:root {
  color-scheme: dark;
  --cs-bg: #050b15;
  --cs-panel: rgba(10, 21, 37, 0.76);
  --cs-panel-deep: rgba(7, 17, 31, 0.74);
  --cs-panel-soft: rgba(13, 25, 42, 0.76);
  --cs-border: #21344f;
  --cs-border-soft: rgba(75, 107, 149, 0.3);
  --cs-text: #edf4ff;
  --cs-muted: #9aa9c1;
  --cs-blue: #4d78ff;
  --cs-blue-bright: #6b93ff;
  --cs-green: #35d08b;
  --cs-danger: #ff7c8b;
  --cs-radius: 15px;
  --cs-shadow: 0 16px 48px rgba(0, 0, 0, 0.22);
  font-family: Inter, "Aptos", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  min-height: 100%;
  margin: 0;
  color: var(--cs-text);
}

html { background: var(--cs-bg); }

body {
  position: relative;
  isolation: isolate;
  min-width: 320px;
  overflow: hidden;
  background: transparent;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(2, 7, 16, 0.66), rgba(2, 7, 16, 0.78)),
    url('/computing/assets/computing-background.jpg') center / cover no-repeat;
  content: "";
  filter: none;
}

button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 8px;
  left: 8px;
  transform: translateY(-160%);
  border-radius: 8px;
  padding: 10px 14px;
  background: #fff;
  color: #06101e;
}

.skip-link:focus { transform: none; }

.cs-topbar {
  position: relative;
  z-index: 20;
  display: flex;
  min-height: 70px;
  align-items: center;
  gap: 24px;
  padding: 0 30px;
  border-bottom: 1px solid rgba(68, 96, 132, 0.32);
  background: rgba(5, 12, 23, 0.64);
  -webkit-backdrop-filter: blur(6px) saturate(112%);
  backdrop-filter: blur(6px) saturate(112%);
}

.cs-brand {
  flex: none;
  text-decoration: none;
  font-size: 17px;
  font-weight: 760;
  letter-spacing: -0.02em;
}

.cs-primary-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cs-subject-pill,
.cs-nav-link {
  min-height: 42px;
  border: 0;
  border-radius: 9px;
  padding: 10px 15px;
  background: transparent;
  color: #c8d3e5;
  text-decoration: none;
  font-weight: 650;
  cursor: pointer;
}

.cs-subject-pill {
  background: linear-gradient(180deg, #2449bd, #173997);
  box-shadow: 0 4px 20px rgba(44, 90, 221, 0.27);
  color: #fff;
}

.cs-nav-link:hover,
.cs-nav-link:focus-visible { color: #fff; background: rgba(255, 255, 255, 0.05); }

.cs-session {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: auto;
}

.cs-button,
.cs-search-button {
  min-height: 44px;
  border: 1px solid var(--cs-border);
  border-radius: 10px;
  padding: 9px 15px;
  background: #0a1422;
  color: var(--cs-text);
  cursor: pointer;
}

.cs-button:hover,
.cs-search-button:hover { border-color: #3f5a7f; background: #0e1a2b; }
.cs-button:focus-visible,
.cs-search-button:focus-visible,
.cs-nav-link:focus-visible,
.cs-tab:focus-visible,
.cs-mode-tab:focus-visible {
  outline: 2px solid var(--cs-blue-bright);
  outline-offset: 2px;
}

.cs-button--primary {
  border-color: #5a7fff;
  background: linear-gradient(135deg, #355bdf, #5f86ff);
  box-shadow: 0 8px 25px rgba(52, 91, 222, 0.27);
  color: #fff;
  font-weight: 750;
}

.cs-button--primary:hover { background: linear-gradient(135deg, #4168ec, #6b91ff); }
.cs-button:disabled { cursor: not-allowed; opacity: 0.55; }

.cs-search-button {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 650;
}

.cs-search-button kbd {
  border: 1px solid #344257;
  border-radius: 5px;
  padding: 2px 6px;
  background: rgba(255, 255, 255, 0.05);
  color: #aab6c9;
  font-size: 11px;
}

.cs-main {
  height: calc(100vh - 70px);
  min-height: 0;
  padding: 17px 21px 23px;
}

.cs-loading,
.cs-error {
  max-width: 680px;
  margin: 15vh auto 0;
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  padding: 30px;
  background: var(--cs-panel);
  text-align: center;
}

.cs-shell {
  display: grid;
  height: 100%;
  min-height: 0;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 12px;
}

.cs-breadcrumb {
  display: grid;
  gap: 9px;
  min-width: 0;
  padding: 0 9px;
  font-size: 14px;
}

.cs-back {
  width: max-content;
  border: 0;
  padding: 0;
  background: transparent;
  color: #d5dfed;
  cursor: pointer;
}

.cs-meta {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--cs-muted);
}

.cs-meta strong { color: var(--cs-text); }
.cs-meta-separator { color: #52627a; }

.cs-mobile-tabs { display: none; }

.cs-split {
  --cs-question-width: 46%;
  display: grid;
  min-width: 0;
  min-height: 0;
  grid-template-columns: minmax(360px, var(--cs-question-width)) 12px minmax(430px, 1fr);
  gap: 0;
}

.cs-question-panel,
.cs-answer-panel {
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  background: linear-gradient(180deg, rgba(11, 25, 43, 0.78), rgba(7, 17, 30, 0.72));
  -webkit-backdrop-filter: blur(6px) saturate(108%);
  backdrop-filter: blur(6px) saturate(108%);
  box-shadow: var(--cs-shadow);
}

.cs-question-panel {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
}

.cs-viewer-toolbar,
.cs-editor-toolbar,
.cs-answer-status,
.cs-answer-tabs,
.cs-submission-footer {
  border-bottom: 1px solid var(--cs-border-soft);
}

.cs-viewer-toolbar {
  display: flex;
  min-height: 60px;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
}

.cs-toolbar-spacer { flex: 1; }
.cs-toolbar-mode { color: var(--cs-muted); font-size: 13px; }

.cs-tool-button {
  min-width: 42px;
  min-height: 40px;
  border: 1px solid #2b405e;
  border-radius: 8px;
  padding: 7px 12px;
  background: #0b1727;
  color: #e5edfa;
  cursor: pointer;
  font-weight: 650;
}

.cs-tool-button:hover { border-color: #49658d; background: #102039; }
.cs-source-status { padding: 7px 16px; color: #b8c5d8; font-size: 13px; }

.cs-question-viewport {
  min-height: 0;
  overflow: auto;
  padding: 11px 16px;
  background:
    linear-gradient(rgba(4, 11, 21, 0.55), rgba(4, 11, 21, 0.55)),
    radial-gradient(circle at 50% 0, rgba(62, 96, 154, 0.12), transparent 62%);
  scrollbar-color: #49607e transparent;
}

.cs-question-pages {
  display: grid;
  width: 100%;
  justify-items: center;
  gap: 14px;
  transform-origin: top center;
}

.cs-question-image {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 3px;
  background: #fff;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.32);
}

.cs-question-footer {
  display: flex;
  min-height: 76px;
  align-items: center;
  gap: 16px;
  padding: 11px 18px;
  border-top: 1px solid var(--cs-border-soft);
  color: var(--cs-muted);
  font-size: 12px;
  line-height: 1.55;
}

.cs-question-footer p { flex: 1; margin: 0; }

.cs-split-handle {
  position: relative;
  z-index: 3;
  width: 12px;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: col-resize;
  touch-action: none;
}

.cs-split-handle::before {
  position: absolute;
  inset: 0 5px;
  border-radius: 4px;
  background: rgba(70, 98, 137, 0.26);
  content: "";
}

.cs-split-handle span {
  position: absolute;
  top: calc(50% - 34px);
  left: 3px;
  width: 6px;
  height: 68px;
  border-radius: 5px;
  background: var(--cs-blue);
  box-shadow: 0 0 16px rgba(77, 120, 255, 0.45);
}

.cs-split-handle:focus-visible { outline: 2px solid var(--cs-blue); outline-offset: -2px; }

.cs-answer-panel {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto auto;
}

.cs-answer-status {
  display: flex;
  min-height: 41px;
  align-items: center;
  gap: 12px;
  padding: 6px 17px;
  font-size: 13px;
}

.cs-answer-status .revision-time-status {
  position: relative;
  flex: 1;
  margin: 0;
  padding-left: 20px;
  color: #b8c6d9;
}

.cs-answer-status .revision-time-status::before {
  position: absolute;
  top: 50%;
  left: 0;
  width: 10px;
  height: 10px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: var(--cs-green);
  box-shadow: 0 0 11px rgba(53, 208, 139, 0.42);
  content: "";
}

.cs-answer-status .revision-time-status[data-status="active"] { color: #57dc9d; }

.cs-answer-status .scoring-eligibility {
  flex: none;
  border: 1px solid rgba(42, 191, 128, 0.46);
  border-radius: 999px;
  padding: 5px 10px;
  color: #68e4aa;
  font-size: 12px;
}

.cs-answer-tabs {
  display: flex;
  min-height: 62px;
  align-items: end;
  gap: 4px;
  padding: 0 14px;
}

.cs-mode-tab {
  position: relative;
  min-height: 55px;
  border: 0;
  padding: 17px 17px 14px;
  background: transparent;
  color: #a9b7ca;
  cursor: pointer;
}

.cs-mode-tab[aria-selected="true"] { color: #fff; font-weight: 700; }
.cs-mode-tab[aria-selected="true"]::after {
  position: absolute;
  right: 8px;
  bottom: -1px;
  left: 8px;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--cs-blue);
  box-shadow: 0 0 12px rgba(77, 120, 255, 0.5);
  content: "";
}

.cs-answer-main {
  display: grid;
  min-height: 0;
  grid-template-rows: minmax(0, 1fr) minmax(120px, 0.55fr);
  gap: 0;
  padding: 10px 12px 0;
  overflow: hidden;
}

.cs-editor-card,
.cs-feedback-card {
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--cs-border-soft);
  background: rgba(5, 14, 27, 0.62);
}

.cs-editor-card { border-radius: 13px 13px 0 0; }
.cs-feedback-card {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  border-radius: 0 0 13px 13px;
}

.cs-editor-toolbar {
  display: flex;
  min-height: 50px;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding: 6px 12px;
}

.cs-language-select {
  min-height: 39px;
  min-width: 150px;
  border: 1px solid #2c405e;
  border-radius: 9px;
  padding: 7px 34px 7px 11px;
  background: #0b1727;
  color: var(--cs-text);
}

.cs-code-editor { height: calc(100% - 50px); min-height: 180px; overflow: hidden; }

.cs-text-editor {
  display: block;
  width: 100%;
  min-height: 220px;
  max-height: 50vh;
  resize: vertical;
  border: 0;
  padding: 18px;
  outline: 0;
  background: transparent;
  color: var(--cs-text);
  line-height: 1.65;
}

.cs-word-count { margin-right: auto; color: var(--cs-muted); font-size: 12px; }

.cs-feedback-header {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  padding: 9px 16px;
  color: #cbd7e8;
}

.cs-feedback-body {
  min-height: 68px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  padding: 0 16px 13px;
  color: var(--cs-muted);
  font-size: 14px;
}

.cs-feedback-body > p { margin: 6px 0; }
.cs-feedback-body .scored-answer-panel { border: 0; padding: 0; background: transparent; }
.cs-feedback-body .scored-answer-heading-row,
.cs-feedback-body .scored-answer-actions { display: none; }
.cs-feedback-body .scored-answer-result { margin: 0; }

.cs-rishai {
  margin: 11px 12px;
  overflow: hidden;
  border: 1px solid var(--cs-border-soft);
  border-radius: 13px;
  background: rgba(6, 15, 28, 0.67);
}

.cs-rishai-header {
  display: flex;
  min-height: 48px;
  align-items: center;
  gap: 10px;
  padding: 8px 13px;
}

.cs-rishai-mark {
  display: grid;
  width: 29px;
  height: 29px;
  place-items: center;
  border: 1px solid #2d4260;
  border-radius: 8px;
  color: #7fa2ff;
}

.cs-beta {
  border: 1px solid #36475d;
  border-radius: 999px;
  padding: 2px 7px;
  color: #a7b5c8;
  font-size: 11px;
}

.cs-rishai-toggle {
  margin-left: auto;
  border: 0;
  padding: 7px;
  background: transparent;
  color: #c2cede;
  cursor: pointer;
}

.cs-rishai-body { padding: 0 13px 12px; }
.cs-rishai-warning { margin: 0 0 8px; color: #d6c58e; font-size: 12px; }
.cs-rishai-actions { display: flex; flex-wrap: wrap; gap: 9px; }

.cs-rishai-action {
  min-height: 36px;
  border: 1px solid #283b56;
  border-radius: 999px;
  padding: 7px 12px;
  background: #091526;
  color: #ced8e8;
  cursor: pointer;
  font-size: 12px;
}

.cs-rishai-action:hover { border-color: #42628e; color: #fff; }
.cs-rishai-thread { max-height: 170px; margin: 9px 0; overflow: auto; }
.cs-rishai-message { margin: 7px 0; border-radius: 9px; padding: 9px 11px; white-space: pre-wrap; line-height: 1.5; }
.cs-rishai-message--user { margin-left: 12%; background: #142b54; }
.cs-rishai-message--assistant { margin-right: 7%; background: #0d1b2e; color: #dbe5f5; }

.cs-rishai-form {
  display: flex;
  gap: 8px;
  margin-top: 9px;
}

.cs-rishai-input {
  flex: 1;
  min-height: 40px;
  resize: none;
  border: 1px solid #2b405e;
  border-radius: 9px;
  padding: 9px 11px;
  background: #081423;
  color: #fff;
}

.cs-submission-footer {
  display: grid;
  min-height: 79px;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 18px;
  padding: 10px 12px;
  border-top: 1px solid var(--cs-border-soft);
  border-bottom: 0;
  background: rgba(9, 21, 36, 0.76);
}

.cs-submission-footer .cs-next { justify-self: end; }
.cs-save-state { min-width: 140px; text-align: center; color: var(--cs-muted); font-size: 12px; }
.cs-save-state strong { display: block; color: #62dda2; font-size: 13px; }
.cs-submit-actions { display: flex; gap: 10px; }

.cs-trace-wrap { height: calc(100% - 50px); overflow: auto; padding: 13px; }
.cs-trace-table { width: 100%; border-collapse: collapse; }
.cs-trace-table th, .cs-trace-table td { border: 1px solid #304762; padding: 0; }
.cs-trace-table th { padding: 9px; background: #0d1c30; color: #cbd7e8; text-align: left; }
.cs-trace-table input { width: 100%; min-height: 42px; border: 0; padding: 8px; outline: 0; background: transparent; color: #fff; }
.cs-trace-table input:focus { box-shadow: inset 0 0 0 2px var(--cs-blue); }

.cs-diagram-area { display: grid; height: calc(100% - 50px); place-items: center; gap: 10px; padding: 20px; text-align: center; }
.cs-diagram-preview { max-width: min(100%, 520px); max-height: 260px; border-radius: 8px; object-fit: contain; }
.cs-diagram-description { width: min(100%, 620px); min-height: 80px; border: 1px solid #2c405e; border-radius: 9px; padding: 10px; background: #081423; color: #fff; }

.cs-index-dialog {
  width: min(760px, calc(100vw - 32px));
  max-height: min(760px, calc(100vh - 44px));
  border: 1px solid #334d70;
  border-radius: 16px;
  padding: 0;
  background: rgba(9, 22, 37, 0.94);
  color: #fff;
  box-shadow: 0 25px 90px rgba(0, 0, 0, 0.55);
}

.cs-index-dialog::backdrop { background: rgba(1, 5, 11, 0.76); }
.cs-index-header { display: flex; align-items: center; padding: 18px; border-bottom: 1px solid var(--cs-border); }
.cs-index-header h2 { margin: 0; font-size: 19px; }
.cs-index-header button { margin-left: auto; }
.cs-index-filters {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(130px, 0.55fr) auto;
  align-items: end;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--cs-border-soft);
  background: rgba(5, 14, 27, 0.62);
}
.cs-index-filter { display: grid; gap: 6px; color: var(--cs-muted); font-size: 12px; font-weight: 650; }
.cs-index-select {
  width: 100%;
  min-height: 42px;
  border: 1px solid #304867;
  border-radius: 9px;
  padding: 8px 34px 8px 11px;
  background: rgba(8, 20, 35, 0.94);
  color: var(--cs-text);
}
.cs-index-select:focus-visible { outline: 2px solid var(--cs-blue-bright); outline-offset: 2px; }
.cs-index-count { min-width: 92px; padding-bottom: 11px; color: #b8c6d9; font-size: 12px; text-align: right; }
.cs-index-list { display: grid; gap: 8px; max-height: 56vh; overflow: auto; padding: 14px; }
.cs-index-item { position: relative; display: grid; gap: 4px; width: 100%; border: 1px solid #263c58; border-radius: 10px; padding: 12px 45px 12px 13px; background: rgba(12, 26, 44, 0.9); color: #fff; text-align: left; cursor: pointer; }
.cs-index-item[hidden] { display: none; }
.cs-index-item small { color: var(--cs-muted); }
.cs-index-empty { margin: 0; padding: 22px; color: var(--cs-muted); text-align: center; }
.question-complete-indicator { position: absolute; top: 50%; right: 15px; transform: translateY(-50%); color: var(--cs-green); font-size: 20px; }

.cs-mark-scheme-access {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 10px;
  border-top: 1px solid var(--cs-border-soft);
  padding-top: 10px;
  color: #c3cede;
}

.cs-mark-scheme-access[hidden] { display: none; }

.cs-mark-scheme-link {
  flex: none;
  min-height: 38px;
  padding: 7px 12px;
  text-decoration: none;
}

@media (max-width: 1100px) {
  .cs-topbar { gap: 12px; padding-inline: 18px; }
  .cs-primary-nav { gap: 2px; }
  .cs-subject-pill, .cs-nav-link { padding-inline: 10px; }
  .cs-search-button kbd { display: none; }
  .cs-main { padding-inline: 14px; }
}

@media (max-width: 949px) {
  body { overflow: auto; }
  .cs-main { height: auto; min-height: calc(100vh - 70px); padding-bottom: 90px; }
  .cs-shell { min-height: calc(100vh - 110px); grid-template-rows: auto auto minmax(600px, 1fr); }
  .cs-mobile-tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
  .cs-tab { min-height: 42px; border: 1px solid var(--cs-border); border-radius: 8px; background: #091625; color: #adbad0; }
  .cs-tab[aria-selected="true"] { border-color: #4e72dc; background: #18377f; color: #fff; }
  .cs-split { display: block; min-height: 0; }
  .cs-split-handle { display: none; }
  .cs-question-panel, .cs-answer-panel { min-height: 650px; }
  .cs-split[data-mobile-pane="question"] .cs-answer-panel,
  .cs-split[data-mobile-pane="answer"] .cs-question-panel { display: none; }
  .cs-split[data-mobile-pane="rishai"] .cs-question-panel,
  .cs-split[data-mobile-pane="rishai"] .cs-answer-main,
  .cs-split[data-mobile-pane="rishai"] .cs-answer-tabs { display: none; }
  .cs-split[data-mobile-pane="rishai"] .cs-answer-panel { min-height: 500px; grid-template-rows: auto minmax(0, 1fr) auto; }
  .cs-split[data-mobile-pane="rishai"] .cs-rishai { display: block; min-height: 340px; }
}

@media (max-width: 700px) {
  .cs-topbar { min-height: 62px; padding: 8px 12px; }
  .cs-brand { font-size: 14px; }
  .cs-primary-nav .cs-nav-link { display: none; }
  .cs-subject-pill { min-height: 38px; padding: 8px 10px; font-size: 13px; }
  .cs-session { gap: 7px; }
  #sessionName { display: none; }
  .cs-search-button span:nth-child(2) { display: none; }
  .cs-search-button { min-width: 42px; padding-inline: 10px; }
  .cs-main { min-height: calc(100vh - 62px); padding: 12px 8px 84px; }
  .cs-meta { font-size: 12px; }
  .cs-meta span:nth-last-child(-n+4) { display: none; }
  .cs-viewer-toolbar { padding-inline: 8px; gap: 5px; }
  .cs-tool-button { min-width: 38px; padding-inline: 9px; }
  .cs-toolbar-mode { display: none; }
  .cs-question-footer { align-items: stretch; flex-direction: column; }
  .cs-answer-tabs { overflow-x: auto; }
  .cs-mode-tab { padding-inline: 12px; white-space: nowrap; }
  .cs-answer-main { min-height: 450px; padding-inline: 7px; }
  .cs-submission-footer {
    position: sticky;
    z-index: 12;
    bottom: 0;
    grid-template-columns: auto 1fr auto;
    gap: 7px;
    padding: 8px;
  }
  .cs-save-state { min-width: 0; }
  .cs-save-state span { display: none; }
  .cs-submit-actions { gap: 6px; }
  .cs-submission-footer .cs-button { min-height: 42px; padding-inline: 10px; font-size: 12px; }
  .cs-index-filters { grid-template-columns: 1fr 1fr; padding: 12px; }
  .cs-index-count { grid-column: 1 / -1; min-width: 0; padding: 0; text-align: left; }
  .cs-index-list { max-height: 52vh; padding: 10px; }
  .cs-mark-scheme-access { align-items: stretch; flex-direction: column; }
  .cs-mark-scheme-link { align-self: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}
/* Long-response questions retain the existing editor styling while growing with their content. */

body.cs-topics-page {
  overflow: auto;
}

.cs-main.cs-main--topics {
  display: block;
  height: auto;
  min-height: calc(100vh - 70px);
  overflow: visible;
  padding: 28px clamp(18px, 4vw, 64px) 64px;
}

.cs-primary-nav .cs-nav-link[aria-current="page"] {
  border-color: rgba(91, 140, 255, 0.38);
  background: rgba(68, 113, 221, 0.2);
  color: #fff;
}

.cs-topic-browser {
  width: min(1260px, 100%);
  margin: 0 auto;
}

.cs-topic-hero,
.cs-topic-filters,
.cs-topic-results {
  border: 1px solid var(--cs-border);
  background: linear-gradient(180deg, rgba(12, 27, 46, 0.76), rgba(7, 17, 30, 0.7));
  -webkit-backdrop-filter: blur(10px) saturate(112%);
  backdrop-filter: blur(10px) saturate(112%);
  box-shadow: var(--cs-shadow);
}

.cs-topic-hero {
  padding: clamp(24px, 4vw, 42px);
  border-radius: 16px 16px 0 0;
}

.cs-topic-kicker {
  color: var(--cs-blue-bright);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.cs-topic-hero h1 {
  margin: 8px 0 10px;
  font-size: clamp(30px, 5vw, 52px);
  letter-spacing: -0.04em;
}

.cs-topic-hero p {
  max-width: 780px;
  margin: 0;
  color: var(--cs-muted);
  font-size: 16px;
  line-height: 1.65;
}

.cs-topic-filters {
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) minmax(190px, 1fr) minmax(130px, 0.6fr);
  gap: 14px;
  padding: 18px clamp(18px, 4vw, 30px);
  border-top: 0;
  border-bottom-color: var(--cs-border-soft);
}

.cs-topic-filter {
  display: grid;
  gap: 7px;
  color: var(--cs-muted);
  font-size: 12px;
  font-weight: 700;
}

.cs-topic-select {
  width: 100%;
  min-height: 44px;
  border: 1px solid #304867;
  border-radius: 10px;
  padding: 8px 34px 8px 12px;
  background: rgba(8, 20, 35, 0.96);
  color: var(--cs-text);
}

.cs-topic-select:focus-visible {
  outline: 2px solid var(--cs-blue-bright);
  outline-offset: 2px;
}

.cs-topic-results {
  padding: clamp(18px, 3vw, 30px);
  border-top: 0;
  border-radius: 0 0 16px 16px;
}

.cs-topic-results-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.cs-topic-results-header h2 {
  margin: 0;
  font-size: clamp(20px, 3vw, 28px);
  letter-spacing: -0.025em;
}

.cs-topic-count {
  flex: none;
  color: var(--cs-muted);
  font-size: 13px;
}

.cs-topic-question-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.cs-topic-question-card {
  position: relative;
  display: grid;
  min-width: 0;
  gap: 8px;
  padding: 17px 18px;
  overflow: hidden;
  border: 1px solid rgba(78, 111, 151, 0.42);
  border-radius: 12px;
  background: rgba(8, 20, 36, 0.72);
  color: var(--cs-text);
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  transition: border-color 150ms ease, background-color 150ms ease, transform 150ms ease;
}

.cs-topic-question-card:hover {
  border-color: rgba(92, 141, 255, 0.68);
  background: rgba(12, 29, 50, 0.9);
  transform: translateY(-1px);
}

.cs-topic-question-card:focus-visible {
  outline: 3px solid var(--cs-blue-bright);
  outline-offset: 3px;
}

.cs-topic-question-card strong {
  font-size: 16px;
  line-height: 1.35;
}

.cs-topic-question-card p {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  color: var(--cs-muted);
  line-height: 1.5;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.cs-topic-question-source,
.cs-topic-question-type {
  color: #91add3;
  font-size: 12px;
  font-weight: 650;
}

.cs-topic-question-type {
  justify-self: start;
  padding: 4px 8px;
  border: 1px solid rgba(97, 137, 188, 0.3);
  border-radius: 999px;
  background: rgba(50, 80, 121, 0.2);
}

.cs-topic-empty {
  margin: 0;
  padding: 42px 18px;
  color: var(--cs-muted);
  text-align: center;
}

@media (max-width: 820px) {
  .cs-main.cs-main--topics {
    padding: 16px 12px 44px;
  }

  .cs-topic-filters,
  .cs-topic-question-list {
    grid-template-columns: 1fr;
  }

  .cs-topic-results-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }
}
.answer-editor textarea,
textarea[data-answer-mode="answer"],
textarea[data-editor-variant="extended_markdown"] {
  field-sizing: content;
  min-height: 10rem;
  max-height: 60vh;
  overflow-y: auto;
  resize: vertical;
}