/* ============================================
   HEADER - Sin transiciones para cambio instantáneo
   ============================================ */

.header {
  width: 100%;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  backdrop-filter: blur(10px);
  background: rgba(var(--bg-secondary-rgb), 0.85);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 56px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 1.25rem;
  font-weight: var(--font-bold);
}

.logo-icon {
  font-size: 1.4rem;
}

.logo-text {
  font-size: 1.1rem;
}

.logo-highlight {
  color: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Language Selector */
.language-selector {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.7rem;
  font-size: 0.8rem;
  font-weight: var(--font-medium);
  color: var(--text-primary);
  cursor: pointer;
}

.lang-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
}

.lang-arrow {
  font-size: 0.6rem;
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.4rem 0;
  min-width: 130px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  z-index: var(--z-dropdown);
  box-shadow: var(--shadow-md);
}

.language-selector.open .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.8rem;
  color: var(--text-primary);
  text-decoration: none;
}

.lang-option:hover {
  background: var(--bg-hover);
}

.lang-option.active {
  color: var(--accent);
  background: var(--accent-light);
}

/* Theme Toggle */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  font-size: 1rem;
}

.theme-toggle:hover {
  background: var(--bg-hover);
  transform: scale(1.02);
}

/* Responsive */
@media (max-width: 768px) {
  .header-inner {
    padding: 0 1rem;
    height: 52px;
  }

  .logo-text {
    font-size: 1rem;
  }

  .logo-icon {
    font-size: 1.2rem;
  }

  .lang-btn {
    padding: 0.3rem 0.5rem;
    font-size: 0.7rem;
  }

  .lang-option {
    font-size: 0.75rem;
    padding: 0.4rem 0.6rem;
  }

  .theme-toggle {
    padding: 0.3rem 0.5rem;
    font-size: 0.9rem;
  }
}