* {
  box-sizing: border-box;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

*::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

body {
  margin: 0;
  font-family: system-ui, Segoe UI, sans-serif;
  background: #f0f4f8;
  color: #1a1a2e;
  line-height: 1.5;
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 1.5rem;
}

.head h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
}

.hint {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  color: #555;
}

.timer-sticky {
  position: sticky;
  top: 0;
  z-index: 100;
  margin: 0 0 1rem;
  padding: 0.5rem 0 0.65rem;
  background: #f0f4f8;
  box-shadow: 0 4px 14px -6px rgba(26, 26, 46, 0.15);
}

.timer {
  padding: 0.6rem 0.9rem;
  background: #fff;
  border-radius: 8px;
  border: 1px solid #c5d4e0;
  font-size: 0.95rem;
}

.timer.warning {
  border-color: #e6a23c;
  background: #fff8e6;
}

.timer.danger {
  border-color: #f56c6c;
  background: #fff0f0;
}

.quiz-finished #quiz {
  pointer-events: none;
  opacity: 0.72;
  user-select: none;
}

.quiz-finished .options label {
  cursor: default;
}

.result-time-up {
  margin: 0.5rem 0 0.75rem;
  padding: 0.55rem 0.75rem;
  background: #fff1f2;
  border: 1px solid #fecdd3;
  border-radius: 8px;
  color: #9f1239;
  font-size: 0.95rem;
}

.card {
  background: #fff;
  border-radius: 10px;
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
  border: 1px solid #d8e2ec;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
}

.options label {
  display: block;
  margin: 0.35rem 0;
  cursor: pointer;
}

select {
  width: 100%;
  max-width: 100%;
  padding: 0.45rem 0.5rem;
  border-radius: 6px;
  border: 1px solid #b8c5d4;
  font-size: 1rem;
}

input[type="text"] {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border-radius: 6px;
  border: 1px solid #b8c5d4;
  font-size: 1rem;
}

.foot {
  margin-top: 1rem;
}

#check-btn {
  padding: 0.65rem 1.25rem;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  background: #2563eb;
  color: #fff;
  cursor: pointer;
}

#check-btn:hover {
  background: #1d4ed8;
}

#check-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.blocked {
  margin-top: 0.75rem;
  color: #b45309;
  font-size: 0.9rem;
}

.result {
  margin-top: 1.5rem;
  padding: 1rem 1.1rem;
  border-radius: 10px;
  background: #ecfdf5;
  border: 1px solid #6ee7b7;
}

.result h2 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.result ul {
  margin: 0;
  padding-left: 1.2rem;
}

.result-list li {
  margin-bottom: 0.5rem;
}

.correct-ans {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.9rem;
  color: #047857;
}

.wrap-wide {
  max-width: 900px;
}

.top-nav {
  margin-top: 0.75rem;
  margin-bottom: 1.25rem;
}

.admin-panel-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  width: 100%;
  padding: 1rem 1.1rem;
  background: #fff;
  border-radius: 10px;
  border: 1px solid #d8e2ec;
  text-decoration: none;
  color: #1a1a2e !important;
  font-size: 0.95rem;
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.admin-panel-link:hover {
  border-color: #93c5fd;
  box-shadow: 0 4px 14px -6px rgba(37, 99, 235, 0.25);
}

.admin-panel-link:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

.admin-panel-icon {
  display: flex;
  flex-shrink: 0;
  color: #2563eb;
}

.admin-panel-icon svg {
  display: block;
}

.back {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
}

.back a {
  color: #2563eb;
}

.note {
  padding: 0.65rem 0.85rem;
  background: #fffbeb;
  border: 1px solid #fcd34d;
  border-radius: 8px;
  font-size: 0.88rem;
  margin-bottom: 1rem;
}

.note code {
  font-size: 0.85em;
}

.muted {
  color: #64748b;
  font-size: 0.9rem;
}

.test-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.test-card {
  display: block;
  padding: 1rem 1.1rem;
  background: #fff;
  border-radius: 10px;
  border: 1px solid #d8e2ec;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.test-card:hover {
  border-color: #93c5fd;
  box-shadow: 0 4px 14px -6px rgba(37, 99, 235, 0.25);
}

.test-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.test-card-title {
  font-weight: 600;
}

.test-card-meta {
  font-size: 0.85rem;
  color: #64748b;
}

.test-card-desc {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  color: #475569;
}

.head-admin {
  margin-bottom: 1rem;
}

.admin-header-card {
  padding: 0;
  overflow: hidden;
  margin-bottom: 0;
}

.admin-back-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.1rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  color: #2563eb;
  border-bottom: 1px solid #e8eef4;
  transition:
    background 0.15s,
    color 0.15s;
}

.admin-back-row:hover {
  background: #f8fafc;
  color: #1d4ed8;
}

.admin-back-row:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: -2px;
  z-index: 1;
  position: relative;
}

.admin-back-icon {
  display: flex;
  color: #2563eb;
}

.admin-back-row:hover .admin-back-icon {
  color: #1d4ed8;
}

.admin-back-icon svg {
  display: block;
}

.admin-title-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 1rem 1.1rem 1.05rem;
}

.admin-header-gear {
  display: flex;
  flex-shrink: 0;
  color: #2563eb;
}

.admin-header-gear svg {
  display: block;
}

.admin-header-title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 600;
  color: #1a1a2e;
  line-height: 1.25;
}

.admin-login-panel {
  border-top: 1px solid #e8eef4;
  padding: 1rem 1.1rem 1.15rem;
}

.admin-login-hint {
  margin: 0 0 1rem;
}

.admin-login-title-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
}

.admin-login-title-row h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: #1a1a2e;
}

.admin-login-icon {
  display: flex;
  flex-shrink: 0;
  color: #2563eb;
}

.admin-login-icon svg {
  display: block;
}

.login-field {
  display: block;
  text-align: left;
  margin: 0;
}

.login-field-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: #475569;
  margin-bottom: 0.4rem;
}

.login-input {
  display: block;
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid #b8c5d4;
  font-size: 1rem;
  background: #fff;
  color: #1a1a2e;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.login-input:hover {
  border-color: #94a3b8;
}

.login-input:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn-login-wide {
  width: 100%;
  margin-top: 1.1rem;
  padding: 0.7rem 1.25rem;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  background: #2563eb;
  color: #fff;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.15s;
}

.btn-login-wide:hover {
  background: #1d4ed8;
}

.btn-login-wide:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

.login-footnote {
  margin: 1rem 0 0;
  font-size: 0.82rem;
  line-height: 1.45;
  text-align: left;
  color: #64748b;
}

.login-footnote code {
  font-size: 0.78em;
  padding: 0.1em 0.35em;
  background: #f1f5f9;
  border-radius: 4px;
  border: 1px solid #e2e8f0;
}

.admin-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tab {
  padding: 0.45rem 0.9rem;
  border: 1px solid #cbd5e1;
  background: #fff;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
}

.tab-active {
  background: #1e293b;
  color: #fff;
  border-color: #1e293b;
}

.btn-primary,
.btn-ghost,
.btn-danger {
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: #2563eb;
  color: #fff;
  border-color: #2563eb;
}

.btn-primary:hover {
  background: #1d4ed8;
}

.btn-ghost {
  background: #fff;
  border-color: #cbd5e1;
}

.btn-danger {
  background: #fef2f2;
  color: #b91c1c;
  border-color: #fecaca;
}

.admin-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.75rem 0 1rem;
}

.admin-bar-tests-row {
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.admin-bar-tests-row .admin-tests-search {
  flex: 1;
  min-width: 0;
}

.admin-bar-tests-row .admin-tests-search .filter-search-input {
  max-width: none;
  width: 100%;
}

.admin-bar-tests-actions {
  display: flex;
  flex-shrink: 0;
  align-items: flex-end;
  gap: 0.5rem;
}

.admin-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.admin-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.65rem 0.75rem;
  background: #f8fafc;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
}

.admin-actions {
  display: flex;
  gap: 0.35rem;
}

.admin-actions button {
  padding: 0.35rem 0.65rem;
  font-size: 0.88rem;
  border-radius: 6px;
  border: 1px solid #cbd5e1;
  background: #fff;
  cursor: pointer;
}

.editor-hint-show-answers {
  margin: -0.35rem 0 0.85rem;
  font-size: 0.85rem;
  line-height: 1.4;
}

.editor-card textarea {
  width: 100%;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.82rem;
  padding: 0.5rem;
  border-radius: 6px;
  border: 1px solid #b8c5d4;
  resize: vertical;
}

.block-label {
  display: block;
  margin: 0.65rem 0;
  font-size: 0.9rem;
}

.block-label input[type='text'],
.block-label input[type='number'] {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.45rem 0.55rem;
  border-radius: 6px;
  border: 1px solid #b8c5d4;
}

.form-msg {
  min-height: 1.25rem;
  color: #b45309;
  font-size: 0.9rem;
}

.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table th,
.data-table td {
  border: 1px solid #e2e8f0;
  padding: 0.45rem 0.55rem;
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background: #f1f5f9;
}

.linkish {
  background: none;
  border: none;
  color: #2563eb;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
  font: inherit;
}

.result-row-actions {
  white-space: nowrap;
  vertical-align: middle;
}

.result-btn-delete {
  color: #b91c1c;
}

.result-btn-delete:hover {
  color: #991b1b;
}

.gf-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0 0.35rem;
}

.gf-section-title {
  font-weight: 600;
}

.gf-hint {
  margin: 0 0 0.75rem;
}

.questions-editor {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.gf-q {
  background: #fafbfc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 1rem 1.1rem;
}

.gf-q-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.gf-q-num {
  font-weight: 600;
}

.gf-q-actions {
  display: flex;
  gap: 0.35rem;
  align-items: center;
}

.gf-q-up,
.gf-q-down {
  min-width: 2.25rem;
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  border: 1px solid #cbd5e1;
  background: #fff;
  cursor: pointer;
  font-size: 0.95rem;
}

.gf-label {
  display: block;
  margin: 0.65rem 0;
  font-size: 0.9rem;
}

.gf-label select,
.gf-label textarea,
.gf-label input[type='text'] {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.45rem 0.55rem;
  border-radius: 6px;
  border: 1px solid #b8c5d4;
  font-size: 0.95rem;
}

.gf-q-options-hint {
  margin: 0.35rem 0 0.5rem;
  font-size: 0.85rem;
}

.gf-opt-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.45rem;
}

.gf-opt-mark {
  flex: 0 0 auto;
  width: 1.75rem;
  display: flex;
  justify-content: center;
}

.gf-opt-label {
  flex: 1;
  min-width: 0;
  padding: 0.4rem 0.55rem;
  border-radius: 6px;
  border: 1px solid #b8c5d4;
  font-size: 0.95rem;
}

.gf-opt-remove {
  flex: 0 0 auto;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 6px;
  border: 1px solid #e2e8f0;
  background: #fff;
  cursor: pointer;
  font-size: 1.15rem;
  line-height: 1;
  color: #64748b;
}

.gf-opt-remove:hover {
  background: #fef2f2;
  color: #b91c1c;
  border-color: #fecaca;
}

.gf-add-opt {
  margin-top: 0.35rem;
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.88rem;
}

.btn-xs {
  padding: 0.3rem 0.55rem;
  font-size: 0.8rem;
}

.intro-card {
  margin-bottom: 1rem;
}

.intro-title {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
}

.intro-lead {
  margin: 0 0 1rem;
}

.intro-fields {
  max-width: 420px;
}

.intro-card .btn-primary {
  margin-top: 0.5rem;
}

.student-badge {
  margin: 0 0 0.75rem;
  padding: 0.5rem 0.75rem;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  font-size: 0.9rem;
  color: #1e3a5f;
}

.result-student {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  color: #334155;
}

.result-time-left {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  color: #334155;
}

.result-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  overflow-y: auto;
  background: rgba(15, 23, 42, 0.5);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

.result-modal-overlay[hidden] {
  display: none !important;
}

.result-modal {
  width: 100%;
  max-width: 520px;
  max-height: min(88vh, 680px);
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.18);
}

.result-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid #e2e8f0;
  flex-shrink: 0;
}

.result-modal-head h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: #0f172a;
}

.result-modal-close {
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  border: none;
  border-radius: 8px;
  background: #f1f5f9;
  color: #475569;
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.result-modal-close:hover {
  background: #e2e8f0;
  color: #0f172a;
}

.result-modal-body {
  padding: 1rem 1.1rem 1.15rem;
  overflow-y: auto;
  font-size: 0.92rem;
  line-height: 1.45;
}

.result-modal-meta {
  margin: 0 0 0.5rem;
}

.result-modal-meta:last-of-type {
  margin-bottom: 0.75rem;
}

.result-modal-timeup {
  margin: 0 0 0.75rem;
  padding: 0.45rem 0.65rem;
  font-size: 0.88rem;
  background: #fff1f2;
  border: 1px solid #fecdd3;
  border-radius: 8px;
  color: #9f1239;
}

.result-modal-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.result-modal-item {
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  background: #f8fafc;
}

.result-modal-item--ok {
  border-color: #bbf7d0;
  background: #f0fdf4;
}

.result-modal-item--bad {
  border-color: #fecaca;
  background: #fef2f2;
}

.result-modal-item-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem;
  margin-bottom: 0.35rem;
}

.result-modal-qnum {
  font-weight: 600;
  color: #1e293b;
}

.result-modal-badge {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
}

.result-modal-item--ok .result-modal-badge {
  background: #dcfce7;
  color: #166534;
}

.result-modal-item--bad .result-modal-badge {
  background: #fee2e2;
  color: #b91c1c;
}

.result-modal-correct {
  font-size: 0.88rem;
  color: #475569;
}

.results-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.results-toolbar .results-filters {
  flex: 1;
  min-width: 0;
  margin-bottom: 0;
}

.results-toolbar-actions {
  display: flex;
  flex-shrink: 0;
  align-items: flex-end;
}

.results-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
  margin-bottom: 0.75rem;
}

.filter-label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.88rem;
  color: #475569;
}

.filter-select,
.filter-search-input {
  min-width: 200px;
  padding: 0.45rem 0.55rem;
  border-radius: 6px;
  border: 1px solid #b8c5d4;
  font-size: 0.95rem;
}

.filter-search {
  flex: 1;
  min-width: 220px;
}

.filter-search-input {
  width: 100%;
  max-width: 360px;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  cursor: pointer;
  font-weight: normal;
}

.checkbox-label input[type='checkbox'] {
  margin-top: 0.25rem;
  flex-shrink: 0;
}

.badge-open,
.badge-closed {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  vertical-align: middle;
}

.badge-open {
  background: #d1fae5;
  color: #065f46;
}

.badge-closed {
  background: #fee2e2;
  color: #991b1b;
}