/* ==========================================================================
   School Life — components.css
   Reusable UI: buttons, forms, badges, chips, cards, tool cards, tabs,
   tables, modals, toasts, accordions, alerts, stats, search modal, etc.
   Defined once here; every page and tool uses these classes.
   ========================================================================== */

/* ==========================================================================
   Category color hooks — any element with .cat-<id> exposes --cat-color/--cat-soft
   ========================================================================== */
.cat-admin     { --cat-color: var(--cat-admin);     --cat-soft: var(--cat-admin-soft); }
.cat-people    { --cat-color: var(--cat-people);    --cat-soft: var(--cat-people-soft); }
.cat-academics { --cat-color: var(--cat-academics); --cat-soft: var(--cat-academics-soft); }
.cat-daily     { --cat-color: var(--cat-daily);     --cat-soft: var(--cat-daily-soft); }
.cat-reports   { --cat-color: var(--cat-reports);   --cat-soft: var(--cat-reports-soft); }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  --btn-bg: var(--color-surface);
  --btn-fg: var(--color-heading);
  --btn-border: var(--color-border-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: var(--tap);
  padding: 0.6rem 1.15rem;
  border: 1px solid var(--btn-border);
  border-radius: var(--radius-md);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: background-color var(--dur-fast) ease, border-color var(--dur-fast) ease,
    color var(--dur-fast) ease, box-shadow var(--dur-fast) ease, transform var(--dur-fast) ease;
}

/* Default (secondary) hover — variants below override it */
.btn:hover {
  --btn-bg: var(--color-surface-2);
  --btn-border: var(--color-text-subtle);
  color: var(--btn-fg);
}

.btn:active {
  transform: translateY(1px);
}

.btn svg {
  width: 1.15em;
  height: 1.15em;
}

.btn--primary {
  --btn-bg: var(--color-primary);
  --btn-fg: var(--color-on-primary);
  --btn-border: var(--color-primary);
  box-shadow: var(--shadow-primary);
}

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

.btn--soft {
  --btn-bg: var(--color-primary-soft);
  --btn-fg: var(--color-primary);
  --btn-border: transparent;
}

.btn--soft:hover {
  --btn-bg: var(--color-primary-soft-2);
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--color-text-muted);
  --btn-border: transparent;
}

.btn--ghost:hover {
  --btn-bg: var(--color-surface-2);
  --btn-fg: var(--color-heading);
}

.btn--accent {
  --btn-bg: var(--color-accent);
  --btn-fg: var(--color-on-accent);
  --btn-border: var(--color-accent);
}

.btn--accent:hover {
  --btn-bg: var(--color-accent-hover);
  --btn-border: var(--color-accent-hover);
}

.btn--danger {
  --btn-bg: var(--color-danger);
  --btn-fg: var(--color-on-danger);
  --btn-border: var(--color-danger);
}

.btn--danger:hover {
  --btn-bg: var(--color-danger-hover);
  --btn-border: var(--color-danger-hover);
}

.btn--danger-soft {
  --btn-bg: var(--color-danger-soft);
  --btn-fg: var(--color-danger);
  --btn-border: transparent;
}

.btn--danger-soft:hover {
  --btn-bg: var(--color-danger-soft);
  --btn-border: var(--color-danger);
}

/* For dark / gradient backgrounds such as the CTA banner */
.btn--light {
  --btn-bg: var(--color-white);
  --btn-fg: var(--color-cta-ink);
  --btn-border: var(--color-white);
}

.btn--light:hover {
  --btn-bg: var(--color-cta-btn-hover);
  --btn-border: var(--color-cta-btn-hover);
}

.btn--outline-light {
  --btn-bg: transparent;
  --btn-fg: var(--color-on-cta);
  --btn-border: var(--cta-line);
}

.btn--outline-light:hover {
  --btn-bg: var(--cta-hover-bg);
  --btn-border: var(--color-on-cta);
}

.btn--sm {
  min-height: 38px;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
}

.btn--lg {
  min-height: 52px;
  padding: 0.85rem 1.6rem;
  font-size: var(--fs-base);
  border-radius: var(--radius-lg);
}

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

.btn--icon {
  padding: 0;
  width: var(--tap);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn.is-loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn.is-loading::after {
  content: "";
  position: absolute;
  width: 1.1em;
  height: 1.1em;
  border: 2px solid var(--btn-fg);
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.btn .arrow {
  transition: transform var(--dur) var(--ease-out);
}

.btn:hover .arrow {
  transform: translateX(3px);
}

/* Square icon button */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--tap);
  height: var(--tap);
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-muted);
  transition: color var(--dur-fast) ease, background-color var(--dur-fast) ease,
    border-color var(--dur-fast) ease;
}

.icon-btn:hover {
  color: var(--color-heading);
  border-color: var(--color-border-strong);
  background: var(--color-surface-2);
}

.icon-btn svg {
  width: 20px;
  height: 20px;
}

.icon-btn--plain {
  border-color: transparent;
  background: transparent;
}

@media (pointer: coarse) {
  .btn--sm {
    min-height: var(--tap);
  }
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-grid {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 576px) {
  .form-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-grid .span-all { grid-column: 1 / -1; }
}

@media (min-width: 992px) {
  .form-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.field {
  display: grid;
  gap: 0.4rem;
  min-width: 0;
}

.label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-heading);
}

.label .req {
  color: var(--color-danger);
  margin-left: 2px;
}

.input,
.select,
.textarea {
  display: block;
  width: 100%;
  min-height: var(--tap);
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: var(--fs-base);
  line-height: 1.4;
  transition: border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease,
    background-color var(--dur-fast) ease;
}

.input::placeholder,
.textarea::placeholder {
  color: var(--color-text-subtle);
  opacity: 1;
}

.input:hover,
.select:hover,
.textarea:hover {
  border-color: var(--color-text-subtle);
}

.input:focus,
.select:focus,
.textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-focus-ring);
}

.input:disabled,
.select:disabled,
.textarea:disabled {
  background-color: var(--color-surface-2);
  color: var(--color-text-subtle);
  cursor: not-allowed;
}

.input[aria-invalid="true"],
.select[aria-invalid="true"],
.textarea[aria-invalid="true"] {
  border-color: var(--color-danger);
}

.input[aria-invalid="true"]:focus {
  box-shadow: 0 0 0 3px var(--color-danger-soft);
}

.textarea {
  min-height: 110px;
  resize: vertical;
}

.select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 2.5rem;
  background-image: linear-gradient(45deg, transparent 50%, var(--color-text-muted) 50%),
    linear-gradient(135deg, var(--color-text-muted) 50%, transparent 50%);
  background-position: calc(100% - 19px) 52%, calc(100% - 14px) 52%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  cursor: pointer;
}

.select option {
  background-color: var(--color-surface);
  color: var(--color-text);
}

.input--sm,
.select--sm {
  min-height: 38px;
  padding-block: 0.4rem;
  font-size: var(--fs-sm);
}

.hint {
  font-size: var(--fs-xs);
  color: var(--color-text-subtle);
}

.error-text {
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: var(--color-danger);
}

/* Input with leading icon */
.input-icon {
  position: relative;
}

.input-icon > svg {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  width: 18px;
  height: 18px;
  transform: translateY(-50%);
  color: var(--color-text-subtle);
  pointer-events: none;
}

.input-icon .input {
  padding-left: 2.6rem;
}

/* Checkbox & radio */
.check {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--tap);
  cursor: pointer;
  font-size: var(--fs-sm);
}

.check input {
  width: 1.15rem;
  height: 1.15rem;
  margin: 0;
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* Toggle switch: <input type="checkbox" class="switch"> */
.switch {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex-shrink: 0;
  width: 44px;
  height: 24px;
  margin: 0;
  border-radius: var(--radius-pill);
  background: var(--color-surface-3);
  border: 1px solid var(--color-border-strong);
  cursor: pointer;
  transition: background-color var(--dur) ease, border-color var(--dur) ease;
}

.switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease-spring);
}

.switch:checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.switch:checked::after {
  transform: translateX(20px);
}

/* ==========================================================================
   Badges, chips, avatars, kbd
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  line-height: 1.5;
  white-space: nowrap;
  text-decoration: none;
}

.badge svg {
  width: 12px;
  height: 12px;
}

.badge--primary { background: var(--color-primary-soft); color: var(--color-primary); }
.badge--success { background: var(--color-success-soft); color: var(--color-success); }
.badge--warning { background: var(--color-warning-soft); color: var(--color-warning); }
.badge--danger  { background: var(--color-danger-soft);  color: var(--color-danger); }
.badge--info    { background: var(--color-info-soft);    color: var(--color-info); }
.badge--accent  { background: var(--color-accent-soft);  color: var(--color-accent-strong); }
.badge--cat     { background: var(--cat-soft);           color: var(--cat-color); }

a.badge:hover {
  filter: brightness(0.97);
  text-decoration: underline;
}

.badge--dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* Filter chips */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 40px;
  padding: 0.4rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  white-space: nowrap;
  transition: all var(--dur-fast) ease;
}

.chip:hover {
  border-color: var(--color-border-strong);
  color: var(--color-heading);
}

.chip svg {
  width: 16px;
  height: 16px;
}

.chip[aria-pressed="true"],
.chip[aria-selected="true"],
.chip.is-active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-primary);
}

.chip__count {
  padding: 0 0.45rem;
  border-radius: var(--radius-pill);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
}

.chip[aria-pressed="true"] .chip__count,
.chip[aria-selected="true"] .chip__count,
.chip.is-active .chip__count {
  background: var(--color-on-primary);
  color: var(--color-primary);
}

@media (pointer: coarse) {
  .chip { min-height: var(--tap); }
}

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
}

.card__header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.card__title {
  margin: 0;
  font-size: var(--fs-md);
}

.card__body {
  padding: var(--space-5);
}

.card__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
}

.card--pad {
  padding: var(--space-6);
}

.card--hover {
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out),
    border-color var(--dur) ease;
}

.card--hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-strong);
}

/* ---------- Tool icon ---------- */
.tool-icon {
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--cat-soft, var(--color-primary-soft));
  color: var(--cat-color, var(--color-primary));
  transition: transform var(--dur) var(--ease-spring);
}

.tool-icon svg {
  width: 55%;
  height: 55%;
}

.tool-icon--sm {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

.tool-icon--lg {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-lg);
}

/* ---------- Tool card ---------- */
.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  height: 100%;
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out),
    border-color var(--dur) ease;
}

.tool-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: var(--cat-color);
  opacity: 0;
  transition: opacity var(--dur) ease;
}

.tool-card:hover,
.tool-card:focus-within {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-strong);
}

.tool-card:hover::before,
.tool-card:focus-within::before {
  opacity: 1;
}

.tool-card:hover .tool-icon {
  transform: scale(1.08) rotate(-4deg);
}

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

.tool-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.tool-card__title {
  margin: var(--space-1) 0 0;
  font-size: var(--fs-md);
}

.tool-card__link {
  color: var(--color-heading);
  text-decoration: none;
}

.tool-card__link:hover {
  color: var(--color-heading);
}

.tool-card__link:focus-visible {
  outline: none;
}

/* Stretch the link over the whole card */
.tool-card__link::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
}

.tool-card__desc {
  flex: 1;
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.tool-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
}

.tool-card__cta svg {
  width: 16px;
  height: 16px;
  transition: transform var(--dur) var(--ease-out);
}

.tool-card:hover .tool-card__cta svg {
  transform: translateX(4px);
}

/* ---------- Stat card ---------- */
.stat {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
}

.stat__icon {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--stat-soft, var(--color-primary-soft));
  color: var(--stat-color, var(--color-primary));
}

.stat__icon svg {
  width: 22px;
  height: 22px;
}

.stat__label {
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.stat__value {
  margin: 0.1rem 0 0;
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  line-height: 1.1;
  color: var(--color-heading);
  font-variant-numeric: tabular-nums;
}

.stat__trend {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
}

.stat__trend.is-up { color: var(--color-success); }
.stat__trend.is-down { color: var(--color-danger); }

.stat--success { --stat-color: var(--color-success); --stat-soft: var(--color-success-soft); }
.stat--warning { --stat-color: var(--color-warning); --stat-soft: var(--color-warning-soft); }
.stat--danger  { --stat-color: var(--color-danger);  --stat-soft: var(--color-danger-soft); }
.stat--info    { --stat-color: var(--color-info);    --stat-soft: var(--color-info-soft); }

/* ==========================================================================
   Tabs
   ========================================================================== */
.tabs {
  display: flex;
  gap: var(--space-1);
  overflow-x: auto;
  border-bottom: 1px solid var(--color-border);
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--tap);
  padding: 0.5rem 1rem;
  border: 0;
  background: transparent;
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  white-space: nowrap;
  transition: color var(--dur-fast) ease;
}

.tab::after {
  content: "";
  position: absolute;
  left: 0.75rem;
  right: 0.75rem;
  bottom: -1px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--dur) var(--ease-out);
}

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

.tab[aria-selected="true"] {
  color: var(--color-primary);
}

.tab[aria-selected="true"]::after {
  transform: scaleX(1);
}

.tab svg {
  width: 18px;
  height: 18px;
}

.tab-panel {
  padding-top: var(--space-5);
}

/* Segmented control variant */
.segmented {
  display: inline-flex;
  gap: 2px;
  padding: 4px;
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
}

.segmented .tab {
  min-height: 36px;
  border-radius: var(--radius-sm);
}

.segmented .tab::after {
  display: none;
}

.segmented .tab[aria-selected="true"] {
  background: var(--color-surface);
  color: var(--color-heading);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Tables — wide tables scroll inside their own wrapper
   ========================================================================== */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: var(--fs-sm);
}

.table caption {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: var(--fw-semibold);
  color: var(--color-heading);
}

.table th,
.table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: middle;
}

.table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--color-surface-2);
  color: var(--color-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.table tbody tr {
  transition: background-color var(--dur-fast) ease;
}

.table tbody tr:hover {
  background: var(--color-surface-2);
}

.table tbody tr:last-child td {
  border-bottom: 0;
}

.table--striped tbody tr:nth-child(even) {
  background: var(--color-bg);
}

.table--compact th,
.table--compact td {
  padding: 0.5rem 0.75rem;
}

.table .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.table .actions {
  width: 1%;
  white-space: nowrap;
  text-align: right;
}

.table-cell-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 180px;
}

.table-cell-user small {
  display: block;
  color: var(--color-text-subtle);
  font-size: var(--fs-xs);
}

/* ==========================================================================
   Toolbar (search + filters above tables)
   ========================================================================== */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.toolbar__grow {
  flex: 1 1 220px;
  min-width: 0;
}

.toolbar .field {
  flex: 0 1 180px;
}

/* Phones: full-width search, filters two per row */
@media (max-width: 575.98px) {
  .toolbar .field {
    flex: 1 1 calc(50% - var(--space-3));
  }

  .toolbar .toolbar__grow {
    flex-basis: 100%;
  }
}

/* ==========================================================================
   Modal (opened by ui.js)
   ========================================================================== */
.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  place-items: center;
  padding: var(--space-4);
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  animation: fade-in var(--dur) ease both;
}

.modal__dialog {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(560px, 100%);
  max-height: calc(100vh - 2rem);
  max-height: calc(100dvh - 2rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  box-shadow: var(--shadow-xl);
  animation: pop-in var(--dur-slow) var(--ease-out) both;
}

.modal--lg .modal__dialog { width: min(820px, 100%); }
.modal--sm .modal__dialog { width: min(420px, 100%); }

.modal.is-closing .modal__backdrop {
  animation: fade-out var(--dur) ease both;
}

.modal.is-closing .modal__dialog {
  animation: pop-out var(--dur) ease both;
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.modal__title {
  margin: 0;
  font-size: var(--fs-lg);
}

.modal__body {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: var(--space-5);
}

.modal__footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
}

/* Bottom-sheet style on small phones */
@media (max-width: 575.98px) {
  .modal {
    place-items: end stretch;
    padding: 0;
  }

  .modal__dialog,
  .modal--lg .modal__dialog,
  .modal--sm .modal__dialog {
    width: 100%;
    max-height: 92dvh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    animation-name: sheet-in;
  }

  .modal.is-closing .modal__dialog {
    animation-name: sheet-out;
  }

  .modal__footer .btn {
    flex: 1;
  }
}

/* ==========================================================================
   Toasts (shown by ui.js)
   ========================================================================== */
.toast-region {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  width: min(380px, calc(100vw - 2rem));
  pointer-events: none;
}

.toast {
  --toast-color: var(--color-primary);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--toast-color);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  font-size: var(--fs-sm);
  pointer-events: auto;
  animation: toast-in var(--dur-slow) var(--ease-out) both;
}

.toast.is-leaving {
  animation: toast-out var(--dur) ease both;
}

.toast__icon {
  width: 20px;
  height: 20px;
  margin-top: 1px;
  color: var(--toast-color);
}

.toast__body {
  flex: 1;
  min-width: 0;
}

.toast__title {
  display: block;
  color: var(--color-heading);
  font-weight: var(--fw-semibold);
}

.toast__msg {
  margin: 0;
  color: var(--color-text-muted);
}

.toast__close {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
}

.toast--success { --toast-color: var(--color-success); }
.toast--warning { --toast-color: var(--color-warning); }
.toast--danger  { --toast-color: var(--color-danger); }
.toast--info    { --toast-color: var(--color-info); }

/* ==========================================================================
   Accordion (FAQ, help) — button + panel, or <details>
   ========================================================================== */
.accordion {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  overflow: hidden;
}

.accordion__item + .accordion__item {
  border-top: 1px solid var(--color-border);
}

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
  min-height: 60px;
  padding: var(--space-4) var(--space-5);
  border: 0;
  background: transparent;
  color: var(--color-heading);
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  text-align: left;
  transition: background-color var(--dur-fast) ease;
}

.accordion__trigger:hover {
  background: var(--color-surface-2);
}

.accordion__icon {
  position: relative;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary-soft);
}

.accordion__icon::before,
.accordion__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 12px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary);
  transform: translate(-50%, -50%);
  transition: transform var(--dur) var(--ease-out);
}

.accordion__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.accordion__trigger[aria-expanded="true"] .accordion__icon::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-slow) var(--ease-out);
}

.accordion__panel.is-open {
  grid-template-rows: 1fr;
}

/* visibility keeps links inside a collapsed panel out of the tab order,
   delayed so the closing animation can finish first */
.accordion__content {
  min-height: 0;
  overflow: hidden;
  visibility: hidden;
  transition: visibility 0s linear var(--dur-slow);
}

.accordion__panel.is-open .accordion__content {
  visibility: visible;
  transition-delay: 0s;
}

.accordion__content > div {
  padding: 0 var(--space-5) var(--space-5);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Alerts, empty states, misc
   ========================================================================== */
.alert {
  --alert-color: var(--color-info);
  --alert-soft: var(--color-info-soft);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--alert-color);
  border-radius: var(--radius-md);
  background: var(--alert-soft);
  color: var(--color-text);
  font-size: var(--fs-sm);
}

.alert svg {
  width: 20px;
  height: 20px;
  color: var(--alert-color);
}

.alert strong {
  color: var(--color-heading);
}

.alert--success { --alert-color: var(--color-success); --alert-soft: var(--color-success-soft); }
.alert--warning { --alert-color: var(--color-warning); --alert-soft: var(--color-warning-soft); }
.alert--danger  { --alert-color: var(--color-danger);  --alert-soft: var(--color-danger-soft); }

.empty {
  display: grid;
  justify-items: center;
  gap: var(--space-3);
  padding: var(--space-12) var(--space-4);
  text-align: center;
  color: var(--color-text-muted);
}

.empty__icon {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-surface-2);
  color: var(--color-text-subtle);
}

.empty__icon svg {
  width: 30px;
  height: 30px;
}

.empty__title {
  margin: 0;
  font-size: var(--fs-md);
}

.spinner {
  display: inline-block;
  width: 22px;
  height: 22px;
  border: 3px solid var(--color-primary-soft-2);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.progress {
  height: 8px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: var(--color-surface-3);
}

.progress__bar {
  height: 100%;
  width: var(--value, 0%);
  border-radius: inherit;
  background: var(--progress-color, var(--color-primary));
  transition: width var(--dur-slow) var(--ease-out);
}

.skeleton {
  border-radius: var(--radius-sm);
  background: var(--color-skeleton);
  animation: pulse 1.4s ease-in-out infinite;
}

.divider {
  height: 1px;
  margin-block: var(--space-6);
  background: var(--color-border);
}

/* ==========================================================================
   Search modal (Ctrl/Cmd + K) — built by site.js
   ========================================================================== */
.search-modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: clamp(0.75rem, 8vh, 6rem) var(--space-4) var(--space-4);
}

.search-modal__backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  opacity: 0;
  transition: opacity var(--dur) ease;
}

.search-modal__panel {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(640px, 100%);
  max-height: min(560px, calc(100dvh - 2rem));
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  transform: translate3d(0, -12px, 0) scale(0.98);
  transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}

.search-modal.is-open .search-modal__backdrop {
  opacity: 1;
}

.search-modal.is-open .search-modal__panel {
  opacity: 1;
  transform: none;
}

.search-modal__field {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.search-modal__field > svg {
  width: 20px;
  height: 20px;
  color: var(--color-text-subtle);
}

.search-modal__input {
  flex: 1;
  min-width: 0;
  min-height: 60px;
  border: 0;
  background: transparent;
  color: var(--color-heading);
  font-size: var(--fs-md);
}

.search-modal__input:focus {
  outline: none;
}

.search-modal__input::placeholder {
  color: var(--color-text-subtle);
}

.search-modal__input::-webkit-search-cancel-button {
  display: none;
}

.search-modal__close {
  min-height: 32px;
  border: 0;
  background: none;
  padding: 0;
}

.search-modal__label {
  margin: var(--space-3) var(--space-4) var(--space-1);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}

.search-results {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: var(--space-1) var(--space-2) var(--space-2);
}

.search-result__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text);
  text-decoration: none;
}

.search-result[aria-selected="true"] .search-result__link {
  background: var(--color-primary-soft);
  color: var(--color-heading);
}

.search-result__text {
  display: grid;
  flex: 1;
  min-width: 0;
}

.search-result__name {
  font-weight: var(--fw-semibold);
  color: var(--color-heading);
}

.search-result__desc {
  overflow: hidden;
  font-size: var(--fs-xs);
  color: var(--color-text-subtle);
  white-space: nowrap;
  text-overflow: ellipsis;
}

.search-result__cat {
  display: none;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--cat-color);
  white-space: nowrap;
}

.search-result__enter {
  display: none;
  width: 18px;
  height: 18px;
  color: var(--color-primary);
}

.search-result[aria-selected="true"] .search-result__enter {
  display: block;
}

@media (min-width: 576px) {
  .search-result__cat {
    display: inline;
  }
}

.search-empty {
  padding: var(--space-10) var(--space-4);
  text-align: center;
  color: var(--color-text-muted);
}

.search-modal__foot {
  display: none;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-2);
  font-size: var(--fs-xs);
  color: var(--color-text-subtle);
}

.search-modal__foot span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

@media (min-width: 576px) {
  .search-modal__foot {
    display: flex;
  }
}

/* ==========================================================================
   Subject chip (timetables) — colour comes from a .cat-* class
   ========================================================================== */
.subj {
  display: inline-block;
  min-width: 74px;
  padding: 0.3rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--cat-soft, var(--color-surface-2));
  color: var(--cat-color, var(--color-text));
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  line-height: 1.3;
}

.subj small {
  display: block;
  font-weight: var(--fw-regular);
  opacity: 0.85;
}

.subj.is-clash {
  outline: 2px solid var(--color-danger);
  outline-offset: 1px;
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.subj--free {
  background: transparent;
  color: var(--color-text-subtle);
  font-weight: var(--fw-regular);
}

/* ==========================================================================
   Dropdown menu (ui.menu)
   ========================================================================== */
.menu {
  position: fixed;
  z-index: var(--z-toast);
  min-width: 200px;
  max-width: min(320px, calc(100vw - 16px));
  padding: var(--space-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-xl);
  animation: menu-in var(--dur) var(--ease-out) both;
}

@keyframes menu-in {
  from { opacity: 0; transform: translate3d(0, -6px, 0) scale(0.98); }
}

.menu__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  min-height: 40px;
  padding: var(--space-2) var(--space-3);
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  text-align: left;
  text-decoration: none;
}

.menu__item:hover,
.menu__item:focus-visible {
  outline: none;
  background: var(--color-surface-2);
  color: var(--color-heading);
}

.menu__item svg {
  width: 18px;
  height: 18px;
  color: var(--color-text-subtle);
}

.menu__item--danger,
.menu__item--danger svg {
  color: var(--color-danger);
}

.menu__item:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.menu__sep {
  height: 1px;
  margin: var(--space-1) 0;
  background: var(--color-border);
}

.menu__header {
  padding: var(--space-2) var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-1);
  font-size: var(--fs-sm);
}

.menu__header strong {
  display: block;
}

.menu__header span {
  color: var(--color-text-subtle);
  font-size: var(--fs-xs);
}

@media (pointer: coarse) {
  .menu__item { min-height: var(--tap); }
}

/* Signed-in account button (header + drawer) */
.is-signed-in .avatar {
  width: 24px;
  height: 24px;
  font-size: 0.65rem;
  margin-left: -0.35rem;
}

.is-signed-in > svg:last-child {
  width: 14px;
  height: 14px;
}

/* ==========================================================================
   Sortable headers & pagination (ui.dataTable)
   ========================================================================== */
.th-sort {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin: -0.4rem -0.5rem;
  padding: 0.4rem 0.5rem;
  border: 0;
  border-radius: var(--radius-xs);
  background: none;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
}

.th-sort:hover {
  background: var(--color-surface-3);
}

.th-sort__icon {
  width: 14px;
  height: 14px;
  opacity: 0.55;
}

[aria-sort="ascending"] .th-sort__icon,
[aria-sort="descending"] .th-sort__icon {
  opacity: 1;
  color: var(--color-primary);
}

.table td .empty {
  padding-block: var(--space-8);
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.pagination__info {
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.pagination__info--solo {
  margin-top: var(--space-3);
}

.pagination__pages {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.pagination__btn {
  display: inline-grid;
  place-items: center;
  min-width: 38px;
  height: 38px;
  padding: 0 var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
}

.pagination__btn:hover:not(:disabled) {
  border-color: var(--color-border-strong);
  background: var(--color-surface-2);
}

.pagination__btn[aria-current="page"] {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.pagination__btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.pagination__btn svg {
  width: 16px;
  height: 16px;
}

.pagination__gap {
  align-self: center;
  padding: 0 var(--space-1);
  color: var(--color-text-subtle);
}

@media (pointer: coarse) {
  .pagination__btn { min-width: var(--tap); height: var(--tap); }
}

/* ==========================================================================
   Password field with show / hide toggle
   ========================================================================== */
.password-field {
  position: relative;
}

.password-field .input {
  padding-right: 3rem;
}

.password-toggle {
  position: absolute;
  top: 50%;
  right: 2px;
  display: grid;
  place-items: center;
  width: 42px;
  height: 40px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text-subtle);
  transform: translateY(-50%);
}

.password-toggle:hover {
  color: var(--color-heading);
}

.password-toggle svg {
  width: 20px;
  height: 20px;
}

/* ==========================================================================
   Chart fallback (shown until Chart.js loads, or when offline)
   ========================================================================== */
.chart-box {
  position: relative;
  height: 280px;
}

.chart-fallback {
  display: flex;
  align-items: flex-end;
  gap: clamp(4px, 1vw, 10px);
  height: 100%;
  padding-top: var(--space-4);
}

.chart-fallback__col {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  height: 100%;
  min-width: 0;
}

.chart-fallback__val {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
}

.chart-fallback__bar {
  flex: 1;
  width: 100%;
  max-width: 36px;
  border-radius: 6px 6px 2px 2px;
  background: var(--chart-1);
  transform: scaleY(var(--h, 0));
  transform-origin: bottom;
}

.chart-fallback__label {
  overflow: hidden;
  max-width: 100%;
  font-size: var(--fs-xs);
  color: var(--color-text-subtle);
  white-space: nowrap;
  text-overflow: ellipsis;
}

.chart-fallback--list {
  display: grid;
  align-content: center;
  gap: var(--space-3);
}

.chart-fallback--list li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
}

.chart-fallback--list strong {
  margin-left: auto;
}

.chart-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

/* ==========================================================================
   Style-guide swatches
   ========================================================================== */
.sg-swatches {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(150px, 100%), 1fr));
  gap: var(--space-3);
}

.swatch {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: var(--fs-xs);
}

.swatch__chip {
  height: 52px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.sg-h1 {
  margin: 0 0 0.5em;
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  color: var(--color-heading);
}

.swatch code {
  padding: 0;
  background: none;
  overflow-wrap: anywhere;
}

/* ==========================================================================
   Keyframes
   ========================================================================== */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { opacity: 0.5; } }
@keyframes fade-in { from { opacity: 0; } }
@keyframes fade-out { to { opacity: 0; } }
@keyframes pop-in { from { opacity: 0; transform: translate3d(0, 16px, 0) scale(0.97); } }
@keyframes pop-out { to { opacity: 0; transform: translate3d(0, 10px, 0) scale(0.98); } }
@keyframes sheet-in { from { transform: translate3d(0, 100%, 0); } }
@keyframes sheet-out { to { transform: translate3d(0, 100%, 0); } }
@keyframes toast-in { from { opacity: 0; transform: translate3d(0, 16px, 0) scale(0.96); } }
@keyframes toast-out { to { opacity: 0; transform: translate3d(24px, 0, 0); } }