:root {
  --color-primary: #0b3c5d;
  --color-secondary: #2e2e2e;
  --color-accent: #00a878;
  --color-bg: #f8f9fa;
  --color-surface: #ffffff;
  --color-border: #dde1e6;
  --color-text: #1a1a1a;
  --color-muted: #6c757d;

  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.06);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --container-width: 1120px;
  --header-height: 72px;

  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;

  --transition-fast: 150ms ease-out;
  --transition-base: 200ms ease-out;
}

/* Dark-mode ready */
[data-theme="dark"] {
  --color-bg: #050608;
  --color-surface: #11141a;
  --color-border: #262a33;
  --color-text: #f5f5f5;
  --color-muted: #9ca3af;
  --shadow-soft: 0 16px 40px rgba(0, 0, 0, 0.45);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: none;
}

button,
input,
textarea {
  font-family: inherit;
}

main {
  padding-top: var(--header-height);
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Language visibility */
body:not(.lang-en) .lang-en {
  display: none;
}

body.lang-en .lang-es {
  display: none;
}

body.lang-en .lang-en {
  display: inline;
}

/* Header */
.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-logo {
  width: 180px;
  height: auto;
}

.brand-logo-placeholder {
  width: 240px;
  height: 70px;
  border-radius: 10px;
  border: 2px solid var(--color-primary);
  display: inline-flex;
  align-items: center;
  padding: 0 1rem;
  gap: 0.6rem;
  background-color: transparent;
}

.brand-mark,
.brand-mark-secondary {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  display: inline-block;
}

.brand-mark {
  background-color: var(--color-primary);
}

.brand-mark-secondary {
  background-color: var(--color-accent);
}

.brand-text {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-secondary);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-muted);
  position: relative;
  padding-bottom: 0.25rem;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  width: 100%;
}

.nav-link:hover {
  color: var(--color-text);
}

.lang-switch {
  display: inline-flex;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--color-muted);
  padding: 0.25rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
}

.lang-btn.active {
  background-color: var(--color-primary);
  color: #ffffff;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  border: none;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background-color: var(--color-secondary);
}

/* Sections */
.section {
  padding: var(--space-xl) 0;
}

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

.section-strong {
  background-color: #0b3c5d0a;
}

.section-title {
  font-size: 2rem;
  font-weight: 600;
  margin: 0 0 1rem;
  color: var(--color-secondary);
}

.section-intro {
  max-width: 36rem;
  margin: 0;
  color: var(--color-muted);
}

.grid-2 {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: var(--space-lg);
  align-items: center;
}

.hero {
  padding-top: calc(var(--space-xl) * 1.2);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: center;
}

.hero-title {
  font-size: clamp(2.1rem, 3vw, 2.7rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  color: var(--color-secondary);
}

.hero-subtitle {
  margin: 0 0 1.5rem;
  color: var(--color-muted);
  max-width: 36rem;
}

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

.hero-visual {
  justify-self: flex-end;
}

.section-header {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: center;
  margin-bottom: var(--space-lg);
}

.section-visual {
  max-width: 420px;
  justify-self: flex-end;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.card-title {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  color: var(--color-secondary);
}

.card-subtitle {
  margin: 1.25rem 0 0.5rem;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}

.institutional-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

/* Reordenar tarjetas de institucional a 2x2:
   Fila 1: Propósito (1), Misión (3)
   Fila 2: Visión (2), Valores (4) */
#institucional .institutional-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

#institucional .institutional-grid > article:nth-child(1) {
  grid-column: 1;
  grid-row: 1;
}

#institucional .institutional-grid > article:nth-child(3) {
  grid-column: 2;
  grid-row: 1;
}

#institucional .institutional-grid > article:nth-child(2) {
  grid-column: 1;
  grid-row: 2;
}

#institucional .institutional-grid > article:nth-child(4) {
  grid-column: 2;
  grid-row: 2;
}

.list-check,
.list-bullets {
  padding-left: 0;
  list-style: none;
  margin: 0.75rem 0 0;
}

.list-check li,
.list-bullets li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.35rem;
}

.list-check li::before,
.list-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background-color: var(--color-accent);
}

.timeline-wrapper {
  max-width: 420px;
  justify-self: flex-end;
}

/* Forms */
.form {
  margin-top: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group-inline {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.form label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.form input[type="text"],
.form input[type="email"],
.form textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: 0.95rem;
}

.form input:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.form textarea {
  resize: vertical;
}

.hp-wrapper {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  height: 0;
  overflow: hidden;
}

.form-status {
  min-height: 1.25rem;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.form-status.success {
  color: var(--color-accent);
}

.form-status.error {
  color: #c53030;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-base),
    color var(--transition-base), border-color var(--transition-base),
    transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: #07273a;
  border-color: #07273a;
  box-shadow: var(--shadow-soft);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover,
.btn-outline:focus-visible {
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: var(--shadow-soft);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: var(--space-lg);
  align-items: flex-start;
}

.contact-details {
  font-size: 0.95rem;
  color: var(--color-muted);
}

.contact-details a {
  color: var(--color-primary);
}

.contact-details a:hover {
  text-decoration: underline;
}

.map-wrapper {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-bottom: 1rem;
}

.map-wrapper iframe {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 0;
}

.contact-map-full {
  margin-top: var(--space-md);
}

.contact-map-full iframe {
  aspect-ratio: 16 / 6;
}

/* Floating WhatsApp */
.floating-whatsapp {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  width: 54px;
  height: 54px;
  border-radius: 999px;
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.25);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: #ffffff;
  border: 2px solid #00a878;
  z-index: 30;
}

.floating-whatsapp svg {
  width: 32px;
  height: 32px;
}

.floating-whatsapp:hover {
  transform: translateY(-2px);
}

/* Footer */
.site-footer {
  background-color: var(--color-secondary);
  color: #e5e7eb;
  padding-top: var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) repeat(2, minmax(0, 0.8fr));
  gap: var(--space-lg);
  padding-bottom: 1.5rem;
}

.footer-brand {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.footer-text {
  font-size: 0.9rem;
  color: #d1d5db;
}

.footer-title {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 0.75rem;
  color: #9ca3af;
}

.footer-nav ul,
.footer-legal ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav li,
.footer-legal li {
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
}

.footer-nav a,
.footer-legal a {
  color: #e5e7eb;
}

.footer-nav a:hover,
.footer-legal a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.3);
  padding: 0.75rem 0;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: #9ca3af;
}

/* Responsive */
@media (max-width: 960px) {
  .hero-grid,
  .section-header,
  .grid-2,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-visual,
  .section-visual,
  .timeline-wrapper {
    justify-self: flex-start;
    max-width: 360px;
  }

  .institutional-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cards-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 768px) {
  .site-nav {
    position: fixed;
    inset: var(--header-height) 0 auto 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 1.25rem 1.25rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base);
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }

  .hero {
    padding-top: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .brand-logo {
    width: 150px;
  }

  .section {
    padding: 2.5rem 0;
  }

  .floating-whatsapp {
    right: 1rem;
    bottom: 1rem;
    width: 48px;
    height: 48px;
  }
}