/* ==========================================================================
   Whitehall Bootstrap 5 Theme
   Inspired by the Whitehall Design System.
   Include AFTER bootstrap.min.css.
   ========================================================================== */

:root {
  /* Color Palette */
  --bs-body-bg: #f3f2f1;
  --bs-body-color: #0b0c0c;
  --bs-tertiary-bg: #ffffff;
  --bs-secondary-color: #505a5f;
  --bs-border-color: #b1b4b6;

  --bs-primary: #1d70b8;
  --bs-secondary: #505a5f;
  --bs-success: #00703c;
  --bs-info: #003078;
  --bs-warning: #fd0;
  --bs-danger: #d4351c;
  --bs-light: #f3f2f1;
  --bs-dark: #0b0c0c;

  /* Whitehall specific additions (for shadows, hovers, etc.) */
  --bs-whitehall-btn-shadow: #002d18;
  --bs-whitehall-btn-hover: #005a30;
  --bs-whitehall-btn-secondary-shadow: #505a5f;
  --bs-whitehall-btn-secondary-hover: #dbdad9;
  --bs-whitehall-link-hover: #003078;
  --bs-whitehall-surface-dark: #1d1d1b;

  /* Typography */
  --bs-font-sans-serif: "GDS Transport", Arial, sans-serif;
  --bs-body-font-size: 1rem; /* 16px */
  --bs-body-line-height: 1.5;

  /* Global Sharp Corners */
  --bs-border-radius: 0;
  --bs-border-radius-sm: 0;
  --bs-border-radius-lg: 0;
  --bs-border-radius-xl: 0;
  --bs-border-radius-2xl: 0;
  --bs-border-radius-pill: 0;

  /* Focus Ring */
  --bs-focus-ring-width: 3px;
  --bs-focus-ring-color: #fd0;
}

/* --------------------------------------------------------------------------
   1. Base & Typography
   -------------------------------------------------------------------------- */
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-weight: 700;
  color: var(--bs-body-color);
}

a {
  color: var(--bs-primary);
  text-decoration: underline;
  text-underline-offset: 0.125em;
}

a:hover {
  color: var(--bs-whitehall-link-hover);
  text-decoration-thickness: 3px;
}

/* --------------------------------------------------------------------------
   2. Focus Styles (Iconic Whitehall style)
   -------------------------------------------------------------------------- */
/* Refined focus to avoid breaking non-interactive elements */
:focus {
  outline: 3px solid var(--bs-warning) !important;
  outline-offset: 0 !important;
  box-shadow: inset 0 0 0 2px var(--bs-dark) !important;
}

/* Only change background on specific interactive elements where it is standard for Whitehall */
a:focus,
button:focus,
.btn:focus,
.dropdown-item:focus,
.nav-link:focus {
  background-color: var(--bs-warning) !important;
  color: var(--bs-dark) !important;
  box-shadow: inset 0 0 0 2px var(--bs-dark) !important;
}

/* For form controls, keep background readable */
.form-control:focus,
.form-select:focus,
.form-check-input:focus {
  background-color: var(--bs-body-bg) !important;
  color: var(--bs-body-color) !important;
  box-shadow: 0 0 0 2px var(--bs-dark), 0 0 0 5px var(--bs-warning) !important;
  outline: none !important;
}

/* --------------------------------------------------------------------------
   3. Buttons
   -------------------------------------------------------------------------- */
.btn {
  border-radius: 0;
  border-width: 2px;
  font-weight: 700;
  padding: 0.5rem 1rem;
  box-shadow: 0 2px 0 var(--bs-whitehall-btn-shadow);
}

.btn-primary {
  background-color: var(--bs-success); /* Whitehall primary is green */
  border-color: var(--bs-success);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--bs-whitehall-btn-hover);
  border-color: var(--bs-whitehall-btn-hover);
}

.btn-secondary {
  background-color: var(--bs-light);
  border-color: var(--bs-border-color);
  color: var(--bs-body-color);
  box-shadow: 0 2px 0 var(--bs-whitehall-btn-secondary-shadow);
}

.btn-secondary:hover {
  background-color: var(--bs-whitehall-btn-secondary-hover);
}

/* --------------------------------------------------------------------------
   4. Forms
   -------------------------------------------------------------------------- */
.form-control,
.form-select {
  border: 2px solid var(--bs-body-color);
  border-radius: 0;
}

.form-label {
  font-weight: 700;
}

/* Error state: red left border on inputs and form groups */
.is-invalid,
.was-validated .form-control:invalid,
.was-validated .form-select:invalid {
  border-left: 4px solid var(--bs-danger) !important;
}

/* Whitehall-style form group error marker using :has() for modern browsers */
.mb-3:has(.is-invalid),
.mb-3:has(:invalid) {
  border-left: 4px solid var(--bs-danger);
  padding-left: 15px;
  margin-left: -19px;
}

.form-check-input {
  border: 2px solid var(--bs-body-color);
  border-radius: 0;
  width: 1.5em;
  height: 1.5em;
}

.form-check-input:checked {
  background-color: var(--bs-body-color);
  border-color: var(--bs-body-color);
}

/* --------------------------------------------------------------------------
   5. Navbar
   -------------------------------------------------------------------------- */
.navbar {
  background-color: var(--bs-dark) !important;
  border-bottom: 10px solid var(--bs-primary);
  padding: 0.5rem 0;
}

.navbar-brand {
  color: #fff !important;
  font-weight: 700;
  font-size: 1.5rem;
}

.navbar .nav-link {
  color: #fff !important;
  text-decoration: underline !important; /* Whitehall links always underlined */
}

.navbar .nav-link:hover {
  text-decoration-thickness: 3px !important;
}

/* --------------------------------------------------------------------------
   6. Cards
   -------------------------------------------------------------------------- */
.card {
  border: 1px solid var(--bs-border-color);
  border-left: 5px solid var(--bs-primary);
  background-color: #fff;
}

/* --------------------------------------------------------------------------
   7. Tables
   -------------------------------------------------------------------------- */
.table {
  --bs-table-bg: transparent;
  border-top: 1px solid var(--bs-border-color);
}

.table th {
  border-bottom: 1px solid var(--bs-body-color);
}

.table td {
  border-bottom: 1px solid var(--bs-border-color);
}

/* --------------------------------------------------------------------------
   8. Badges
   -------------------------------------------------------------------------- */
.badge {
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   9. Breadcrumbs
   -------------------------------------------------------------------------- */
.breadcrumb-item + .breadcrumb-item::before {
  content: ">";
  color: var(--bs-secondary-color);
}

.breadcrumb a {
  color: var(--bs-secondary-color);
  font-size: 0.875rem;
}

/* --------------------------------------------------------------------------
   10. Dark Mode
   -------------------------------------------------------------------------- */
[data-bs-theme="dark"] {
  --bs-body-bg: #0b0c0c;
  --bs-body-color: #ffffff;
  --bs-tertiary-bg: #1d1d1b;
  --bs-secondary-color: #b1b4b6;
  --bs-border-color: #505a5f;

  --bs-primary: #74b0e0;

  --bs-light: #1d1d1b;
  --bs-dark: #000000;

  --bs-whitehall-surface-dark: #1d1d1b;
}

[data-bs-theme="dark"] .card {
  background-color: var(--bs-whitehall-surface-dark);
  border-color: var(--bs-border-color);
}

[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
  border-color: var(--bs-body-color);
  background-color: var(--bs-body-bg);
  color: var(--bs-body-color);
}

[data-bs-theme="dark"] .btn-secondary {
  background-color: var(--bs-whitehall-surface-dark);
  border-color: var(--bs-border-color);
  color: var(--bs-body-color);
}

/* Focus box-shadows use var(--bs-dark) (#000) which is invisible on the dark
   body bg (#0b0c0c). Override to use --bs-body-color (white) for the inner ring. */
[data-bs-theme="dark"] :focus {
  box-shadow: inset 0 0 0 2px var(--bs-body-color) !important;
}

[data-bs-theme="dark"] .form-control:focus,
[data-bs-theme="dark"] .form-select:focus,
[data-bs-theme="dark"] .form-check-input:focus {
  box-shadow: 0 0 0 2px var(--bs-body-color), 0 0 0 5px var(--bs-warning) !important;
}

/* Ensure global squareness */
.dropdown-menu,
.accordion-item,
.accordion-button,
.alert,
.progress,
.progress-bar,
.modal-content,
.offcanvas,
.toast,
.popover,
.tooltip-inner,
.page-link {
  border-radius: 0 !important;
}