/* ============================================================
   medicinageneralfuncional.com — Design System
   Sección 4 del documento maestro · Sherezade Transmedia
   ============================================================ */

:root {
  /* Colores primarios */
  --color-primary:        #2D5F4F;
  --color-primary-light:  #4A8B75;
  --color-primary-subtle: #EAF2EE;

  /* Secundarios */
  --color-accent:         #C17F4A;
  --color-accent-hover:   #A66B38;

  /* Neutros */
  --color-text:           #1C2B27;
  --color-text-secondary: #4A5E58;
  --color-background:     #FAFCFB;
  --color-surface:        #F0F5F2;
  --color-border:         #D4E4DC;

  /* Semánticos */
  --color-success:        #3A8F5F;
  --color-error:          #B94040;

  /* Tipografía */
  --font-heading: 'Lora', Georgia, serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --text-xs: 0.75rem; --text-sm: 0.875rem; --text-base: 1rem;
  --text-lg: 1.125rem; --text-xl: 1.25rem; --text-2xl: 1.5rem;
  --text-3xl: 1.875rem; --text-4xl: 2.25rem; --text-5xl: 3rem;

  /* Layout */
  --container-max: 1200px;
  --container-prose: 720px;

  --space-1: .25rem; --space-2: .5rem; --space-3: .75rem; --space-4: 1rem;
  --space-6: 1.5rem; --space-8: 2rem; --space-12: 3rem; --space-16: 4rem;
  --space-24: 6rem;

  --radius-sm: 4px; --radius-md: 8px; --radius-lg: 16px; --radius-xl: 24px;
  --radius-full: 9999px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-family: var(--font-body); font-size: var(--text-base);
  line-height: 1.65; color: var(--color-text); background: var(--color-background);
  -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4 { font-family: var(--font-heading); line-height: 1.25; margin: 0 0 var(--space-4); color: var(--color-text); }
h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
@media (min-width: 768px) { h1 { font-size: var(--text-5xl); } }
p { margin: 0 0 var(--space-4); }
a { color: var(--color-primary); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--color-primary-light); }
ul, ol { padding-left: 1.4rem; margin: 0 0 var(--space-4); }
li { margin-bottom: var(--space-2); }
table { border-collapse: collapse; width: 100%; margin-bottom: var(--space-6); }
th, td { border: 1px solid var(--color-border); padding: var(--space-3) var(--space-4); text-align: left; vertical-align: top; }
th { background: var(--color-primary-subtle); font-family: var(--font-heading); }

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--space-6); }
.prose { max-width: var(--container-prose); margin-left: auto; margin-right: auto; }

.skip-link { position: absolute; left: -9999px; background: var(--color-primary); color: #fff; padding: var(--space-3) var(--space-4); z-index: 100; }
.skip-link:focus { left: var(--space-4); top: var(--space-4); }

/* ---------- Botones ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: 14px 28px; border-radius: var(--radius-md); font-family: var(--font-body);
  font-weight: 600; font-size: var(--text-base); min-height: 48px; min-width: 48px;
  text-decoration: none; border: none; cursor: pointer; transition: background .2s ease, color .2s ease; }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-hover); color: #fff; }
.btn-secondary { background: transparent; color: var(--color-primary); border: 2px solid var(--color-primary); }
.btn-secondary:hover { background: var(--color-primary); color: #fff; }
.btn-light { background: #fff; color: var(--color-primary); }
.btn-light:hover { background: var(--color-primary-subtle); color: var(--color-primary); }
.btn-ghost-light { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.7); }
.btn-ghost-light:hover { border-color: #fff; color: #fff; background: rgba(255,255,255,.1); }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(250,252,251,.96);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--color-border); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); min-height: 72px; }
.site-logo img { height: 40px; width: auto; }
.site-nav { display: none; }
.site-nav ul { display: flex; align-items: center; gap: var(--space-6); list-style: none; margin: 0; padding: 0; }
.site-nav li { margin: 0; }
.site-nav a { text-decoration: none; font-weight: 500; font-size: var(--text-sm); color: var(--color-text); }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--color-primary); }
.nav-dropdown { position: relative; }
.nav-dropdown > button { background: none; border: none; font: inherit; font-weight: 500; font-size: var(--text-sm);
  color: var(--color-text); cursor: pointer; padding: var(--space-2) 0; display: inline-flex; align-items: center; gap: 4px; }
.nav-dropdown > button::after { content: "▾"; font-size: .7em; }
.nav-dropdown-menu { position: absolute; top: 100%; left: 0; background: #fff; border: 1px solid var(--color-border);
  border-radius: var(--radius-md); box-shadow: 0 8px 24px rgba(45,95,79,.12); padding: var(--space-2);
  min-width: 220px; display: none; }
.nav-dropdown:hover .nav-dropdown-menu, .nav-dropdown:focus-within .nav-dropdown-menu { display: block; }
.nav-dropdown-menu a { display: block; padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm); }
.nav-dropdown-menu a:hover { background: var(--color-primary-subtle); }
.header-cta { display: none; }
.nav-toggle { display: inline-flex; flex-direction: column; gap: 5px; background: none; border: none;
  cursor: pointer; padding: 12px; min-width: 48px; min-height: 48px; justify-content: center; align-items: center; }
.nav-toggle span { width: 24px; height: 2px; background: var(--color-text); transition: transform .2s; }
.mobile-nav { display: none; border-top: 1px solid var(--color-border); background: var(--color-background); padding: var(--space-4) var(--space-6) var(--space-8); }
.mobile-nav.open { display: block; }
.mobile-nav ul { list-style: none; padding: 0; margin: 0 0 var(--space-4); }
.mobile-nav a { display: block; padding: var(--space-3) 0; text-decoration: none; font-weight: 500; }
.mobile-nav .mobile-sub { padding-left: var(--space-4); font-size: var(--text-sm); }
@media (min-width: 960px) {
  .site-nav { display: block; }
  .header-cta { display: inline-flex; padding: 10px 20px; min-height: 44px; font-size: var(--text-sm); }
  .nav-toggle, .mobile-nav { display: none !important; }
}

/* ---------- Hero ---------- */
.hero { background: linear-gradient(160deg, var(--color-primary) 0%, #234C3F 100%); color: #fff; padding: var(--space-16) 0; }
.hero .container { display: grid; gap: var(--space-12); align-items: center; }
.hero h1 { color: #fff; }
.hero .hero-sub { font-family: var(--font-heading); font-size: var(--text-xl); color: #DCE9E3; margin-bottom: var(--space-4); }
.hero p { color: #DCE9E3; font-size: var(--text-lg); max-width: 38rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-8); }
.hero-photo img { border-radius: var(--radius-xl); box-shadow: 0 20px 60px rgba(0,0,0,.3); }
@media (min-width: 900px) {
  .hero { padding: var(--space-24) 0; min-height: 70vh; display: flex; align-items: center; }
  .hero .container { grid-template-columns: 7fr 5fr; }
}

/* Hero interior (páginas) */
.page-hero { background: var(--color-primary-subtle); padding: var(--space-16) 0 var(--space-12); }
.page-hero h1 { max-width: 56rem; }
.page-hero .lead { font-size: var(--text-lg); color: var(--color-text-secondary); max-width: 44rem; }

/* ---------- Trust bar ---------- */
.trust-bar { background: #fff; border-bottom: 1px solid var(--color-border); padding: var(--space-4) 0; }
.trust-bar .container { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-4) var(--space-8);
  font-size: var(--text-sm); color: var(--color-text-secondary); font-weight: 500; }
.trust-bar span { display: inline-flex; align-items: center; gap: var(--space-2); }

/* ---------- Secciones ---------- */
.section { padding: var(--space-16) 0; }
.section-subtle { background: var(--color-primary-subtle); }
.section-kicker { text-transform: uppercase; letter-spacing: .12em; font-size: var(--text-xs);
  font-weight: 600; color: var(--color-accent); margin-bottom: var(--space-2); }
.section-intro { color: var(--color-text-secondary); max-width: 44rem; font-size: var(--text-lg); }
@media (min-width: 768px) { .section { padding: var(--space-24) 0; } }

/* ---------- Tarjetas ---------- */
.card-grid { display: grid; gap: var(--space-6); margin-top: var(--space-8); }
.card-grid-2 { grid-template-columns: 1fr; }
.card-grid-3, .card-grid-4 { grid-template-columns: 1fr; }
@media (min-width: 700px) { .card-grid-2, .card-grid-3, .card-grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .card-grid-3 { grid-template-columns: repeat(3, 1fr); } .card-grid-4 { grid-template-columns: repeat(4, 1fr); } }

.card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: var(--space-8); transition: box-shadow .2s ease, transform .2s ease; display: flex; flex-direction: column; }
.card:hover { box-shadow: 0 4px 20px rgba(45,95,79,.12); transform: translateY(-2px); }
.card h3 { font-size: var(--text-xl); }
.card p { color: var(--color-text-secondary); font-size: var(--text-sm); flex-grow: 1; }
.card .card-link { font-weight: 600; font-size: var(--text-sm); text-decoration: none; color: var(--color-primary); }
.card .card-link::after { content: " →"; }
.card .card-link:hover { text-decoration: underline; }

.card-media { padding: 0; overflow: hidden; }
.card-media img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.card-media .card-body { padding: var(--space-6); display: flex; flex-direction: column; flex-grow: 1; }

/* ---------- Acordeón ---------- */
.accordion { border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; background: #fff; margin-top: var(--space-8); }
.accordion details { border-bottom: 1px solid var(--color-border); }
.accordion details:last-child { border-bottom: none; }
.accordion summary { cursor: pointer; padding: var(--space-6); font-family: var(--font-heading);
  font-size: var(--text-xl); font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { content: "+"; font-size: var(--text-2xl); color: var(--color-accent); flex-shrink: 0; line-height: 1; }
.accordion details[open] summary::after { content: "–"; }
.accordion .accordion-body { padding: 0 var(--space-6) var(--space-6); color: var(--color-text-secondary); }

/* ---------- Principios / iconos ---------- */
.principles { display: grid; gap: var(--space-6); margin-top: var(--space-8); grid-template-columns: repeat(2, 1fr); }
@media (min-width: 900px) { .principles { grid-template-columns: repeat(4, 1fr); } }
.principle { text-align: center; padding: var(--space-6) var(--space-4); }
.principle .icon { width: 64px; height: 64px; margin: 0 auto var(--space-4); border-radius: var(--radius-full);
  background: var(--color-primary-subtle); display: flex; align-items: center; justify-content: center;
  color: var(--color-primary); }
.principle .icon svg { width: 28px; height: 28px; }
.principle h3 { font-size: var(--text-lg); margin-bottom: var(--space-2); }
.principle p { font-size: var(--text-sm); color: var(--color-text-secondary); }

/* ---------- Sobre la Dra (2 col) ---------- */
.split { display: grid; gap: var(--space-12); align-items: center; }
@media (min-width: 900px) { .split { grid-template-columns: 5fr 7fr; } .split.split-rev { grid-template-columns: 7fr 5fr; } }
.split-photo img { border-radius: var(--radius-xl); }
.credential { display: inline-block; background: var(--color-primary-subtle); color: var(--color-primary);
  font-weight: 600; font-size: var(--text-sm); padding: var(--space-2) var(--space-4); border-radius: var(--radius-full); margin-bottom: var(--space-4); }

/* ---------- CTA final ---------- */
.cta-band { background: linear-gradient(160deg, var(--color-primary) 0%, #234C3F 100%); color: #fff; padding: var(--space-16) 0; text-align: center; }
.cta-band h2 { color: #fff; }
.cta-band p { color: #DCE9E3; max-width: 40rem; margin-left: auto; margin-right: auto; }
.cta-band .hero-actions { justify-content: center; }

/* ---------- Formulario ---------- */
.form-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-8); max-width: 600px; }
.form-field { margin-bottom: var(--space-6); }
.form-field label { display: block; font-weight: 600; font-size: var(--text-sm); margin-bottom: var(--space-2); }
.form-field input, .form-field textarea { width: 100%; padding: var(--space-3) var(--space-4); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); font: inherit; background: var(--color-background); }
.form-field input:focus, .form-field textarea:focus { outline: 2px solid var(--color-primary-light); border-color: var(--color-primary-light); }
.form-note { font-size: var(--text-xs); color: var(--color-text-secondary); }
.hp-field { position: absolute; left: -9999px; height: 0; overflow: hidden; }

/* ---------- Artículos / prose ---------- */
.article-body { max-width: var(--container-prose); margin: 0 auto; }
.article-body h2 { margin-top: var(--space-12); }
.article-body h3 { margin-top: var(--space-8); }
.article-body img { border-radius: var(--radius-lg); margin: var(--space-8) auto; }
.article-meta { color: var(--color-text-secondary); font-size: var(--text-sm); margin-bottom: var(--space-8); }
.article-footer-bio { display: flex; gap: var(--space-6); align-items: center; background: var(--color-surface);
  border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); margin-top: var(--space-16); }
.article-footer-bio img { width: 88px; height: 88px; border-radius: var(--radius-full); object-fit: cover; flex-shrink: 0; }
.article-footer-bio p { font-size: var(--text-sm); color: var(--color-text-secondary); margin: 0; }
.article-footer-bio .bio-name { font-family: var(--font-heading); font-weight: 700; font-size: var(--text-base); color: var(--color-text); }

/* ---------- Receta ---------- */
.recipe-meta { display: flex; flex-wrap: wrap; gap: var(--space-3); margin: var(--space-6) 0; }
.recipe-meta span { background: var(--color-primary-subtle); color: var(--color-primary); font-size: var(--text-sm);
  font-weight: 500; padding: var(--space-2) var(--space-4); border-radius: var(--radius-full); }
.recipe-section { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: var(--space-8); margin-bottom: var(--space-8); }
.recipe-section h2 { font-size: var(--text-2xl); margin-top: 0; }

/* ---------- FAQ ---------- */
.faq { max-width: var(--container-prose); margin: var(--space-8) auto 0; }
.faq details { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md); margin-bottom: var(--space-3); padding: 0; }
.faq summary { cursor: pointer; padding: var(--space-4) var(--space-6); font-weight: 600; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--color-accent); font-size: var(--text-xl); flex-shrink: 0; }
.faq details[open] summary::after { content: "–"; }
.faq .faq-body { padding: 0 var(--space-6) var(--space-4); color: var(--color-text-secondary); }

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size: var(--text-sm); color: var(--color-text-secondary); margin-bottom: var(--space-4); }
.breadcrumb a { color: var(--color-text-secondary); }
.breadcrumb span { margin: 0 var(--space-2); }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-text); color: #B9C8C2; padding: var(--space-16) 0 var(--space-8); margin-top: var(--space-16); }
.site-footer a { color: #DCE9E3; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-grid { display: grid; gap: var(--space-8); margin-bottom: var(--space-12); }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.footer-brand .brand-name { font-family: var(--font-heading); font-size: var(--text-xl); color: #fff; margin-bottom: var(--space-2); }
.footer-brand p { font-size: var(--text-sm); }
.site-footer h4 { color: #fff; font-size: var(--text-base); margin-bottom: var(--space-3); }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: var(--space-2); font-size: var(--text-sm); }
.footer-social { display: flex; gap: var(--space-4); margin-top: var(--space-3); }
.footer-social a { display: inline-flex; width: 40px; height: 40px; border-radius: var(--radius-full);
  background: rgba(255,255,255,.08); align-items: center; justify-content: center; }
.footer-social svg { width: 18px; height: 18px; fill: currentColor; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: var(--space-6);
  display: flex; flex-wrap: wrap; gap: var(--space-4); justify-content: space-between; font-size: var(--text-xs); }

/* ---------- WhatsApp flotante ---------- */
.wa-float { position: fixed; right: var(--space-6); bottom: var(--space-6); z-index: 40;
  width: 56px; height: 56px; border-radius: var(--radius-full); background: #25D366;
  display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 16px rgba(0,0,0,.25); }
.wa-float svg { width: 30px; height: 30px; fill: #fff; }
.wa-float:hover { background: #1EBE5A; }

/* ---------- Utilidades ---------- */
.text-center { text-align: center; }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.muted { color: var(--color-text-secondary); }
.note-box { background: var(--color-primary-subtle); border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm); padding: var(--space-4) var(--space-6); font-size: var(--text-sm);
  color: var(--color-text-secondary); margin: var(--space-8) 0; }