/* ── Schedules modal: exception modal, field components, exceptions table, slot picker
   Prefixes: modal-, fld-, pill-toggle, warn-banner, btn-modal-, tutor-search-, xtable, xbadge, slot-
   Tokens: Academic Curator Design System (colors_and_type.css)
─────────────────────────────────────────────────────────── */

/* ════════════════════════════════════════════════════════════
   EXCEPTION MODAL
════════════════════════════════════════════════════════════ */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, .42);
  z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-4);
}

.modal-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%; max-width: 540px;
  max-height: calc(100vh - 32px);
  display: flex; flex-direction: column;
  overflow: hidden;
}

@media (max-width: 600px) {
  .modal-backdrop { padding: 0; }
  .modal-card { max-width: 100%; max-height: 100vh; height: 100vh; border-radius: 0; }
}

.modal-header {
  display: flex; align-items: flex-start;
  padding: var(--space-5) var(--space-5) var(--space-4);
  gap: var(--space-3);
  border-bottom: 1px solid var(--border-default);
}

.modal-title-group { flex: 1; display: flex; flex-direction: column; gap: 2px; }

.modal-title {
  font-size: var(--text-h2); font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-normal); color: var(--fg-primary);
  line-height: var(--leading-snug);
}

.modal-subtitle { font-size: var(--text-xs); color: var(--fg-tertiary); }

.modal-close-btn {
  width: 30px; height: 30px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: none; cursor: pointer;
  color: var(--fg-tertiary); flex-shrink: 0;
  transition: var(--transition-fast);
}
.modal-close-btn:hover { background: var(--color-neutral-100); color: var(--fg-primary); }

.modal-context-strip {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: var(--color-primary-50);
  border-bottom: 1px solid var(--border-default);
  font-size: var(--text-sm); color: var(--color-primary-700);
  font-weight: var(--weight-medium);
}
.modal-context-icon { color: var(--color-primary-600); flex-shrink: 0; display: flex; }

.modal-body {
  flex: 1; overflow-y: auto;
  padding: var(--space-5);
  display: flex; flex-direction: column; gap: var(--space-5);
}
.modal-body-table { padding: var(--space-4) var(--space-5); }

.modal-footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--border-default);
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-3); background: var(--bg-surface);
}
.modal-footer-left, .modal-footer-right { display: flex; align-items: center; gap: var(--space-2); }

/* ── Field components ────────────────────────────────────── */
.fld { display: flex; flex-direction: column; gap: var(--space-2); }
.fld-label-row { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-2); }
.fld-label {
  font-size: var(--text-micro); font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider); text-transform: uppercase;
  color: var(--fg-tertiary);
}
.fld-hint { font-size: var(--text-xs); color: var(--fg-tertiary); letter-spacing: 0; text-transform: none; }
.fld[data-disabled="true"] { opacity: .45; pointer-events: none; }

.fld-date-input, .fld-text-input {
  width: 100%; padding: 9px 12px; min-height: 38px;
  font-family: var(--font-sans); font-size: var(--text-body);
  color: var(--fg-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  outline: none; transition: var(--transition-base);
}
.fld-date-input { cursor: pointer; }
.fld-date-input:focus, .fld-text-input:focus {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-focus);
}
.fld-date-input.invalid, .fld-text-input.invalid { border-color: var(--color-danger); }

.fld-error-msg {
  font-size: var(--text-xs); color: var(--color-danger);
  display: flex; align-items: center; gap: 4px;
}

/* ── Pill toggle ─────────────────────────────────────────── */
.pill-toggle {
  display: flex; padding: 3px;
  background: var(--color-neutral-100);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-default);
  gap: 2px;
}

.pill-toggle-btn {
  flex: 1; padding: 7px 12px;
  font-family: var(--font-sans); font-size: var(--text-sm);
  font-weight: var(--weight-medium); color: var(--fg-secondary);
  background: transparent; border: none; border-radius: 7px;
  cursor: pointer; transition: var(--transition-fast);
  white-space: nowrap;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.pill-toggle-btn:hover:not([disabled]):not(.active) {
  color: var(--fg-primary);
  background: rgba(255,255,255,.5);
}
.pill-toggle-btn.active {
  background: var(--bg-surface);
  color: var(--fg-primary);
  font-weight: var(--weight-semibold);
  box-shadow: var(--shadow-sm);
}
.pill-toggle-btn.active.danger-active { color: var(--color-danger); }
.pill-toggle-btn.active.warning-active { color: var(--color-warning); }
.pill-toggle-btn[disabled] { opacity: .35; cursor: not-allowed; }

/* ── Warning banner ──────────────────────────────────────── */
.warn-banner {
  display: flex; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-warning-light);
  border: 1px solid var(--border-default);
  border-left: 3px solid var(--color-warning);
  border-radius: var(--radius-md);
}
.warn-banner-icon { color: var(--color-warning); flex-shrink: 0; margin-top: 1px; }
.warn-banner-text {
  font-size: var(--text-sm); color: var(--fg-primary);
  line-height: var(--leading-normal);
}
.warn-banner-text strong { font-weight: var(--weight-semibold); color: var(--color-warning); }

/* ── Modal action buttons ────────────────────────────────── */
.btn-modal-primary, .btn-modal-danger, .btn-modal-warning {
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-sans); font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--fg-on-primary); border: none;
  border-radius: var(--radius-md); cursor: pointer;
  transition: var(--transition-base); white-space: nowrap;
}
.btn-modal-primary  { background: var(--color-primary-700); box-shadow: var(--shadow-primary); }
.btn-modal-primary:hover  { background: var(--color-primary-800); }
.btn-modal-danger   { background: var(--color-danger); }
.btn-modal-danger:hover   { background: var(--color-danger-dark); }
.btn-modal-warning  { background: var(--color-warning); }
.btn-modal-warning:hover  { background: var(--color-warning-dark); }
.btn-modal-primary:disabled, .btn-modal-danger:disabled, .btn-modal-warning:disabled {
  opacity: .5; cursor: not-allowed; box-shadow: none;
}

.btn-modal-secondary {
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-sans); font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--fg-secondary); background: transparent; border: none;
  border-radius: var(--radius-md); cursor: pointer;
  transition: var(--transition-fast);
}
.btn-modal-secondary:hover { background: var(--color-neutral-100); color: var(--fg-primary); }

/* ── Tutor search ────────────────────────────────────────── */
.tutor-search-wrap { position: relative; }

.tutor-search-dropdown {
  position: absolute; top: calc(100% + 4px); left: 0; right: 0;
  background: var(--bg-surface); border: 1px solid var(--border-default);
  border-radius: var(--radius-md); box-shadow: var(--shadow-lg);
  z-index: 110; overflow: hidden; max-height: 220px; overflow-y: auto;
}

.tutor-search-item {
  padding: var(--space-2) var(--space-3); font-size: var(--text-sm);
  color: var(--fg-primary); cursor: pointer;
  transition: background var(--transition-fast);
}
.tutor-search-item:hover { background: var(--color-primary-50); color: var(--color-primary-700); }

.tutor-search-empty {
  padding: var(--space-3); font-size: var(--text-sm);
  color: var(--fg-tertiary); font-style: italic;
}

/* ── Exceptions history table ────────────────────────────── */
.xtable {
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-surface);
}

.xtable-head, .xtable-row {
  display: grid;
  grid-template-columns: 110px 120px 1fr 40px;
}

.xtable-head {
  background: var(--color-neutral-50);
  border-bottom: 1px solid var(--border-default);
}

.xtable-head-cell {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-micro); font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider); text-transform: uppercase;
  color: var(--fg-tertiary);
}

.xtable-row { border-bottom: 1px solid var(--border-default); align-items: stretch; }
.xtable-row:last-child { border-bottom: none; }
.xtable-row:hover { background: var(--color-neutral-50); }

.xtable-cell {
  padding: var(--space-3); font-size: var(--text-sm); color: var(--fg-primary);
  display: flex; align-items: center; gap: var(--space-2); min-width: 0;
}
.xtable-cell-date { font-weight: var(--weight-medium); }
.xtable-cell-tutor {
  color: var(--fg-secondary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.xtable-cell-actions { justify-content: center; padding: var(--space-2); }

.xtable-empty {
  padding: var(--space-10) var(--space-4);
  text-align: center;
  color: var(--fg-tertiary); font-size: var(--text-sm);
}
.xtable-empty-icon {
  color: var(--color-neutral-300);
  margin-bottom: var(--space-2); display: inline-flex;
}

.xbadge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px var(--space-2);
  font-size: var(--text-micro); font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider); text-transform: uppercase;
  border-radius: var(--radius-sm); white-space: nowrap;
}
.xbadge-cancelled { background: var(--color-danger-light); color: var(--color-danger); }
.xbadge-replace   { background: var(--color-warning-light); color: var(--color-warning); }

.xtable-row-delete {
  width: 26px; height: 26px; border-radius: var(--radius-sm);
  background: transparent; border: none; cursor: pointer;
  color: var(--fg-tertiary);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition-fast);
}
.xtable-row-delete:hover {
  color: var(--color-danger);
  background: var(--color-danger-light);
}

.xtable-add-section {
  display: flex; justify-content: flex-end;
  margin-top: var(--space-3);
}
.xtable-add-btn {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-sans); font-size: var(--text-sm); font-weight: var(--weight-semibold);
  color: var(--color-primary-700); background: var(--color-primary-light);
  border: 1px solid transparent; border-radius: var(--radius-md);
  cursor: pointer; transition: var(--transition-fast);
}
.xtable-add-btn:hover {
  background: var(--color-primary-100);
  border-color: var(--color-primary-300);
}

/* ── Time Slot Picker ────────────────────────────────────── */
.slot-label {
  cursor: pointer;
  font-size: var(--text-body);
  color: var(--fg-secondary);
  padding: var(--space-1) var(--space-2);
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.slot-label:hover {
  background: var(--color-primary-50);
  color: var(--color-primary-700);
}

.slot-label[hidden],
.m-slot-label[hidden] {
  display: none;
}

.slot-editor {
  padding: var(--space-1) var(--space-2) var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.slot-editor.hidden {
  display: none;
}

/* Mobile slot widget */
.m-slot-widget {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
}

.m-slot-label {
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--fg-primary);
}

.m-slot-label:hover {
  color: var(--color-primary-700);
}

.m-slot-editor {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.m-slot-editor.hidden {
  display: none;
}