/* Form Layout */
/* Styles for the main form container, ensuring proper layout and constraints */
#tplprev {
  display: flex; /* Use flexbox for column layout */
  flex-direction: column; /* Stack children vertically */
  row-gap: 1rem; /* Space between rows */
  box-sizing: border-box; /* Include padding and border in width/height calculations */
  position: relative; /* Establish positioning context for absolute children */
  width: 100%; /* Full width of parent */
  padding: 0; /* Add horizontal padding */
  margin-left: 0;
  height: 100%; /* Fill available height */
  max-height: 100%; /* Prevent expansion beyond parent height */
  overflow: hidden; /* Clip any overflow to prevent footer issues */
}

/* Styles for the template textarea, allowing user input for templates */
#tplprev textarea {
  box-decoration-break: slice; /* Control box decoration breaking */
  overflow: auto; /* Enable scrolling if content overflows */
  padding: 0.77em 1.18em; /* Match preview-output padding for consistency */
  scrollbar-color: var(--md-default-fg-color--lighter) transparent; /* Custom scrollbar color */
  scrollbar-width: auto; /* Thin scrollbar for better UI */
  touch-action: auto; /* Allow touch interactions */
  min-height: 475px; /* Set minimum text area height to handle template length */
  white-space: pre-wrap; /* Preserve whitespace and wrap, matching preview-output */
  word-break: normal; /* Prevent word breaking, matching preview-output */
  flex: 1; /* Grow to fill available space */
  width: 100%; /* Full width */
  box-sizing: border-box; /* Include padding in height/width */
  background-color: var(
    --md-code-bg-color
  ); /* Match preview-output background */
  border-width: 0; /* No border, matching preview-output */
  border-radius: 0.1rem; /* Slight rounding */
  color: var(--md-code-fg-color); /* Match preview-output text color */
  font-feature-settings: "kern"; /* Enable kerning */
  font-family: var(--md-code-font-family); /* Match preview-output font */
  font-size: 0.7rem; /* Match preview-output text size */
}

/* Focus state for textarea to enhance usability */
#tplprev textarea:focus {
  outline: 2px solid var(--md-accent-fg-color); /* Highlight on focus, using theme accent */
  outline-offset: -1px; /* Keep outline within element bounds */
}

/* Styles for the template header container, isolating the header for reliable rendering */
#tplprev .template-wrapper .template-header-container {
  display: flex;
  flex-direction: row;
  background: var(--md-default-bg-color--lighter) !important;
  border-bottom: 1px solid var(--md-default-fg-color--lightest); /* Match tab-header border */
  position: sticky; /* Stick to top when scrolling textarea */
  top: 0; /* Align to top edge */
  z-index: 2; /* Ensure above textarea content */
  flex-shrink: 0; /* Prevent shrinking */
}

/* Styles for the template header bar within its container */
#tplprev .template-wrapper .template-header {
  padding: 0.5rem 1rem; /* Match tab-header padding */
  color: var(--md-default-fg-color--light); /* Match tab-header text color */
  font-family: var(--md-default-font-family); /* Match Material theme font */
  font-size: 0.9rem; /* Slightly larger for header clarity */
  font-weight: 500; /* Medium weight for consistency with tab labels */
  transition: background 0.2s, color 0.2s; /* Smooth transitions, matching tab labels */
}

/* Hover state for template header to match tab label interactivity */
#tplprev .template-wrapper .template-header:hover {
  background: var(
    --md-default-bg-color--light
  ); /* Match tab label hover background */
  color: var(--md-default-fg-color); /* Match tab label hover text color */
}

/* Styles for the controls container, organizing input fields */
#tplprev .controls {
  display: flex; /* Use flexbox */
  flex-direction: row; /* Horizontal layout */
  flex-wrap: wrap; /* Wrap to next line if needed */
  column-gap: 0.5rem; /* Space between columns */
  row-gap: 0.5rem; /* Space between rows */
}

/* Shared styles for input elements within the form */
#tplprev input {
  background-color: var(--md-code-bg-color); /* Match code background */
  border-width: 0; /* No border */
  border-radius: 0.1rem; /* Slight rounding */
  color: var(--md-code-fg-color); /* Text color */
  font-feature-settings: "kern"; /* Enable kerning */
  font-family: var(--md-code-font-family); /* Use code font */
}

/* Styles for number field labels */
.numfield {
  font-size: 0.7rem; /* Smaller text for labels */
  display: flex; /* Use flexbox */
  flex-direction: row; /* Horizontal layout for label and input */
  align-items: center; /* Center vertically */
  column-gap: 0.5rem; /* Space between label and input */
  min-width: 120px; /* Minimum width for alignment */
}

/* Styles for number inputs */
#tplprev input[type="number"] {
  width: 5ch; /* Width based on character count */
  flex: 1; /* Grow to fill available space */
  font-size: 0.7rem; /* Match label size */
}

/* Styles for fieldsets within controls */
#tplprev fieldset {
  margin-top: -0.5rem; /* Adjust spacing above fieldset */
  display: flex; /* Use flexbox */
  flex: 1; /* Grow to fill space */
  column-gap: 0.5rem; /* Space between columns */
  flex-wrap: wrap; /* Wrap if needed */
  row-gap: 0.5rem; /* Space between rows */
}

/* Styles for template wrapper */
#tplprev .template-wrapper {
  display: flex; /* Use flexbox */
  flex-direction: column; /* Stack header container and textarea vertically */
  flex: 1; /* Grow to fill space */
  width: 100%; /* Full width */
  background: var(
    --md-code-bg-color
  ); /* Match tabs and textarea for consistent blending */
}

/* Styles for result wrapper */
#tplprev .result-wrapper {
  flex: 1; /* Grow to fill space */
  display: flex; /* Use flexbox */
  width: 100%; /* Full width */
  overflow: hidden; /* Prevent overflow */
  max-height: 100%; /* Limit to parent height */
}

/* Styles for result preview area */
#result {
  font-size: 0.7rem; /* Match textarea text size */
  background-color: var(--md-code-bg-color); /* Match code background */
  scrollbar-color: var(--md-default-fg-color--lighter) transparent; /* Custom scrollbar */
  scrollbar-width: thin; /* Thin scrollbar */
  touch-action: auto; /* Allow touch interactions */
  overflow: hidden; /* Prevent overflow */
  padding: 0; /* No padding */
  margin: 0; /* No margin */
  min-height: 200px; /* Minimum height */
  height: 100%; /* Fill available space */
  flex: 1; /* Grow to fill space */
  width: 100%; /* Full width */
  box-sizing: border-box; /* Include padding in height/width */
  border-radius: 0.1rem; /* Slight rounding */
}

/* Styles for bold text in preview */
#result b {
  color: var(--md-code-hl-special-color); /* Highlight color for bold */
}

/* Styles for italic text in preview */
#result i {
  color: var(--md-code-hl-keyword-color); /* Highlight color for italic */
}

/* Styles for loading indicator */
#tplprev .loading {
  position: absolute; /* Position over form */
  inset: 0; /* Cover entire form area */
  display: flex; /* Center content */
  align-items: center; /* Vertically center text */
  justify-content: center; /* Horizontally center text */
  padding: 1rem; /* Inner padding */
  box-sizing: border-box; /* Include padding in size */
  background: var(
    --md-default-bg-color
  ); /* Solid background to cover elements */
  margin-top: 0; /* No top margin */
  z-index: 10; /* Ensure on top of other elements */
  font-size: 1rem; /* Adjust font size for visibility */
  color: var(--md-default-fg-color--light); /* Text color for readability */
}

/* Tab Layout */
.tabs {
  position: relative; /* Positioning context */
  margin: 0; /* No margins */
  background: var(--md-code-bg-color); /* Match background */
  border-radius: 0.1rem; /* Slight rounding */
  overflow: hidden; /* Clip content */
  display: flex; /* Use flexbox */
  flex-direction: column; /* Stack vertically */
  height: 100%; /* Fill parent height */
  min-height: 100px; /* Minimum height */
}

.tabs .tab-header {
  display: flex; /* Use flexbox */
  flex-direction: row; /* Horizontal layout */
  background: var(
    --md-default-bg-color--lighter
  ) !important; /* Match template-header background, override parent styles */
  border-bottom: 1px solid var(--md-default-fg-color--lightest); /* Match template-header border */
  position: sticky; /* Stick to top on scroll */
  top: 0; /* Align to top edge */
  z-index: 2; /* Ensure above tab content */
  flex-shrink: 0; /* Prevent shrinking */
}

.tabs input[type="radio"] {
  position: absolute; /* Position off-screen */
  opacity: 0; /* Hide visually */
}

.tabs label {
  flex: 0 0 auto; /* Fixed size, no shrink/grow */
  padding: 0.5rem 1rem; /* Inner padding */
  cursor: pointer; /* Indicate clickable */
  color: var(--md-default-fg-color--light); /* Light text color */
  border-bottom: 2px solid transparent; /* Initial border */
  transition: background 0.2s, color 0.2s; /* Smooth transitions */
}

.tabs label:hover {
  background: var(--md-default-bg-color--light); /* Hover background */
  color: var(--md-default-fg-color); /* Hover text color */
}

.tabs input:checked + label {
  background: var(--md-accent-fg-color); /* Selected background */
  color: var(--md-primary-bg-color); /* Selected text color */
  border-bottom: 2px solid var(--md-primary-fg-color); /* Selected border */
}

.tabs .tab {
  flex: 1; /* Grow to fill remaining space */
  display: none; /* Hidden by default */
  padding: 0; /* No padding */
  background: var(--md-code-bg-color); /* Match background */
  visibility: hidden; /* Hidden for accessibility */
  opacity: 0; /* Fully transparent when hidden */
  overflow: auto; /* Enable scrolling if content overflows */
  box-sizing: border-box; /* Include padding in size */
}

.tabs input:checked + .tab {
  display: block; /* Show when selected */
  visibility: visible; /* Visible for accessibility */
  opacity: 1; /* Fully opaque when selected */
}

/* Preview Output */
.tabs .tab .preview-output {
  font-size: 0.7rem; /* Match textarea text size */
  background-color: var(--md-code-bg-color); /* Match background */
  scrollbar-color: var(--md-default-fg-color--lighter) transparent; /* Custom scrollbar */
  scrollbar-width: thin; /* Thin scrollbar */
  touch-action: auto; /* Allow touch interactions */
  padding: 0.77em 1.18em; /* Inner padding */
  margin: 0; /* No margins */
  white-space: pre-wrap; /* Preserve whitespace and wrap */
  word-break: normal; /* Prevent word breaking */
  min-height: 100px; /* Minimum height */
  height: 100%; /* Fill tab height */
}

.tabs .tab .preview-output b {
  color: var(--md-code-hl-special-color); /* Highlight color for bold */
}

.tabs .tab .preview-output i {
  color: var(--md-code-hl-keyword-color); /* Highlight color for italic */
}

/* Error message styling */
.error {
  color: var(--md-code-hl-error-color); /* Error text color */
  font-size: 0.7rem; /* Match other text */
  padding: 0.77em 1.18em; /* Inner padding */
  background-color: var(--md-code-bg-color); /* Match background */
  border-radius: 0.1rem; /* Slight rounding */
}

/* Responsive Design */
@media screen and (max-width: 768px) {
  #tplprev {
    padding: 0 0.5rem; /* Reduced padding on small screens */
  }

  #tplprev .template-wrapper {
    flex-direction: column; /* Stack on small screens */
    column-gap: 0; /* No gap */
    row-gap: 1rem; /* Space between rows */
  }

  #tplprev textarea {
    min-height: 200px; /* Adjusted for small screens */
  }

  #tplprev .controls {
    flex-direction: column; /* Stack controls */
    align-items: stretch; /* Stretch items */
  }

  #tplprev fieldset {
    flex-direction: column; /* Stack fields */
    align-items: stretch; /* Stretch items */
  }

  .tabs .tab-header {
    flex-wrap: wrap; /* Wrap labels on small screens */
  }

  .tabs label {
    flex: 1 0 auto; /* Equal width, no shrink */
    text-align: center; /* Center text */
  }

  .tabs .tab .preview-output {
    min-height: 80px; /* Minimum height on small screens */
  }
}

/* Override for dark mode to make headers distinct */
/* [data-md-color-scheme="watchtower-dark"]
  .template-wrapper
  .template-header-container {
  background-color: hsl(var(--md-hue) 15% 25% / 100%) !important;
}

[data-md-color-scheme="watchtower-dark"] .tabs .tab-header {
  background-color: hsl(var(--md-hue) 15% 25% / 100%) !important;
} */