@font-face {
  font-family: Vazirmatn;
  src: url("assets/arabic.woff2") format("woff2");
  font-display: swap;
  font-weight: 100 900;
}
:root {
  --bg: #f2f4f6;
  --surface: #fff;
  --ink: #252a30;
  --muted: #606973;
  --line: #d9dfe5;
  --green: #0f6cbf;
  --green-dark: #084d8b;
  --mint: #e9f2fa;
  --accent: #d9e8f4;
  --question: #eaf3f6;
  --red: #a52c39;
  --red-bg: #fcecef;
  --amber: #77530f;
  --amber-bg: #fff8e5;
  --success: #276a40;
  --success-bg: #e8f4eb;
  color-scheme: light;
  font-family: Vazirmatn, "Geeza Pro", Tahoma, Arial, sans-serif;
  font-size: 14px;
}
:root[data-theme="dark"] {
  --bg: #161b21;
  --surface: #20262e;
  --ink: #e5e9ee;
  --muted: #aeb8c4;
  --line: #3c4652;
  --green: #82bbef;
  --green-dark: #afd4f7;
  --mint: #293e52;
  --accent: #36516b;
  --question: #23343e;
  --red: #ffb0ba;
  --red-bg: #45262e;
  --amber: #edcc88;
  --amber-bg: #3c3424;
  --success: #a1d6ad;
  --success-bg: #243d2e;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.8;
}
button,
input,
select,
textarea {
  font: inherit;
}
button,
a {
  touch-action: manipulation;
}
button {
  cursor: pointer;
}
a {
  color: var(--green);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
:focus-visible {
  outline: 3px solid #e4aa2c;
  outline-offset: 3px;
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1 {
  font-size: 27px;
  line-height: 1.6;
  font-weight: 650;
}
h2 {
  font-size: 19px;
  font-weight: 650;
}
h3 {
  font-size: 16px;
}
small {
  font-size: 12px;
}
svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.topbar {
  position: fixed;
  inset: 0 0 auto;
  height: 65px;
  border-top: 4px solid var(--green);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 0 25px;
  z-index: 30;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 24px;
  font-weight: 750;
  white-space: nowrap;
}
.brand:hover {
  text-decoration: none;
}
.brand small {
  font-size: 12px;
  font-weight: 400;
  margin-inline-start: 10px;
  color: var(--muted);
}
.brand-icon {
  color: var(--green);
  display: grid;
  place-items: center;
}
.brand-icon svg {
  width: 29px;
  height: 29px;
}
.top-link {
  font-size: 14px;
  color: var(--muted);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-inline-start: auto;
}
.save-status {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 12px;
}
.save-status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  min-height: 36px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: 4px;
}
.icon-button:hover {
  background: var(--bg);
}
.icon-button[aria-pressed="true"] {
  background: var(--mint);
  border-color: var(--green);
  color: var(--green);
}
.icon-button svg {
  width: 18px;
  height: 18px;
}
.index-toggle {
  display: none;
}
.sidebar {
  position: fixed;
  inset: 65px 0 0 auto;
  width: 244px;
  background: var(--surface);
  border-inline-end: 1px solid var(--line);
  padding: 22px 14px;
  overflow-y: auto;
  z-index: 25;
}
.sidebar-label {
  font-size: 15px;
  font-weight: 650;
  padding: 0 12px 16px;
  color: var(--ink);
}
#nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
#nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  font-size: 13px;
  color: var(--ink);
  border-inline-start: 3px solid transparent;
  border-radius: 3px;
}
#nav a:hover {
  background: var(--bg);
  text-decoration: none;
}
#nav a.active {
  background: var(--mint);
  border-inline-start-color: var(--green);
  color: var(--green);
  font-weight: 600;
}
#nav svg {
  width: 18px;
  height: 18px;
  color: var(--muted);
}
#nav .count {
  margin-inline-start: auto;
  color: var(--muted);
  font-size: 11px;
  padding: 0 5px;
  border: 1px solid var(--line);
  border-radius: 3px;
}
.index-topics {
  border-top: 1px solid var(--line);
  margin-top: 22px;
  padding: 15px 10px;
}
.index-topics summary {
  font-size: 13px;
}
.index-topics a {
  display: block;
  font-size: 12px;
  color: var(--muted);
  padding: 8px 10px;
  border-inline-start: 1px solid var(--line);
  margin-inline-start: 5px;
}
.index-topics a:hover {
  color: var(--green);
}
.sidebar-bottom {
  padding: 20px 12px 0;
  color: var(--muted);
  font-size: 12px;
}
.sidebar-bottom small {
  font-size: 11px;
}
.app-shell {
  margin: 65px 244px 0 0;
}
.breadcrumb {
  display: flex;
  gap: 11px;
  align-items: center;
  padding: 23px 32px 0;
  font-size: 12px;
  color: var(--muted);
  max-width: 1440px;
  margin: auto;
}
.breadcrumb b {
  font-weight: 400;
  color: var(--ink);
}
main {
  max-width: 1440px;
  margin: auto;
  padding: 19px 32px 45px;
  min-height: calc(100vh - 165px);
}
.page-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 20px;
}
.page-heading p,
.description {
  color: var(--muted);
  font-size: 13px;
  margin-top: 7px;
}
.eyebrow {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}
.course-tabs {
  display: flex;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
  overflow-x: auto;
  white-space: nowrap;
}
.course-tabs a {
  padding: 10px 3px 12px;
  color: var(--muted);
  font-size: 14px;
  border-bottom: 3px solid transparent;
}
.course-tabs a[aria-current] {
  color: var(--green);
  border-bottom-color: var(--green);
}
.course-tabs a:hover {
  text-decoration: none;
  color: var(--green);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line);
  padding: 8px 15px;
  border-radius: 4px;
  background: var(--surface);
  color: var(--ink);
  font-size: 13px;
  min-height: 40px;
  font-weight: 500;
}
.btn:hover {
  background: var(--bg);
  text-decoration: none;
}
.btn.primary {
  background: #0f6cbf;
  color: #fff;
  border-color: #0f6cbf;
}
.btn.primary:hover {
  background: #0b579b;
}
.btn.text {
  color: var(--green);
  background: transparent;
  border-color: transparent;
  padding-inline: 0;
  min-height: 32px;
}
.btn.text:hover {
  text-decoration: underline;
}
.btn.danger {
  color: var(--red);
  border-color: var(--red);
}
.btn svg {
  width: 17px;
  height: 17px;
}
.button-row {
  display: flex;
  gap: 9px;
  flex-wrap: wrap;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 24px;
}
.card + .card {
  margin-top: 18px;
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 15px;
}
.columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 285px;
  gap: 24px;
  align-items: start;
}
.course-content {
  min-width: 0;
}
.course-section {
  padding: 25px 28px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface);
  margin-bottom: 20px;
}
.course-section > h2 {
  margin-bottom: 15px;
}
.course-intro {
  font-size: 14px;
  max-width: 760px;
  color: var(--ink);
}
.course-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 22px;
  margin: 14px 0 22px;
  font-size: 12px;
  color: var(--muted);
}
.course-facts span + span {
  position: relative;
}
.course-facts span + span:before {
  content: "·";
  position: absolute;
  right: -13px;
}
.document-activity {
  display: flex;
  gap: 13px;
  align-items: center;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  font-size: 14px;
}
.document-activity > svg:first-child {
  color: #b56525;
}
.document-activity span {
  flex: 1;
}
.document-activity small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 3px;
}
.document-activity > svg:last-child {
  width: 15px;
}
.activity-row {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 21px 0;
  border-bottom: 1px solid var(--line);
}
.activity-row:last-child {
  border: 0;
  padding-bottom: 2px;
}
.activity-row:first-child {
  padding-top: 5px;
}
.activity-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: #8663a6;
  color: #fff;
  border-radius: 4px;
  flex-shrink: 0;
}
.activity-copy {
  flex: 1;
  min-width: 0;
}
.activity-title {
  padding: 0;
  background: none;
  border: 0;
  color: var(--green);
  font-size: 16px;
  text-align: start;
  line-height: 1.7;
}
.activity-title:hover {
  text-decoration: underline;
}
.activity-copy p {
  font-size: 13px;
  color: var(--muted);
  margin: 4px 0;
}
.activity-copy small {
  font-size: 11px;
  color: var(--muted);
}
.activity-row > .icon-button {
  border: 0;
  margin-top: 4px;
}
.course-block {
  padding: 20px;
}
.course-block h2 {
  font-size: 16px;
}
.course-block .inline-link {
  display: inline-block;
  margin-top: 10px;
}
.course-block p {
  font-size: 13px;
}
.progress-facts {
  margin: 15px 0 0;
}
.progress-facts > div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
  font-size: 12px;
}
.progress-facts dt {
  color: var(--muted);
}
.progress-facts dd {
  margin: 0;
  font-weight: 600;
}
.block-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  margin-top: 18px;
}
.goal-done {
  margin: 15px 0 10px;
}
.progress {
  height: 6px;
  overflow: hidden;
  background: var(--line);
  border-radius: 2px;
}
.progress span {
  display: block;
  height: 100%;
  background: var(--green);
}
.resume-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  padding: 20px 25px;
  margin-bottom: 20px;
  border: 1px solid var(--green);
  background: var(--mint);
  border-radius: 4px;
}
.resume-row p {
  font-size: 12px;
  color: var(--muted);
}
.topic-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}
.topic-row:last-child {
  border: 0;
}
.topic-name {
  flex: 1;
  font-size: 14px;
}
.topic-row small {
  color: var(--muted);
  font-size: 12px;
}
.topic-row .progress {
  width: 65px;
}
.topic-row .btn {
  font-size: 12px;
}
.topic-dot {
  width: 6px;
  height: 6px;
  background: var(--muted);
  border-radius: 50%;
  flex-shrink: 0;
}
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  background: var(--surface);
  margin-bottom: 24px;
}
.stat {
  padding: 20px;
  display: flex;
  gap: 15px;
  align-items: center;
  border-inline-end: 1px solid var(--line);
}
.stat:last-child {
  border: 0;
}
.stat-icon {
  color: var(--muted);
}
.stat-value {
  font-size: 26px;
  font-weight: 650;
}
.stat-label {
  font-size: 12px;
  color: var(--muted);
}
.source-notice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 12px;
  padding: 14px 17px;
  border-inline-start: 3px solid var(--amber);
  background: var(--amber-bg);
  color: var(--amber);
  margin: 20px 0;
}
.source-notice svg {
  width: 18px;
  margin-top: 3px;
}
.source-notice a {
  text-decoration: underline;
}
.empty {
  text-align: center;
  padding: 35px 20px;
}
.empty-icon {
  color: var(--muted);
  margin-bottom: 12px;
}
.empty-icon svg {
  width: 32px;
  height: 32px;
}
.empty p {
  font-size: 13px;
  color: var(--muted);
  max-width: 480px;
  margin: 8px auto 17px;
}
.filters {
  display: flex;
  align-items: end;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 160px;
  flex: 1;
}
.field label,
.field-label {
  font-size: 12px;
  color: var(--muted);
}
input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface);
  color: var(--ink);
  padding: 9px 12px;
  min-height: 42px;
  font-size: 13px;
}
input[type="checkbox"],
input[type="radio"] {
  width: 17px;
  height: 17px;
  min-height: 0;
  accent-color: #0f6cbf;
  flex-shrink: 0;
}
textarea {
  resize: vertical;
  min-height: 100px;
}
.radio-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
  margin: 18px 0 24px;
}
.radio-card {
  display: flex;
  align-items: center;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 11px;
  cursor: pointer;
  font-size: 12px;
}
.radio-card:has(input:checked) {
  border-color: var(--green);
  background: var(--mint);
}
.setup-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(230px, 1fr);
  gap: 24px;
}
.notice {
  background: var(--amber-bg);
  border: 1px solid var(--line);
  padding: 14px 18px;
  font-size: 13px;
  color: var(--amber);
  margin: 16px 0;
}
.muted {
  color: var(--muted);
}
.fine {
  font-size: 12px;
}
.stack {
  display: flex;
  flex-direction: column;
  gap: 15px;
}
.library-card {
  margin-bottom: 14px;
}
.question-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 15px;
}
.tag {
  display: inline-block;
  padding: 2px 7px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--mint);
  color: var(--green);
  font-size: 11px;
}
.tag.warn {
  background: var(--amber-bg);
  color: var(--amber);
}
.question-text {
  font-size: var(--question-size, 18px);
  line-height: 1.9;
  unicode-bidi: plaintext;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-weight: 500;
}
.question-options {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: 24px;
}
.option {
  display: flex;
  gap: 13px;
  align-items: center;
  border: 1px solid transparent;
  border-radius: 3px;
  background: transparent;
  padding: 11px 12px;
  text-align: start;
  color: var(--ink);
  min-height: 54px;
  font-size: var(--question-size, 18px);
}
.option .letter {
  border: 1px solid #84919a;
  background: var(--surface);
  min-width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border-radius: 50%;
  font-size: 12px;
}
.option-text {
  unicode-bidi: plaintext;
  flex: 1;
  overflow-wrap: anywhere;
}
.option:hover {
  background: var(--surface);
  border-color: var(--line);
}
.option.selected {
  border-color: var(--green);
  background: var(--surface);
}
.option.selected .letter {
  background: #0f6cbf;
  color: #fff;
  border-color: #0f6cbf;
}
.option.correct {
  border-color: var(--success);
  background: var(--success-bg);
}
.option.incorrect {
  border-color: var(--red);
  background: var(--red-bg);
}
.option:disabled {
  opacity: 1;
  cursor: default;
}
.feedback {
  margin-top: 22px;
  border: 1px solid var(--success);
  border-radius: 3px;
  padding: 16px;
  background: var(--success-bg);
  font-size: 14px;
}
.feedback.wrong {
  background: var(--red-bg);
  border-color: var(--red);
}
.feedback p {
  font-size: 12px;
  margin-top: 7px;
  unicode-bidi: plaintext;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.quiz-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 235px;
  gap: 24px;
  align-items: start;
}
.question-shell {
  display: grid;
  grid-template-columns: 125px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}
.question-info {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 15px 12px;
  font-size: 12px;
}
.question-info h2 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 13px;
}
.question-info p {
  font-size: 11px;
  margin: 6px 0;
}
.flag-link {
  display: flex;
  align-items: center;
  gap: 7px;
  background: none;
  border: 0;
  color: var(--muted);
  padding: 10px 0 0;
  font-size: 11px;
  text-align: start;
}
.flag-link svg {
  width: 15px;
}
.flag-link[aria-pressed="true"] {
  color: var(--red);
}
.question-content {
  background: var(--question);
  border: 1px solid color-mix(in srgb, var(--line) 70%, var(--question));
  border-radius: 3px;
  padding: 24px;
  min-width: 0;
}
.quiz-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 20px;
}
.tools {
  display: flex;
  gap: 5px;
}
.quiz-toolbar .icon-button {
  background: var(--surface);
  min-width: 32px;
  min-height: 32px;
  font-size: 12px;
}
.question-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.question-actions > div {
  display: flex;
  gap: 9px;
}
.timer {
  font-size: 26px;
  font-weight: 650;
  direction: ltr;
  text-align: center;
  font-variant-numeric: tabular-nums;
}
.timer-label {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
}
.quiz-side {
  position: sticky;
  top: 85px;
}
.quiz-side .card {
  padding: 18px;
}
.quiz-side h3 {
  font-size: 15px;
}
.quiz-side p {
  font-size: 11px;
  color: var(--muted);
  margin-top: 17px;
}
.quiz-side .btn {
  width: 100%;
  margin-top: 15px;
}
.question-map {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-top: 20px;
  max-height: 430px;
  overflow-y: auto;
  padding: 3px;
}
.question-map button {
  border: 1px solid #87949e;
  background: var(--surface);
  color: var(--ink);
  border-radius: 3px;
  aspect-ratio: 1;
  font-size: 12px;
  position: relative;
  min-height: 30px;
}
.question-map button.answered {
  background: linear-gradient(to top, var(--line) 45%, var(--surface) 45%);
}
.question-map button.current {
  outline: 2px solid var(--green);
  outline-offset: 1px;
}
.question-map button.flagged:after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-top: 10px solid #cb3349;
  border-left: 10px solid transparent;
}
.library-options {
  display: grid;
  gap: 6px;
  margin: 15px 0;
  font-size: 14px;
}
.library-options > div {
  padding: 8px 12px;
  border-radius: 3px;
  background: var(--bg);
  unicode-bidi: plaintext;
}
.library-options > div.key {
  background: var(--success-bg);
  color: var(--success);
}
.library-actions {
  display: flex;
  gap: 15px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 12px;
}
.library-source {
  font-size: 11px;
  color: var(--muted);
  margin-top: 18px;
  overflow-wrap: anywhere;
}
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin: 23px 0;
}
.results-hero {
  text-align: center;
  padding: 30px;
}
.score {
  font-size: 54px;
  font-weight: 650;
  color: var(--green);
}
.results-hero p {
  font-size: 13px;
  color: var(--muted);
}
.results-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(250px, 1fr);
  gap: 24px;
}
.steps {
  counter-reset: steps;
}
.step {
  position: relative;
  padding: 0 43px 25px 0;
}
.step:before {
  counter-increment: steps;
  content: counter(steps);
  position: absolute;
  right: 0;
  top: 0;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 3px;
  display: grid;
  place-items: center;
  font-size: 13px;
  color: var(--green);
}
.step h3 {
  font-size: 16px;
  margin-bottom: 7px;
}
.step p,
.step li {
  font-size: 13px;
  color: var(--muted);
}
.step ul {
  padding-inline-start: 18px;
  margin: 8px 0;
}
.inline-link {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.inline-link svg {
  width: 14px;
  height: 14px;
  vertical-align: middle;
}
details {
  border-bottom: 1px solid var(--line);
  padding: 15px 0;
  font-size: 13px;
}
details:last-child {
  border-bottom: 0;
}
summary {
  cursor: pointer;
  font-weight: 500;
}
details p {
  margin-top: 10px;
  color: var(--muted);
}
.check-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  cursor: pointer;
}
.check-item input {
  margin-top: 4px;
}
.check-item:has(input:checked) span {
  color: var(--muted);
  text-decoration: line-through;
}
.resources-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.resource {
  display: flex;
  flex-direction: column;
}
.resource-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 17px;
}
.resource-owner {
  font-family: Arial, sans-serif;
  font-size: 19px;
  font-weight: 600;
  color: var(--muted);
}
.resource p {
  font-size: 13px;
  color: var(--muted);
  margin: 10px 0 18px;
}
.resource .btn {
  margin-top: auto;
  align-self: flex-start;
}
.history-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 12px;
  font-size: 13px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
}
.history-row.head {
  color: var(--muted);
  font-size: 12px;
}
.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.settings-grid .card {
  margin: 0;
}
.settings-grid p {
  font-size: 13px;
  color: var(--muted);
  margin: 10px 0 20px;
}
.file-input {
  display: none;
}
footer {
  display: flex;
  gap: 15px;
  padding: 20px 32px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}
footer a {
  margin-inline-start: auto;
  color: var(--muted);
}
dialog {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 28px;
  background: var(--surface);
  color: var(--ink);
  width: min(94%, 540px);
  max-height: 85vh;
  box-shadow: 0 12px 55px #0003;
}
dialog::backdrop {
  background: #17243288;
}
dialog h2 {
  font-size: 20px;
}
dialog p {
  font-size: 13px;
  color: var(--muted);
  margin: 14px 0 20px;
}
dialog .button-row {
  margin-top: 22px;
}
#toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 12px 23px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--ink);
  color: var(--surface);
  font-size: 13px;
  z-index: 100;
  opacity: 0;
  transition: 0.15s;
  max-width: 90%;
}
#toast.show {
  transform: translateX(-50%);
  opacity: 1;
}
.skip {
  position: fixed;
  top: -100px;
  right: 20px;
  padding: 10px;
  background: var(--surface);
  z-index: 200;
}
.skip:focus {
  top: 10px;
}
.hidden {
  display: none !important;
}
.divider {
  height: 1px;
  background: var(--line);
  margin: 24px 0;
}
.note-area {
  margin-top: 20px;
}
.note-area textarea {
  margin-top: 8px;
}
kbd {
  font: inherit;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 0 5px;
  font-size: 11px;
}
.source-file {
  direction: ltr;
  unicode-bidi: isolate;
  display: inline-block;
  overflow-wrap: anywhere;
}
.loading {
  padding: 70px;
  text-align: center;
  color: var(--muted);
}
.source-details {
  font-size: 12px;
  padding: 12px 0;
  color: var(--muted);
}
.source-details ul {
  padding-inline-start: 18px;
}
.source-details li {
  margin: 9px 0;
  overflow-wrap: anywhere;
}
.source-details svg {
  width: 13px;
  height: 13px;
  vertical-align: middle;
}
.source-details summary {
  font-size: 12px;
}
.downloaded-files {
  list-style: none;
  padding: 0;
}
.downloaded-files li {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}
.downloaded-files small {
  white-space: nowrap;
  color: var(--muted);
}
.downloaded-files svg {
  width: 14px;
  height: 14px;
  vertical-align: middle;
}
.quick-guide {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 20px;
  margin-top: 20px;
}
@media (min-width: 1700px) {
  main {
    padding-top: 24px;
  }
  .course-section {
    padding: 28px 32px;
  }
  .columns {
    grid-template-columns: minmax(0, 1fr) 300px;
  }
}
@media (max-width: 1250px) {
  .sidebar {
    width: 215px;
  }
  .app-shell {
    margin-right: 215px;
  }
  .columns {
    grid-template-columns: minmax(0, 1fr) 245px;
    gap: 20px;
  }
  main {
    padding: 18px 24px 40px;
  }
  .breadcrumb {
    padding-inline: 24px;
  }
  .course-section {
    padding: 22px;
  }
  .question-shell {
    grid-template-columns: 1fr;
  }
  .question-info {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 10px 14px;
    flex-wrap: wrap;
  }
  .question-info h2 {
    margin: 0;
  }
  .question-info p {
    margin: 0;
  }
  .flag-link {
    padding: 0;
    margin-inline-start: auto;
  }
  .quiz-layout {
    grid-template-columns: minmax(0, 1fr) 215px;
    gap: 18px;
  }
  .question-content {
    padding: 20px;
  }
  .radio-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 1000px) {
  .columns,
  .setup-layout,
  .guide-grid {
    grid-template-columns: 1fr;
  }
  .dashboard-aside {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }
  .dashboard-aside .card {
    margin: 0;
  }
  .dashboard-aside .card:last-child {
    grid-column: 1/-1;
  }
  .quiz-layout {
    grid-template-columns: 1fr;
  }
  .quiz-side {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }
  .quiz-side .card {
    margin: 0;
  }
  .question-map {
    grid-template-columns: repeat(5, 1fr);
  }
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat {
    border-bottom: 1px solid var(--line);
  }
  .top-link {
    display: none;
  }
  .brand small {
    display: none;
  }
  .settings-grid {
    grid-template-columns: 1fr;
  }
  h1 {
    font-size: 24px;
  }
}
@media (max-width: 900px) {
  .index-toggle {
    display: inline-flex;
  }
  .topbar {
    gap: 14px;
    padding-inline: 16px;
    height: 61px;
  }
  .brand {
    font-size: 22px;
  }
  .brand-icon svg {
    width: 25px;
  }
  .save-status {
    font-size: 10px;
  }
  .header-actions {
    gap: 10px;
  }
  .sidebar {
    top: 61px;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.15s;
    width: 265px;
    box-shadow: -5px 6px 20px #0001;
  }
  .index-open .sidebar {
    transform: translateX(0);
    visibility: visible;
  }
  .app-shell {
    margin: 61px 0 0;
  }
  .breadcrumb {
    padding: 18px 18px 0;
    gap: 8px;
    font-size: 11px;
  }
  main {
    padding: 16px 18px 30px;
  }
  .course-tabs {
    gap: 22px;
    margin-bottom: 22px;
  }
  .course-tabs a {
    font-size: 13px;
  }
  .page-heading {
    margin-bottom: 15px;
  }
  h1 {
    font-size: 23px;
  }
  .page-heading p {
    font-size: 12px;
  }
  .course-section {
    padding: 20px;
  }
  .course-section > h2 {
    font-size: 18px;
  }
  .activity-row {
    gap: 12px;
  }
  .activity-title {
    font-size: 15px;
  }
  .activity-copy p {
    font-size: 12px;
  }
  .activity-icon {
    width: 36px;
    height: 36px;
  }
  .activity-row > .icon-button {
    min-width: 28px;
  }
  .course-facts {
    gap: 6px 18px;
    font-size: 11px;
  }
  .topic-row {
    gap: 10px;
    flex-wrap: wrap;
  }
  .topic-row .topic-name {
    font-size: 13px;
    min-width: 130px;
  }
  .topic-row small {
    font-size: 11px;
  }
  .topic-row .progress {
    width: 45px;
  }
  .dashboard-aside {
    grid-template-columns: 1fr;
  }
  .dashboard-aside .card:last-child {
    grid-column: auto;
  }
  .resources-grid {
    grid-template-columns: 1fr;
  }
  .field {
    min-width: 140px;
  }
  .quiz-side {
    grid-template-columns: 1fr;
  }
  .question-map {
    grid-template-columns: repeat(10, minmax(25px, 1fr));
  }
  .question-content {
    padding: 18px 14px;
  }
  .question-info {
    gap: 8px 15px;
  }
  .question-info p {
    font-size: 10px;
  }
  .question-info h2 {
    font-size: 14px;
  }
  .quiz-toolbar {
    flex-wrap: wrap;
  }
  .question-actions {
    align-items: stretch;
    gap: 8px;
  }
  .question-actions .btn {
    font-size: 12px;
    padding: 8px 11px;
  }
  .question-actions > div {
    gap: 7px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }
  .history-row {
    grid-template-columns: 1.4fr 0.7fr 1fr;
    font-size: 12px;
  }
  .history-row > :last-child {
    display: none;
  }
  .card {
    padding: 20px;
  }
  .resume-row {
    padding: 17px;
    align-items: start;
    flex-direction: column;
  }
  .stats .stat {
    padding: 15px;
  }
  .stat-value {
    font-size: 23px;
  }
  .stat-label {
    font-size: 11px;
  }
  .stat-icon {
    display: none;
  }
  footer {
    padding: 18px;
    font-size: 11px;
  }
  .downloaded-files li {
    flex-wrap: wrap;
  }
  .document-activity {
    font-size: 13px;
  }
  .document-activity small {
    font-size: 11px;
  }
}
@media (max-width: 400px) {
  .save-status {
    display: none;
  }
  .question-map {
    grid-template-columns: repeat(7, 1fr);
  }
  .radio-cards {
    grid-template-columns: 1fr;
  }
  .course-section {
    padding: 17px;
  }
  .course-facts {
    display: block;
  }
  .course-facts span {
    display: block;
  }
  .course-facts span + span:before {
    display: none;
  }
  .topic-row .progress {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}
@media print {
  .sidebar,
  .topbar,
  footer,
  .btn,
  .icon-button,
  .filters,
  .library-actions,
  .pagination,
  .course-tabs,
  .breadcrumb {
    display: none !important;
  }
  .app-shell {
    margin: 0;
  }
  main {
    padding: 0;
    max-width: none;
  }
  .card {
    break-inside: avoid;
    box-shadow: none;
  }
  .question-text {
    font-size: 14px;
  }
  :root {
    --bg: #fff;
    --ink: #000;
    --muted: #444;
    --surface: #fff;
  }
  body {
    background: #fff;
  }
  .library-source {
    color: #444;
  }
  .question-content {
    background: #fff;
  }
  .quiz-side {
    display: none;
  }
  .quiz-layout {
    display: block;
  }
}

/* Quick exam entry and access to custom settings. */
.exam-entry {
  max-width: 560px;
  margin: clamp(40px, 10vh, 120px) auto;
  padding: 40px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.entry-icon {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--mint);
  color: var(--green);
}
.entry-icon svg { width: 32px; height: 32px; }
.exam-entry h1 { font-size: clamp(28px, 5vw, 38px); }
.exam-entry p, .exam-entry small { color: var(--muted); }
.entry-button { min-height: 56px; width: min(100%, 300px); font-size: 18px; }
.question-shell { display: block; }
main { padding-top: 32px; }
@media (max-width: 900px) {
  .exam-entry { margin: 36px auto; padding-inline: 0; }
}

.question-image { margin: 16px 0; }
.question-image img { display: block; max-width: 100%; height: auto; margin: auto; background: white; border-radius: 8px; }
.question-image a { display: block; }
.question-scan { margin: 16px 0; }
.question-scan summary { cursor: pointer; }

.account-form { display: grid; gap: 18px; margin-top: 20px; }
.account-form small { color: var(--muted); }
#account-error { color: var(--red); }

.exam-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; margin-top: 24px; }
.exam-fields .field { min-width: 0; }
.exam-fields small { color: var(--muted); }
.exam-summary { align-self: start; }
.exam-summary > .btn { display: flex; justify-content: center; width: 100%; margin-top: 12px; }
.exam-clock { display: flex; flex-direction: column; gap: 2px; }
.exam-clock #timer { color: var(--green); font-size: 20px; font-weight: 650; font-variant-numeric: tabular-nums; }
@media (max-width: 600px) {
  .exam-fields { grid-template-columns: 1fr; }
  .quiz-toolbar { flex-wrap: wrap; }
}

.question-context { white-space: pre-wrap; padding: 16px; margin: 16px 0; border: 1px solid var(--line); border-radius: 8px; font-size: 1rem; line-height: 1.9; }
.completeness-warning { padding: 12px; border: 1px solid #d9b45d; border-radius: 8px; font-size: .875rem; line-height: 1.8; }