@font-face {
  font-display: swap;
  font-family: 'Inter Variable';
  font-style: normal;
  font-weight: 100 900;
  src: url('../vendor/@fontsource-variable/inter/files/inter-latin-wght-normal.woff2') format('woff2-variations');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329,
    U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-display: swap;
  font-family: 'Inter Variable';
  font-style: normal;
  font-weight: 100 900;
  src: url('../vendor/@fontsource-variable/inter/files/inter-latin-ext-wght-normal.woff2') format('woff2-variations');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329,
    U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-display: swap;
  font-family: 'JetBrains Mono Variable';
  font-style: normal;
  font-weight: 100 800;
  src: url('../vendor/@fontsource-variable/jetbrains-mono/files/jetbrains-mono-latin-wght-normal.woff2')
    format('woff2-variations');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329,
    U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-display: swap;
  font-family: 'JetBrains Mono Variable';
  font-style: normal;
  font-weight: 100 800;
  src: url('../vendor/@fontsource-variable/jetbrains-mono/files/jetbrains-mono-latin-ext-wght-normal.woff2')
    format('woff2-variations');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329,
    U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  color-scheme: dark;
  --background: #0a0b10;
  --surface: #11131a;
  --surface-raised: #171a23;
  --surface-hover: #1e2230;
  --surface-sunken: #0c0e14;
  --border: #222634;
  --border-strong: #30364a;
  --text: #e7e9f0;
  --text-soft: #c3c7d4;
  --muted: #8d94a8;
  --subtle: #5f6679;
  --accent: #635bff;
  --accent-hover: #7570ff;
  --accent-soft: rgb(99 91 255 / 16%);
  --accent-text: #a9a4ff;
  --highlight: #ffd166;
  --pass: #34d399;
  --pass-soft: rgb(52 211 153 / 12%);
  --pass-line: rgb(52 211 153 / 10%);
  --fail: #f87171;
  --fail-soft: rgb(248 113 113 / 12%);
  --fail-line: rgb(248 113 113 / 10%);
  --warn: #fbbf24;
  --warn-soft: rgb(251 191 36 / 12%);
  --font-sans: 'Inter Variable', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono Variable', 'DejaVu Sans Mono', 'Liberation Mono', monospace;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow: 0 1px 0 rgb(255 255 255 / 3%) inset, 0 12px 32px rgb(0 0 0 / 35%);
  --problem-width: 40%;
}

* {
  box-sizing: border-box;
  scrollbar-color: rgb(255 255 255 / 12%) transparent;
  scrollbar-width: thin;
}

html,
body {
  block-size: 100%;
  margin: 0;
}

body {
  background: var(--background);
  color: var(--text);
  font-family: var(--font-sans);
  font-feature-settings: 'cv11', 'ss01';
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: rgb(99 91 255 / 35%);
}

button {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

kbd {
  font-family: var(--font-mono);
}

/* Shared pieces */

.pill {
  align-items: center;
  border-radius: 999px;
  display: inline-flex;
  flex: none;
  font-size: 12px;
  font-weight: 600;
  gap: 6px;
  line-height: 20px;
  padding: 0 10px;
}

.pill:empty {
  display: none;
}

.pill-easy {
  background: var(--pass-soft);
  color: var(--pass);
}

.pill-medium {
  background: var(--warn-soft);
  color: var(--warn);
}

.pill-hard {
  background: var(--fail-soft);
  color: var(--fail);
}

.icon-button {
  align-items: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  block-size: 32px;
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  flex: none;
  inline-size: 32px;
  justify-content: center;
  transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
}

.icon-button:hover {
  background: var(--surface-hover);
  border-color: var(--border);
  color: var(--text);
}

.button {
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
  padding: 8px 16px;
  transition: background-color 120ms ease, border-color 120ms ease;
}

.button:hover {
  background: var(--surface-hover);
}

.button-danger {
  background: #dc4a4a;
  border-color: #e25d5d;
  color: #ffffff;
}

.button-danger:hover {
  background: #e45757;
}

.spinner {
  animation: spin 700ms linear infinite;
  block-size: 12px;
  border: 2px solid currentColor;
  border-inline-end-color: transparent;
  border-radius: 50%;
  display: inline-block;
  flex: none;
  inline-size: 12px;
}

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

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgb(52 211 153 / 45%);
  }

  70% {
    box-shadow: 0 0 0 6px rgb(52 211 153 / 0%);
  }

  100% {
    box-shadow: 0 0 0 0 rgb(52 211 153 / 0%);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

/* Menu */

.menu {
  background:
    radial-gradient(900px 420px at 15% -10%, rgb(99 91 255 / 18%), transparent 70%),
    radial-gradient(700px 360px at 95% 0%, rgb(255 209 102 / 6%), transparent 70%),
    var(--background);
  block-size: 100vh;
  block-size: 100dvh;
  overflow: auto;
}

.menu[hidden],
.screen[hidden] {
  display: none;
}

.menu-inner {
  margin-inline: auto;
  max-inline-size: 1180px;
  padding: 56px 48px;
}

.menu-header {
  align-items: center;
  display: flex;
  gap: 16px;
  margin-block-end: 44px;
}

.brand-logo {
  border-radius: 12px;
  box-shadow: 0 8px 24px rgb(99 91 255 / 35%);
  flex: none;
}

.menu-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0;
}

.menu-subtitle {
  color: var(--muted);
  font-size: 15px;
  margin: 4px 0 0;
}

.section-label {
  color: var(--subtle);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin: 0;
  text-transform: uppercase;
}

.update-banner {
  align-items: center;
  background: var(--accent-soft);
  border: 1px solid rgb(99 91 255 / 35%);
  border-radius: var(--radius);
  display: flex;
  gap: 12px;
  margin-block-end: 24px;
  padding: 8px 8px 8px 14px;
}

.update-banner[hidden],
.update-install[hidden] {
  display: none;
}

.update-banner svg {
  color: var(--accent-text);
  flex: none;
}

.update-text {
  flex: 1;
  font-size: 13px;
  font-weight: 500;
  min-block-size: 32px;
  padding-block: 6px;
}

.update-install {
  padding: 7px 14px;
}

.menu-version {
  color: var(--subtle);
  font-size: 12px;
  margin: 32px 0 0;
}

.menu-version:empty {
  display: none;
}

.menu-toolbar {
  align-items: center;
  display: flex;
  gap: 12px;
  margin-block-end: 14px;
  min-block-size: 32px;
}

.menu-status {
  color: var(--muted);
  flex: 1;
  font-size: 13px;
  text-align: end;
}

.menu-refresh {
  align-items: center;
  display: inline-flex;
  font-size: 13px;
  gap: 8px;
  padding: 6px 12px;
}

.menu-refresh[hidden] {
  display: none;
}

.menu-refresh:disabled {
  cursor: progress;
  opacity: 0.6;
}

.menu-refresh:disabled svg {
  animation: spin 900ms linear infinite;
}

.problem-list {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
}

.problem-list > li {
  animation: rise 320ms ease both;
  display: flex;
}

.problem-list > li:nth-child(2) {
  animation-delay: 40ms;
}

.problem-list > li:nth-child(3) {
  animation-delay: 80ms;
}

.problem-list > li:nth-child(n + 4) {
  animation-delay: 120ms;
}

.problem-card {
  background: linear-gradient(180deg, var(--surface-raised), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 0 rgb(255 255 255 / 3%) inset;
  color: var(--text);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  inline-size: 100%;
  padding: 20px 22px;
  position: relative;
  text-align: start;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.problem-card:hover,
.problem-card:focus-visible {
  border-color: rgb(99 91 255 / 55%);
  box-shadow: 0 1px 0 rgb(255 255 255 / 4%) inset, 0 16px 40px rgb(0 0 0 / 40%), 0 0 0 4px rgb(99 91 255 / 10%);
  outline: none;
  transform: translateY(-2px);
}

.problem-card-top {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-block-end: 14px;
}

.problem-index {
  color: var(--subtle);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}

.problem-card-title {
  font-size: 18px;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
}

.problem-card-summary {
  color: var(--muted);
  flex: 1;
  margin: 0 0 20px;
}

.problem-card-meta {
  align-items: center;
  border-block-start: 1px solid var(--border);
  color: var(--muted);
  display: flex;
  font-size: 12px;
  gap: 16px;
  padding-block-start: 14px;
}

.meta-item {
  align-items: center;
  display: inline-flex;
  gap: 6px;
}

.meta-item svg {
  color: var(--subtle);
}

.meta-item-active {
  color: var(--highlight);
}

.meta-item-active svg {
  color: var(--highlight);
}

.problem-card-arrow {
  color: var(--subtle);
  margin-inline-start: auto;
  transition: transform 160ms ease, color 160ms ease;
}

.problem-card:hover .problem-card-arrow,
.problem-card:focus-visible .problem-card-arrow {
  color: var(--accent-text);
  transform: translateX(3px);
}

/* Problem screen */

.screen {
  block-size: 100vh;
  block-size: 100dvh;
  display: flex;
  flex-direction: column;
}

.topbar {
  align-items: center;
  display: flex;
  flex: none;
  gap: 10px;
  padding: 8px 12px;
  user-select: none;
}

.topbar-divider {
  background: var(--border);
  block-size: 18px;
  inline-size: 1px;
}

.screen-title {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -0.01em;
  min-inline-size: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pane-tabs.segmented {
  display: none;
}

.timer {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-soft);
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  gap: 8px;
  margin-inline-start: auto;
  padding: 4px 12px;
}

.timer-dot {
  animation: pulse 2s ease-out infinite;
  background: var(--pass);
  block-size: 7px;
  border-radius: 50%;
  inline-size: 7px;
}

.layout {
  display: grid;
  flex: 1;
  grid-template-columns: var(--problem-width) 8px minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  min-block-size: 0;
  padding: 0 8px 8px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  min-block-size: 0;
  min-inline-size: 0;
  overflow: hidden;
}

.panel-header {
  align-items: center;
  background: var(--surface-raised);
  border-block-end: 1px solid var(--border);
  display: flex;
  flex: none;
  gap: 12px;
  min-block-size: 42px;
  padding: 5px 8px 5px 14px;
}

.panel-label {
  align-items: center;
  color: var(--text-soft);
  display: inline-flex;
  font-size: 13px;
  font-weight: 600;
  gap: 8px;
}

.panel-label svg {
  color: var(--accent-text);
}

.panel-hint {
  color: var(--subtle);
  font-family: var(--font-mono);
  font-size: 11px;
  margin-inline-start: auto;
  overflow: hidden;
  padding-inline-end: 6px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-badge {
  background: rgb(85 144 255 / 16%);
  border-radius: 4px;
  color: #7fb0ff;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  line-height: 16px;
  padding: 0 4px;
}

.splitter {
  cursor: col-resize;
  position: relative;
  touch-action: none;
}

.splitter::after {
  background: transparent;
  border-radius: 2px;
  content: '';
  inline-size: 2px;
  inset-block: 30%;
  inset-inline-start: 3px;
  position: absolute;
  transition: background-color 120ms ease, inset 160ms ease;
}

.splitter:hover::after,
.splitter.is-dragging::after {
  background: var(--accent);
  inset-block: 0;
}

body.is-resizing {
  cursor: col-resize;
  user-select: none;
}

.workspace {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-block-size: 0;
  min-inline-size: 0;
}

.editor-panel {
  flex: 1;
}

.editor {
  flex: 1;
  min-block-size: 0;
  overflow: hidden;
}

.problem {
  flex: 1;
  overflow: auto;
  padding: 8px 26px 32px;
}

/* Output panel */

.bottom {
  flex: none;
}

.bottom > .panel-header {
  border-block-end-color: transparent;
}

.bottom.is-open {
  block-size: 42%;
}

.bottom.is-open > .panel-header {
  border-block-end-color: var(--border);
}

.segmented {
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: inline-flex;
  gap: 2px;
  padding: 2px;
}

.segment {
  background: transparent;
  border: 0;
  border-radius: 6px;
  color: var(--muted);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  padding: 3px 14px;
  transition: background-color 120ms ease, color 120ms ease;
}

.segment:hover {
  color: var(--text);
}

.segment[aria-selected='true'] {
  background: var(--surface-hover);
  box-shadow: 0 1px 2px rgb(0 0 0 / 40%), 0 0 0 1px var(--border-strong) inset;
  color: var(--text);
  font-weight: 600;
}

.status {
  align-items: center;
  color: var(--muted);
  display: inline-flex;
  flex: 1;
  font-size: 13px;
  font-weight: 500;
  gap: 8px;
  justify-content: flex-end;
  min-inline-size: 0;
  white-space: nowrap;
}

.status::before {
  background: currentColor;
  block-size: 7px;
  border-radius: 50%;
  content: '';
  flex: none;
  inline-size: 7px;
}

.status:empty::before {
  display: none;
}

.status-pass {
  color: var(--pass);
}

.status-fail {
  color: var(--fail);
}

.status-running {
  color: var(--accent-text);
}

.status-running::before {
  animation: spin 700ms linear infinite;
  background: transparent;
  block-size: 10px;
  border: 2px solid currentColor;
  border-inline-end-color: transparent;
  inline-size: 10px;
}

.run {
  align-items: center;
  background: linear-gradient(180deg, #6f68ff, var(--accent));
  border: 0;
  border-radius: 8px;
  box-shadow: 0 1px 0 rgb(255 255 255 / 18%) inset, 0 6px 18px rgb(99 91 255 / 30%);
  color: #ffffff;
  cursor: pointer;
  display: inline-flex;
  flex: none;
  font-size: 13px;
  font-weight: 600;
  gap: 8px;
  padding: 7px 8px 7px 14px;
  transition: filter 120ms ease, box-shadow 120ms ease;
}

.run:hover {
  box-shadow: 0 1px 0 rgb(255 255 255 / 18%) inset, 0 8px 22px rgb(99 91 255 / 45%);
  filter: brightness(1.08);
}

.run:disabled {
  cursor: progress;
  filter: saturate(0.6);
  opacity: 0.75;
}

.run-spinner,
.run:disabled .run-icon {
  display: none;
}

.run:disabled .run-spinner {
  display: inline-block;
}

.run-shortcut {
  align-items: center;
  background: rgb(255 255 255 / 16%);
  border-radius: 5px;
  display: inline-flex;
  font-size: 11px;
  font-weight: 600;
  gap: 3px;
  line-height: 18px;
  padding: 0 6px;
}

.results,
.custom {
  animation: rise 200ms ease both;
  display: grid;
  flex: 1;
  grid-template-columns: 240px minmax(0, 1fr);
  min-block-size: 0;
}

.results[hidden],
.custom[hidden] {
  display: none;
}

.results.has-compile-error {
  grid-template-columns: minmax(0, 1fr);
}

.results.has-compile-error .case-sidebar {
  display: none;
}

.case-sidebar {
  border-inline-end: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-block-size: 0;
}

.case-summary {
  border-block-end: 1px solid var(--border);
  flex: none;
  padding: 12px 14px;
}

.case-summary-text {
  align-items: baseline;
  display: flex;
  gap: 6px;
  margin-block-end: 8px;
}

.case-summary-count {
  font-size: 18px;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.case-summary-label {
  color: var(--muted);
  font-size: 12px;
}

.case-summary-bar {
  display: flex;
  gap: 2px;
}

.case-summary-segment {
  background: var(--fail);
  block-size: 4px;
  border-radius: 2px;
  flex: 1;
}

.case-summary-segment-pass {
  background: var(--pass);
}

.case-summary-segment-warn {
  background: var(--warn);
}

.case-list {
  flex: 1;
  list-style: none;
  margin: 0;
  overflow: auto;
  padding: 6px;
}

.case-button {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: 7px;
  color: var(--text-soft);
  cursor: pointer;
  display: flex;
  gap: 10px;
  inline-size: 100%;
  padding: 6px 10px;
  text-align: start;
  transition: background-color 100ms ease;
}

.case-button:hover {
  background: var(--surface-raised);
}

.case-button[aria-current='true'] {
  background: var(--surface-hover);
  box-shadow: 0 0 0 1px var(--border-strong) inset;
  color: var(--text);
}

.case-name {
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.case-tag {
  align-items: center;
  color: var(--subtle);
  display: inline-flex;
  flex: none;
  font-size: 11px;
  gap: 4px;
  margin-inline-start: auto;
}

.status-icon {
  align-items: center;
  block-size: 18px;
  border-radius: 50%;
  display: inline-flex;
  flex: none;
  inline-size: 18px;
  justify-content: center;
}

.status-icon-pass {
  background: var(--pass-soft);
  color: var(--pass);
}

.status-icon-fail {
  background: var(--fail-soft);
  color: var(--fail);
}

.status-icon-warn {
  background: var(--warn-soft);
  color: var(--warn);
}

.badge {
  align-items: center;
  border-radius: 999px;
  display: inline-flex;
  flex: none;
  font-size: 11px;
  font-weight: 700;
  gap: 4px;
  letter-spacing: 0.04em;
  line-height: 20px;
  padding: 0 8px 0 4px;
}

.badge .status-icon {
  background: transparent;
  block-size: 14px;
  inline-size: 14px;
}

.badge-pass {
  background: var(--pass-soft);
  color: var(--pass);
}

.badge-fail {
  background: var(--fail-soft);
  color: var(--fail);
}

.badge-warn {
  background: var(--warn-soft);
  color: var(--warn);
}

.case-detail {
  overflow: auto;
  padding: 14px 18px 18px;
}

.detail-title {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  font-size: 15px;
  font-weight: 650;
  gap: 10px;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.detail-label {
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
}

.detail-note {
  color: var(--muted);
  margin: 0 0 8px;
}

.detail-heading {
  color: var(--subtle);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin: 14px 0 6px;
  text-transform: uppercase;
}

.detail-title + .detail-heading,
.detail-title + .detail-note + .detail-heading {
  margin-block-start: 0;
}

.input-grid {
  display: grid;
  gap: 0 12px;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

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

.hidden-note {
  align-items: center;
  background: var(--surface-sunken);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 28px 16px;
  text-align: center;
}

.hidden-note svg {
  color: var(--subtle);
}

.compile-error {
  background: var(--fail-soft);
  border: 1px solid rgb(248 113 113 / 25%);
  border-radius: var(--radius);
  padding: 12px;
}

.compile-error .detail-title {
  color: var(--fail);
}

pre.output {
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: 8px;
  counter-reset: line;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 20px;
  margin: 0;
  min-block-size: 38px;
  overflow: auto;
  padding: 8px 0;
}

.line {
  border-inline-start: 2px solid transparent;
  display: block;
  line-height: 20px;
  min-block-size: 20px;
  padding: 0 12px;
  white-space: pre;
}

.compare .line,
.custom-output .line {
  padding-inline-start: 8px;
}

.compare .line::before,
.custom-output .line::before {
  color: var(--subtle);
  content: counter(line);
  counter-increment: line;
  display: inline-block;
  font-size: 11px;
  inline-size: 2.4em;
  margin-inline-end: 10px;
  opacity: 0.8;
  text-align: end;
  user-select: none;
}

.line-differs-expected {
  background: var(--pass-line);
  border-inline-start-color: var(--pass);
}

.line-differs-actual {
  background: var(--fail-line);
  border-inline-start-color: var(--fail);
}

.custom {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.custom-inputs {
  border-inline-end: 1px solid var(--border);
  overflow: auto;
  padding: 2px 18px 14px;
}

.custom-output {
  overflow: auto;
  padding: 14px 18px;
}

.custom-output:empty::before {
  color: var(--subtle);
  content: 'Run your code on this input to see its output here.';
  display: block;
  padding-block-start: 2px;
}

.custom-label {
  display: block;
}

.custom-input {
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  inline-size: 100%;
  letter-spacing: normal;
  line-height: 20px;
  margin-block-start: 6px;
  padding: 6px 10px;
  resize: vertical;
  text-transform: none;
  transition: border-color 120ms ease, box-shadow 120ms ease;
  white-space: pre;
}

.custom-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  outline: none;
}

/* Problem statement */

.markdown {
  color: var(--text-soft);
  line-height: 1.65;
}

.markdown strong {
  color: var(--text);
}

.markdown h1 {
  color: var(--text);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 18px 0 14px;
}

.markdown h2 {
  color: var(--text);
  font-size: 16px;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 28px 0 10px;
}

.markdown h3 {
  color: var(--text);
  font-size: 14px;
  font-weight: 650;
  margin: 20px 0 8px;
}

.markdown p {
  margin: 0 0 12px;
}

.markdown ul,
.markdown ol {
  margin: 0 0 12px;
  padding-inline-start: 22px;
}

.markdown li {
  margin-block: 4px;
}

.markdown li::marker {
  color: var(--accent-text);
}

.markdown code {
  background: rgb(255 255 255 / 6%);
  border: 1px solid rgb(255 255 255 / 6%);
  border-radius: 5px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding: 1px 5px;
}

.markdown pre {
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: 8px;
  line-height: 20px;
  margin: 0 0 14px;
  overflow: auto;
  padding: 12px 14px;
}

.markdown pre code {
  background: none;
  border: 0;
  color: var(--text-soft);
  font-size: 12.5px;
  padding: 0;
}

.markdown table {
  border: 1px solid var(--border);
  border-collapse: separate;
  border-radius: 8px;
  border-spacing: 0;
  font-size: 13px;
  margin: 0 0 14px;
  overflow: hidden;
}

.markdown th,
.markdown td {
  padding: 7px 12px;
  text-align: start;
  vertical-align: top;
}

.markdown th {
  background: var(--surface-raised);
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.markdown td {
  border-block-start: 1px solid var(--border);
}

.markdown td + td,
.markdown th + th {
  border-inline-start: 1px solid var(--border);
}

.markdown details {
  background: linear-gradient(180deg, var(--surface-raised), var(--surface) 120px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 0 0 12px;
  padding: 0 16px 4px;
}

.markdown details:not([open]) {
  padding-block-end: 0;
}

.markdown summary {
  align-items: center;
  cursor: pointer;
  display: flex;
  gap: 10px;
  list-style: none;
  margin-inline: -16px;
  padding: 12px 16px;
  user-select: none;
}

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

.markdown summary::after {
  border-block-end: 2px solid var(--muted);
  border-inline-end: 2px solid var(--muted);
  block-size: 7px;
  content: '';
  flex: none;
  inline-size: 7px;
  margin-inline: auto 4px;
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 160ms ease;
}

.markdown details:not([open]) summary::after {
  transform: rotate(-45deg);
}

.markdown summary:hover h2 {
  color: #ffffff;
}

.markdown summary h2 {
  font-size: 15px;
  margin: 0;
}

.part-badge {
  background: var(--accent-soft);
  border-radius: 6px;
  color: var(--accent-text);
  flex: none;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 22px;
  padding: 0 8px;
  text-transform: uppercase;
}

/* Reset dialog */

.dialog {
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgb(0 0 0 / 55%);
  color: var(--text);
  inline-size: min(400px, calc(100vw - 32px));
  padding: 24px;
}

.dialog[open] {
  animation: rise 160ms ease both;
}

.dialog::backdrop {
  backdrop-filter: blur(4px);
  background: rgb(5 6 10 / 60%);
}

.dialog form {
  margin: 0;
}

.dialog-icon {
  align-items: center;
  background: var(--fail-soft);
  block-size: 40px;
  border-radius: 10px;
  color: var(--fail);
  display: flex;
  inline-size: 40px;
  justify-content: center;
  margin-block-end: 16px;
}

.dialog-title {
  font-size: 17px;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
}

.dialog-text {
  color: var(--muted);
  margin: 0 0 22px;
}

.dialog-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* Phones, upright or sideways: the problem, the code and the output become tabs instead of side-by-side panels.
   Keep the query in sync with PHONE_QUERY in renderer.js. */

@media (max-width: 760px), (max-height: 500px) and (pointer: coarse) {
  .menu-inner {
    padding: 28px 16px 40px;
  }

  .menu-header {
    gap: 12px;
    margin-block-end: 28px;
  }

  .brand-logo {
    block-size: 38px;
    inline-size: 38px;
  }

  .menu-title {
    font-size: 22px;
  }

  .menu-subtitle {
    font-size: 13px;
  }

  .menu-toolbar {
    flex-wrap: wrap;
  }

  .menu-refresh {
    margin-inline-start: auto;
  }

  .menu-status {
    flex-basis: 100%;
    order: 3;
    text-align: start;
  }

  .menu-status:empty {
    display: none;
  }

  .problem-list {
    gap: 12px;
  }

  .problem-card:hover {
    transform: none;
  }

  .topbar {
    gap: 8px;
    padding: 6px 8px;
  }

  .topbar-divider {
    display: none;
  }

  .timer {
    font-size: 12px;
    padding: 3px 10px;
  }

  .pane-tabs.segmented {
    display: flex;
    flex: none;
    margin: 0 8px 8px;
  }

  .pane-tab {
    flex: 1;
    padding-block: 6px;
  }

  .layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .splitter {
    display: none;
  }

  .layout[data-pane='problem'] .workspace,
  .layout:not([data-pane='problem']) .problem-panel,
  .layout[data-pane='output'] .editor-panel {
    display: none;
  }

  .problem {
    padding: 4px 16px 24px;
  }

  .markdown h1 {
    font-size: 21px;
  }

  /* On the code tab the output panel shrinks to its bar, which keeps the Run button in reach. */
  .layout[data-pane='code'] .bottom {
    block-size: auto;
  }

  .layout[data-pane='code'] .bottom .results,
  .layout[data-pane='code'] .bottom .custom {
    display: none;
  }

  .layout[data-pane='output'] .bottom {
    block-size: auto;
    flex: 1;
  }

  .layout[data-pane='output'] .bottom:not(.is-open)::after {
    color: var(--subtle);
    content: 'Run your code to see the test results here.';
    padding: 16px;
  }

  .bottom > .panel-header {
    flex-wrap: wrap;
    padding-inline-start: 8px;
  }

  .run {
    margin-inline-start: auto;
  }

  .run-shortcut {
    display: none;
  }

  .status {
    flex-basis: 100%;
    justify-content: flex-start;
    order: 3;
    padding-inline-start: 4px;
  }

  .status:empty {
    display: none;
  }

  .results,
  .custom {
    align-content: start;
    grid-template-columns: minmax(0, 1fr);
    overflow: auto;
  }

  .case-sidebar {
    background: var(--surface);
    border-block-end: 1px solid var(--border);
    border-inline-end: 0;
    inset-block-start: 0;
    position: sticky;
    z-index: 1;
  }

  .case-summary {
    border-block-end: 0;
    padding-block-end: 4px;
  }

  .case-list {
    display: flex;
    flex: none;
    gap: 4px;
    overflow-x: auto;
  }

  .case-list > li {
    flex: none;
  }

  .case-button {
    gap: 6px;
    inline-size: auto;
    padding: 5px 10px 5px 6px;
  }

  .case-tag {
    font-size: 0;
    margin-inline-start: 0;
  }

  .case-detail,
  .custom-output {
    overflow: visible;
  }

  .compare {
    grid-template-columns: minmax(0, 1fr);
  }

  .custom-inputs {
    border-block-end: 1px solid var(--border);
    border-inline-end: 0;
    overflow: visible;
  }

  /* iOS zooms into inputs with text under 16px when they get focus. */
  .custom-input,
  .monaco-editor textarea {
    font-size: 16px !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}