.quote-bio {
  border-top: 1px solid rgba(4, 54, 74, 0.2);
  padding-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 16.5px;
  line-height: 1.5;
}
.quote-bio p { margin: 0; }
.quote-creds {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
}

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

.site-footer {
  background: var(--deep);
  color: var(--bg);
  padding: 72px 48px 48px;
}
.footer-top {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
  justify-content: space-between;
  align-items: flex-end;
}
.footer-brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 30px;
  letter-spacing: -0.02em;
  margin: 0 0 10px;
}
.footer-brand .dot { color: var(--gold); }
.footer-tag {
  font-size: 17px;
  margin: 0;
  color: var(--cream-70);
  max-width: 420px;
  line-height: 1.55;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
}
.footer-links a { color: var(--bg); }
.footer-links a:hover { color: var(--lime); }
.footer-links .muted { color: var(--cream-50); }
.footer-legal {
  max-width: 1200px;
  margin: 48px auto 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--cream-40);
  border-top: 1px solid var(--cream-15);
  padding-top: 24px;
}

/* ============================================================
   Responsive polish
   ============================================================ */

@media (max-width: 900px) {
  .product-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .site-header { padding: 14px 20px; position: relative; }
  .nav-toggle-btn { display: block; }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(242, 239, 230, 0.98);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--ink-12);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav a {
    padding: 16px 20px;
    border-top: 1px solid var(--ink-12);
    font-size: 13px;
  }
  .nav-toggle:checked ~ .nav { max-height: 320px; }
  .nav-toggle:checked ~ .nav-toggle-btn span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-toggle-btn span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-toggle-btn span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .section { padding: 64px 20px; }
  .hero { padding: 72px 20px 80px; }
  .nosotros { padding-left: 20px; padding-right: 20px; }

  .panel { padding: 32px 24px; }
  .product-body { padding: 32px 24px; }
  .quote-card { padding: 36px 24px; }
  .evento-grid { gap: 32px; }
  .footer-top { gap: 32px; }
  .site-footer { padding: 56px 20px 40px; }
}