/* Copyright 2026 - Gebruik vrij voor educatie mits expliciete naamsvermelding */
/* Auteur: Robbe Wulgaert / aiindeklas.be */
:root {
  --brand-purple: #5200ff;
  --brand-purple-dark: #3700b3;
  --brand-aqua: #3dffd0;
  --brand-white: #ffffff;
  --bg: #f3f5f8;
  --panel: #f7f8fa;
  --ink: #23272e;
  --muted: #8f98a6;
  --border: #ececf3;
  --shadow: 0 2px 12px rgba(82, 0, 255, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: #fff;
  color: var(--ink);
  font-family: "Roboto", Arial, Helvetica, sans-serif;
}

body {
  display: flex;
  flex-direction: column;
}

.topbar,
.editor-pane,
.assignment-pane,
.main-layout,
.modal-box,
.toolbar button,
.exercise-btn,
.course-menu,
.course-loading,
.status-pill,
.splitter {
  transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.course-loading {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background:
    radial-gradient(circle at 16% 12%, rgba(61, 255, 208, 0.22), transparent 26rem),
    radial-gradient(circle at 84% 10%, rgba(82, 0, 255, 0.20), transparent 28rem),
    rgba(247, 248, 250, 0.94);
  backdrop-filter: blur(10px);
  transition: opacity 0.24s ease, visibility 0.24s ease;
}

.course-loading.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.course-loading-card {
  width: min(460px, 100%);
  border: 1.5px solid rgba(82, 0, 255, 0.18);
  border-radius: 24px;
  background: #fff;
  color: var(--ink);
  box-shadow: 0 22px 70px rgba(35, 39, 46, 0.18);
  padding: 1.6rem;
  text-align: center;
}

.course-loading-mark {
  width: 82px;
  height: 82px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.08em;
  background: linear-gradient(135deg, var(--brand-purple), var(--brand-aqua));
  box-shadow: 0 12px 35px rgba(82, 0, 255, 0.25);
  position: relative;
  isolation: isolate;
}

.course-loading-mark::before,
.course-loading-mark::after {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.42);
  border-top-color: #fff;
  animation: courseSpin 1.05s linear infinite;
  z-index: -1;
}

.course-loading-mark::after {
  inset: 20px;
  border-color: rgba(255, 255, 255, 0.30);
  border-bottom-color: #fff;
  animation-direction: reverse;
  animation-duration: 1.4s;
}

.course-loading h2 {
  margin: 0 0 0.45rem;
  color: var(--brand-purple);
  font-size: 1.55rem;
  line-height: 1.15;
}

.course-loading-message {
  margin: 0;
  color: var(--ink);
  font-weight: 800;
  line-height: 1.45;
}

.course-loading-detail {
  min-height: 1.35em;
  margin: 0.65rem 0 0;
  color: #647084;
  font-size: 0.94rem;
  line-height: 1.35;
}

.course-loading-track {
  height: 10px;
  margin-top: 1.1rem;
  border-radius: 999px;
  background: #ececf3;
  overflow: hidden;
}

.course-loading-bar {
  display: block;
  width: 8%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--brand-purple), var(--brand-aqua));
  transition: width 0.2s ease;
}

.course-loading.has-error .course-loading-mark,
.course-loading.has-error .course-loading-bar {
  background: #a91d1d;
}

.course-loading.has-error .course-loading-bar {
  width: 100% !important;
}

@keyframes courseSpin {
  to { transform: rotate(360deg); }
}

.topbar {
  width: 100%;
  border-bottom: 1.5px solid #eee;
  padding: 0.8rem 1rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
  overflow: hidden;
}

.opdracht {
  flex: 1 1 260px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
}

#opdracht-titel {
  font-size: 1.02rem;
}

#opdracht-tekst {
  color: var(--muted);
  font-size: 0.95rem;
}

.toolbar {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
  justify-content: flex-end;
  flex: 0 0 auto;
}

.brand-btn {
  background: var(--brand-purple);
  color: var(--brand-white);
  border: 1px solid var(--brand-purple);
  border-radius: 8px;
  padding: 0.6rem 0.95rem;
  font-size: 0.98rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(82, 0, 255, 0.1);
}

.brand-btn:hover,
.brand-btn:focus-visible {
  background: var(--brand-purple-dark);
  border-color: var(--brand-purple-dark);
  outline: none;
}

.secondary-btn {
  background: #fff;
  color: var(--brand-purple);
}

.secondary-btn:hover,
.secondary-btn:focus-visible {
  background: var(--brand-aqua);
  color: var(--brand-purple);
  border-color: var(--brand-aqua);
}

.run-btn {
  min-width: 135px;
}

.exercise-progress {
  display: flex;
  align-items: center;
  gap: 0.52rem;
  flex: 0 1 46%;
  min-width: 0;
  max-width: min(48vw, 760px);
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  padding: 0.05rem 0.1rem 0.18rem;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.exercise-progress::-webkit-scrollbar {
  height: 6px;
}

.exercise-progress::-webkit-scrollbar-thumb {
  background: #c7cde0;
  border-radius: 999px;
}

.exercise-progress::-webkit-scrollbar-track {
  background: transparent;
}

.exercise-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  min-width: 30px;
  min-height: 30px;
  aspect-ratio: 1 / 1;
  box-sizing: border-box;
  padding: 0;
  line-height: 1;
  border-radius: 50%;
  border: 0;
  background: var(--brand-purple);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  opacity: 0.7;
}

.exercise-btn.current {
  background: #fff;
  color: var(--brand-purple);
  border: 2px solid var(--brand-purple);
  opacity: 1;
  box-shadow: 0 0 0 3px #ece6fa;
}

.exercise-btn.theory {
  border: 2px dashed #ffffff;
}

.exercise-btn.theory.current {
  border: 2px dashed var(--brand-purple);
}

.exercise-btn.is-success {
  background: #3dffd0;
  color: #23272e;
  opacity: 1;
}

.exercise-btn.is-fail {
  background: #ff1744;
  color: #fff;
  opacity: 1;
}

.main-layout {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  background: var(--bg);
  overflow: hidden;
}

.editor-pane,
.assignment-pane {
  padding: 1.15rem;
  overflow: auto;
  min-width: 0;
  background: var(--panel);
}

.editor-pane {
  flex: 0 0 48%;
  border-radius: 0 0 0 18px;
}

.assignment-pane {
  flex: 1 1 auto;
  border-radius: 0 0 18px 0;
}

.pane-label {
  font-size: 1.07rem;
  color: var(--brand-purple);
  font-weight: 900;
  margin-bottom: 0.55rem;
  display: inline-block;
}

.console-label {
  font-size: 1.02rem;
  color: var(--brand-purple);
  font-weight: 900;
}

.runtime-input-wrap {
  margin-bottom: 0.75rem;
}

.runtime-input-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: #3f4351;
  margin-bottom: 0.35rem;
}

.runtime-input-label code {
  background: #efeafd;
  border-radius: 4px;
  padding: 1px 5px;
}

.runtime-input-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.runtime-input-field {
  flex: 1 1 auto;
  min-width: 0;
  border: 1.5px solid #d8d9e4;
  border-radius: 8px;
  padding: 0.56rem 0.68rem;
  font-size: 0.95rem;
}

.runtime-input-field:focus {
  outline: none;
  border-color: var(--brand-purple);
  box-shadow: 0 0 0 3px #ece6fa;
}

.runtime-input-send {
  min-width: 98px;
  padding: 0.54rem 0.82rem;
}

.runtime-input-status {
  margin-top: 0.45rem;
  font-size: 0.84rem;
  font-weight: 700;
}

.runtime-input-status.idle {
  color: #4f5766;
}

.runtime-input-status.waiting {
  color: #8a5c00;
}

.runtime-input-status.queued {
  color: #0b597d;
}

.runtime-input-status.sent {
  color: #0a6d57;
}

.runtime-input-status.error {
  color: #9d1b1b;
}

.runtime-input-field:disabled,
.runtime-input-send:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

#code-editor {
  height: 360px;
  border: 1.5px solid var(--brand-purple);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.CodeMirror {
  height: 100%;
  font-size: 15px;
  line-height: 1.42;
}

.metrics-row {
  margin-top: 0.75rem;
  display: flex;
  justify-content: flex-end;
}

#metrics {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.93rem;
}

.assignment-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.6rem;
}

.status-pill {
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 700;
}

.status-pill.idle {
  background: #ececf3;
  color: #444;
}

.status-pill.busy {
  background: #fff3cd;
  color: #7f5b00;
}

.status-pill.ready {
  background: #e8fff6;
  color: #0a6d57;
}

.status-pill.error {
  background: #ffe8eb;
  color: #a1142b;
}

.console-output {
  background: #161820;
  color: #fff;
  min-height: 130px;
  border-radius: 8px;
  padding: 0.9rem 1rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.96rem;
  white-space: pre-wrap;
  word-break: break-word;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  border: 1px solid #161820;
}

.assignment-card {
  margin-top: 0.2rem;
  min-height: 520px;
  border: 1.5px solid var(--brand-purple);
  border-radius: 8px;
  padding: 1rem 1rem 0.7rem;
  background: #fff;
}

#assignment-title {
  margin: 0 0 0.95rem;
  color: var(--brand-purple);
  font-size: 1.08rem;
}

.assignment-block {
  margin-bottom: 1rem;
  border-top: 1px solid #ececf3;
  padding-top: 0.7rem;
}

.assignment-block h3 {
  margin: 0 0 0.45rem;
  font-size: 0.97rem;
  color: #3f4351;
}

.assignment-block ul {
  margin: 0;
  padding-left: 1.1rem;
  line-height: 1.45;
  color: #2e3340;
}

.assignment-block li {
  margin-bottom: 0.3rem;
}

.assignment-markdown {
  margin: 0;
  background: #f9f9ff;
  border: 1px solid #ececf3;
  border-radius: 8px;
  padding: 0.8rem 0.9rem;
  font-family: "Roboto", Arial, Helvetica, sans-serif;
  font-size: 0.94rem;
  line-height: 1.5;
  color: #2e3340;
  overflow: auto;
}

.assignment-markdown > :first-child {
  margin-top: 0;
}

.assignment-markdown > :last-child {
  margin-bottom: 0;
}

.assignment-markdown h1,
.assignment-markdown h2,
.assignment-markdown h3,
.assignment-markdown h4 {
  color: var(--brand-purple);
  margin: 0.2rem 0 0.6rem;
}

.assignment-markdown p,
.assignment-markdown ul,
.assignment-markdown ol,
.assignment-markdown pre,
.assignment-markdown blockquote {
  margin: 0 0 0.75rem;
}

.assignment-markdown ul,
.assignment-markdown ol {
  padding-left: 1.2rem;
}

.assignment-markdown code {
  background: #ede9fe;
  border-radius: 4px;
  padding: 1px 5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

.assignment-markdown pre {
  background: #161820;
  color: #fff;
  border-radius: 8px;
  padding: 0.7rem 0.8rem;
  overflow: auto;
}

.assignment-markdown pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.assignment-markdown blockquote {
  margin-left: 0;
  padding-left: 0.75rem;
  border-left: 3px solid var(--brand-purple);
  color: #495066;
}

.assignment-markdown a {
  color: #1f4fdb;
  text-decoration: underline;
}

.assignment-media-image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0.55rem auto;
  border-radius: 8px;
  border: 1px solid #d9dce8;
  background: #fff;
}

.assignment-media-embed {
  margin: 0.7rem 0;
}

.assignment-media-iframe {
  width: 100%;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 10px;
  display: block;
  background: #000;
}

.assignment-media-link {
  display: inline-block;
  margin-top: 0.35rem;
  font-size: 0.85rem;
}

.splitter {
  width: 8px;
  min-width: 8px;
  cursor: col-resize;
  background: linear-gradient(to right, #ececec 0%, #d8d8d8 100%);
}

.splitter.dragging {
  background: linear-gradient(to right, #b7b7ff 0%, var(--brand-purple) 100%);
}

.help-btn {
  position: fixed;
  right: 32px;
  bottom: 32px;
  z-index: 1200;
  width: 54px;
  height: 54px;
  border: 0;
  border-radius: 999px;
  background: var(--brand-purple);
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(82, 0, 255, 0.11);
}

.help-btn:hover {
  background: var(--brand-purple-dark);
}

.course-menu {
  position: fixed;
  top: 0;
  right: -340px;
  width: 320px;
  max-width: 95vw;
  height: 100vh;
  background: var(--brand-purple);
  color: #fff;
  z-index: 1500;
  border-radius: 16px 0 0 16px;
  box-shadow: -3px 0 24px rgba(0, 0, 0, 0.1);
}

.course-menu.open {
  right: 0;
}

.menu-tab {
  position: fixed;
  top: 46%;
  right: 0;
  background: var(--brand-purple);
  color: #fff;
  font-size: 1.12rem;
  font-weight: 900;
  border: none;
  border-radius: 14px 0 0 14px;
  box-shadow: -1px 2px 10px rgba(0, 0, 0, 0.07);
  padding: 1rem 1.3rem 1rem 1.1rem;
  cursor: pointer;
  z-index: 1510;
  letter-spacing: 1px;
  writing-mode: vertical-lr;
}

.menu-tab:hover {
  background: var(--brand-aqua);
  color: var(--brand-purple);
}

.menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 1rem 1rem 1.1rem;
  border-bottom: 1px solid #ffffff3a;
}

.menu-title {
  font-size: 1.26rem;
  font-weight: 900;
}

.close-menu {
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
}

.menu-content {
  padding: 1rem 1.15rem;
  overflow-y: auto;
  height: calc(100vh - 70px);
  display: flex;
  flex-direction: column;
}

.menu-content h3 {
  margin-top: 0;
  margin-bottom: 0.8rem;
}

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

.chapter-list li {
  list-style: none;
}

.menu-chapter-group {
  border-radius: 10px;
  border: 1px solid #ffffff2a;
  background: #ffffff14;
  padding: 0.35rem;
}

.menu-accordion-btn {
  width: 100%;
  border: 0;
  border-radius: 8px;
  background: #ffffff1f;
  color: #fff;
  padding: 0.52rem 0.58rem;
  display: flex;
  align-items: center;
  gap: 0.52rem;
  text-align: left;
  cursor: pointer;
}

.menu-accordion-btn:hover {
  background: #ffffff2d;
}

.menu-toggle-symbol {
  width: 1.15rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1rem;
  line-height: 1;
}

.menu-toggle-label {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.menu-toggle-count {
  flex: 0 0 auto;
  font-size: 0.83rem;
  font-weight: 700;
  color: #e9e5ff;
  background: #ffffff20;
  border-radius: 999px;
  padding: 1px 8px;
}

.menu-chapter-toggle {
  font-weight: 800;
  background: #ffffff30;
}

.menu-chapter-toggle[aria-expanded="true"] {
  background: #ffffff3b;
}

.menu-subchapter-list {
  list-style: none;
  margin: 0.45rem 0 0.1rem;
  padding: 0 0 0 0.52rem;
  border-left: 1px solid #ffffff36;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.menu-subchapter-group {
  margin: 0;
}

.menu-subchapter-toggle {
  font-size: 0.95rem;
  font-weight: 600;
}

.menu-subchapter-toggle.active {
  background: #3dffd0;
  color: #2b1a89;
  font-weight: 800;
}

.menu-subchapter-toggle.active .menu-toggle-count {
  background: #2b1a8933;
  color: #2b1a89;
}

.menu-exercise-list {
  list-style: none;
  margin: 0.32rem 0 0.1rem;
  padding: 0 0 0 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
}

.menu-exercise-item {
  width: 100%;
  border: 0;
  border-radius: 7px;
  background: #ffffff16;
  color: #fff;
  text-align: left;
  font-size: 0.88rem;
  padding: 0.38rem 0.45rem;
  cursor: pointer;
}

.menu-exercise-item:hover {
  background: #ffffff28;
}

.menu-exercise-item.active {
  background: #fff;
  color: var(--brand-purple);
  font-weight: 700;
}

.menu-exercise-item.is-success {
  border-left: 4px solid #3dffd0;
  padding-left: 0.36rem;
}

.menu-exercise-item.is-fail {
  border-left: 4px solid #ff8fa3;
  padding-left: 0.36rem;
}

.menu-exercise-item.theory {
  opacity: 0.88;
  font-style: italic;
}

.menu-note {
  color: #f1efff;
  font-size: 0.92rem;
  line-height: 1.4;
}

.menu-note code {
  background: #ffffff24;
  border-radius: 4px;
  padding: 1px 4px;
}

.menu-project-panel {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid #ffffff4a;
}

.menu-project-details {
  border: 1px solid #ffffff3f;
  border-radius: 10px;
  background: #ffffff1a;
  overflow: hidden;
}

.menu-project-details > summary {
  cursor: pointer;
  padding: 0.62rem 0.68rem;
  font-weight: 800;
  list-style: none;
  user-select: none;
}

.menu-project-details > summary::-webkit-details-marker {
  display: none;
}

.menu-project-details > summary::after {
  content: "+";
  float: right;
  font-weight: 900;
}

.menu-project-details[open] > summary {
  background: #ffffff28;
}

.menu-project-details[open] > summary::after {
  content: "−";
}

.menu-project-body {
  border-top: 1px solid #ffffff2c;
  padding: 0.7rem 0.72rem 0.76rem;
  font-size: 0.89rem;
  line-height: 1.45;
  color: #f6f5ff;
}

.menu-project-body p {
  margin: 0 0 0.6rem;
}

.menu-project-body p:last-child {
  margin-bottom: 0;
}

.menu-project-body a {
  color: #3dffd0;
  text-decoration: underline;
  font-weight: 700;
}

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.44);
}

.modal.open {
  display: flex;
}

.modal-box {
  background: #fff;
  color: var(--ink);
  border-radius: 14px;
  min-width: 320px;
  max-width: min(94vw, 760px);
  padding: 1.6rem 1.6rem 1.2rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
  position: relative;
}

.help-box {
  width: min(96vw, 1180px);
  max-width: min(96vw, 1180px);
  max-height: 85vh;
  overflow-y: auto;
}

.help-box h2 {
  color: var(--brand-purple);
  margin-top: 0;
}

.help-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.help-section {
  border: 1px solid #d7dbe8;
  border-radius: 14px;
  background: linear-gradient(180deg, #fff, #fbfbff);
  padding: 0.95rem;
  box-shadow: 0 8px 22px rgba(35, 39, 46, 0.06);
}

.help-section-wide {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, #f7fff9, #fff);
  border-color: #bfead2;
}

.help-section h3 {
  margin: 0 0 0.62rem;
  color: var(--brand-purple);
  font-size: 1rem;
}

.help-section ul {
  margin: 0;
  padding-left: 1.1rem;
  line-height: 1.45;
  color: #2e3340;
}

.help-section li {
  margin: 0 0 0.35rem;
}

.help-section li:last-child {
  margin-bottom: 0;
}

.help-section pre {
  margin: 0.75rem 0 0;
  border-radius: 10px;
  background: #161820;
  color: #fff;
  padding: 0.72rem 0.78rem;
  overflow: auto;
  font-size: 0.86rem;
  line-height: 1.45;
}

.help-section pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.help-legacy-table {
  margin-top: 1rem;
  border: 1px solid #d7dbe8;
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
}

.help-legacy-table > summary {
  cursor: pointer;
  padding: 0.76rem 0.9rem;
  color: var(--brand-purple);
  font-weight: 900;
  user-select: none;
}

.help-legacy-table .help-table-wrap {
  border-left: 0;
  border-right: 0;
  border-bottom: 0;
  border-radius: 0;
}

.help-table-wrap {
  overflow: auto;
  border: 1px solid #d7dbe8;
  border-radius: 10px;
  background: #fff;
}

.help-table {
  width: 100%;
  min-width: 860px;
  border-collapse: collapse;
  font-size: 0.9rem;
  line-height: 1.45;
}

.help-table th,
.help-table td {
  border: 1px solid #d7dbe8;
  padding: 0.52rem 0.56rem;
  vertical-align: top;
}

.help-table th {
  background: #e8ebf4;
  color: #23272e;
  font-weight: 900;
  text-align: left;
}

.help-table td {
  background: #fff;
  color: #2e3340;
}

.help-box code {
  background: #f2f0fd;
  border-radius: 5px;
  padding: 2px 6px;
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 12px;
  border: 0;
  background: transparent;
  color: #333;
  font-size: 1.7rem;
  cursor: pointer;
}

.modal-message {
  margin-top: 0.25rem;
  margin-bottom: 0.6rem;
}

.modal-input {
  width: 100%;
  border: 1px solid #d4d8e1;
  border-radius: 8px;
  padding: 0.62rem 0.7rem;
  font-size: 1rem;
}

.modal-actions {
  margin-top: 0.9rem;
  display: flex;
  justify-content: flex-end;
}

.pdf-modal-box {
  max-width: min(94vw, 560px);
}

.pdf-modal-box h3 {
  margin: 0 0 0.5rem;
  color: var(--brand-purple);
}

.pdf-modal-intro {
  margin: 0 0 0.8rem;
  color: #4c5364;
  font-size: 0.93rem;
}

.pdf-form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.38rem;
}

.pdf-form-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: #3f4657;
  margin-top: 0.25rem;
}

.pdf-modal-actions {
  gap: 0.45rem;
  flex-wrap: wrap;
}

.reset-modal-box {
  max-width: min(94vw, 560px);
}

.reset-modal-box h3 {
  margin: 0 0 0.4rem;
  color: var(--brand-purple);
}

.reset-modal-actions {
  gap: 0.45rem;
  flex-wrap: wrap;
}

.eval-modal-box {
  max-width: min(96vw, 980px);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
}

.eval-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  margin-bottom: 0.5rem;
  padding-right: 1.8rem;
}

.eval-modal-header h3 {
  margin: 0;
  color: var(--brand-purple);
}

.eval-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.2rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 800;
}

.eval-pill.ok {
  background: #e8fff6;
  color: #0a6d57;
  border: 1px solid #9be8ce;
}

.eval-pill.fail {
  background: #ffe8eb;
  color: #a1142b;
  border: 1px solid #f3a4b2;
}

.eval-pill.error {
  background: #fff5d9;
  color: #7f5b00;
  border: 1px solid #eacc7a;
}

.eval-summary {
  margin: 0 0 0.85rem;
  line-height: 1.45;
}

.eval-cases {
  border: 1px solid #dfe3ee;
  border-radius: 10px;
  background: #f7f9ff;
  padding: 0.7rem;
  overflow: auto;
  min-height: 120px;
  max-height: 56vh;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.eval-case {
  border: 1px solid #d5dbea;
  background: #fff;
  border-radius: 8px;
  padding: 0.55rem 0.62rem;
}

.eval-case.pass {
  border-left: 4px solid #32bf93;
}

.eval-case.fail {
  border-left: 4px solid #dc4666;
}

.eval-case-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.eval-case-title {
  font-size: 0.9rem;
  font-weight: 700;
}

.eval-case-badge {
  font-size: 0.78rem;
  font-weight: 800;
  border-radius: 999px;
  padding: 0.12rem 0.6rem;
}

.eval-case-badge.pass {
  background: #e8fff6;
  color: #0a6d57;
}

.eval-case-badge.fail {
  background: #ffe8eb;
  color: #a1142b;
}

.eval-case details {
  margin-top: 0.42rem;
}

.eval-case details > summary {
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 700;
  color: #444b5c;
  user-select: none;
}

.eval-case-grid {
  margin-top: 0.45rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
}

.eval-case-kv {
  border: 1px solid #e6eaf3;
  border-radius: 7px;
  background: #fbfcff;
  padding: 0.42rem 0.45rem;
}

.eval-case-kv-label {
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #555f76;
  margin-bottom: 0.2rem;
}

.eval-case-text {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.82rem;
  line-height: 1.4;
  color: #1f2430;
}

.eval-case-note {
  font-size: 0.82rem;
  color: #4a4f5c;
}

.eval-modal-truncated {
  margin-top: 0.2rem;
  font-size: 0.82rem;
  color: #5a647d;
  font-style: italic;
}

.eval-all-cases {
  border: 1px solid #cfd8eb;
  border-radius: 8px;
  background: #f0f4ff;
}

.eval-all-cases > summary {
  cursor: pointer;
  user-select: none;
  font-size: 0.86rem;
  font-weight: 800;
  color: #2e3750;
  padding: 0.5rem 0.62rem;
}

.eval-all-cases-content {
  border-top: 1px solid #d7deef;
  padding: 0.45rem;
}

.eval-all-cases-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  display: none;
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  font-weight: 700;
  z-index: 2400;
  max-width: min(90vw, 640px);
  text-align: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.16);
}

.toast.ok {
  display: block;
  background: #e8fff6;
  color: #0a6d57;
}

.toast.error {
  display: block;
  background: #ffe8eb;
  color: #a1142b;
}

body.dark {
  background: #161820;
  color: #fff;
}

body.dark .topbar {
  background: #23272e;
  border-bottom-color: #333;
}

body.dark .main-layout {
  background: #23272e;
}

body.dark .editor-pane,
body.dark .assignment-pane {
  background: #23272e;
}

body.dark .pane-label {
  color: #fff;
}

body.dark #opdracht-tekst {
  color: #d7d7df;
}

body.dark .runtime-input-label {
  color: #e3e7f0;
}

body.dark .runtime-input-label code {
  background: #3a4052;
}

body.dark .runtime-input-field {
  background: #fff;
  color: #222;
  border-color: #b7bfd3;
}

body.dark .console-output {
  background: #fff;
  color: #23272e;
  border-color: #fff;
}

body.dark .assignment-card {
  background: #202431;
  border-color: #4a3eb5;
}

body.dark #assignment-title {
  color: #fff;
}

body.dark .assignment-block {
  border-top-color: #373c4d;
}

body.dark .assignment-block h3,
body.dark .assignment-block ul {
  color: #e3e7f0;
}

body.dark .assignment-markdown {
  background: #171a24;
  border-color: #373c4d;
  color: #e3e7f0;
}

body.dark .assignment-markdown h1,
body.dark .assignment-markdown h2,
body.dark .assignment-markdown h3,
body.dark .assignment-markdown h4 {
  color: #cfc9ff;
}

body.dark .assignment-markdown code {
  background: #3a4052;
}

body.dark .assignment-markdown pre {
  background: #0e1017;
}

body.dark .assignment-markdown blockquote {
  border-left-color: #9f8cff;
  color: #d4dbef;
}

body.dark .assignment-markdown a {
  color: #8bb3ff;
}

body.dark .assignment-media-image {
  border-color: #4a4f62;
  background: #0e1017;
}

body.dark .brand-btn {
  background: #fff;
  color: var(--brand-purple);
  border-color: var(--brand-purple);
}

body.dark .brand-btn:hover,
body.dark .brand-btn:focus-visible {
  background: var(--brand-aqua);
  border-color: var(--brand-aqua);
}

body.dark .modal-box {
  background: #2b3040;
  color: #fff;
}

body.dark .modal-input {
  background: #fff;
  color: #222;
}

body.dark .pdf-modal-box h3 {
  color: #fff;
}

body.dark .reset-modal-box h3 {
  color: #fff;
}

body.dark .pdf-modal-intro,
body.dark .pdf-form-label {
  color: #d5def2;
}

body.dark .help-box h2 {
  color: #fff;
}

body.dark .help-section {
  background: #22293a;
  border-color: #454d63;
  box-shadow: none;
}

body.dark .help-section-wide {
  background: #1f302e;
  border-color: #315f57;
}

body.dark .help-section h3 {
  color: #fff;
}

body.dark .help-section ul {
  color: #dbe4fb;
}

body.dark .help-legacy-table {
  background: #22293a;
  border-color: #454d63;
}

body.dark .help-legacy-table > summary {
  color: #c6fff1;
}

body.dark .help-table-wrap {
  border-color: #454d63;
  background: #22293a;
}

body.dark .help-table th,
body.dark .help-table td {
  border-color: #454d63;
}

body.dark .help-table th {
  background: #2f364a;
  color: #e9eefc;
}

body.dark .help-table td {
  background: #22293a;
  color: #dbe4fb;
}

body.dark .help-box code {
  background: #3a4052;
}

body.dark .eval-modal-header h3 {
  color: #fff;
}

body.dark .eval-cases {
  background: #1d2230;
  border-color: #394055;
}

body.dark .eval-case {
  background: #252b3b;
  border-color: #434b63;
}

body.dark .eval-case details > summary {
  color: #e2e6f0;
}

body.dark .eval-case-kv {
  background: #1e2433;
  border-color: #394156;
}

body.dark .eval-case-kv-label {
  color: #c8d1e6;
}

body.dark .eval-case-text {
  color: #f4f7ff;
}

body.dark .eval-case-note,
body.dark .eval-modal-truncated {
  color: #d0d8eb;
}

body.dark .eval-all-cases {
  background: #1e2534;
  border-color: #3f4963;
}

body.dark .eval-all-cases > summary {
  color: #e7ecf8;
}

body.dark .eval-all-cases-content {
  border-top-color: #3f4963;
}

@media (max-width: 1020px) {
  .main-layout {
    flex-direction: column;
    gap: 1rem;
    padding-bottom: 1rem;
  }

  .editor-pane,
  .assignment-pane {
    width: 100%;
    border-radius: 14px;
  }

  #code-editor,
  .console-output {
    min-height: 320px;
  }

  .assignment-card {
    min-height: 320px;
  }

  .splitter {
    display: none;
  }

  .menu-tab {
    display: none;
  }

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

@media (max-width: 720px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .exercise-progress {
    flex: 1 1 auto;
    max-width: none;
    width: 100%;
  }

  .toolbar {
    justify-content: flex-start;
  }

  .help-btn {
    right: 16px;
    bottom: 16px;
  }

  .help-box {
    padding: 1.15rem 1rem 0.95rem;
  }

  .help-section-wide {
    grid-column: auto;
  }
}