/**
 * ShowMyIP Components CSS
 * Consolidated component styles from legacy style.css, global-styles.css, and layout.css
 * Version: 1.0.0
 * Last Updated: January 2026
 */

/* ============================================
   CSS RESET (Modern, minimal)
   ============================================ */

*, *::before, *::after {
  box-sizing: border-box;
}

html, body, div, span, h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, address, cite, code, del, dfn, em, img, ins, kbd, q, s, samp,
small, strong, sub, sup, var, b, u, i, dl, dt, dd, ol, ul, li,
fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, figure, figcaption, footer, header,
menu, nav, output, section, summary, time, mark, audio, video, input, textarea, select {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  vertical-align: baseline;
}

article, aside, details, figcaption, figure, footer, header,
menu, nav, section, main {
  display: block;
}

ol, ul {
  list-style: none;
}

blockquote, q {
  quotes: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* Clearfix */
.clearfix::after {
  content: "";
  display: table;
  clear: both;
}

/* ============================================
   BASE ELEMENT STYLES
   ============================================ */

html {
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Selection styling */
::selection {
  background: var(--color-primary);
  color: #fff;
  text-shadow: none;
}

::-moz-selection {
  background: var(--color-primary);
  color: #fff;
  text-shadow: none;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-base);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--space-md);
}

/* Restore list styles for content areas */
article ul, article ol,
.content-section ul, .content-section ol,
main ul:not(.footer-links):not(.breadcrumb):not([class*="nav"]):not([class*="tool"]),
main ol {
  list-style-position: inside;
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

article ul, .content-section ul,
main ul:not(.footer-links):not(.breadcrumb):not([class*="nav"]):not([class*="tool"]) {
  list-style-type: disc;
}

article ol, .content-section ol, main ol {
  list-style-type: decimal;
}

article li, .content-section li, main li {
  margin-bottom: var(--space-xs);
}

small {
  font-size: var(--font-size-sm);
}

strong, b {
  font-weight: var(--font-weight-bold);
}

em, i {
  font-style: italic;
}

/* ============================================
   LINKS
   ============================================ */

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

a:visited {
  color: var(--color-link-visited);
}

a:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}

/* ============================================
   IMAGES
   ============================================ */

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

/* Lazy loading for images */
.lazy-image {
  opacity: 0;
  transition: opacity var(--transition-base);
}

.lazy-image.loaded {
  opacity: 1;
}

/* ============================================
   HORIZONTAL RULE
   ============================================ */

hr {
  border: none;
  border-top: 1px solid var(--color-gray-300);
  margin: var(--space-lg) 0;
}

/* ============================================
   BLOCKQUOTE
   ============================================ */

blockquote {
  background-color: var(--color-gray-50);
  border-left: 4px solid var(--color-primary);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-lg) 0;
  font-style: italic;
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* ============================================
   CODE & PREFORMATTED TEXT
   ============================================ */

code, kbd, pre, samp {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
}

code {
  background-color: var(--color-gray-100);
  padding: 0.125em 0.25em;
  border-radius: var(--radius-sm);
  color: var(--color-danger-text); /* WCAG 1.4.3: 6.00:1 on gray-100 (was 3.63:1) */
}

pre {
  background-color: var(--color-gray-900);
  color: var(--color-gray-100);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: var(--space-lg);
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* ============================================
   CONTAINER
   ============================================ */

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

@media (min-width: 992px) {
  .container {
    max-width: 940px;
  }
}

@media (min-width: 1200px) {
  .container {
    max-width: 1140px;
  }
}

/* ============================================
   BUTTONS
   ============================================ */

.btn,
button,
input[type="submit"],
input[type="reset"],
input[type="button"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: color var(--transition-fast),
              background-color var(--transition-fast),
              border-color var(--transition-fast),
              box-shadow var(--transition-fast);
  min-height: var(--touch-target-min);
}

.btn:focus-visible,
button:focus-visible,
input[type="submit"]:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}

/* Primary Button */
.btn-primary,
input[type="submit"] {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.btn-primary:hover,
input[type="submit"]:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
}

/* Secondary Button */
.btn-secondary {
  background-color: var(--color-gray-600);
  border-color: var(--color-gray-600);
  color: #fff;
}

.btn-secondary:hover {
  background-color: var(--color-gray-700);
  border-color: var(--color-gray-700);
  color: #fff;
  text-decoration: none;
}

/* Outline Buttons */
.btn-outline-primary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline-primary:hover {
  background-color: var(--color-primary);
  color: #fff;
  text-decoration: none;
}

.btn-outline-secondary {
  background-color: transparent;
  border-color: var(--color-gray-600);
  color: var(--color-gray-600);
}

.btn-outline-secondary:hover {
  background-color: var(--color-gray-600);
  color: #fff;
  text-decoration: none;
}

/* Success Button */
.btn-success {
  background-color: var(--color-success);
  border-color: var(--color-success);
  color: #fff;
}

.btn-success:hover {
  background-color: var(--color-success-dark);
  border-color: var(--color-success-dark);
  color: #fff;
}

/* Danger Button */
.btn-danger {
  background-color: var(--color-danger);
  border-color: var(--color-danger);
  color: #fff;
}

.btn-danger:hover {
  background-color: var(--color-danger-dark);
  border-color: var(--color-danger-dark);
  color: #fff;
}

/* Warning Button */
.btn-warning {
  background-color: var(--color-warning);
  border-color: var(--color-warning);
  color: var(--color-gray-900);
}

.btn-warning:hover {
  background-color: var(--color-warning-dark);
  border-color: var(--color-warning-dark);
  color: var(--color-gray-900);
}

/* Info Button */
.btn-info {
  background-color: var(--color-info);
  border-color: var(--color-info);
  color: #fff;
}

.btn-info:hover {
  background-color: var(--color-info-dark);
  border-color: var(--color-info-dark);
  color: #fff;
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-sm);
  min-height: 32px;
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-lg);
}

.btn-block {
  display: block;
  width: 100%;
}

/* Button Group */
.button-group,
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  margin-bottom: var(--space-md);
}

/* Disabled state */
.btn:disabled,
.btn.disabled,
button:disabled,
input[type="submit"]:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  pointer-events: none;
}

/* ============================================
   FORM ELEMENTS
   ============================================ */

/* Form Control */
.form-control,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="url"],
input[type="tel"],
input[type="search"],
input[type="date"],
textarea,
select {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.5;
  color: var(--color-text-primary);
  background-color: var(--color-bg-page);
  background-clip: padding-box;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
}

.form-control:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="url"]:focus,
input[type="tel"]:focus,
input[type="search"]:focus,
input[type="date"]:focus,
textarea:focus,
select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.2rem var(--color-primary-alpha);
  outline: none;
}

.form-control::placeholder {
  color: var(--color-text-muted);
  opacity: 1;
}

.form-control:disabled,
.form-control[readonly] {
  background-color: var(--color-gray-100);
  opacity: 0.7;
  cursor: not-allowed;
}

/* Select with arrow */
select.form-control,
select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  background-size: 16px 12px;
  padding-right: calc(var(--space-md) * 2.5);
}

/* Textarea */
textarea.form-control,
textarea {
  min-height: 120px;
  resize: vertical;
}

/* Form Label */
.form-label,
label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

/* Form Group */
.form-group {
  margin-bottom: var(--space-md);
}

/* Form Text (helper text) */
.form-text {
  display: block;
  margin-top: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Input Group */
.input-group {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  width: 100%;
}

.input-group > .form-control {
  position: relative;
  flex: 1 1 auto;
  width: 1%;
  min-width: 0;
  margin-bottom: 0;
}

.input-group > .form-control:not(:last-child) {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.input-group > .form-control:not(:first-child) {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  margin-left: -1px;
}

.input-group > .btn:not(:first-child) {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  margin-left: -1px;
}

.input-group > .btn:not(:last-child) {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.input-group-append,
.input-group-prepend {
  display: flex;
}

/* Checkboxes and Radios */
.form-check {
  display: block;
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: var(--space-sm);
}

.form-check-input {
  position: absolute;
  margin-left: -1.5rem;
  margin-top: 0.25rem;
  width: 1rem;
  height: 1rem;
}

.form-check-label {
  margin-bottom: 0;
  cursor: pointer;
  font-weight: var(--font-weight-normal);
}

/* Validation States */
.is-valid,
.form-control.is-valid {
  border-color: var(--color-success);
}

.is-invalid,
.form-control.is-invalid,
.form-control[aria-invalid="true"] {
  border-color: var(--color-danger);
}

.valid-feedback {
  display: none;
  width: 100%;
  margin-top: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-success-text); /* WCAG 1.4.3: 5.13:1 on white (was 2.48:1) */
}

.invalid-feedback,
.error-message {
  display: none;
  width: 100%;
  margin-top: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-danger-text); /* WCAG 1.4.3: 6.54:1 on white (was 3.96:1) */
}

.is-valid ~ .valid-feedback,
.is-invalid ~ .invalid-feedback,
.is-invalid ~ .error-message {
  display: block;
}

/* ============================================
   TABLES
   ============================================ */

table {
  width: 100%;
  margin-bottom: var(--space-lg);
  border-collapse: collapse;
}

th, td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--color-gray-300);
}

th {
  font-weight: var(--font-weight-semibold);
  background-color: var(--color-gray-50);
  color: var(--color-text-primary);
}

.table-bordered {
  border: 1px solid var(--color-gray-300);
}

.table-bordered th,
.table-bordered td {
  border: 1px solid var(--color-gray-300);
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: var(--color-gray-50);
}

.table-hover tbody tr:hover {
  background-color: var(--color-gray-100);
}

/* Responsive table wrapper */
.table-responsive {
  display: block;
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* Data explainer table */
.data-explainer-table {
  width: 100%;
  margin-top: var(--space-sm);
  margin-bottom: var(--space-md);
}

.data-explainer-table th,
.data-explainer-table td {
  border: 1px solid var(--color-gray-300);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.95em;
}

.data-explainer-table th {
  background-color: var(--color-gray-100);
  font-weight: var(--font-weight-semibold);
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
  position: relative;
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-lg);
  border: 1px solid transparent;
  border-radius: var(--radius);
}

.alert-success {
  color: #155724;
  background-color: #d4edda;
  border-color: #c3e6cb;
}

.alert-danger,
.alert-error {
  color: #721c24;
  background-color: #f8d7da;
  border-color: #f5c6cb;
}

.alert-warning {
  color: #856404;
  background-color: #fff3cd;
  border-color: #ffeeba;
}

.alert-info {
  color: #004085;
  background-color: #cce5ff;
  border-color: #b8daff;
}

/* Dark-mode overrides for alert semantic boxes (hardcoded tinted colors must
   invert together; background+border+text updated as a unit for WCAG AA). */
html[data-theme="dark"] .alert-success {
  color: #6fd17a;
  background-color: #0d2b10;
  border-color: #2a6b2e;
}

html[data-theme="dark"] .alert-danger,
html[data-theme="dark"] .alert-error {
  color: #ff8a82;
  background-color: #2b0a0a;
  border-color: #6b1a1a;
}

html[data-theme="dark"] .alert-warning {
  color: #f5c451;
  background-color: #2b2000;
  border-color: #6b4e00;
}

html[data-theme="dark"] .alert-info {
  color: #5ec8e8;
  background-color: #06202b;
  border-color: #0e4d6b;
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .alert-success {
    color: #6fd17a;
    background-color: #0d2b10;
    border-color: #2a6b2e;
  }

  html:not([data-theme="light"]) .alert-danger,
  html:not([data-theme="light"]) .alert-error {
    color: #ff8a82;
    background-color: #2b0a0a;
    border-color: #6b1a1a;
  }

  html:not([data-theme="light"]) .alert-warning {
    color: #f5c451;
    background-color: #2b2000;
    border-color: #6b4e00;
  }

  html:not([data-theme="light"]) .alert-info {
    color: #5ec8e8;
    background-color: #06202b;
    border-color: #0e4d6b;
  }
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background: var(--color-bg-page);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-lg);
}

.card-header {
  padding: var(--space-md) var(--space-lg);
  background: var(--color-gray-50);
  border-bottom: 1px solid var(--color-gray-300);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.card-body {
  padding: var(--space-lg);
}

.card-footer {
  padding: var(--space-md) var(--space-lg);
  background: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-300);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* Content Section (card-like) */
.content-section {
  background-color: var(--color-bg-page);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.content-section h2 {
  margin-top: 0;
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: var(--space-sm);
  display: inline-block;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

header[role="banner"] {
  background-color: var(--color-bg-page);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: var(--z-fixed);
  padding: var(--space-sm) 0;
  width: 100%;
}

.header-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  position: relative;
  flex-wrap: nowrap;
}

/* Logo */
#logo {
  font-size: 1.9rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

#logo:hover {
  color: var(--color-primary-dark);
  text-decoration: none;
}

#logo img {
  max-height: 50px;
  width: auto;
  vertical-align: middle;
}

/* Main Navigation */
nav#mainNav {
  flex-grow: 1;
  display: flex;
  justify-content: center;
  margin: 0 var(--space-md);
}

nav#mainNav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-xs) var(--space-sm);
  max-width: 960px;
}

nav#mainNav ul li {
  list-style-type: none;
  margin: 0;
}

nav#mainNav ul li a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-base);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  text-align: center;
}

nav#mainNav ul li a:hover,
nav#mainNav ul li a:focus {
  background-color: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
}

nav#mainNav ul li a.active-main-link {
  background-color: var(--color-primary);
  color: #fff;
  font-weight: var(--font-weight-semibold);
}

/* Dropdown Navigation */
.has-dropdown {
  position: relative;
}

.has-dropdown > a::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: var(--space-sm);
  vertical-align: middle;
  border-top: 4px solid currentColor;
  border-right: 4px solid transparent;
  border-left: 4px solid transparent;
  transition: transform var(--transition-fast);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: var(--z-dropdown);
  visibility: hidden;
  opacity: 0;
  min-width: 220px;
  background-color: var(--color-bg-page);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  overflow: hidden;
}

.dropdown-menu ul {
  display: flex;
  flex-direction: column;
  width: 100%;
  margin: 0;
  padding: 0;
}

.dropdown-menu li {
  margin: 0;
  width: 100%;
  border-bottom: 1px solid var(--color-gray-200);
}

.dropdown-menu li:last-child {
  border-bottom: none;
}

.dropdown-menu a {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  text-decoration: none;
  text-align: left;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.dropdown-menu a:hover {
  background-color: var(--color-primary-alpha);
  color: var(--color-primary);
}

/* Desktop dropdown hover */
@media (min-width: 1025px) {
  .has-dropdown:hover .dropdown-menu {
    visibility: visible;
    opacity: 1;
  }

  .has-dropdown:hover > a::after {
    transform: rotate(-180deg);
  }

  .has-dropdown:hover > a {
    color: var(--color-primary);
  }
}

/* Hamburger Menu */
.hamburger-menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: calc(var(--z-fixed) + 1);
}

.hamburger-bar {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px auto;
  background-color: var(--color-text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.hamburger-menu.active .hamburger-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger-menu.active .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.hamburger-menu.active .hamburger-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Navigation */
@media (max-width: 1024px) {
  .hamburger-menu {
    display: flex;
    cursor: pointer;
    padding: var(--space-sm);
    margin-left: auto;
  }

  nav#mainNav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--color-bg-page);
    display: none;
    z-index: var(--z-fixed);
    box-shadow: var(--shadow-lg);
    max-height: 80vh;
    overflow-y: auto;
    margin: 0;
  }

  nav#mainNav.active {
    display: block;
  }

  nav#mainNav ul {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-md) 0;
    margin: 0;
    width: 100%;
  }

  nav#mainNav ul li {
    width: 100%;
    margin: 0;
  }

  nav#mainNav ul li a {
    padding: var(--space-sm) var(--space-md);
    width: 100%;
    display: block;
    border-radius: 0;
    text-align: left;
    border-bottom: 1px solid var(--color-gray-100);
  }

  nav#mainNav ul li a:hover {
    background-color: var(--color-gray-50);
    color: var(--color-primary);
  }

  .dropdown-menu {
    position: static;
    visibility: visible;
    opacity: 1;
    display: none;
    width: 100%;
    box-shadow: none;
    border: none;
    background: var(--color-gray-50);
    border-radius: 0;
    margin-top: 0;
    padding-left: var(--space-md);
  }

  .dropdown-active > .dropdown-menu {
    display: block;
  }

  .dropdown-active > a::after {
    transform: rotate(-180deg);
  }

  #logo img {
    max-height: 40px;
  }
}

@media (max-width: 576px) {
  #logo img {
    max-height: 30px;
  }

  nav#mainNav ul li a {
    font-size: var(--font-size-sm);
    padding: var(--space-sm) var(--space-md);
  }
}

/* ============================================
   FOOTER STYLES
   ============================================ */

/* Tool Navigation Section (before footer) */
.navigation {
  background-color: var(--color-bg-subtle);
  padding: var(--space-xl) 0;
  color: var(--color-text-primary);
}

.tool-group-title {
  font-size: var(--font-size-2xl);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: var(--space-sm);
  display: inline-block;
}

.tool-group {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.tool-item {
  background-color: var(--color-bg-page);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-300);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.tool-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.tool-link {
  display: flex;
  align-items: center;
  padding: var(--space-sm);
  color: var(--color-text-primary);
  text-decoration: none;
  gap: var(--space-sm);
}

.tool-link:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.tool-icon {
  font-size: 1.5rem;
  color: var(--color-primary);
  width: 30px;
  text-align: center;
  flex-shrink: 0;
}

.tool-item:hover .tool-icon {
  color: var(--color-primary);
}

.tool-text {
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

/* Tool Card (alternate styling) */
.tool-card {
  background-color: var(--color-bg-subtle);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-300);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  text-decoration: none;
  color: var(--color-primary);
}

.tool-card i {
  font-size: 1.5rem;
  color: var(--color-primary);
  width: 30px;
  text-align: center;
}

.tool-card:hover i {
  color: var(--color-primary);
}

.tool-card span {
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

/* Tools Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-lg);
}

/* Main Footer */
#footer {
  background-color: var(--color-gray-800);
  color: var(--color-gray-200);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-xl);
}

.footer-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.footer-content p {
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
}

/* Footer Bottom */
#footer-bottom {
  background-color: var(--color-gray-900);
  color: var(--color-gray-200);
  padding: var(--space-lg) 0;
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom-content p {
  margin-bottom: 0;
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
}

.footer-links {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
  gap: var(--space-lg);
}

.footer-links li {
  margin: 0;
}

.footer-links a {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-gray-100);
  text-decoration: underline;
}

/* ============================================
   LOADING & PROGRESS
   ============================================ */

.loading-indicator {
  text-align: center;
  padding: var(--space-xl);
  color: var(--color-text-secondary);
}

.spinner {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  vertical-align: text-bottom;
  border: 0.25em solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spinner 0.75s linear infinite;
}

@keyframes spinner {
  to {
    transform: rotate(360deg);
  }
}

.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--color-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: var(--space-md);
}

.progress-bar .progress {
  height: 100%;
  background: var(--color-primary);
  animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
  0% { width: 0; }
  50% { width: 70%; }
  100% { width: 100%; }
}

/* ============================================
   BREADCRUMBS
   ============================================ */

.breadcrumb-nav {
  margin-bottom: var(--space-lg);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  padding: var(--space-sm) 0;
  margin-bottom: 0;
  list-style: none;
  font-size: var(--font-size-sm);
}

.breadcrumb li {
  display: flex;
  align-items: center;
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin: 0 var(--space-sm);
  color: var(--color-gray-500);
}

.breadcrumb a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.breadcrumb .active {
  color: var(--color-text-secondary);
}

/* ============================================
   TABS
   ============================================ */

.form-tabs {
  display: flex;
  border-bottom: 1px solid var(--color-gray-300);
  margin-bottom: var(--space-md);
}

.tab-btn {
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  background-color: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

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

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.tab-content {
  display: none;
  padding-top: var(--space-sm);
}

.tab-content.active {
  display: block;
}

/* ============================================
   COLLAPSIBLE SECTIONS (Always Open)
   ============================================ */

.collapsible-section {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-lg);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-page);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.collapsible-section .collapsible-header,
.collapsible-trigger {
  font-size: 1.1em;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-md);
  padding: 0;
  background-color: transparent;
  border: none;
  text-align: left;
  width: 100%;
  color: var(--color-text-primary);
  cursor: default;
  pointer-events: none;
  display: block;
}

/* Ensure collapsible content is always visible */
.collapsible-content,
.collapsible-section .collapsible-content,
details[open] summary ~ *,
details summary ~ * {
  display: block !important;
  opacity: 1 !important;
  height: auto !important;
  overflow: visible !important;
  visibility: visible !important;
}

/* Hide toggle indicators. The triggers are neutralized into static headings
 * above, so no toggle affordance may remain: some pages mark the chevron with
 * .toggle-icon, others emit a bare <i class="fas fa-chevron-down"> as a direct
 * button child (ssl-certificate-checker, email-header-analyzer) — that one
 * escaped this rule and rendered as a stray floating arrow glyph. The
 * decorative fa-arrow-right inside the h3 at full heading size reads as
 * broken too; these are bordered cards already, so drop both icons. */
.collapsible-section .collapsible-header .collapse-arrow,
.collapsible-trigger .toggle-icon,
.collapsible-trigger > i,
.collapsible-trigger h3 > i,
details > summary::marker,
details > summary::-webkit-details-marker {
  display: none !important;
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */

@media (max-width: 768px) {
  .container {
    width: 95%;
    padding: 0 var(--space-sm);
  }

  .footer-bottom-content {
    flex-direction: column;
    gap: var(--space-md);
  }

  .footer-links {
    flex-direction: column;
    gap: var(--space-sm);
    align-items: center;
  }

  .tool-group {
    grid-template-columns: repeat(2, 1fr);
  }

  .tool-link {
    padding: var(--space-sm);
  }

  .tool-icon {
    font-size: 1.3rem;
  }

  .tool-text {
    font-size: var(--font-size-sm);
  }
}

@media (max-width: 576px) {
  .tools-grid,
  .tool-group {
    grid-template-columns: 1fr;
  }

  .content-section {
    padding: var(--space-md);
  }

  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }
}

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

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.sr-only-focusable:focus,
.sr-only-focusable:active {
  position: static;
  width: auto;
  height: auto;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Focus Visible Enhancement */
*:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}

/* Remove focus outline for mouse users */
*:focus:not(:focus-visible) {
  outline: none;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  .btn {
    border-width: 2px;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  .no-print,
  header,
  nav,
  .hamburger-menu,
  .navigation,
  #footer,
  #footer-bottom {
    display: none !important;
  }

  .print-only {
    display: block !important;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
    color: #000;
    background: #fff;
  }

  a[href]::after {
    content: " (" attr(href) ")";
  }

  .container {
    max-width: 100%;
    width: 100%;
  }
}