/* ============================================================
   University of Portsmouth — Induction Timetables
   MyPort design system (Storybook palette) — WCAG 2.2 AA
   ============================================================ */

/* --- Design tokens --- */
:root {
  --color-navy: #0078B4;
  --color-navy-dark: #004F76;
  --color-navy-medium: #005681;
  --color-gold: #621360;
  --color-gold-light: #00A0FF;
  --color-teal: #005681;
  --color-teal-light: #0078B4;
  --color-white: #ffffff;
  --color-bg: #FAFAFA;
  --color-bg-warm: #F2FAFF;
  --color-surface: #ffffff;
  --color-border: #D1D1D1;
  --color-border-strong: #ABAAAA;
  --color-text: #3C3C3C;
  --color-text-secondary: #505457;
  --color-text-muted: #505457;
  --color-link: #0078B4;
  --color-link-hover: #004F76;
  --color-focus: #0078B4;
  --color-error: #B20145;
  --color-success: #1A6B3A;
  --color-online: #0078B4;
  --color-heading: #3C023C;

  --font-serif: 'Encode Sans Expanded', Helvetica, Arial, sans-serif;
  --font-sans: 'Open Sans', 'Segoe UI', Helvetica, Arial, sans-serif;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;

  --radius-sm: 0;
  --radius-md: 0;
  --radius-lg: 0;

  --shadow-card: 0 2px 8px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.06);
  --shadow-card-hover: 0 6px 20px rgba(0,0,0,0.12), 0 2px 6px rgba(0,0,0,0.08);
  --shadow-header: 0 2px 12px rgba(0,0,0,0.15);

  --transition: 0.2s ease;
  --max-width: 1140px;
}

/* --- Reset & base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

/* Focus styles — WCAG 2.2 AA */
:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 0;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

/* --- Links --- */
a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition);
}
a:hover { color: var(--color-link-hover); }

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-heading);
}
h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h3 { font-size: 1.125rem; }

/* --- Listing container --- */
.listing-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

/* --- Search panel --- */
.search-panel {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: 0;
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-card);
}
.search-label {
  display: block;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}
.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.search-icon {
  position: absolute;
  left: 14px;
  color: var(--color-text-muted);
  pointer-events: none;
}
#course-search {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 12px 44px;
  border: 2px solid var(--color-border-strong);
  border-radius: 0;
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
  appearance: none;
}
#course-search::placeholder { color: var(--color-text-muted); }
#course-search:focus {
  outline: none;
  border-color: var(--color-focus);
  box-shadow: 0 0 0 3px rgba(0,94,184,0.2);
}
/* Remove browser default search styling */
#course-search::-webkit-search-cancel-button { -webkit-appearance: none; }

.clear-btn {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 4px;
  display: flex;
  align-items: center;
  border-radius: 0;
  transition: color var(--transition);
}
.clear-btn:hover { color: var(--color-text); }

.search-hint {
  margin-top: var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* --- Filter bar --- */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
.filter-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}
.filter-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}
.filter-btn {
  background: var(--color-surface);
  border: 2px solid var(--color-border-strong);
  border-radius: 0;
  padding: 6px 16px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.filter-btn:hover {
  border-color: var(--color-navy);
  color: var(--color-navy);
}
.filter-btn.active, .filter-btn[aria-pressed="true"] {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
}
.results-count {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* --- Alpha index --- */
.alpha-index {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: var(--space-lg);
  padding: var(--space-sm) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.alpha-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0;
  transition: all var(--transition);
}
/* Clickable letters: clear button affordance (blue border + blue text) */
.alpha-link.has-courses {
  color: var(--color-navy);
  background: var(--color-white);
  border: 1.5px solid var(--color-navy);
  cursor: pointer;
}
.alpha-link.has-courses:hover,
.alpha-link.has-courses:focus-visible {
  background: var(--color-navy);
  color: var(--color-white);
}
/* Unavailable letters: no border, dimmed, not clickable */
.alpha-link.disabled {
  color: #949494;
  background: transparent;
  border: 1.5px solid transparent;
  cursor: default;
  pointer-events: none;
}

/* --- Letter section --- */
.letter-section { margin-bottom: var(--space-xl); }
.letter-heading {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-navy);
  border-bottom: 3px solid var(--color-gold);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-md);
  display: inline-block;
}

/* --- Course cards --- */
.course-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0;
  margin-bottom: var(--space-md);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  list-style: none;
}
.course-card:hover {
  box-shadow: var(--shadow-card-hover);
}
.course-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  gap: var(--space-md);
}
.course-name {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-heading);
  flex: 1;
  min-width: 0;
}
/* Course code shown beside the name only where two courses share a name
   (WD-1076). #505457 on the card background clears WCAG 2.2 AA at this size. */
.course-code-qualifier {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  white-space: nowrap;
}
.course-type-badge {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 0;
  flex-shrink: 0;
}
.badge-UG {
  background: #F2FAFF;
  color: #005681;
  border: 1px solid #99CDE9;
}
.badge-PGT {
  background: #F7EFF7;
  color: #621360;
  border: 1px solid #D4A8D3;
}
.badge-Other {
  background: #F7F7F7;
  color: #3C3C3C;
  border: 1px solid #D1D1D1;
}
.year-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg) var(--space-md);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}
.year-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-link);
  text-decoration: none;
  padding: 6px 14px;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: 0;
  transition: all var(--transition);
  cursor: pointer;
}
.year-link:hover {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
}
.year-link .event-count {
  background: var(--color-heading);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 0;
}
.year-link:hover .event-count {
  background: var(--color-white);
  color: var(--color-heading);
}
.no-events-badge {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* --- No results --- */
.no-results {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  color: var(--color-text-secondary);
}
.no-results-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  display: block;
  aria-hidden: true;
}
.no-results h2 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

/* --- Loading state --- */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-2xl);
  color: var(--color-text-muted);
  gap: var(--space-md);
}
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-navy);
  border-radius: 0;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   DETAIL VIEW
   ============================================================ */
.view-detail { display: block; }

.detail-header {
  background: var(--color-navy);
  padding: var(--space-md) 0;
}
.detail-header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  flex-wrap: wrap;
}
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-navy-dark);
  border: 2px solid var(--color-white);
  border-radius: 0;
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 8px 16px;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.back-btn:hover {
  background: var(--color-white);
  border-color: var(--color-white);
  color: var(--color-navy-dark);
}
.detail-breadcrumb {
  font-size: 0.8125rem;
  color: var(--color-white);
}

/* Detail content grid */
.detail-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-xl);
  align-items: start;
}
@media (max-width: 860px) {
  .detail-content {
    grid-template-columns: 1fr;
  }
  .detail-sidebar { order: -1; }
}

.detail-main h1 {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 3px solid var(--color-gold);
}

/* Year tabs */
.year-tabs {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}
.year-tab {
  background: var(--color-surface);
  border: 2px solid var(--color-border-strong);
  border-bottom: none;
  border-radius: 0;
  padding: 10px 24px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.year-tab:hover { color: var(--color-navy); border-color: var(--color-navy); }
.year-tab.active, .year-tab[aria-selected="true"] {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
}

/* Welcome/accounts blocks */
.welcome-block,
.accounts-block {
  background: var(--color-surface);
  border-left: 4px solid var(--color-teal);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}
.welcome-block h2,
.accounts-block h2 {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
  color: var(--color-teal);
}
.welcome-block p,
.accounts-block p { font-size: 0.9375rem; color: var(--color-text-secondary); }

/* Timetable */
#timetable-section {
  margin-bottom: var(--space-xl);
}
#timetable-section h2 {
  margin-bottom: var(--space-lg);
}

.timetable-day-group {
  margin-bottom: var(--space-xl);
}
.timetable-day-heading {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  color: var(--color-white);
  background: var(--color-heading);
  padding: var(--space-sm) var(--space-md);
  border-radius: 0;
  margin-bottom: 0;
}
.timetable-day-group .timetable-table { margin-top: 0; border: 1px solid var(--color-border); border-top: 0; }

.timetable-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}
.timetable-table thead th {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 2px solid var(--color-border);
  text-align: left;
  background: var(--color-surface);
}
.timetable-table tbody tr {
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}
.timetable-table tbody tr:hover { background: var(--color-bg); }
.timetable-table tbody td {
  padding: var(--space-md);
  vertical-align: top;
}
.timetable-table tbody tr:last-child { border-bottom: none; }

.event-time {
  font-weight: 600;
  white-space: nowrap;
  color: var(--color-navy);
  font-variant-numeric: tabular-nums;
}
.event-title {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}
.event-description {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.event-location {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}
.event-location-icon { margin-right: 4px; }
.online-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #F2FAFF;
  color: var(--color-online);
  border: 1px solid #99CDE9;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.event-ids {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-family: 'Courier New', monospace;
  margin-top: 4px;
}

/* No timetable */
.no-timetable {
  background: var(--color-bg-warm);
  border: 2px dashed var(--color-border);
  border-radius: 0;
  padding: var(--space-xl);
  text-align: center;
  color: var(--color-text-muted);
}

/* Info sections */
.queries-block,
.international-block,
.further-info-block {
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: 0;
  border: 1px solid var(--color-border);
}
.queries-block h2,
.international-block h2,
.further-info-block h2 {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
  color: var(--color-navy);
}
.queries-block p + p,
.international-block p + p { margin-top: var(--space-sm); }
.further-info-block ul {
  padding-left: var(--space-lg);
  margin-top: var(--space-sm);
}
.further-info-block li + li { margin-top: 6px; }

/* Sidebar */
.detail-sidebar {
  position: sticky;
  top: var(--space-lg);
}
.sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0;
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow-card);
}
.sidebar-card h3 {
  font-size: 1rem;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-gold);
  color: var(--color-navy);
}
.sidebar-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sidebar-links li a {
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 6px;
}
.sidebar-links li a::before {
  content: '→';
  color: var(--color-gold);
  flex-shrink: 0;
}
#sidebar-dl { font-size: 0.875rem; }
#sidebar-dl dt {
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: var(--space-sm);
}
#sidebar-dl dd { color: var(--color-text); margin-top: 2px; }

/* --- Responsive --- */
@media (max-width: 600px) {
  .listing-container { padding: var(--space-lg) var(--space-md); }
  .search-panel { padding: var(--space-md); }
  .course-card-header { flex-direction: column; align-items: flex-start; }
  .filter-bar { flex-direction: column; align-items: flex-start; }
  .detail-content { padding: var(--space-lg) var(--space-md); }
  .timetable-table { font-size: 0.875rem; }
  .timetable-table thead th:nth-child(4) { display: none; }
  .timetable-table tbody td:nth-child(4) { display: none; }
}

@media (max-width: 480px) {
  .timetable-table thead th:nth-child(3) { display: none; }
  .timetable-table tbody td:nth-child(3) { display: none; }
}

/* Hidden utility */
[hidden] { display: none !important; }

.meta-note { font-size: 0.75rem; color: var(--textm); margin-top: 8px; }

/* Multi-room bookings: one room + building pair per line */
.location-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: inline-block;
  vertical-align: top;
}
.location-list li { display: block; }
.location-list li + li { margin-top: 2px; }

/* Meeting links lifted out of the event details — each on its own line */
.event-links { margin-top: 6px; }

.event-join-link {
  display: block;
  color: var(--color-link);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
  margin-top: 4px;
  overflow-wrap: anywhere;
}
.event-join-link:hover { color: var(--color-link-hover); }