:root {
  --ink: #171a18;
  --muted: #626a65;
  --canvas: #edf1ed;
  --surface: #ffffff;
  --line: #ccd3cd;
  --line-dark: #3a403c;
  --rail: #181b19;
  --cyan: #72dadd;
  --cyan-strong: #32bdc2;
  --yellow: #f0d34f;
  --coral: #f27668;
  --violet: #7b71cd;
  --code: #111512;
  --code-soft: #202521;
  color: var(--ink);
  background: var(--canvas);
  font-family: Aptos, "Segoe UI", ui-sans-serif, system-ui, sans-serif;
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
}

body,
button,
input,
select,
textarea {
  font: inherit;
}

a {
  color: inherit;
}

button,
.button-link {
  align-items: center;
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 4px;
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  font-weight: 700;
  justify-content: center;
  min-height: 40px;
  padding: 9px 15px;
  text-decoration: none;
}

button:hover:not(:disabled),
.button-link:hover {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

button:disabled {
  cursor: not-allowed;
  opacity: .55;
}

button.secondary {
  background: transparent;
  border-color: #77807a;
  color: #e9eeea;
}

button.secondary:hover:not(:disabled) {
  background: #303631;
  border-color: #a5aea7;
  color: #fff;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 2px;
}

input:not([type="hidden"]):not([type="checkbox"]),
select,
textarea:not(#code):not(.code-input) {
  background: #fff;
  border: 1px solid #9da69f;
  border-radius: 4px;
  color: var(--ink);
  padding: 10px 11px;
  width: 100%;
}

textarea {
  resize: vertical;
}

code,
#code,
.code-input,
#output,
.line-numbers,
.brand-symbol,
.code-poster {
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

code {
  color: #156f75;
}

.app-shell {
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr);
  min-height: 100vh;
}

.app-rail {
  background: var(--rail);
  color: #f1f4f1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 26px 18px 18px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  align-items: center;
  display: inline-flex;
  gap: 11px;
  text-decoration: none;
}

.brand-symbol {
  align-items: center;
  background: var(--cyan);
  border-radius: 4px;
  color: var(--ink);
  display: inline-flex;
  font-size: .9rem;
  font-weight: 800;
  height: 39px;
  justify-content: center;
  width: 39px;
}

.brand-copy {
  display: grid;
  line-height: 1.05;
}

.brand-copy strong {
  font-size: .96rem;
}

.brand-copy small {
  color: #aeb7b0;
  font-size: .72rem;
  margin-top: 4px;
}

.rail-nav {
  border-top: 1px solid var(--line-dark);
  display: grid;
  gap: 4px;
  margin-top: 34px;
  padding-top: 18px;
}

.rail-nav a {
  border-left: 3px solid transparent;
  color: #c6cec8;
  font-size: .88rem;
  font-weight: 650;
  padding: 11px 12px;
  text-decoration: none;
}

.rail-nav a:hover {
  background: #242925;
  border-left-color: var(--yellow);
  color: #fff;
}

.rail-account {
  border-top: 1px solid var(--line-dark);
  display: grid;
  gap: 3px 10px;
  grid-template-columns: 36px minmax(0, 1fr);
  margin-top: auto;
  padding-top: 18px;
}

.account-avatar {
  align-items: center;
  background: var(--coral);
  border-radius: 4px;
  color: var(--ink);
  display: flex;
  font-weight: 800;
  grid-row: 1;
  height: 36px;
  justify-content: center;
  width: 36px;
}

.account-copy {
  display: grid;
  min-width: 0;
}

.account-copy strong {
  font-size: .82rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-copy small {
  color: #aeb7b0;
  font-size: .72rem;
  margin-top: 2px;
}

.rail-account form {
  grid-column: 1 / -1;
  margin-top: 10px;
}

.rail-logout {
  background: transparent;
  border-color: var(--line-dark);
  color: #c6cec8;
  min-height: 34px;
  padding: 6px 10px;
  width: 100%;
}

.page {
  margin: 0 auto;
  max-width: 1360px;
  padding: 42px 48px 68px;
  width: 100%;
}

.eyebrow {
  color: #3f4943;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: .72rem;
  font-weight: 750;
  margin: 0 0 9px;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  font-size: 2.35rem;
  line-height: 1.08;
  margin: 0 0 12px;
}

h2,
h3 {
  line-height: 1.25;
}

.dashboard-heading {
  border-bottom: 2px solid var(--ink);
  margin: 8px 0 34px;
  padding: 10px 0 26px;
  position: relative;
}

.dashboard-heading::after {
  background: var(--cyan);
  bottom: -2px;
  content: "";
  height: 6px;
  left: 0;
  position: absolute;
  width: 96px;
}

.role-teacher .dashboard-heading::after {
  background: var(--yellow);
}

.role-admin .dashboard-heading::after {
  background: var(--coral);
}

.dashboard-heading > p:last-child {
  color: var(--muted);
  line-height: 1.5;
  margin: 0;
  max-width: 650px;
}

.message {
  background: #fff6ca;
  border: 1px solid #d4bd46;
  border-left: 6px solid var(--yellow);
  border-radius: 4px;
  color: #554b17;
  font-size: .88rem;
  line-height: 1.5;
  margin: 0 0 18px;
  padding: 11px 13px;
}

.page-message {
  margin-bottom: 24px;
}

.empty-state,
.empty-charts {
  color: var(--muted);
  font-size: .9rem;
  margin: 0;
}

.visually-hidden {
  height: 1px;
  margin: -1px;
  overflow: hidden;
  position: absolute;
  width: 1px;
}

/* Student catalog */

.task-grid {
  border-top: 1px solid var(--line);
  display: grid;
}

.task-card {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 22px;
  grid-template-columns: 58px minmax(0, 1fr) auto;
  min-height: 148px;
  padding: 22px 0;
}

.task-number {
  color: var(--coral);
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 1.65rem;
  font-weight: 800;
}

.task-card-copy {
  min-width: 0;
}

.task-card h2 {
  font-size: 1.18rem;
  margin: 0 0 7px;
}

.task-card-copy > p:last-child {
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.5;
  margin: 0;
  max-width: 720px;
}

.task-card .button-link {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
  white-space: nowrap;
}

.task-card .button-link:hover {
  background: var(--coral);
  border-color: var(--coral);
}

/* Shared dashboard sections */

.teacher-section {
  border-top: 2px solid var(--ink);
  margin: 0 0 42px;
  padding-top: 24px;
  scroll-margin-top: 24px;
}

.teacher-section--activities {
  margin-bottom: 0;
}

.section-heading {
  align-items: end;
  display: flex;
  gap: 24px;
  justify-content: space-between;
  margin-bottom: 18px;
}

.section-heading h2 {
  font-size: 1.28rem;
  margin: 0;
}

.section-heading > p {
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.5;
  margin: 0;
  max-width: 470px;
}

.form-panel,
.table-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 22px;
}

.form-panel {
  border-top: 5px solid var(--cyan);
}

.panel-heading {
  display: grid;
  gap: 5px;
  margin-bottom: 17px;
}

.panel-heading h3,
.form-panel h2,
.table-panel h2 {
  font-size: 1.08rem;
  margin: 0;
}

.panel-heading p,
.field-help {
  color: var(--muted);
  font-size: .82rem;
  line-height: 1.45;
  margin: 0;
}

.form-panel form {
  display: grid;
  gap: 10px;
}

.form-panel label,
.settings-grid label {
  color: #313732;
  font-size: .84rem;
  font-weight: 700;
}

.form-panel label span {
  color: var(--muted);
  font-size: .78rem;
  font-weight: 500;
}

.form-field {
  display: grid;
  gap: 7px;
}

.form-field label {
  margin: 0;
}

.form-panel .code-input {
  background: #0c100e;
  border: 1px solid #3b4740;
  border-radius: 4px;
  box-shadow: inset 4px 0 0 var(--cyan);
  caret-color: var(--cyan);
  color: #e9f2ec;
  line-height: 1.55;
  padding: 12px;
  tab-size: 4;
  width: 100%;
}

.form-panel .code-input::placeholder,
#code::placeholder {
  color: #849088;
  opacity: 1;
}

.form-panel .code-input:focus {
  border-color: var(--cyan);
  outline-color: var(--cyan);
}

.form-panel button {
  justify-self: start;
}

.classroom-layout {
  align-items: start;
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
}

.classroom-create-panel {
  border-top-color: var(--yellow);
  position: sticky;
  top: 24px;
}

.classroom-create-actions {
  display: flex;
  gap: 8px;
}

.classroom-create-actions input {
  min-width: 0;
}

.classroom-create-actions button {
  flex: 0 0 auto;
}

.classroom-list {
  border-top: 1px solid var(--line);
  display: grid;
}

.classroom-row {
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 15px;
  padding: 20px 0;
}

.classroom-summary {
  align-items: baseline;
  display: flex;
  gap: 14px;
  justify-content: space-between;
}

.classroom-summary h3 {
  font-size: 1rem;
  margin: 0;
}

.classroom-summary p {
  color: var(--muted);
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: .76rem;
  margin: 0;
}

.classroom-members {
  display: grid;
  gap: 13px;
}

.member-search,
.task-search {
  display: grid;
  gap: 6px;
  max-width: 420px;
}

.member-search label,
.task-search label {
  color: var(--muted);
  font-size: .78rem;
  font-weight: 700;
}

.member-search input,
.task-search input {
  min-width: 0;
}

.member-list {
  display: grid;
  gap: 0;
  list-style: none;
  margin: 0;
  max-height: 280px;
  overflow-y: auto;
  padding: 0 8px 0 0;
  scrollbar-gutter: stable;
}

.member-list li {
  align-items: center;
  border-bottom: 1px dashed var(--line);
  display: flex;
  gap: 12px;
  justify-content: space-between;
  padding: 8px 0;
}

.member-list li:last-child {
  border-bottom: 0;
}

.member-list span {
  display: grid;
  min-width: 0;
}

.member-list strong {
  font-size: .86rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.member-list small {
  color: var(--muted);
  font-size: .76rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.member-list form,
.task-actions form {
  margin: 0;
}

.member-filter-empty {
  color: var(--muted);
  font-size: .82rem;
  margin: 0;
}

.enrollment-form {
  display: flex;
  gap: 8px;
  max-width: 580px;
}

.enrollment-form input {
  min-width: 0;
}

.enrollment-form button {
  flex: 0 0 auto;
}

.task-composer {
  border-top-color: var(--violet);
  padding: 26px;
}

.form-panel .task-form {
  gap: 20px;
}

.code-fields {
  align-items: start;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.code-fields .form-field {
  align-content: start;
}

.code-fields .code-field {
  background: #171c18;
  border: 1px solid #3b4740;
  border-radius: 4px;
  gap: 8px;
  padding: 14px;
}

.code-fields .code-field label {
  color: #f0f4f0;
}

.code-fields .code-field label span,
.code-fields .code-field .field-help {
  color: #a6b0a8;
}

.classroom-selector {
  border: 0;
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
}

.task-form .classroom-selector {
  border-top: 1px solid var(--line);
  padding-top: 19px;
}

.classroom-selector legend {
  font-size: .86rem;
  font-weight: 750;
  margin-bottom: 6px;
  padding: 0;
}

.checkbox-option {
  align-items: center;
  background: #f3f6f3;
  border: 1px solid var(--line);
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  gap: 9px;
  padding: 10px 11px;
}

.checkbox-option:hover {
  border-color: var(--violet);
}

.checkbox-option input {
  accent-color: var(--violet);
  height: 17px;
  margin: 0;
  width: 17px;
}

.checkbox-option span {
  align-items: baseline;
  color: #29302b;
  display: flex;
  font-size: .86rem;
  gap: 8px;
}

.checkbox-option small {
  color: var(--muted);
  font-size: .76rem;
}

.form-actions {
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: flex-end;
  padding-top: 19px;
}

.form-actions button {
  background: var(--violet);
  border-color: var(--violet);
  justify-self: auto;
}

.form-actions button:hover:not(:disabled) {
  background: var(--yellow);
  border-color: var(--yellow);
}

.created-tasks {
  margin-top: 32px;
}

.subsection-heading {
  align-items: baseline;
  display: flex;
  gap: 18px;
  justify-content: space-between;
  margin-bottom: 12px;
}

.subsection-heading h3 {
  font-size: 1.05rem;
  margin: 0;
}

.subsection-heading p {
  color: var(--muted);
  font-size: .84rem;
  margin: 0;
}

.task-list {
  border-top: 1px solid var(--line);
  display: grid;
  max-height: 520px;
  overflow-y: auto;
  padding-right: 8px;
  scrollbar-gutter: stable;
}

.task-row {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1fr) auto;
  padding: 20px 0;
}

.task-row h3 {
  font-size: 1rem;
  margin: 0 0 7px;
}

.task-row p {
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.5;
  margin: 0;
}

.task-classrooms {
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: .74rem !important;
  margin-top: 8px !important;
}

.task-filter-empty {
  color: var(--muted);
  font-size: .82rem;
  margin: 12px 0 0;
}

.task-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.task-actions a,
.text-button {
  color: #185e72;
  font-size: .82rem;
  font-weight: 700;
  text-decoration: underline;
}

.submission-list-section {
  margin-top: 38px;
}

.submission-list {
  border-top: 1px solid var(--line);
  display: grid;
}

.submission-row {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(180px, .9fr) minmax(0, 1.4fr) auto;
  padding: 18px 0;
}

.submission-student {
  display: grid;
  gap: 3px;
}

.submission-student strong {
  font-size: .92rem;
}

.submission-student small,
.submission-state small,
.submission-empty {
  color: var(--muted);
  font-size: .78rem;
}

.submission-state {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.submission-empty {
  margin: 0;
}

.review-link {
  justify-self: end;
}

.text-button {
  background: transparent;
  border: 0;
  border-radius: 0;
  min-height: 0;
  padding: 0;
}

.text-button:hover:not(:disabled) {
  background: transparent;
  color: #9c3b31;
}

.status-badge,
.role-badge {
  background: #e7ebe8;
  border: 1px solid #c4cbc6;
  border-radius: 999px;
  color: #455049;
  font-size: .72rem;
  font-weight: 700;
  padding: 4px 8px;
}

.status-badge.published {
  background: #d8f4ed;
  border-color: #9cd6c6;
  color: #176452;
}

.status-badge.success {
  background: #d8f4ed;
  border-color: #9cd6c6;
  color: #176452;
}

.status-badge.error {
  background: #fde3de;
  border-color: #e8b5aa;
  color: #9c3b31;
}

.status-badge.submitted {
  background: #fff4c2;
  border-color: #e1c96b;
  color: #705a00;
}

.status-badge.reviewed {
  background: #e7e2fb;
  border-color: #c7b9ef;
  color: #51379c;
}

.status-badge.draft {
  background: #fff1bd;
  border-color: #dec862;
  color: #6e5a0b;
}

/* Administration */

.summary-grid {
  border: 2px solid var(--ink);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-bottom: 28px;
}

.summary-grid article {
  background: #fff;
  border-right: 1px solid var(--ink);
  display: grid;
  gap: 5px;
  min-height: 126px;
  padding: 22px;
  position: relative;
}

.summary-grid article:last-child {
  border-right: 0;
}

.summary-grid article::before {
  background: var(--cyan);
  content: "";
  height: 7px;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
}

.summary-grid article:nth-child(2)::before {
  background: var(--yellow);
}

.summary-grid article:nth-child(3)::before {
  background: var(--coral);
}

.summary-grid strong {
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 2rem;
}

.summary-grid span {
  color: var(--muted);
  font-size: .84rem;
}

.settings-panel {
  border-top-color: var(--yellow);
  margin-bottom: 28px;
  scroll-margin-top: 24px;
}

.settings-panel h2 {
  margin-bottom: 8px;
}

.settings-panel form {
  gap: 17px;
  margin-top: 18px;
}

.settings-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.settings-grid label {
  display: grid;
  gap: 7px;
}

.table-panel {
  border-top: 5px solid var(--coral);
  scroll-margin-top: 24px;
}

.table-panel h2 {
  margin-bottom: 16px;
}

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

table {
  border-collapse: collapse;
  min-width: 680px;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 13px 9px;
  text-align: left;
}

th {
  color: var(--muted);
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
}

td {
  font-size: .86rem;
}

.role-form {
  align-items: center;
  display: flex;
  gap: 9px;
}

.user-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 9px 14px;
}

.user-actions form {
  margin: 0;
}

.role-form select {
  min-width: 132px;
  padding: 7px 9px;
}

.text-button-danger {
  color: #a1372c;
}

/* Coding workspace */

.student-activity-page .app-shell {
  grid-template-columns: 1fr;
}

.student-activity-page .app-rail {
  display: none;
}

.student-activity-page .page {
  max-width: none;
  padding: 0;
}

.activity-topbar {
  align-items: center;
  background: var(--rail);
  color: #f1f4f1;
  display: grid;
  gap: 22px;
  grid-template-columns: auto minmax(0, 1fr) auto;
  min-height: 70px;
  padding: 14px 48px;
}

.activity-topbar .brand {
  color: #fff;
}

.activity-topbar-nav {
  border-left: 1px solid var(--line-dark);
  padding-left: 20px;
}

.activity-topbar-nav a {
  color: #c6cec8;
  font-size: .86rem;
  font-weight: 700;
  text-decoration: none;
}

.activity-topbar-nav a:hover {
  color: var(--cyan);
}

.activity-topbar-account {
  align-items: center;
  display: flex;
  gap: 10px;
  min-width: 0;
}

.activity-topbar-account form {
  margin: 0;
}

.activity-topbar-account .rail-logout {
  min-height: 36px;
  width: auto;
}

.activity-page-content {
  margin: 0 auto;
  max-width: 1440px;
}

.student-activity-page .activity-page-content {
  padding: 26px 48px 64px;
}

.activity-back {
  margin: 2px 0 22px;
}

.activity-back a {
  color: #325d51;
  font-size: .84rem;
  font-weight: 700;
}

.activity-workspace-grid {
  align-items: start;
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.activity-intro {
  border-bottom: 2px solid var(--ink);
  margin-bottom: 26px;
  padding-bottom: 24px;
  position: relative;
}

.activity-intro::after {
  background: var(--cyan);
  bottom: -2px;
  content: "";
  height: 6px;
  left: 0;
  position: absolute;
  width: 92px;
}

.activity-intro h1 {
  font-size: 2rem;
}

.instruction {
  color: var(--muted);
  line-height: 1.55;
  margin: 0;
  max-width: 760px;
}

.workspace {
  background: var(--code);
  border-radius: 6px;
  margin-top: 26px;
  overflow: hidden;
}

.activity-workspace-grid .workspace,
.activity-workspace-grid .results-panel {
  min-width: 0;
}

.activity-workspace-grid .workspace {
  margin-top: 0;
}

.workspace-heading {
  align-items: center;
  background: var(--code-soft);
  border-bottom: 1px solid #343b36;
  display: flex;
  justify-content: space-between;
  padding: 11px 15px;
}

.workspace-heading label {
  color: #f1f5f2;
  font-size: .82rem;
  font-weight: 700;
  margin: 0;
}

.workspace-heading span {
  color: var(--cyan);
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: .72rem;
}

.code-editor {
  background: #0c100e;
  border: 1px solid #3b4740;
  border-radius: 4px;
  position: relative;
}

.line-numbers {
  background: #1c211d;
  border-right: 1px solid #343b36;
  border-radius: 0;
  bottom: 0;
  color: #7f8a82;
  font-size: .88rem;
  left: 0;
  line-height: 1.6;
  margin: 0;
  overflow: hidden;
  padding: 18px 11px 18px 0;
  position: absolute;
  text-align: right;
  top: 0;
  user-select: none;
  white-space: pre;
  width: 52px;
  z-index: 1;
}

#code {
  background: #0c100e;
  border: 0;
  border-radius: 0;
  color: #e7f0ea;
  display: block;
  font-size: .88rem;
  line-height: 1.6;
  min-height: calc((var(--editor-lines, 18) * 1.6em) + 36px);
  overflow: auto;
  padding: 18px 18px 18px 70px;
  resize: vertical;
  tab-size: 4;
  white-space: pre;
  width: 100%;
}

#code:focus {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.hint {
  background: var(--code-soft);
  color: #9da8a0;
  font-size: .75rem;
  margin: 0;
  padding: 9px 15px;
}

.actions {
  align-items: center;
  background: var(--code-soft);
  border-top: 1px solid #343b36;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  padding: 14px 15px;
}

.actions #run {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.actions #run:hover:not(:disabled) {
  background: var(--yellow);
  border-color: var(--yellow);
}

.actions #submit {
  background: var(--violet);
  border-color: var(--violet);
}

.actions #submit:hover:not(:disabled) {
  background: var(--coral);
  border-color: var(--coral);
}

#status {
  color: #aeb7b0;
  font-size: .77rem;
  margin-left: auto;
}

.results-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-left: 6px solid var(--yellow);
  border-radius: 6px;
  padding: 22px;
}

.results-panel h2 {
  font-size: 1rem;
  margin: 0 0 12px;
}

.review-summary {
  align-items: center;
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  margin: 34px 0 26px;
  padding: 17px 0;
}

.review-summary > div {
  display: grid;
  gap: 6px;
}

.review-summary form {
  margin: 0;
}

.review-label {
  color: var(--muted);
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.review-summary strong {
  font-size: .83rem;
}

.review-grid {
  align-items: start;
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.review-code-panel,
.review-output-panel {
  border-radius: 6px;
  min-width: 0;
  overflow: hidden;
}

.review-code-panel {
  background: var(--code);
}

.review-panel-heading {
  align-items: center;
  background: var(--code-soft);
  border-bottom: 1px solid #343b36;
  color: #f1f5f2;
  display: flex;
  justify-content: space-between;
  padding: 11px 15px;
}

.review-panel-heading h2,
.review-output-panel h2 {
  font-size: 1rem;
  margin: 0;
}

.review-panel-heading span {
  color: var(--cyan);
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: .72rem;
}

.review-code-panel pre {
  color: #e8eee9;
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: .82rem;
  line-height: 1.55;
  margin: 0;
  max-height: 600px;
  min-height: 260px;
  overflow: auto;
  padding: 16px;
  tab-size: 4;
  white-space: pre;
}

.review-output-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-left: 6px solid var(--yellow);
  padding: 22px;
}

.review-output-panel pre {
  background: #f0f3f0;
  border: 1px solid #d7ddd8;
  border-radius: 4px;
  color: #202622;
  line-height: 1.55;
  margin: 12px 0 0;
  max-height: 600px;
  min-height: 260px;
  overflow: auto;
  padding: 14px;
  white-space: pre-wrap;
  word-break: break-word;
}

.review-back {
  margin: 26px 0 0;
}

#output {
  background: #f0f3f0;
  border: 1px solid #d7ddd8;
  border-radius: 4px;
  color: #202622;
  line-height: 1.55;
  margin: 0;
  min-height: calc((var(--output-lines, 12) * 1.55em) + 28px);
  overflow: auto;
  padding: 14px;
  white-space: pre-wrap;
  word-break: break-word;
}

.charts-heading {
  border-top: 1px solid var(--line);
  margin-top: 22px !important;
  padding-top: 20px;
}

#charts {
  display: grid;
  gap: 12px;
}

#charts img {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  display: block;
  height: auto;
  max-width: 100%;
}

/* Authentication */

.auth-page {
  background: var(--canvas);
  min-height: 100vh;
}

.auth-shell {
  display: grid;
  grid-template-columns: minmax(320px, .85fr) minmax(430px, 1.15fr);
  min-height: 100vh;
}

.auth-identity {
  background: var(--rail);
  color: #fff;
  display: flex;
  flex-direction: column;
  padding: 48px;
}

.auth-brand {
  color: #fff;
}

.code-poster {
  border-bottom: 1px solid var(--line-dark);
  border-top: 1px solid var(--line-dark);
  color: #dbe3dd;
  margin: auto 0;
  max-width: 520px;
  padding: 30px 0;
}

.code-poster p {
  font-size: .86rem;
  line-height: 1.75;
  margin: 0;
  overflow-wrap: normal;
  white-space: nowrap;
}

.code-poster p span {
  color: #657069;
  display: inline-block;
  margin-right: 18px;
  text-align: right;
  width: 20px;
}

.code-poster strong {
  color: var(--yellow);
  display: block;
  font-size: .9rem;
  margin: 14px 0 0 42px;
}

.auth-card {
  align-self: center;
  margin: 0 auto;
  padding: 54px;
  width: min(100%, 540px);
}

.auth-heading {
  border-bottom: 2px solid var(--ink);
  margin-bottom: 26px;
  padding-bottom: 18px;
  position: relative;
}

.auth-heading::after {
  background: var(--coral);
  bottom: -2px;
  content: "";
  height: 6px;
  left: 0;
  position: absolute;
  width: 72px;
}

.auth-heading h1 {
  font-size: 2.1rem;
  margin: 0;
}

.auth-card form {
  display: grid;
  gap: 17px;
}

.auth-field {
  display: grid;
  gap: 7px;
}

.auth-field label {
  font-size: .84rem;
  font-weight: 700;
}

.auth-card button {
  background: var(--coral);
  border-color: var(--coral);
  justify-self: start;
  margin-top: 4px;
  min-width: 130px;
}

.auth-link {
  color: var(--muted);
  font-size: .86rem;
  line-height: 1.5;
  margin: 22px 0 0;
}

.auth-link a {
  color: #1a6571;
  font-weight: 700;
}

@media (max-width: 1100px) {
  .page {
    padding: 38px 34px 60px;
  }

  .classroom-layout {
    grid-template-columns: 1fr;
  }

  .classroom-create-panel {
    position: static;
  }

}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .app-rail {
    display: grid;
    gap: 16px;
    grid-template-columns: auto minmax(0, 1fr) auto;
    height: auto;
    padding: 16px 22px 0;
    position: static;
  }

  .rail-nav {
    border-top: 1px solid var(--line-dark);
    display: flex;
    gap: 2px;
    grid-column: 1 / -1;
    margin: 0;
    order: 3;
    overflow-x: auto;
    padding: 8px 0;
  }

  .rail-nav a {
    border-bottom: 3px solid transparent;
    border-left: 0;
    flex: 0 0 auto;
    padding: 9px 12px;
  }

  .rail-nav a:hover {
    border-bottom-color: var(--yellow);
    border-left-color: transparent;
  }

  .rail-account {
    align-self: center;
    border: 0;
    display: flex;
    gap: 9px;
    margin: 0;
    padding: 0;
  }

  .rail-account form {
    margin: 0;
  }

  .rail-logout {
    min-height: 36px;
    width: auto;
  }

  .auth-shell {
    grid-template-columns: minmax(280px, .75fr) minmax(400px, 1.25fr);
  }

  .activity-topbar {
    padding-inline: 30px;
  }

  .student-activity-page .activity-page-content {
    padding-inline: 30px;
  }
}

@media (max-width: 760px) {
  h1 {
    font-size: 2rem;
  }

  .page {
    padding: 30px 22px 52px;
  }

  .dashboard-heading {
    margin-top: 0;
  }

  .section-heading,
  .subsection-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
  }

  .code-fields {
    grid-template-columns: 1fr;
  }

  .activity-workspace-grid {
    grid-template-columns: 1fr;
  }

  .review-grid {
    grid-template-columns: 1fr;
  }

  .review-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .review-summary form {
    grid-column: 1 / -1;
  }

  .summary-grid {
    grid-template-columns: 1fr;
  }

  .summary-grid article {
    border-bottom: 1px solid var(--ink);
    border-right: 0;
    min-height: 108px;
  }

  .summary-grid article:last-child {
    border-bottom: 0;
  }

  .auth-shell {
    grid-template-columns: 1fr;
  }

  .auth-identity {
    min-height: 145px;
    padding: 24px;
  }

  .code-poster {
    display: none;
  }

  .auth-card {
    padding: 40px 24px;
  }
}

@media (max-width: 620px) {
  .app-rail {
    grid-template-columns: 1fr auto;
  }

  .rail-account {
    gap: 7px;
  }

  .account-copy {
    display: none;
  }

  .activity-topbar {
    gap: 14px;
    padding-inline: 22px;
  }

  .activity-topbar-nav {
    padding-left: 14px;
  }

  .student-activity-page .activity-page-content {
    padding: 22px 22px 52px;
  }

  .task-card {
    align-items: start;
    gap: 12px;
    grid-template-columns: 46px minmax(0, 1fr);
    padding: 20px 0;
  }

  .task-card .button-link {
    grid-column: 2;
    justify-self: start;
  }

  .task-row {
    align-items: start;
    gap: 14px;
    grid-template-columns: 1fr;
  }

  .submission-row {
    align-items: start;
    gap: 12px;
    grid-template-columns: 1fr;
  }

  .review-link {
    justify-self: start;
  }

  .task-actions {
    justify-content: flex-start;
  }

  .enrollment-form,
  .classroom-create-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .enrollment-form button,
  .classroom-create-actions button {
    width: 100%;
  }

  .checkbox-option span {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }

  .form-panel,
  .table-panel,
  .task-composer,
  .results-panel {
    padding: 17px;
  }

  #status {
    margin-left: 0;
    width: 100%;
  }
}

@media (max-width: 420px) {
  .app-rail {
    padding-inline: 16px;
  }

  .account-avatar {
    display: none;
  }

  .page {
    padding-inline: 16px;
  }

  .brand-copy {
    display: none;
  }

  .task-card {
    grid-template-columns: 38px minmax(0, 1fr);
  }

  .task-number {
    font-size: 1.25rem;
  }

  .line-numbers {
    width: 44px;
  }

  #code {
    padding-left: 59px;
  }
}