/* CooKind — sitio estático (Firebase Hosting) */
:root {
  --color-primary: #235631;
  --color-primary-dark: #1a4025;
  --color-accent: #3d8c5a;
  --color-bg: #f4f7f5;
  --color-surface: #ffffff;
  --color-text: #1a1d1b;
  --color-muted: #5c6560;
  --color-border: #e2e8e4;
  --font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(35, 86, 49, 0.08);
  --max: 72rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a:hover {
  text-decoration: underline;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.875rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-text);
  text-decoration: none;
}

.site-logo:hover {
  text-decoration: none;
  color: var(--color-primary);
}

/* Logo: Firebase Storage — bucket nutritrack-aztqd, ruta data/Icon_CKAI.png */
.site-logo__img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
  background: rgba(35, 86, 49, 0.06);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--color-primary);
  background: rgba(35, 86, 49, 0.06);
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  color: var(--color-primary);
  background: rgba(35, 86, 49, 0.1);
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(165deg, #e8f0eb 0%, var(--color-bg) 45%, #fff 100%);
}

.hero__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3.5rem 1.25rem 4rem;
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
    padding-top: 4.5rem;
    padding-bottom: 5rem;
  }
}

.hero__badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(35, 86, 49, 0.12);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(1.85rem, 4vw, 2.65rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  color: var(--color-text);
}

.hero__lead {
  font-size: 1.1rem;
  color: var(--color-muted);
  max-width: 36ch;
  margin: 0 0 1.75rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(35, 86, 49, 0.35);
}

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

.btn--ghost {
  background: var(--color-surface);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.hero__card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}

.hero__card h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  color: var(--color-muted);
  font-weight: 600;
}

.hero__card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero__card li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.95rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.hero__card li:last-child {
  border-bottom: none;
}

.hero__card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* Sections */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3.5rem 1.25rem;
}

.section--alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section__title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.section__intro {
  color: var(--color-muted);
  max-width: 52ch;
  margin: 0 0 2rem;
  font-size: 1.05rem;
}

.features {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 700px) {
  .features {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  border-color: rgba(35, 86, 49, 0.25);
  box-shadow: var(--shadow);
}

.feature-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(35, 86, 49, 0.1);
  color: var(--color-primary);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
}

.feature-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-muted);
  line-height: 1.55;
}

/* Compliance strip */
.compliance {
  background: linear-gradient(90deg, var(--color-primary-dark), var(--color-primary));
  color: #e8f5ec;
  padding: 2rem 1.25rem;
}

.compliance__inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

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

.compliance p {
  margin: 0;
  font-size: 0.95rem;
  max-width: 40rem;
  opacity: 0.95;
}

.compliance__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.compliance__links a {
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.5rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 8px;
  text-decoration: none;
}

.compliance__links a:hover {
  background: rgba(255, 255, 255, 0.12);
  text-decoration: none;
}

/* Footer */
.site-footer {
  background: #1c1f1d;
  color: #a8b0ab;
  padding: 2.5rem 1.25rem;
  font-size: 0.88rem;
}

.site-footer__inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  gap: 2rem;
}

@media (min-width: 640px) {
  .site-footer__inner {
    grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  }
}

.site-footer h3 {
  color: #e8ece9;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 0.75rem;
  font-weight: 600;
}

.site-footer a {
  color: #c5cdc8;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer li {
  margin-bottom: 0.5rem;
}

.site-footer__brand {
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
}

.site-footer__bottom {
  max-width: var(--max);
  margin: 0 auto;
  padding-top: 1.5rem;
  margin-top: 2rem;
  border-top: 1px solid #333;
  text-align: center;
  font-size: 0.8rem;
  color: #6d756f;
}

/* Legal documents */
.legal-page {
  background: var(--color-surface);
  min-height: 100vh;
}

.legal-doc {
  max-width: 44rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.legal-doc h1 {
  font-size: 1.65rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 0.35rem;
  color: var(--color-text);
}

.legal-doc .legal-meta {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 1.75rem;
}

.legal-doc h2 {
  font-size: 1.1rem;
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.legal-doc p,
.legal-doc li {
  font-size: 0.95rem;
  color: #333;
}

.legal-doc ul {
  padding-left: 1.25rem;
}

.legal-doc .note {
  font-size: 0.9rem;
  color: #555;
  border-left: 3px solid var(--color-primary);
  padding-left: 0.85rem;
  margin: 1.25rem 0;
}

.legal-doc code {
  font-size: 0.88em;
  background: rgba(35, 86, 49, 0.08);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.section__intro--tight {
  margin-top: -1rem;
}