/* ===== HEADER RESPONSIVE STYLES ===== */

/* Header right container with flexbox layout */
.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: space-between;
  flex-shrink: 0;
}

/* Theme toggle button */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
  transform: translateY(-1px);
}

/* Sidebar toggle button */
.sidebar-toggle {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 1rem;
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  flex-shrink: 0;
}

.sidebar-toggle:hover {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
  transform: translateY(-1px);
}

/* Update existing header h1 */
header h1 {
  flex-shrink: 0;
}

/* Update existing header nav */
header nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

header nav a {
  white-space: nowrap;
}

/* Mobile header styles - 320px and up */
@media (max-width: 767px) {
  header {
    padding: 0.75rem 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
    min-height: 60px;
  }

  header h1 {
    font-size: 1.5rem;
    order: 1;
  }

  .header-right {
    order: 2;
    gap: 0.5rem;
    justify-content: flex-end;
  }

  /* Mobile theme toggle - smaller size and proper touch targets */
  .theme-toggle {
    padding: 0.4rem 0.6rem;
    font-size: 0.9rem;
    min-width: 40px;
    min-height: 40px;
    border-radius: 4px;
  }

  /* Show sidebar toggle on mobile */
  .sidebar-toggle {
    display: flex;
    padding: 0.4rem 0.6rem;
    font-size: 0.9rem;
    min-width: 40px;
    min-height: 40px;
    border-radius: 4px;
    margin-right: 0.25rem;
  }

  /* Mobile navigation - full width below header elements */
  header nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding: 0.5rem 0;
    gap: 1rem;
    border-top: 1px solid var(--border-color);
    margin-top: 0.5rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  header nav::-webkit-scrollbar {
    display: none;
  }

  header nav a {
    font-size: 0.9rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all 0.2s ease;
  }

  header nav a:hover,
  header nav a:focus {
    background: rgba(88, 166, 255, 0.1);
    outline: none;
  }
}

/* Extra small mobile - 320px to 480px */
@media (max-width: 480px) {
  header {
    padding: 0.5rem 0.75rem;
    min-height: 56px;
  }

  header h1 {
    font-size: 1.25rem;
  }

  .header-right {
    gap: 0.25rem;
  }

  .theme-toggle,
  .sidebar-toggle {
    padding: 0.35rem 0.5rem;
    font-size: 0.85rem;
    min-width: 36px;
    min-height: 36px;
  }

  header nav a {
    font-size: 0.85rem;
    padding: 0.2rem 0.4rem;
  }
}

/* Tablet styles - 768px to 1023px */
@media (min-width: 768px) and (max-width: 1023px) {
  header {
    padding: 0.875rem 1.5rem;
  }

  header h1 {
    font-size: 1.6rem;
  }

  .header-right {
    gap: 0.875rem;
  }

  .theme-toggle {
    padding: 0.45rem 0.7rem;
    font-size: 0.95rem;
  }

  header nav {
    gap: 1.5rem;
  }

  header nav a {
    font-size: 0.95rem;
  }
}

/* Large desktop - 1024px and up */
@media (min-width: 1024px) {
  .theme-toggle:active {
    transform: translateY(0);
  }

  .sidebar-toggle:active {
    transform: translateY(0);
  }
}