:root {
  --bg: #f4efe5;
  --bg-deep: #eadfcd;
  --ink: #1e2230;
  --muted: #616776;
  --card: rgba(255, 252, 247, 0.9);
  --card-strong: #fffdf9;
  --line: rgba(30, 34, 48, 0.12);
  --line-strong: rgba(30, 34, 48, 0.18);
  --accent: #0f766e;
  --accent-deep: #134e4a;
  --accent-soft: rgba(15, 118, 110, 0.12);
  --warm: #d97706;
  --danger: #b45309;
  --danger-soft: rgba(180, 83, 9, 0.12);
  --shadow: 0 20px 55px rgba(30, 34, 48, 0.12);
  --radius-xl: 28px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --sans: "Avenir Next", "Trebuchet MS", "Gill Sans", sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(217, 119, 6, 0.15), transparent 26%),
    linear-gradient(180deg, #fbf8f2 0%, var(--bg) 44%, var(--bg-deep) 100%);
}

a {
  color: inherit;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

code,
pre,
table,
.eyebrow,
.panel-kicker,
.timer-badge,
.guard-note,
.table-muted,
.review-meta,
.review-meta-row,
.support-note {
  font-family: var(--mono);
}

.page-shell {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.admin-shell {
  padding-bottom: 70px;
}

.toolbar,
.hero-panel,
.task-panel,
.flash,
.auth-card,
.notice-card {
  backdrop-filter: blur(14px);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.toolbar,
.hero-panel,
.task-panel,
.auth-card {
  border-radius: var(--radius-xl);
}

.hero-panel,
.task-panel,
.auth-card {
  padding: 28px;
}

.toolbar {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
  padding: 18px 24px;
}

.toolbar-title {
  margin: 0;
  font-size: 1.45rem;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.class-switcher {
  display: grid;
  grid-template-columns: auto minmax(180px, 260px) auto;
  align-items: center;
  gap: 8px;
}

.class-switcher-label {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-deep);
}

.class-switcher select {
  min-height: 42px;
  padding: 9px 12px;
}

.class-switcher-button {
  min-height: 42px;
  padding-block: 9px;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 8px;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-deep);
}

.hero-panel {
  position: relative;
  overflow: hidden;
}

.hero-panel::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(15, 118, 110, 0.24), rgba(15, 118, 110, 0.03));
  pointer-events: none;
}

.compact-hero h1 {
  max-width: 18ch;
}

h1 {
  max-width: 12ch;
  margin-bottom: 14px;
  font-size: clamp(2.1rem, 4.8vw, 4.1rem);
  line-height: 0.95;
}

h2 {
  margin-bottom: 10px;
  font-size: clamp(1.35rem, 2.3vw, 2rem);
}

h3 {
  margin-bottom: 10px;
  font-size: 1.05rem;
}

.hero-copy,
.panel-subtitle,
.hint-box,
.security-panel,
.notice-card p,
.task-prompt {
  color: var(--muted);
  line-height: 1.65;
}

.hero-copy {
  max-width: 62ch;
  margin-bottom: 24px;
  font-size: 1rem;
}

.hero-copy.compact {
  margin-bottom: 0;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.meta-card {
  position: relative;
  z-index: 1;
  padding: 16px 18px;
  border-radius: var(--radius-lg);
  background: var(--card-strong);
  border: 1px solid var(--line);
}

.meta-label {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.9rem;
}

.flash {
  margin-top: 18px;
  margin-bottom: 18px;
  padding: 16px 18px;
  border-radius: var(--radius-lg);
  font-weight: 700;
}

.flash-success {
  color: var(--accent-deep);
  border-color: rgba(15, 118, 110, 0.24);
}

.flash-error {
  color: var(--danger);
  border-color: rgba(180, 83, 9, 0.24);
}

.task-panel {
  margin-top: 22px;
}

.submenu-panel {
  padding: 16px 18px;
}

.submenu-nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.header-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.task-kind-badge,
.progress-badge,
.summary-chip,
.toolbar-link,
.ghost-button,
.primary-button,
.secondary-button,
.danger-button {
  border-radius: 999px;
  font-weight: 700;
}

.task-kind-badge {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  background: rgba(19, 78, 74, 0.11);
  color: var(--accent-deep);
}

.progress-badge {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.summary-chip {
  display: inline-flex;
  align-items: center;
  margin-left: 10px;
  padding: 6px 10px;
  background: rgba(217, 119, 6, 0.12);
  color: #8a5200;
  font-size: 0.84rem;
}

.toolbar-link,
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
  text-decoration: none;
}

.toolbar-link.active,
.primary-button,
.secondary-button[data-test-answer] {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #155e75);
}

.ghost-button,
.primary-button,
.secondary-button,
select,
input,
textarea {
  font: inherit;
}

.ghost-button,
.primary-button,
.secondary-button,
.danger-button {
  cursor: pointer;
  border: none;
}

.secondary-button {
  color: var(--accent-deep);
  background: rgba(15, 118, 110, 0.1);
}

.secondary-button:disabled {
  opacity: 0.75;
  cursor: wait;
}

.primary-button:disabled,
.secondary-button[data-test-answer]:disabled {
  opacity: 0.75;
  cursor: wait;
}

.danger-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 16px;
  color: var(--danger);
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(180, 83, 9, 0.2);
}

.timer-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(20, 20, 27, 0.95);
  color: #f8fafc;
  letter-spacing: 0.02em;
}

.timer-label {
  color: rgba(248, 250, 252, 0.72);
  font-size: 0.84rem;
}

.question-guard {
  position: relative;
  overflow: hidden;
  margin-bottom: 18px;
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(20, 24, 36, 0.1);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.83), rgba(255, 250, 242, 0.9));
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

.guard-note {
  position: relative;
  z-index: 4;
  margin-bottom: 14px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  background: rgba(21, 94, 117, 0.08);
  color: #155e75;
  font-size: 0.82rem;
}

.watermarked-block {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.task-statement-block {
  margin-bottom: 18px;
  border-radius: 16px;
}

.watermark-layer {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.watermark-grid {
  position: absolute;
  inset: -12%;
  display: grid;
  grid-template-columns: repeat(var(--watermark-columns, 3), minmax(150px, 1fr));
  align-content: center;
  justify-items: center;
  gap: 38px 64px;
  opacity: var(--watermark-opacity, 0.08);
  transform: rotate(-28deg) scale(1.04);
}

.guard-content {
  position: relative;
  z-index: 1;
}

.guard-watermark {
  display: block;
  color: #155e75;
  font-size: var(--watermark-font-size, 1.55rem);
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
}

.watermarked-body {
  position: relative;
  z-index: 1;
}

.screen-watermark-veil {
  position: fixed;
  inset: -12vh -12vw;
  z-index: 9999;
  display: grid;
  grid-template-columns: repeat(6, minmax(160px, 1fr));
  align-content: space-around;
  justify-items: center;
  gap: 38px 56px;
  pointer-events: none;
  opacity: 0.035;
  transform: rotate(-24deg);
  mix-blend-mode: multiply;
}

.screen-watermark-veil span {
  color: #0f766e;
  font-size: clamp(1.4rem, 2.8vw, 3rem);
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
}

[data-guarded-content] {
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

.project-watermarked .watermark-grid {
  inset: -22%;
  gap: 18px 30px;
  align-content: space-around;
  transform: rotate(-28deg) scale(1.12);
}

.project-watermarked .guard-watermark {
  color: #155e75;
}

.project-topic-card {
  min-height: 118px;
}

.task-prompt {
  margin-bottom: 18px;
  color: var(--ink);
  font-size: 1.02rem;
}

.lesson-section-box {
  margin-bottom: 18px;
}

.material-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.material-link,
.material-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(15, 118, 110, 0.22);
  background: rgba(240, 253, 250, 0.82);
  color: var(--accent-strong);
  font-weight: 700;
  text-decoration: none;
}

.admin-material-list {
  margin: 14px 0;
}

.compact-form {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-weight: 700;
}

.hint-box,
.security-panel,
.result-panel,
.completion-panel,
.notice-card {
  border-radius: var(--radius-lg);
}

.hint-box,
.security-panel {
  margin-bottom: 18px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.74);
}

.schema-panel {
  margin-top: 14px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  padding: 0 18px 18px;
  background: linear-gradient(180deg, #183040 0%, #13222e 100%);
}

.schema-panel h3 {
  padding-top: 16px;
  color: #f3f5f9;
}

.sample-table-card {
  margin-top: 14px;
  padding: 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.96);
}

.sample-table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sample-table-header h4 {
  margin: 0;
}

.sample-table-header span,
.table-muted,
.review-meta,
.review-meta-row,
.support-note {
  color: var(--muted);
  font-size: 0.86rem;
}

.answer-form,
.auth-form {
  display: grid;
  gap: 14px;
}

.admin-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}

.field-stack {
  display: grid;
  gap: 8px;
}

.field-label,
.editor-label {
  font-weight: 700;
}

.field-inline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-weight: 700;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="date"],
input[type="time"],
select,
textarea {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink);
  padding: 13px 14px;
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid rgba(15, 118, 110, 0.18);
  border-color: rgba(15, 118, 110, 0.4);
}

textarea {
  min-height: 160px;
  resize: vertical;
  line-height: 1.55;
}

textarea[data-answer-input] {
  min-height: 280px;
  padding: 18px;
  background: #121a27;
  color: #f4f7fb;
  border-color: rgba(255, 255, 255, 0.08);
  font-family: var(--mono);
  font-size: 0.95rem;
}

.mcq-group {
  margin: 0;
  padding: 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
}

.mcq-group legend {
  padding: 0 8px;
}

.mcq-option {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 12px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  cursor: pointer;
}

.mcq-option:first-of-type {
  margin-top: 0;
}

.mcq-option span {
  line-height: 1.55;
}

.button-row,
.admin-inline-actions,
.admin-button-row,
.project-window-form {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.admin-button-row {
  grid-column: 1 / -1;
}

.result-panel {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
}

.passive-panel {
  background: rgba(255, 247, 232, 0.95);
}

.result-placeholder {
  margin: 0;
  color: var(--muted);
}

.result-message {
  padding: 12px 14px;
  border-radius: var(--radius-md);
  font-weight: 700;
}

.result-message.loading {
  color: var(--accent-deep);
  background: rgba(15, 118, 110, 0.08);
}

.result-message.success {
  color: var(--accent-deep);
  background: rgba(15, 118, 110, 0.1);
}

.result-message.error {
  color: var(--danger);
  background: var(--danger-soft);
}

.result-message.warning {
  color: #835100;
  background: rgba(217, 119, 6, 0.15);
}

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

.spaced-table {
  margin-top: 18px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.92);
  border-radius: 14px;
  overflow: hidden;
}

th,
td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(30, 34, 48, 0.08);
  text-align: left;
  vertical-align: top;
  font-size: 0.92rem;
}

th {
  background: #f6f3ee;
}

tr:last-child td {
  border-bottom: none;
}

.progress-table td:nth-child(4) {
  min-width: 180px;
}

.progress-bar {
  height: 10px;
  overflow: hidden;
  margin-bottom: 6px;
  border-radius: 999px;
  background: rgba(20, 24, 36, 0.08);
}

.progress-bar span {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), #155e75);
}

.output-block {
  margin-top: 14px;
}

.output-block pre {
  margin: 0;
  padding: 14px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  background: #121a27;
  color: #f4f7fb;
  font-family: var(--mono);
}

.csharp-console {
  margin: 0 0 14px;
  padding: 14px;
  border-radius: var(--radius-md);
  background: #121a27;
  color: #f4f7fb;
  font-family: var(--mono);
}

.csharp-console-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.csharp-console-header h4,
.csharp-console-header p {
  margin: 0;
}

.csharp-console-header p {
  color: rgba(244, 247, 251, 0.72);
  font-size: 0.86rem;
}

.csharp-console-input-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: center;
  margin-top: 10px;
}

.csharp-console-prompt {
  padding-top: 10px;
  color: #86efac;
  font-weight: 700;
  user-select: none;
}

.csharp-console-line-input {
  margin: 0;
  padding: 10px 12px;
  border-color: rgba(134, 239, 172, 0.28);
  background: rgba(15, 23, 42, 0.86);
  color: #f8fafc;
  font-family: var(--mono);
}

.csharp-console-line-input:disabled {
  opacity: 0.68;
}

.csharp-console-line-input::placeholder {
  color: rgba(248, 250, 252, 0.42);
}

.csharp-console-output {
  min-height: 130px;
  max-height: 360px;
  margin: 0;
  padding: 12px;
  overflow: auto;
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 42, 0.72);
  color: #f8fafc;
  font-family: var(--mono);
  line-height: 1.55;
  white-space: pre-wrap;
}

.csharp-console-output:empty {
  display: none;
}

.csharp-console-status {
  margin-top: 12px;
}

.result-footnote {
  margin: 12px 0 0;
  color: rgba(243, 245, 249, 0.8);
  font-size: 0.9rem;
}

.completion-panel {
  background: rgba(255, 252, 245, 0.88);
}

.review-summary-grid,
.results-grid,
.admin-card-grid,
.admin-callout-grid,
.variation-grid,
.project-file-grid {
  display: grid;
  gap: 16px;
}

.review-summary-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.review-summary-card,
.variation-card,
.compact-card,
.project-file-card {
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
}

.project-timeline {
  display: grid;
  gap: 10px;
}

.timeline-item {
  display: grid;
  grid-template-columns: minmax(110px, 150px) minmax(0, 1fr) auto;
  align-items: start;
  gap: 14px;
  padding: 14px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.84);
}

.timeline-item.is-next {
  border-color: rgba(15, 118, 110, 0.38);
  background: rgba(15, 118, 110, 0.08);
}

.timeline-item.no-school {
  color: var(--muted);
  background: rgba(30, 34, 48, 0.05);
}

.timeline-item.is-past:not(.is-next) {
  opacity: 0.72;
}

.timeline-date {
  display: grid;
  gap: 4px;
  font-family: var(--mono);
}

.timeline-date span {
  color: var(--muted);
}

.timeline-item h3,
.timeline-item p {
  margin-bottom: 4px;
}

.project-file-grid {
  grid-template-columns: 1fr;
}

.project-lock-panel {
  display: grid;
  min-height: 220px;
  place-items: center;
  text-align: center;
}

.project-lock-panel h2 {
  max-width: 720px;
  margin: 0;
}

.single-source-grid .project-file-card {
  padding: 14px;
}

.project-code-editor {
  min-height: 72vh;
  margin-top: 12px;
  background: #121a27;
  color: #f4f7fb;
  border-color: rgba(255, 255, 255, 0.08);
  font-family: var(--mono);
  font-size: 0.95rem;
}

.code-editor-shell {
  --line-number-gutter: 4ch;
  position: relative;
  margin-top: 12px;
}

.code-editor-shell textarea[data-csharp-code-editor],
.code-editor-shell textarea[data-python-code-editor] {
  position: relative;
  z-index: 4;
  margin-top: 0;
  background: transparent;
  color: transparent;
  caret-color: #f8fafc;
  -webkit-text-fill-color: transparent;
  overflow: auto;
  font-family: var(--mono);
  font-size: 0.95rem;
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0;
  line-height: 1.55;
  padding: 13px 14px 13px calc(var(--line-number-gutter) + 22px);
  tab-size: 4;
  white-space: pre;
  overflow-wrap: normal;
  word-break: normal;
  -webkit-user-select: text;
  user-select: text;
}

.code-editor-shell textarea[data-csharp-code-editor]::selection,
.code-editor-shell textarea[data-python-code-editor]::selection {
  background: transparent;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

@-moz-document url-prefix() {
  .code-editor-shell textarea[data-csharp-code-editor],
  .code-editor-shell textarea[data-python-code-editor] {
    color: rgba(248, 250, 252, 0.015);
    -webkit-text-fill-color: rgba(248, 250, 252, 0.015);
  }
}

.code-editor-watermark {
  position: absolute;
  z-index: 2;
  inset: 1px;
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 58px 42px;
  align-content: start;
  padding: 52px 12px 52px calc(var(--line-number-gutter) + 28px);
  overflow: hidden;
  border-radius: var(--radius-md);
  color: rgba(226, 232, 240, 0.075);
  font-family: var(--mono);
  font-size: clamp(1.8rem, 4vw, 3.8rem);
  font-weight: 800;
  letter-spacing: 0.18em;
  line-height: 1;
  pointer-events: none;
  text-transform: uppercase;
  user-select: none;
}

.code-editor-watermark span {
  display: inline-block;
  transform: rotate(-28deg);
  transform-origin: center;
  white-space: nowrap;
}

.code-highlight {
  position: absolute;
  z-index: 1;
  inset: 0;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(90deg, rgba(20, 184, 166, 0.07) 0 1px, transparent 1px 100%),
    #121a27;
  background-size: 3ch 100%, auto;
  color: #dbe7f3;
  padding: 13px 14px 13px calc(var(--line-number-gutter) + 22px);
  font-family: var(--mono);
  font-size: 0.95rem;
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0;
  line-height: 1.55;
  pointer-events: none;
  tab-size: 4;
  white-space: pre;
  overflow-wrap: normal;
  word-break: normal;
}

.code-highlight code,
.code-highlight span {
  font: inherit;
  line-height: inherit;
}

.code-highlight code {
  display: block;
  transform-origin: top left;
  will-change: transform;
}

.code-line-numbers {
  position: absolute;
  z-index: 5;
  inset: 1px auto 1px 1px;
  width: var(--line-number-gutter);
  margin: 0;
  padding: 13px 8px 13px 0;
  overflow: hidden;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  border-right: 1px solid rgba(125, 211, 252, 0.22);
  background:
    linear-gradient(180deg, rgba(15, 23, 42, 0.98), rgba(20, 33, 48, 0.96));
  color: rgba(203, 213, 225, 0.62);
  font-family: var(--mono);
  font-size: 0.95rem;
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0;
  line-height: 1.55;
  pointer-events: none;
  text-align: right;
  user-select: none;
}

.token-keyword {
  color: #7dd3fc;
}

.token-type {
  color: #facc15;
}

.token-string {
  color: #86efac;
}

.token-number {
  color: #f0abfc;
}

.token-comment {
  color: #94a3b8;
}

.csharp-stdin-editor {
  min-height: 96px;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 0.95rem;
}

.autosave-status {
  min-height: 1.35em;
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

.autosave-status[data-state="saving"] {
  color: #0f766e;
}

.autosave-status[data-state="error"] {
  color: var(--danger);
}

.credential-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.credential-card {
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
}

.credential-card strong {
  display: block;
  margin-top: 6px;
  overflow-wrap: anywhere;
  font-family: var(--mono);
}

.student-db-table-list {
  display: grid;
  gap: 18px;
}

.student-db-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.72);
}

.student-db-action {
  margin-top: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.82);
}

.student-db-action summary {
  cursor: pointer;
  font-weight: 800;
}

.student-db-action form {
  margin-top: 14px;
}

.student-db-column-builder {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.student-db-mini-action {
  min-width: 220px;
}

.student-db-mini-action summary {
  cursor: pointer;
  color: var(--accent-deep);
  font-weight: 800;
}

.student-db-mini-action form {
  margin-top: 12px;
}

.student-db-delete-form {
  display: flex;
  justify-content: flex-start;
  margin-top: 12px;
}

.student-db-row-editor-list {
  display: grid;
  gap: 14px;
  margin-top: 14px;
}

.student-db-row-editor {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.88);
}

.student-db-row-title {
  margin-bottom: 10px;
}

.danger-zone {
  border-color: rgba(180, 83, 9, 0.24);
  background: rgba(255, 247, 237, 0.78);
}

.student-db-preview {
  margin-top: 18px;
}

.student-db-preview h4 {
  margin-bottom: 10px;
}

.project-code-preview {
  min-height: 260px;
  max-height: 560px;
  margin: 12px 0 0;
  padding: 14px;
  overflow: auto;
  border-radius: var(--radius-md);
  background: #121a27;
  color: #f4f7fb;
  font-family: var(--mono);
  font-size: 0.95rem;
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0;
  line-height: 1.55;
  tab-size: 4;
  white-space: pre;
}

.live-code-preview-shell {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  min-height: 260px;
  max-height: 560px;
  margin: 12px 0 0;
  overflow: auto;
  border-radius: var(--radius-md);
  background: #121a27;
  color: #f4f7fb;
  font-family: var(--mono);
  font-size: 0.95rem;
  line-height: 1.55;
}

.live-code-preview-shell .project-code-preview {
  min-height: 100%;
  max-height: none;
  margin: 0;
  padding: 14px;
  overflow: visible;
  border-radius: 0;
  background: transparent;
}

.live-code-line-numbers {
  position: sticky;
  left: 0;
  z-index: 1;
  min-height: 100%;
  margin: 0;
  padding: 14px 10px 14px 12px;
  border-right: 1px solid rgba(125, 211, 252, 0.22);
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.98), rgba(20, 33, 48, 0.96));
  color: rgba(203, 213, 225, 0.64);
  font-family: var(--mono);
  font-size: 0.95rem;
  line-height: 1.55;
  pointer-events: none;
  text-align: right;
  user-select: none;
  white-space: pre;
}

[data-project-file-status][data-status="loading"] {
  color: #835100;
}

[data-project-file-status][data-status="success"],
[data-admin-live-status][data-status="success"] {
  color: var(--accent-deep);
}

[data-project-file-status][data-status="error"],
[data-admin-live-status][data-status="error"] {
  color: var(--danger);
}

.snapshot-panel {
  margin-top: 18px;
}

.compact-panel-header {
  margin-bottom: 8px;
}

.snapshot-list {
  display: grid;
  gap: 10px;
}

.snapshot-details .project-code-preview {
  max-height: 360px;
}

@media print {
  .project-workspace,
  .project-code-preview,
  .project-code-editor {
    display: none !important;
  }

  body::before {
    display: block;
    padding: 24px;
    color: #92400e;
    font-weight: 800;
    content: "Ausdrucke und Screenshots sind für diese Bearbeitung nicht vorgesehen.";
  }
}

.summary-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.review-feedback-box {
  margin-top: 14px;
}

.review-meta-row {
  margin-bottom: 14px;
}

.inline-link {
  color: var(--accent-deep);
  font-weight: 700;
  text-decoration: none;
}

.inline-link:hover,
.toolbar-link:hover,
.ghost-button:hover {
  text-decoration: underline;
}

.inline-form {
  margin: 0;
}

.inline-select-form {
  display: inline-flex;
  align-items: center;
}

.admin-row-form {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.admin-row-form select {
  width: auto;
  min-width: 130px;
}

.stacked-row-form {
  display: grid;
  gap: 10px;
  min-width: 180px;
}

.notice-card {
  padding: 18px;
}

.compact-card {
  min-height: 100%;
}

.support-note {
  margin: 0;
}

.admin-details {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.74);
}

.admin-details + .admin-details {
  margin-top: 14px;
}

.admin-details summary {
  padding: 16px 18px;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

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

.admin-details[open] summary {
  border-bottom: 1px solid var(--line);
}

.admin-details > *:not(summary) {
  padding: 18px;
}

.variation-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.auth-shell {
  width: min(560px, calc(100% - 28px));
  margin: 0 auto;
  padding: 46px 0 56px;
}

.auth-card {
  position: relative;
  overflow: hidden;
}

.auth-card::after {
  content: "";
  position: absolute;
  inset: auto -90px -110px auto;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(217, 119, 6, 0.22), rgba(217, 119, 6, 0.03));
}

.auth-title {
  max-width: none;
  font-size: clamp(2rem, 5vw, 2.8rem);
}

.auth-links {
  margin-top: 14px;
}

.sandbox-frame {
  position: absolute;
  width: 0;
  height: 0;
  border: 0;
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 900px) {
  .page-shell {
    width: min(100%, calc(100% - 20px));
    padding-top: 16px;
  }

  .toolbar,
  .hero-panel,
  .task-panel,
  .auth-card {
    padding: 20px;
  }

  .toolbar {
    position: static;
    flex-direction: column;
    align-items: flex-start;
  }

  .toolbar-actions,
  .panel-header,
  .summary-topline,
  .sample-table-header,
  .submenu-nav {
    width: 100%;
  }

  .panel-header,
  .summary-topline {
    flex-direction: column;
    align-items: flex-start;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(1.9rem, 9vw, 3.2rem);
  }

  .header-badges,
  .toolbar-actions {
    justify-content: flex-start;
  }

  .timer-badge {
    width: 100%;
    justify-content: space-between;
  }

  .class-switcher {
    width: 100%;
    grid-template-columns: 1fr;
  }

  .class-switcher select,
  .class-switcher-button {
    width: 100%;
  }

  .admin-form-grid,
  .review-summary-grid,
  .variation-grid,
  .timeline-item {
    grid-template-columns: 1fr;
  }

  .admin-row-form {
    align-items: stretch;
  }

  .admin-row-form select,
  .admin-row-form .secondary-button,
  .stacked-row-form {
    width: 100%;
  }
}

@media (max-width: 640px) {
  body {
    background:
      radial-gradient(circle at top left, rgba(15, 118, 110, 0.12), transparent 24%),
      linear-gradient(180deg, #fbf8f2 0%, var(--bg) 55%, var(--bg-deep) 100%);
  }

  .page-shell,
  .auth-shell {
    width: calc(100% - 16px);
  }

  .toolbar,
  .hero-panel,
  .task-panel,
  .auth-card {
    border-radius: 22px;
    padding: 16px;
  }

  .toolbar-link,
  .ghost-button,
  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .button-row,
  .admin-inline-actions {
    align-items: stretch;
  }

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

  .table-wrap {
    border-radius: var(--radius-md);
  }

  th,
  td {
    padding: 10px 11px;
    font-size: 0.86rem;
  }

  textarea[data-answer-input] {
    min-height: 220px;
  }
}