/* ==========================================================================
   Layout — grid, flexbox, contenedores
   ========================================================================== */

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

body {
  margin: 0;
  overflow-x: hidden;
}

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

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 1024px) {
  .container { padding: 0 var(--space-xl); }
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height-mobile);
}

@media (min-width: 1024px) {
  .site-header { height: var(--header-height); }
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.site-logo img,
.site-logo svg {
  width: 120px;
  height: auto;
}

.site-logo a {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 20px;
  color: var(--text-primary);
}

/* Navegación principal */
.main-navigation {
  display: none;
}

@media (min-width: 1024px) {
  .main-navigation {
    display: flex;
    align-items: center;
  }

  .main-navigation ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--space-lg);
  }

  .main-navigation li {
    position: relative;
  }

  .main-navigation a {
    display: block;
    padding: 8px 0;
    font-size: 18px;
    color: var(--text-primary);
    position: relative;
  }

  .main-navigation a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-fast);
  }

  .main-navigation a:hover::after,
  .main-navigation .current-menu-item > a::after {
    width: 100%;
  }

  /* Sub-menús desplegables */
  .main-navigation ul ul {
    position: absolute;
    top: calc(100% + var(--space-sm));
    left: 0;
    min-width: 480px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(var(--glass-blur));
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
  }

  .main-navigation li:hover > ul {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .main-navigation ul ul a {
    font-size: 15px;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
  }

  .main-navigation ul ul a:hover {
    background: var(--glass-bg-hover);
  }

  .main-navigation ul ul a::after {
    display: none;
  }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Mobile nav toggle */
.mobile-nav-toggle {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  cursor: pointer;
}

@media (min-width: 1024px) {
  .mobile-nav-toggle { display: none; }
}

.hamburger {
  width: 24px;
  height: 18px;
  position: relative;
}

.hamburger span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 8px; }
.hamburger span:nth-child(3) { top: 16px; }

.mobile-nav-toggle.is-active .hamburger span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.mobile-nav-toggle.is-active .hamburger span:nth-child(2) {
  opacity: 0;
}
.mobile-nav-toggle.is-active .hamburger span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile nav overlay */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(10, 10, 10, 0.85);
  -webkit-backdrop-filter: blur(30px);
  backdrop-filter: blur(30px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

[data-theme="light"] .mobile-nav-overlay {
  background: rgba(255, 255, 255, 0.9);
}

.mobile-nav-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-overlay ul {
  list-style: none;
  margin: 0;
  padding: 0 var(--space-lg);
}

.mobile-nav-overlay li a {
  display: flex;
  align-items: center;
  min-height: 48px;
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

.mobile-nav-overlay ul ul { padding-left: var(--space-md); }
.mobile-nav-overlay ul ul li a { font-size: 18px; font-weight: 400; min-height: 40px; }

/* Grids reutilizables */
.grid {
  display: grid;
  gap: var(--space-md);
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1023px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 599px) {
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Secciones */
.section {
  padding: var(--space-2xl) 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-xl);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  background: radial-gradient(ellipse at top, var(--bg-secondary), var(--bg-primary) 60%);
  overflow: hidden;
}

.hero__content {
  max-width: 760px;
  padding: var(--space-xl) var(--space-md);
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

/* CTA section */
.cta-section {
  background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
  text-align: center;
  padding: var(--space-2xl) 0;
}

/* Footer */
.site-footer {
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-2xl) 0 var(--space-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

@media (max-width: 767px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-grid h4 {
  font-size: 15px;
  color: var(--text-primary);
}

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

.footer-grid li {
  margin-bottom: var(--space-xs);
}

.footer-grid a {
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-grid a:hover {
  color: var(--accent-primary);
}

.social-icons {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.social-icons a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

.social-icons svg {
  width: 16px;
  height: 16px;
  fill: var(--text-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-color);
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-bottom ul {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

/* WhatsApp float widget */
.whatsapp-float {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-2);
  z-index: 998;
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  fill: #ffffff;
}