/**
 * WebDev-Tools Custom Styles
 * Optimized for minimal file size - Bootstrap handles most styling
 * 
 * @updated 1. Dezember 2025
 */

/* ============================================
   CUSTOM UTILITIES
   ============================================ */

/* ============================================
   CORE LAYOUT
   ============================================ */

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  font-weight: 400;
  font-size: 0.875rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html, body {
  height: 100%;
}

.app-wrapper {
  display: flex;
  flex-grow: 1;
  height: calc(100% - 57px); /* Minus mobile header height */
}

@media (min-width: 992px) {
  .app-wrapper {
    height: 100%;
  }
  
  .tool-container-inner {
    max-width: 1200px;
    margin: 0 auto;
  }
}

/* ============================================
   SIDEBAR & NAVIGATION
   ============================================ */

#desktop-sidebar {
  width: 280px;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 1000;
}

/* Make desktop sidebar responsive between 992px and 1479px */
@media (min-width: 992px) and (max-width: 1479px) {
  #desktop-sidebar {
    width: 240px;
  }
  
  .left-sidebar-spacer {
    width: 240px !important;
  }
}

.btn-toggle {
  padding: 0.5rem;
  font-weight: 500;
  color: var(--bs-body-color);
  background-color: transparent;
  width: 100%;
  text-align: left;
  transition: color 0.15s ease-in-out;
  text-decoration: none;
}

.btn-toggle:hover {
  color: var(--bs-body-color);
  background-color: var(--bs-secondary-bg);
  border-radius: var(--bs-border-radius);
  text-decoration: none;
}

.btn-toggle::before {
  width: 1.25em;
  line-height: 0;
  margin-right: 0.5rem;
  content: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='rgba%280,0,0,.5%29' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M5 14l6-6-6-6'/%3e%3c/svg%3e");
  transition: transform 0.35s ease;
  transform-origin: 0.5em 50%;
}

[data-bs-theme="dark"] .btn-toggle::before {
  content: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='rgba%28255,255,255,.87%29' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M5 14l6-6-6-6'/%3e%3c/svg%3e");
}

.btn-toggle[aria-expanded="true"]::before {
  transform: rotate(90deg);
}

.btn-toggle[data-tool="home"]::before {
  opacity: 0;
}

.btn-toggle[data-tool="about"]::before,
.btn-toggle[data-tool="imprint"]::before,
.btn-toggle[data-tool="privacy"]::before {
  display: none;
}

.btn-toggle.active {
  background-color: var(--bs-primary-bg-subtle);
  color: var(--bs-body-color);
  border-radius: 0.375rem;
}

.btn-toggle.active i {
  color: var(--bs-body-color);
}

.btn-toggle-nav a {
  margin-left: 2rem;
  color: var(--bs-secondary) !important;
  padding: 0.25rem 0.5rem;
  display: block;
  font-size: 0.875rem;
  border-radius: var(--bs-border-radius);
}

.btn-toggle-nav a:hover {
  background-color: var(--bs-secondary-bg);
  color: var(--bs-emphasis-color) !important;
}

.btn-toggle-nav a.active {
  background-color: var(--bs-primary-bg-subtle);
  color: var(--bs-body-color) !important;
  border-radius: 0.375rem;
}

/* Legal navigation links */
.tool-link {
  padding: 0.25rem 0.5rem;
  display: block;
  font-size: 0.875rem;
  transition: background-color 0.15s ease-in-out, color 0.15s ease-in-out;
  border-radius: var(--bs-border-radius);
}

.tool-link:hover {
  background-color: var(--bs-secondary-bg);
  color: var(--bs-emphasis-color) !important;
}

.tool-link.active {
  background-color: var(--bs-primary-bg-subtle);
  color: var(--bs-body-color) !important;
}

.tool-link[data-tool="about"],
.tool-link[data-tool="imprint"],
.tool-link[data-tool="privacy"],
.tool-link[title="GitHub Repository"] {
  font-size: 0.75rem;
}

/* Brand styling */
.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 500;
}

.navbar-brand img {
  width: 1.5rem;
  height: 1.5rem;
  display: inline-block;
  object-fit: contain;
}

[data-bs-theme="dark"] .navbar-brand img {
  filter: brightness(0) invert(1);
}

/* Fixed header heights */
header.d-lg-none nav {
  height: 57px;
  padding: 0 1rem !important;
}

#desktop-sidebar > div:first-child {
  height: 57px;
  display: flex;
  align-items: center;
  padding: 0 1rem !important;
}

@media (min-width: 992px) {
  #desktop-sidebar .navbar-brand {
    font-size: 1.25rem; /* 20px - Bootstrap navbar-brand standard */
  }
  
  #desktop-sidebar .navbar-brand img {
    width: 1.75rem;
    height: 1.75rem;
  }
}

/* OffCanvas navbar-brand font size */
#mobileSidebar .navbar-brand {
  font-size: 1.25rem; /* 20px - Bootstrap navbar-brand standard */
}

/* ============================================
   HOMEPAGE & TOOLS
   ============================================ */

.tool-card {
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.tool-card:hover {
  background-color: var(--bs-light);
  border-color: var(--bs-primary) !important;
}

.tool-card:focus-visible {
  background-color: var(--bs-light);
  border-color: var(--bs-primary) !important;
  outline: 2px solid var(--bs-primary);
  outline-offset: 2px;
}

[data-bs-theme="dark"] .tool-card:hover {
  background-color: var(--bs-dark);
  border-color: var(--bs-primary) !important;
}

[data-bs-theme="dark"] .tool-card:focus-visible {
  background-color: var(--bs-dark);
  border-color: var(--bs-primary) !important;
  outline: 2px solid var(--bs-primary);
  outline-offset: 2px;
}

/* Category filter animations - using Bootstrap utilities where possible */
.tool-item.fade-in {
  animation: fadeInScale 0.4s ease forwards;
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

/* Enhanced Button States for WCAG Compliance */
.btn:focus-visible,
button:focus-visible,
a.btn:focus-visible {
  outline: 2px solid var(--bs-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.btn:disabled,
button:disabled,
a.btn.disabled {
  opacity: 0.65;
  cursor: not-allowed;
  pointer-events: none;
}

.btn:active:not(:disabled),
button:active:not(:disabled) {
  transform: translateY(1px);
}

/* Tool cards hover/focus states */
.tool-card:hover {
  transform: translateY(-2px);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tool-card:focus-within {
  outline: 2px solid var(--bs-primary);
  outline-offset: 2px;
}

/* Skip to main content link */
.visually-hidden-focusable:focus {
  position: static !important;
  width: auto !important;
  height: auto !important;
  padding: 0.5rem 1rem !important;
  margin: 0.5rem !important;
  overflow: visible !important;
  clip: auto !important;
  white-space: normal !important;
  background-color: var(--bs-primary) !important;
  color: white !important;
  text-decoration: none !important;
  border-radius: 0.25rem !important;
  z-index: 9999 !important;
}

/* ============================================
   THEME SWITCHER
   ============================================ */

/* ============================================
   THEME SWITCHER
   ============================================ */

.bd-mode-toggle {
  z-index: 1500;
}

.bd-mode-toggle .btn-primary svg {
  fill: currentColor;
  color: white;
}

.bd-mode-toggle .dropdown-item svg {
  fill: currentColor;
}

.bd-mode-toggle .dropdown-item.active svg,
.bd-mode-toggle .dropdown-item:active svg {
  fill: currentColor;
  color: white;
}

/* ============================================
   LANGUAGE SWITCHER
   ============================================ */

.bd-language-toggle {
  z-index: 1499;
  bottom: 0;
  margin-bottom: 7rem;
}

.bd-language-toggle .btn-primary svg {
  fill: currentColor;
  color: white;
}

.bd-language-toggle .dropdown-item svg {
  fill: currentColor;
}

  .bd-language-toggle .dropdown-item.active svg,
  .bd-language-toggle .dropdown-item:active svg {
    fill: currentColor;
    color: white;
  }

  /* ============================================
     TOOL-SPECIFIC MINIMAL STYLES
     ============================================ *//* Layout Toggle Button (used in tools with 2-column layouts) */
.btn-layout-toggle {
  width: 2.5rem;
  height: 2.5rem;
  z-index: 1030;
  border-radius: 50% !important; /* Force round shape everywhere */
}

/* Layout Toggle Button - Stacked Position (top-right) */
.btn-layout-toggle-stacked {
  top: 1.125rem !important;
  right: -1.5rem !important;
}

/* Scrollable Pre-formatted Text Container */
.pre-scrollable {
  max-height: 400px;
  overflow-y: auto;
}

/* JSON Formatter - Drag & Drop Area */
.drag-drop-area {
  border: 2px dashed var(--bs-border-color);
  border-radius: 0.375rem;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
}

.drag-drop-area:hover,
.drag-drop-area.drag-over {
  border-color: var(--bs-primary);
  background-color: var(--bs-primary-bg-subtle);
}

/* Image Preview Box */
.image-preview-box {
  max-height: 400px;
}

/* Password Strength Progress Bar */
.progress-strength-bar {
  height: 12px;
}

/* JSON Tree View */
.json-tree-container {
  max-height: 400px;
  overflow-y: auto;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.375rem;
  padding: 1rem;
}

.json-tree-item {
  margin-left: 1.5rem;
  margin-top: 0.25rem;
}

.json-tree-key {
  color: var(--bs-blue);
  font-weight: 600;
}

.json-tree-string { color: var(--bs-green); }
.json-tree-number { color: var(--bs-orange); }
.json-tree-boolean { color: var(--bs-purple); }
.json-tree-null { 
  color: var(--bs-secondary);
  font-style: italic;
}

.json-tree-toggle {
  cursor: pointer;
  user-select: none;
  display: inline-block;
  width: 1rem;
  text-align: center;
}

.json-tree-toggle:hover {
  color: var(--bs-primary);
}

/* Character Reference Tool */
#charTable thead th {
  position: sticky;
  top: 0;
  background-color: var(--bs-light);
  z-index: 10;
  box-shadow: 0 2px 2px -1px rgba(0, 0, 0, 0.1);
}

[data-bs-theme="dark"] #charTable thead th {
  background-color: var(--bs-dark);
  color: var(--bs-light);
}

#charTable code {
  font-size: 0.875rem;
  padding: 0.2rem 0.4rem;
  background-color: rgba(0, 0, 0, 0.05);
  border-radius: 0.25rem;
}

[data-bs-theme="dark"] #charTable code {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Character table column widths */
.char-col-char { width: 80px; }
.char-col-name { width: 25%; }
.char-col-entity { width: 15%; }
.char-col-unicode { width: 12%; }
.char-col-decimal { width: 12%; }
.char-col-copy { width: 200px; }

/* QR Code Generator Preview */
.qr-preview-area {
  min-height: 256px;
  background: var(--bs-light);
  border-radius: 0.375rem;
}

[data-bs-theme="dark"] .qr-preview-area {
  background: var(--bs-dark);
}

/* URL Encoder - Parse Output Table */
#parseOutput .table th {
  width: 150px;
  font-weight: 600;
}

#parseOutput code {
  word-break: break-all;
}

/* Copy Button Styling */
.copy-btn {
  text-decoration: none;
  color: var(--bs-secondary);
  font-size: 0.875rem;
}

.copy-btn:hover {
  color: var(--bs-primary);
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

/* Table of Contents Sidebar */
#toc-sidebar {
  scrollbar-width: thin;
  scrollbar-color: var(--bs-border-color) transparent;
}

#toc-sidebar::-webkit-scrollbar {
  width: 6px;
}

#toc-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

#toc-sidebar::-webkit-scrollbar-thumb {
  background-color: var(--bs-border-color);
  border-radius: 3px;
}

#toc-sidebar::-webkit-scrollbar-thumb:hover {
  background-color: var(--bs-secondary);
}

/* TOC Sidebar Container - Fixed position */
.toc-sidebar-fixed {
  width: 280px;
  position: fixed !important;
  top: 0;
  right: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 1001;
}

/* TOC Sidebar Spacer */
.toc-sidebar-spacer {
  width: 280px;
  flex-shrink: 0;
}

/* Responsive TOC sidebar widths */
@media (min-width: 1480px) and (max-width: 1679px) {
  .toc-sidebar-fixed {
    width: 240px;
  }
  
  .toc-sidebar-spacer {
    width: 240px;
  }
}

/* Hide TOC sidebar below 1480px */
@media (max-width: 1479px) {
  .toc-sidebar-fixed,
  .toc-sidebar-spacer {
    display: none !important;
  }
}

/* Ensure TOC nav is sticky within the fixed sidebar */
#toc-nav {
  position: sticky !important;
  top: 1rem;
}

/* TOC Heading styling */
.toc-heading {
  letter-spacing: 0.5px;
}

/* Left Sidebar Spacer */
.left-sidebar-spacer {
  width: 280px;
  flex-shrink: 0;
}

/* Hide left sidebar spacer below 992px (when desktop sidebar is hidden) */
@media (max-width: 991px) {
  .left-sidebar-spacer {
    display: none !important;
  }
}

/* Vertical nav styling inspired by Bootstrap Docs */
#toc-nav .nav-link {
  display: block;
  padding: 0.25rem 0;
  padding-left: 0.5rem;
  margin-top: 0.125rem;
  margin-left: 0;
  color: var(--bs-body-color);
  text-decoration: none;
  border-left: 2px solid transparent;
  font-size: 0.875rem;
  transition: border-color 0.15s ease-in-out, color 0.15s ease-in-out;
}

#toc-nav .nav-link:hover {
  border-left-color: var(--bs-border-color);
  color: var(--bs-primary);
}

#toc-nav .nav-link.active {
  border-left-color: var(--bs-primary);
  color: var(--bs-primary);
  font-weight: 600;
}

#toc-nav .nav-link:focus-visible {
  border-left-color: var(--bs-primary);
  color: var(--bs-primary);
  outline: 2px solid var(--bs-primary);
  outline-offset: 2px;
}

/* Tool link (first item) should not highlight */
#toc-nav .toc-tool-link {
  font-size: 0.9375rem;
  color: var(--bs-body-color);
  opacity: 0.8;
}

#toc-nav .toc-tool-link.active {
  border-left-color: transparent !important;
  color: var(--bs-body-color) !important;
  font-weight: normal !important;
}

#toc-nav .toc-tool-link:hover {
  opacity: 1;
  color: var(--bs-primary);
}

@media (max-width: 768px) {
  #charTable .btn-group-sm .btn {
    padding: 0.15rem 0.3rem;
    font-size: 0.75rem;
  }
}

/* ============================================
   TOOL-SPECIFIC UTILITIES
   ============================================ */

/* Aspect Ratio Calculator - Preset Buttons */
.ratio-preset.active small,
.ratio-preset:hover small {
  color: #fff !important;
}

/* Regex Tester specific styles */
.results-container {
  max-height: 400px;
  overflow-y: auto;
}

.pre-wrap {
  white-space: pre-wrap;
  word-wrap: break-word;
}

.col-width-150 {
  width: 150px;
}

/* Error page utilities */
.error-icon-large {
  font-size: 8rem;
}

.min-vh-75 {
  min-height: 70vh;
}

.error-container-min-height {
  min-height: 60vh;
}

/* ============================================
   IMAGES & MEDIA - CORE WEB VITALS
   ============================================ */

/* Aspect ratio for images to prevent CLS (Cumulative Layout Shift) */
.tool-card img,
.og-image,
.icon-preview {
  aspect-ratio: attr(width) / attr(height);
  width: 100%;
  height: auto;
}

/* Specific aspect ratios for common image types */
.tool-icon {
  aspect-ratio: 1 / 1;
}

.og-preview {
  aspect-ratio: 1200 / 630;
}

.avatar-image {
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* Fallback for browsers without aspect-ratio support */
@supports not (aspect-ratio: 1 / 1) {
  .tool-icon::before {
    content: '';
    display: block;
    padding-top: 100%;
  }
}