html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Vazirmatn", "Segoe UI", Tahoma, sans-serif;
  background: var(--cu-bg, #f0f9ff);
  color: var(--cu-neutral, #1b263b);
}

button,
input,
select,
textarea {
  font-family: "Vazirmatn", "Segoe UI", Tahoma, sans-serif;
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
  box-shadow: 0 0 0 0.1rem rgba(255, 255, 255, 0.85), 0 0 0 0.22rem rgba(37, 140, 251, 0.35);
}

.jdate-filter-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
}

.jdate-filter-wrap .js-jalali-filter-date-display {
  direction: ltr;
  text-align: left;
}

.jdate-filter-btn {
  flex: 0 0 auto;
}

.js-time-24h-input {
  direction: ltr;
  text-align: left;
}

.filter-box-collapsible {
  border: 1px solid #e0e9f4;
  border-radius: 14px;
  margin-top: 10px;
  margin-bottom: 14px;
  background: #fbfdff;
  overflow: hidden;
}

.filter-box-collapsible[open] {
  overflow: visible;
}

.filter-box-summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  cursor: pointer;
  padding: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  color: #1f2a3a;
}

.filter-box-summary::-webkit-details-marker {
  display: none;
}

.filter-box-summary i {
  transition: transform 0.2s ease;
}

.filter-box-collapsible[open] .filter-box-summary i {
  transform: rotate(180deg);
}

.filter-box-form {
  border: 0 !important;
  border-top: 1px solid #e0e9f4 !important;
  border-radius: 0 !important;
  margin-top: 0 !important;
  padding: 12px;
}

.filter-box-form h2 {
  margin: 0 0 10px;
  font-size: 1rem;
  font-weight: 800;
  color: #1f2a3a;
}

.filter-box-form .field-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 0;
}

.filter-box-form .field-grid.two-cols {
  grid-template-columns: 1fr 1fr;
}

.filter-box-form .field-full {
  grid-column: 1 / -1;
}

.filter-box-form .field-grid label,
.filter-box-form .filter-grid label {
  display: block;
  margin-bottom: 4px;
  color: #5f728a;
  font-size: 0.82rem;
  font-weight: 700;
}

.filter-box-form .filter-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 0;
}

.filter-box-form .filter-row,
.filter-form .filter-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  align-items: end;
}

.filter-box-form .check-row {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: #3f556f;
  margin-bottom: 10px;
}

.filter-box-form .actions-row,
.filter-box-form .filter-actions,
.filter-form .filter-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.filter-box-form .filter-row > .btn,
.filter-box-form .filter-row > button[type="submit"],
.filter-form .filter-row > .btn,
.filter-form .filter-row > button[type="submit"] {
  grid-column: 1 / -1;
  justify-self: start;
}

.filter-box-form > .btn[type="submit"],
.filter-box-form > button[type="submit"]:not(.jdate-filter-btn) {
  margin-top: 14px;
}

@media (min-width: 640px) {
  .filter-box-form .field-grid.two-cols {
    grid-template-columns: 1fr 1fr;
  }

  .filter-box-form .filter-grid,
  .filter-box-form .filter-row,
  .filter-form .filter-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 992px) {
  .filter-box-form .filter-row:not(.filter-row--single),
  .filter-form .filter-row:not(.filter-row--single) {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .filter-box-form .filter-row.filter-row--wide,
  .filter-form .filter-row.filter-row--wide {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .filter-box-form .field-grid.two-cols {
    grid-template-columns: 1fr;
  }
}

.jdate-popover {
  position: fixed;
  z-index: 2600;
  width: 320px;
  max-width: calc(100vw - 20px);
  max-height: calc(100vh - 16px);
  overflow: auto;
  background: #fff;
  border: 1px solid #dee2e6;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  padding: 10px;
}

.jdate-popover.d-none {
  display: none;
}

.jdate-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.jdate-title {
  display: flex;
  align-items: center;
  gap: 6px;
}

.jdate-title .form-select {
  min-height: 34px;
  touch-action: manipulation;
}

.jdate-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 6px;
  font-size: 0.8rem;
  color: #6c757d;
  text-align: center;
}

.jdate-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.jdate-day {
  border: 1px solid #e9ecef;
  border-radius: 8px;
  background: #fff;
  height: 34px;
  line-height: 32px;
  font-size: 0.85rem;
  text-align: center;
  cursor: pointer;
  padding: 0;
}

.jdate-day:hover {
  border-color: #0d6efd;
  background: #f8fbff;
}

.jdate-day.is-selected {
  background: #0d6efd;
  border-color: #0d6efd;
  color: #fff;
}

.jdate-day.is-empty {
  border-color: transparent;
  background: transparent;
  cursor: default;
}

.jdate-footer {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 10px;
}

/* App-wide polish layer — aligned with ClassUp design tokens */
:root {
  --ui-text: var(--cu-neutral, #1b263b);
  --ui-muted: var(--cu-muted, #61718b);
  --ui-border: var(--cu-border, #cfe8f5);
  --ui-border-strong: #b8ddef;
  --ui-surface: var(--cu-surface, #ffffff);
  --ui-surface-soft: #f7fcff;
  --ui-accent: var(--cu-primary, #0077b6);
  --ui-accent-strong: #005f92;
  --ui-success: #0f8f57;
  --ui-danger: #c53c3c;
  --ui-shadow-sm: var(--cu-shadow-sm, 0 6px 18px rgba(0, 77, 120, 0.08));
  --ui-shadow-md: var(--cu-shadow-md, 0 10px 28px rgba(0, 77, 120, 0.12));
}

.app-frame {
  color: var(--ui-text);
}

.app-frame a:not(.btn) {
  color: var(--ui-accent);
}

.app-frame a:not(.btn):hover {
  color: var(--ui-accent-strong);
}

.app-frame .form-control,
.app-frame .form-select,
.app-frame .form-control-sm,
.app-frame .form-select-sm {
  border: 1px solid var(--ui-border);
  border-radius: 11px;
  background: var(--ui-surface);
  color: var(--ui-text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.app-frame .form-control::placeholder {
  color: #90a0b7;
}

.app-frame .form-control:focus,
.app-frame .form-select:focus {
  border-color: #7ca9e2;
  box-shadow: 0 0 0 0.16rem rgba(54, 130, 229, 0.18);
  background: #fff;
}

.app-frame label {
  font-weight: 700;
  color: #50627f;
}

.app-frame .btn {
  border-radius: 11px;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: transform 0.16s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.app-frame .btn:hover {
  transform: translateY(-1px);
}

.app-frame .btn:active {
  transform: translateY(0);
}

.app-frame .btn-primary {
  --bs-btn-color: #fff;
  --bs-btn-hover-color: #fff;
  --bs-btn-active-color: #fff;
  --bs-btn-disabled-color: #fff;
  color: #fff;
  background: linear-gradient(145deg, #00b4d8 0%, #0077b6 100%);
  border-color: #006ba1;
  box-shadow: 0 8px 18px rgba(0, 119, 182, 0.28);
}

.app-frame .btn-primary:hover,
.app-frame .btn-primary:focus,
.app-frame .btn-primary:active,
.app-frame .btn-primary.active,
.app-frame .btn-primary.disabled,
.app-frame .btn-primary:disabled {
  color: #fff;
}

.app-frame .btn-primary:hover {
  background: linear-gradient(145deg, #0096c7 0%, #005f92 100%);
  border-color: #005f92;
}

.app-frame .btn-success {
  --bs-btn-color: #fff;
  --bs-btn-hover-color: #fff;
  --bs-btn-active-color: #fff;
  --bs-btn-disabled-color: #fff;
  color: #fff;
  background: linear-gradient(145deg, #1da86a 0%, #138a56 100%);
  border-color: #138a56;
  box-shadow: 0 8px 18px rgba(19, 138, 86, 0.24);
}

.app-frame .btn-success:hover,
.app-frame .btn-success:focus,
.app-frame .btn-success:active,
.app-frame .btn-success.active,
.app-frame .btn-success.disabled,
.app-frame .btn-success:disabled {
  color: #fff;
}

.app-frame .btn-success:hover {
  background: linear-gradient(145deg, #199a61 0%, #11794b 100%);
  border-color: #11794b;
}

.app-frame .btn-outline-secondary {
  border-color: var(--ui-border-strong);
  color: #445974;
  background: #fff;
}

.app-frame .btn-outline-primary {
  border-color: #8db7ea;
  color: #1f5db4;
  background: #f4f9ff;
}

.app-frame .btn-outline-danger {
  border-color: #efb5b5;
  color: #b03232;
  background: #fff8f8;
}

.app-frame .role-content-panel {
  background: linear-gradient(180deg, #ffffff 0%, #fafdff 100%);
  border: 1px solid var(--ui-border);
  box-shadow: var(--ui-shadow-md);
}

.app-frame .flash-message {
  border-radius: 12px;
  font-weight: 600;
  box-shadow: var(--ui-shadow-sm);
}

.app-frame .flash-message.success {
  border-right: 4px solid var(--ui-success);
}

.app-frame .flash-message.error {
  border-right: 4px solid var(--ui-danger);
}

.app-frame .filter-box-collapsible {
  border-color: var(--ui-border);
  background: linear-gradient(180deg, #fbfdff 0%, #f7fbff 100%);
  box-shadow: var(--ui-shadow-sm);
}

.app-frame .filter-box-summary {
  color: #21324e;
}

.app-frame .filter-box-summary:hover {
  background: rgba(40, 95, 167, 0.05);
}

.app-frame .filter-form,
.app-frame .items-section,
.app-frame .classes-list,
.app-frame .teacher-exams-list,
.app-frame .periods-list,
.app-frame .class-students-section,
.app-frame .timetable-form,
.app-frame .exam-questions-form,
.app-frame .exam-summary,
.app-frame .notification-list-component {
  border-color: var(--ui-border);
  background: linear-gradient(180deg, #fcfeff 0%, #f7fbff 100%);
  box-shadow: var(--ui-shadow-sm);
}

.app-frame .items-head h2,
.app-frame .classes-list-head h2,
.app-frame .teacher-exams-list-head h2,
.app-frame .periods-list-head h2,
.app-frame h2 {
  color: #1b2e4d;
}

.app-frame .item-card,
.app-frame .class-item,
.app-frame .exam-item,
.app-frame .question-item,
.app-frame .student-check-item {
  border: 1px solid var(--ui-border);
  box-shadow: 0 6px 16px rgba(24, 46, 73, 0.08);
  transition: transform 0.18s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.app-frame .item-card:hover,
.app-frame .class-item:hover,
.app-frame .exam-item:hover,
.app-frame .question-item:hover,
.app-frame .student-check-item:hover {
  transform: translateY(-2px);
  border-color: #b8cbe3;
  box-shadow: 0 12px 24px rgba(24, 46, 73, 0.13);
}

.app-frame .empty-text {
  color: var(--ui-muted);
}

.app-frame .table {
  border-color: #d8e4f2;
  background: #fff;
}

.app-frame .table > :not(caption) > * > * {
  border-color: #dbe6f3;
}

.app-frame .table thead th {
  background: linear-gradient(180deg, #f7fbff 0%, #edf4fc 100%);
  color: #1d3354;
  font-weight: 800;
}

.app-frame .table tbody tr:hover {
  background: #f7fbff;
}

.app-frame .modal-content {
  border: 1px solid #d7e3f1;
  border-radius: 18px;
  box-shadow: 0 20px 45px rgba(19, 39, 63, 0.2);
}

.app-frame .modal {
  z-index: 2400;
}

.app-frame .modal-backdrop {
  z-index: 2390;
}

.role-content-panel,
.upcoming-page-panel,
.items-section,
.class-items,
.class-item {
  overflow: visible;
}

.app-frame .modal-header {
  border-bottom-color: #dbe6f3;
  background: linear-gradient(180deg, #fbfdff 0%, #f5faff 100%);
}

.app-frame .modal-footer {
  border-top-color: #dbe6f3;
  background: #fbfdff;
}

.app-frame .modal-title {
  color: #1f3251;
}

.app-frame .btn-close {
  border-radius: 8px;
  opacity: 0.72;
  transition: opacity 0.2s ease, background-color 0.2s ease;
}

.app-frame .btn-close:hover {
  opacity: 1;
  background: #eef4fb;
}

.app-frame .jdate-popover {
  border-color: #cfdced;
  box-shadow: 0 16px 34px rgba(18, 40, 65, 0.16);
}

body > .modal {
  z-index: 2400;
}

body > .modal-backdrop {
  z-index: 2390;
}

body > .modal .modal-dialog {
  max-width: min(640px, calc(100vw - 24px));
  margin-right: auto;
  margin-left: auto;
}

body > .modal .modal-content {
  margin-top: 0;
  padding: 0;
  background: #ffffff;
  border: 1px solid #d7e3f1;
  border-radius: 18px;
  box-shadow: 0 20px 45px rgba(19, 39, 63, 0.2);
  overflow: hidden;
}

body > .modal .modal-body {
  max-height: calc(100vh - 180px);
  overflow-y: auto;
}

body > .modal .modal-header {
  border-bottom-color: #dbe6f3;
  background: linear-gradient(180deg, #fbfdff 0%, #f5faff 100%);
}

body > .modal .modal-footer {
  border-top-color: #dbe6f3;
  background: #fbfdff;
}

body > .modal .modal-title {
  color: #1f3251;
}

body > .modal .form-control,
body > .modal .form-select,
body > .modal .form-control-sm,
body > .modal .form-select-sm {
  border: 1px solid var(--ui-border);
  border-radius: 11px;
  background: var(--ui-surface);
  color: var(--ui-text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

body > .modal .form-control::placeholder {
  color: #90a0b7;
}

body > .modal .form-control:focus,
body > .modal .form-select:focus {
  border-color: #7ca9e2;
  box-shadow: 0 0 0 0.16rem rgba(54, 130, 229, 0.18);
  background: #fff;
}

body > .modal label {
  font-weight: 700;
  color: #50627f;
}

body > .modal .btn {
  border-radius: 11px;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: transform 0.16s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

body > .modal .btn:hover {
  transform: translateY(-1px);
}

body > .modal .btn:active {
  transform: translateY(0);
}

body > .modal .btn-primary {
  --bs-btn-color: #fff;
  --bs-btn-hover-color: #fff;
  --bs-btn-active-color: #fff;
  --bs-btn-disabled-color: #fff;
  color: #fff;
  background: linear-gradient(145deg, #00b4d8 0%, #0077b6 100%);
  border-color: #006ba1;
  box-shadow: 0 8px 18px rgba(0, 119, 182, 0.28);
}

body > .modal .btn-primary:hover,
body > .modal .btn-primary:focus,
body > .modal .btn-primary:active {
  color: #fff;
}

body > .modal .btn-primary:hover {
  background: linear-gradient(145deg, #0096c7 0%, #005f92 100%);
  border-color: #005f92;
}

body > .modal .btn-outline-secondary {
  border-color: var(--ui-border-strong);
  color: #445974;
  background: #fff;
}

body > .modal .btn-close {
  border-radius: 8px;
  opacity: 0.72;
  transition: opacity 0.2s ease, background-color 0.2s ease;
}

body > .modal .btn-close:hover {
  opacity: 1;
  background: #eef4fb;
}

.modal-header-left-close {
  direction: ltr;
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-header-left-close .modal-title {
  direction: rtl;
  text-align: right;
  flex: 1;
  margin: 0;
}

.modal-header-left-close .btn-close {
  order: -1;
  margin: 0;
  flex: 0 0 auto;
  border-radius: 8px;
  opacity: 0.72;
  transition: opacity 0.2s ease, background-color 0.2s ease;
}

.modal-header-left-close .btn-close:hover,
.modal-header-left-close .btn-close:focus {
  opacity: 1;
  background: #eef4fb;
  box-shadow: none;
}

.question-image {
  max-width: 100%;
  max-height: 220px;
  border-radius: 10px;
  border: 1px solid #dbe7f3;
  margin-top: 8px;
  display: block;
}

.scrollable-select-wrap {
  position: relative;
  width: 100%;
}

.scrollable-select-native {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
  padding: 0;
  margin: 0;
}

.scrollable-select-trigger {
  display: block;
  width: 100%;
  text-align: right;
  cursor: pointer;
}

.scrollable-select-trigger:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.scrollable-select-wrap.is-open .scrollable-select-trigger {
  border-color: #7ca9e2;
  box-shadow: 0 0 0 0.16rem rgba(54, 130, 229, 0.18);
}

.scrollable-select-panel {
  z-index: 2600;
  background: #fff;
  border: 1px solid #d7e3f1;
  border-radius: 12px;
  box-shadow: 0 16px 34px rgba(18, 40, 65, 0.16);
  padding: 8px;
}

.scrollable-select-panel[data-open-above="true"] {
  box-shadow: 0 -12px 28px rgba(18, 40, 65, 0.14);
}

.scrollable-select-search {
  margin-bottom: 8px;
}

.scrollable-select-list {
  max-height: min(280px, 50vh);
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  display: grid;
  gap: 4px;
}

.scrollable-select-option {
  width: 100%;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #1f2a3a;
  text-align: right;
  padding: 8px 10px;
  font-size: 0.88rem;
  line-height: 1.45;
}

.scrollable-select-option:hover,
.scrollable-select-option:focus {
  background: #eef4ff;
  color: #1f3251;
}

.scrollable-select-option.is-selected {
  background: #e7f1ff;
  color: #1f5db4;
  font-weight: 700;
}

.scrollable-select-empty {
  padding: 10px;
  text-align: center;
  color: #6d7d92;
  font-size: 0.85rem;
}

.question-item-content {
  display: grid;
  gap: 4px;
}