/**
 * Layout CSS - Header, Footer, Grid, Navegación
 * Mantiene y extiende los estilos de layout existentes
 */

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(11, 11, 11, 0.65);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(6px);
}

.header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  gap: 12px;
}

.header__brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header__logo {
  height: 40px;
}

.header__title {
  font-weight: 800;
}

/* Navegación principal */
.nav {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.nav a {
  color: var(--white);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.nav a:hover {
  color: var(--ckm-green);
}

/* Navegación con estado activo */
.nav a.nav--active {
  color: var(--ckm-green);
}

/* Navegación responsive - Burger menu */
.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle:hover {
  color: var(--ckm-green);
}

@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }
  
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--ckm-black);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    flex-direction: column;
    padding: 20px;
    gap: 20px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }
  
  .nav.nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav a {
    font-size: 0.95rem;
  }
}

/* Breadcrumb */
.breadcrumb {
  padding: var(--space-md) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.breadcrumb__list {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: var(--font-size-sm);
}

.breadcrumb__item {
  color: var(--muted);
}

.breadcrumb__item:not(:last-child)::after {
  content: "/";
  margin-left: var(--space-sm);
  color: var(--muted);
}

.breadcrumb__link {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumb__link:hover {
  color: var(--ckm-green);
}

.breadcrumb__current {
  color: var(--white);
  font-weight: 600;
}

/* Sections */
.section {
  padding: 56px 0;
}

.section__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 10px;
  font-weight: 800;
}

.section__desc {
  margin-bottom: 26px;
  color: var(--muted);
}

/* Grid system */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Layout principal */
.main-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
}

/* Sidebar layout */
.sidebar-layout {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: 1fr;
}

@media (min-width: 1024px) {
  .sidebar-layout {
    grid-template-columns: 280px 1fr;
  }
  
  .sidebar-layout--reverse {
    grid-template-columns: 1fr 280px;
  }
}

/* Footer */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: #0a0a0a;
  margin-top: auto;
}

.footer__row {
  display: grid;
  gap: 18px;
  padding: 18px 0;
  align-items: start;
}

.footer__brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.footer__logo {
  height: 34px;
}

.footer__contact {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.footer__contact a {
  color: var(--white);
  text-decoration: none;
}

.footer__contact a:hover {
  color: var(--ckm-green);
}

.footer__social {
  display: grid;
  gap: 10px;
}

.social {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  text-decoration: none;
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  transition: all 0.2s ease;
}

.social:hover {
  color: var(--ckm-green);
  border-color: var(--ckm-green);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* WhatsApp float */
.wa-float {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ckm-green);
  color: #00240f;
  box-shadow: var(--shadow-lg);
  text-decoration: none;
  border: 2px solid #007a34;
  z-index: var(--z-dropdown);
  transition: all 0.2s ease;
}

.wa-float:hover {
  background: var(--ckm-green-2);
  transform: scale(1.05);
}

/* Responsive adjustments */
@media (min-width: 720px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 860px) {
  .footer__row {
    grid-template-columns: 1fr 1fr auto;
  }
}