/* University of Portsmouth brand tokens, matching the Page Standards Checker
   (university-of-portsmouth-web-team/webpage-checker-tool). */
:root {
  --uop-purple: #621360;
  --uop-purple-dark: #3c023c;
  --uop-blue: #00a0ff;
  --uop-blue-dark: #0078b4;
  --uop-green: #00856c;
  --crimson: #c4014b;
  --orange: #e17300;

  --white: #ffffff;
  --cool-grey: #d1d1d1;
  --soft-grey: #abaaaa;
  --uop-grey: #505457;
  --black: #000000;

  --bg: #f7f5f8;
  --ink: #2a2c2e;

  --font-head: 'Encode Sans Expanded', 'Segoe UI', Arial, sans-serif;
  --font-body: 'Open Sans', 'Segoe UI', Arial, sans-serif;
  --font-mono: ui-monospace, 'Cascadia Mono', Consolas, monospace;

  --radius: 10px;
  --shadow: 0 1px 3px rgba(60, 2, 60, 0.1), 0 4px 16px rgba(60, 2, 60, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.5;
}

h1,
h2,
legend {
  font-family: var(--font-head);
  color: var(--uop-purple-dark);
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

.intro {
  max-width: 60ch;
}

/* Header + nav */
.site-header {
  background: var(--uop-purple);
  color: var(--white);
  padding: 1rem 1.25rem;
}

.site-header-inner {
  max-width: 900px;
  margin: 0 auto;
}

.site-brand {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.85;
}

.site-header h1 {
  margin: 0.1rem 0 0.75rem;
  color: var(--white);
  font-size: 1.5rem;
}

.site-header nav {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  gap: 1rem;
}

.site-header nav a {
  color: var(--white);
  text-decoration: none;
  padding: 0.4rem 0.1rem;
  border-bottom: 3px solid transparent;
  font-family: var(--font-head);
}

.site-header nav a:hover,
.site-header nav a[aria-current='page'] {
  border-bottom-color: var(--uop-blue);
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--white);
  color: var(--uop-purple-dark);
  padding: 0.75rem 1rem;
  z-index: 100;
  border-radius: 0 0 var(--radius) 0;
}

.skip-link:focus {
  left: 0;
}

/* Forms */
.field-group {
  border: 1px solid var(--cool-grey);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.field {
  margin-bottom: 1rem;
}

.field:last-child {
  margin-bottom: 0;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

input,
select,
textarea {
  width: 100%;
  font: inherit;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--soft-grey);
  border-radius: 6px;
  background: var(--white);
  color: var(--ink);
  min-height: 44px;
}

textarea {
  min-height: 44px;
  resize: vertical;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.hint {
  margin: 0.3rem 0 0;
  font-size: 0.85rem;
  color: var(--uop-grey);
}

.field-errors {
  list-style: none;
  margin: 0.4rem 0 0;
  padding: 0;
  color: var(--crimson);
  font-size: 0.9rem;
}

.field-errors:not(:empty) {
  border-left: 3px solid var(--crimson);
  padding-left: 0.6rem;
}

.field-errors li::before {
  content: 'Error: ';
  font-weight: 700;
}

input[aria-invalid='true'],
select[aria-invalid='true'],
textarea[aria-invalid='true'] {
  border-color: var(--crimson);
  border-width: 2px;
}

/* Row-based UTM table */
.row-toolbar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.bulk-add summary {
  list-style: none;
}

.bulk-add summary::-webkit-details-marker {
  display: none;
}

.bulk-add-body {
  background: var(--white);
  border: 1px solid var(--cool-grey);
  border-radius: var(--radius);
  padding: 1rem;
  margin-top: 0.5rem;
  min-width: 320px;
}

.bulk-add-body label {
  font-size: 0.85rem;
}

.rows-table-scroll {
  overflow-x: auto;
}

.rows-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 900px;
}

.rows-table th,
.rows-table td {
  text-align: left;
  padding: 0.5rem;
  border-bottom: 1px solid var(--cool-grey);
  vertical-align: top;
}

.rows-table thead th {
  background: var(--bg);
  font-family: var(--font-head);
  white-space: nowrap;
}

.rows-table td input,
.rows-table td select {
  min-width: 9rem;
  min-height: 40px;
  padding: 0.4rem 0.5rem;
}

.rows-table .row-pageUrl,
.rows-table .row-campaign {
  min-width: 14rem;
}

.rows-table select:disabled {
  background: var(--bg);
  color: var(--uop-grey);
}

.rows-table .row-source-other,
.rows-table .row-campaignContent-other {
  margin-top: 0.4rem;
}

.rows-table .row-result {
  min-width: 14rem;
}

.filter-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  background: var(--white);
  border: 1px solid var(--cool-grey);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  align-items: end;
}

.filter-form .actions {
  grid-column: 1 / -1;
}

/* Buttons */
.actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 1rem 0;
}

.btn {
  font: inherit;
  font-family: var(--font-head);
  font-weight: 600;
  border-radius: 6px;
  padding: 0.6rem 1.2rem;
  min-height: 44px;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--uop-purple);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--uop-purple-dark);
}

.btn-secondary {
  background: var(--white);
  color: var(--uop-purple);
  border-color: var(--uop-purple);
}

.btn-secondary:hover {
  background: var(--bg);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-small {
  padding: 0.25rem 0.6rem;
  min-height: auto;
  font-size: 0.85rem;
  margin-left: 0.5rem;
}

/* Results */
.results-section {
  background: var(--white);
  border: 1px solid var(--cool-grey);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.results-table th,
.results-table td {
  text-align: left;
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid var(--cool-grey);
  vertical-align: top;
}

.results-table thead th {
  background: var(--bg);
  font-family: var(--font-head);
}

.badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  color: var(--white);
}

.badge-valid {
  background: var(--uop-green);
}

.badge-error {
  background: var(--crimson);
}

.badge-warn {
  background: var(--orange);
  color: var(--black);
}

.row-error-list,
.row-duplicate-note {
  margin: 0.3rem 0 0;
  padding-left: 1.1rem;
  font-size: 0.85rem;
}

.utm-output {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  word-break: break-all;
}

.muted {
  color: var(--uop-grey);
}

/* Dialog */
.dialog-overlay:not([hidden]) {
  display: flex;
  position: fixed;
  inset: 0;
  background: rgba(42, 44, 46, 0.6);
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 200;
}

.dialog {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 480px;
  padding: 1.5rem;
}

/* Accessibility helpers */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

:focus-visible {
  outline: 3px solid var(--uop-blue-dark);
  outline-offset: 2px;
  border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}