/* ==========================================================================
   Sub Remuxer — Material 3 Expressive
   Tokens first, then layout, then components. No build step, no web fonts.
   ========================================================================== */

/* ------------------------------------------------------------------ tokens */

:root {
  color-scheme: light dark;

  /* Baseline M3 tonal palette (violet). Expressiveness comes from the shape,
     motion and layout tokens below, not from an exotic hue. */
  --primary: #6750a4;
  --on-primary: #ffffff;
  --primary-container: #eaddff;
  --on-primary-container: #21005d;
  --secondary: #625b71;
  --on-secondary: #ffffff;
  --secondary-container: #e8def8;
  --on-secondary-container: #1d192b;
  --tertiary: #7d5260;
  --on-tertiary: #ffffff;
  --tertiary-container: #ffd8e4;
  --on-tertiary-container: #31111d;
  --error: #b3261e;
  --on-error: #ffffff;
  --error-container: #f9dedc;
  --on-error-container: #410e0b;
  --success: #2e6b4f;
  --success-container: #cdece0;
  --on-success-container: #082017;

  --surface: #fef7ff;
  --on-surface: #1d1b20;
  --surface-variant: #e7e0ec;
  --on-surface-variant: #49454f;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f7f2fa;
  --surface-container: #f3edf7;
  --surface-container-high: #ece6f0;
  --surface-container-highest: #e6e0e9;
  --outline: #79747e;
  --outline-variant: #cac4d0;
  --inverse-surface: #322f35;
  --inverse-on-surface: #f5eff7;
  --inverse-primary: #d0bcff;
  --scrim-color: 0 0 0;

  /* Shape — deliberately large; this is the loudest Expressive signal. */
  --shape-xs: 8px;
  --shape-s: 12px;
  --shape-m: 16px;
  --shape-l: 20px;
  --shape-xl: 28px;
  --shape-xxl: 36px;
  --shape-full: 999px;

  /* Motion — emphasised easing with a hint of overshoot for spatial moves. */
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --ease-emphasised: cubic-bezier(0.05, 0.7, 0.1, 1);
  --ease-spring: cubic-bezier(0.32, 1.5, 0.44, 1);
  --dur-short: 150ms;
  --dur-medium: 250ms;
  --dur-long: 400ms;

  --elev-1: 0 1px 2px rgb(0 0 0 / 0.28), 0 1px 3px 1px rgb(0 0 0 / 0.12);
  --elev-2: 0 1px 2px rgb(0 0 0 / 0.28), 0 2px 6px 2px rgb(0 0 0 / 0.14);
  --elev-3: 0 4px 8px 3px rgb(0 0 0 / 0.14), 0 1px 3px rgb(0 0 0 / 0.28);

  --rail-width: 96px;
  --navbar-height: 76px;
  --content-max: 1120px;

  --font: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system,
    "Noto Sans", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --primary: #d0bcff;
    --on-primary: #381e72;
    --primary-container: #4f378b;
    --on-primary-container: #eaddff;
    --secondary: #ccc2dc;
    --on-secondary: #332d41;
    --secondary-container: #4a4458;
    --on-secondary-container: #e8def8;
    --tertiary: #efb8c8;
    --on-tertiary: #492532;
    --tertiary-container: #633b48;
    --on-tertiary-container: #ffd8e4;
    --error: #f2b8b5;
    --on-error: #601410;
    --error-container: #8c1d18;
    --on-error-container: #f9dedc;
    --success: #8fd6b4;
    --success-container: #1c4736;
    --on-success-container: #cdece0;

    --surface: #141218;
    --on-surface: #e6e0e9;
    --surface-variant: #49454f;
    --on-surface-variant: #cac4d0;
    --surface-container-lowest: #0f0d13;
    --surface-container-low: #1d1b20;
    --surface-container: #211f26;
    --surface-container-high: #2b2930;
    --surface-container-highest: #36343b;
    --outline: #938f99;
    --outline-variant: #49454f;
    --inverse-surface: #e6e0e9;
    --inverse-on-surface: #322f35;
    --inverse-primary: #6750a4;
    --scrim-color: 0 0 0;
  }
}

:root[data-theme="dark"] {
  --primary: #d0bcff;
  --on-primary: #381e72;
  --primary-container: #4f378b;
  --on-primary-container: #eaddff;
  --secondary: #ccc2dc;
  --on-secondary: #332d41;
  --secondary-container: #4a4458;
  --on-secondary-container: #e8def8;
  --tertiary: #efb8c8;
  --on-tertiary: #492532;
  --tertiary-container: #633b48;
  --on-tertiary-container: #ffd8e4;
  --error: #f2b8b5;
  --on-error: #601410;
  --error-container: #8c1d18;
  --on-error-container: #f9dedc;
  --success: #8fd6b4;
  --success-container: #1c4736;
  --on-success-container: #cdece0;

  --surface: #141218;
  --on-surface: #e6e0e9;
  --surface-variant: #49454f;
  --on-surface-variant: #cac4d0;
  --surface-container-lowest: #0f0d13;
  --surface-container-low: #1d1b20;
  --surface-container: #211f26;
  --surface-container-high: #2b2930;
  --surface-container-highest: #36343b;
  --outline: #938f99;
  --outline-variant: #49454f;
  --inverse-surface: #e6e0e9;
  --inverse-on-surface: #322f35;
  --inverse-primary: #6750a4;
}

/* -------------------------------------------------------------------- base */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--surface);
  color: var(--on-surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* Kill the 300ms tap delay and rubber-band chaining on mobile. */
  touch-action: manipulation;
  overscroll-behavior-y: none;
}

body.is-locked {
  overflow: hidden;
}

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

button {
  border: none;
  background: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

svg {
  display: block;
  width: 100%;
  height: 100%;
  fill: none;
}

[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
  border-radius: var(--shape-xs);
}

::selection {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

/* ------------------------------------------------------------------ login */

.login {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px max(24px, env(safe-area-inset-left)) max(24px, env(safe-area-inset-bottom));
  background:
    radial-gradient(120% 80% at 10% 0%, color-mix(in srgb, var(--primary) 22%, transparent), transparent 60%),
    radial-gradient(100% 80% at 100% 100%, color-mix(in srgb, var(--tertiary) 20%, transparent), transparent 60%),
    var(--surface);
}

.login__card {
  width: min(420px, 100%);
  padding: 40px 28px 32px;
  border-radius: var(--shape-xxl);
  background: var(--surface-container-low);
  box-shadow: var(--elev-2);
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: center;
  animation: rise var(--dur-long) var(--ease-emphasised) both;
}

.login__mark {
  width: 56px;
  height: 56px;
  margin: 0 auto;
  color: var(--primary);
}

.login__title {
  margin: 0;
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.login__subtitle {
  margin: -8px 0 8px;
  color: var(--on-surface-variant);
  font-size: 0.95rem;
}

.login__form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* A hairline with a word in it, separating the provider from the fallback. */
.login__divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--on-surface-variant);
  font-size: 0.85rem;
}

.login__divider::before,
.login__divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--outline-variant);
}

.login__error {
  margin: 0;
  color: var(--error);
  font-size: 0.9rem;
}

.login__note {
  margin: 0;
  color: var(--on-surface-variant);
  font-size: 0.85rem;
  line-height: 1.4;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.96);
  }
}

/* ------------------------------------------------------------------ shell */

.shell {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 1fr;
}

.main {
  min-width: 0;
  padding-bottom: calc(var(--navbar-height) + env(safe-area-inset-bottom) + 96px);
}

.page {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: page-in var(--dur-medium) var(--ease-emphasised) both;
}

@keyframes page-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
}

/* ------------------------------------------------------------ demo banner */

.demo-banner {
  position: sticky;
  top: 0;
  z-index: 21;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px max(16px, env(safe-area-inset-left));
  padding-top: max(10px, env(safe-area-inset-top));
  background: var(--tertiary-container);
  color: var(--on-tertiary-container);
  font-size: 0.82rem;
  line-height: 1.4;
}

.demo-banner__badge {
  flex: none;
  padding: 3px 10px;
  border-radius: var(--shape-full);
  background: var(--on-tertiary-container);
  color: var(--tertiary-container);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* The app bar sticks below the banner rather than over it. */
.demo-banner:not([hidden]) ~ .topbar {
  top: 0;
  padding-top: 12px;
}

/* ----------------------------------------------------------------- topbar */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: max(12px, env(safe-area-inset-top)) 16px 12px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-short) var(--ease-standard);
}

.topbar.is-stuck {
  border-bottom-color: var(--outline-variant);
}

.topbar__row {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar__title {
  margin: 0;
  flex: 1;
  font-size: clamp(1.5rem, 1.15rem + 1.6vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.topbar__subtitle {
  max-width: var(--content-max);
  margin: 2px auto 0;
  color: var(--on-surface-variant);
  font-size: 0.875rem;
}

.topbar__subtitle:empty {
  display: none;
}

.topbar__actions {
  display: flex;
  gap: 4px;
  align-items: center;
}

/* Who you are signed in as. Narrow screens have no room for it. */
.topbar__account {
  max-width: 12rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding: 4px 12px;
  border-radius: var(--shape-full);
  background: var(--surface-container-high);
  color: var(--on-surface-variant);
  font-size: 0.85rem;
}

@media (max-width: 600px) {
  .topbar__account {
    display: none;
  }
}

/*
 * A viewer has a single page, so the bottom bar would be a row with one button
 * in it — worse than no bar at all. The rail keeps its brand mark and theme
 * switch, which are still useful.
 */
body.is-viewer .navbar {
  display: none;
}

body.is-viewer .main {
  padding-bottom: calc(env(safe-area-inset-bottom) + 48px);
}

body.is-viewer .snackbar {
  bottom: calc(env(safe-area-inset-bottom) + 16px);
}

/* ------------------------------------------------------------- navigation */

.rail {
  display: none;
}

.navbar {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 30;
  display: flex;
  justify-content: space-around;
  align-items: flex-start;
  gap: 4px;
  height: calc(var(--navbar-height) + env(safe-area-inset-bottom));
  padding: 10px 8px env(safe-area-inset-bottom);
  background: color-mix(in srgb, var(--surface-container) 94%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--outline-variant);
}

.navbar__item {
  flex: 1;
  min-width: 0;
  min-height: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0;
  color: var(--on-surface-variant);
  transition: color var(--dur-short) var(--ease-standard);
}

.navbar__pill {
  width: 64px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: var(--shape-full);
  transition:
    background-color var(--dur-medium) var(--ease-emphasised),
    transform var(--dur-medium) var(--ease-spring);
}

.navbar__pill svg {
  width: 24px;
  height: 24px;
}

.navbar__label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* Five destinations no longer fit a narrow phone at the default sizes, and a
   clipped label is worse than a slightly smaller one. */
@media (max-width: 420px) {
  .navbar {
    gap: 0;
    padding-left: 2px;
    padding-right: 2px;
  }

  .navbar__pill {
    width: 100%;
    max-width: 56px;
  }

  .navbar__label {
    font-size: 0.66rem;
    letter-spacing: 0;
  }
}

.navbar__item.is-active {
  color: var(--on-secondary-container);
}

.navbar__item.is-active .navbar__pill {
  background: var(--secondary-container);
  transform: scale(1.04);
}

.navbar__item:active .navbar__pill {
  transform: scale(0.92);
}

/* -------------------------------------------------------------- utilities */

.grid {
  display: grid;
  gap: 12px;
}

.grid--2 {
  grid-template-columns: 1fr;
}

.grid--3 {
  grid-template-columns: 1fr;
}

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

.spacer {
  flex: 1;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.85em;
  word-break: break-all;
}

.muted {
  color: var(--on-surface-variant);
}

/* ---------------------------------------------------------------- buttons */

.btn {
  min-height: 44px;
  padding: 10px 22px;
  border-radius: var(--shape-full);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
  transition:
    background-color var(--dur-short) var(--ease-standard),
    border-radius var(--dur-medium) var(--ease-spring),
    transform var(--dur-short) var(--ease-standard),
    box-shadow var(--dur-short) var(--ease-standard),
    opacity var(--dur-short) var(--ease-standard);
}

/* Shape morph on press — the signature Expressive interaction. */
.btn:active {
  border-radius: var(--shape-s);
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn--filled {
  background: var(--primary);
  color: var(--on-primary);
}

.btn--tonal {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
}

.btn--outlined {
  border: 1px solid var(--outline);
  color: var(--primary);
}

.btn--text {
  padding: 10px 14px;
  color: var(--primary);
}

.btn--danger {
  color: var(--error);
  border-color: color-mix(in srgb, var(--error) 60%, transparent);
}

.btn--full {
  width: 100%;
}

.btn--small {
  min-height: 38px;
  padding: 8px 16px;
  font-size: 0.875rem;
}

@media (hover: hover) {
  .btn--filled:hover {
    box-shadow: var(--elev-1);
    background: color-mix(in srgb, var(--primary) 92%, var(--on-primary));
  }
  .btn--tonal:hover {
    background: color-mix(in srgb, var(--secondary-container) 92%, var(--on-secondary-container));
  }
  .btn--outlined:hover,
  .btn--text:hover {
    background: color-mix(in srgb, var(--primary) 10%, transparent);
  }
}

.icon-btn {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: var(--shape-full);
  color: var(--on-surface-variant);
  transition:
    background-color var(--dur-short) var(--ease-standard),
    transform var(--dur-short) var(--ease-spring);
}

.icon-btn svg {
  width: 24px;
  height: 24px;
}

.icon-btn:active {
  transform: scale(0.88);
}

@media (hover: hover) {
  .icon-btn:hover {
    background: color-mix(in srgb, var(--on-surface) 8%, transparent);
  }
}

/* -------------------------------------------------------------------- fab */

.fab {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: calc(var(--navbar-height) + env(safe-area-inset-bottom) + 16px);
  z-index: 25;
  min-height: 56px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border-radius: var(--shape-l);
  background: var(--primary-container);
  color: var(--on-primary-container);
  box-shadow: var(--elev-3);
  font-weight: 650;
  transition:
    transform var(--dur-medium) var(--ease-spring),
    border-radius var(--dur-medium) var(--ease-spring),
    opacity var(--dur-medium) var(--ease-standard);
}

.fab svg {
  width: 24px;
  height: 24px;
  flex: none;
}

.fab:active {
  transform: scale(0.93);
  border-radius: var(--shape-xl);
}

.fab.is-hidden {
  opacity: 0;
  transform: translateY(24px) scale(0.8);
  pointer-events: none;
}

/* ------------------------------------------------------------------- card */

.card {
  border-radius: var(--shape-xl);
  background: var(--surface-container-low);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card--form {
  background: var(--surface-container-low);
}

.card__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 650;
}

.card__hint {
  margin: -8px 0 0;
  color: var(--on-surface-variant);
  font-size: 0.85rem;
  line-height: 1.45;
}

.card__actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ------------------------------------------------------------------ stats */

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.stat {
  padding: 14px 16px;
  border-radius: var(--shape-l);
  background: var(--surface-container);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat__value {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.stat__label {
  font-size: 0.78rem;
  color: var(--on-surface-variant);
}

.stat--accent {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.stat--accent .stat__label {
  color: inherit;
  opacity: 0.75;
}

/* ------------------------------------------------------------------- list */

.list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.list__more {
  display: flex;
  justify-content: center;
  padding: 8px 0 24px;
}

.empty {
  /* A fixed footprint: swapping skeletons or a list for this must not make the
     page jump, and the rounded corners must never appear to flicker. */
  min-height: 232px;
  padding: 48px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  color: var(--on-surface-variant);
  border-radius: var(--shape-xl);
  background: var(--surface-container-low);
}

.empty__title {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 650;
  color: var(--on-surface);
}

.empty p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
}

/* --------------------------------------------------------- profile cards */

.profile {
  border-radius: var(--shape-xl);
  background: var(--surface-container-low);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background-color var(--dur-short) var(--ease-standard);
}

.profile.is-disabled {
  opacity: 0.62;
}

.profile__head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.profile__title {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.profile__name {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
}

.profile__upstream {
  font-size: 0.8rem;
  color: var(--on-surface-variant);
  overflow-wrap: anywhere;
}

.profile__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.profile__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--shape-m);
  background: var(--surface-container-high);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  overflow: hidden;
}

.profile__link span {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  direction: rtl;
  text-align: left;
}

.profile__actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  padding: 5px 11px;
  border-radius: var(--shape-full);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.02em;
  background: var(--surface-container-highest);
  color: var(--on-surface-variant);
  white-space: nowrap;
}

.badge--primary {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.badge--tertiary {
  background: var(--tertiary-container);
  color: var(--on-tertiary-container);
}

.badge--error {
  background: var(--error-container);
  color: var(--on-error-container);
}

.badge--success {
  background: var(--success-container);
  color: var(--on-success-container);
}

/* ------------------------------------------------------------------ field */

.field {
  position: relative;
  display: block;
}

.field__input,
.field__select,
.field__textarea {
  width: 100%;
  min-height: 56px;
  padding: 24px 16px 8px;
  border: none;
  border-bottom: 1px solid var(--outline);
  border-radius: var(--shape-s) var(--shape-s) 0 0;
  background: var(--surface-container-highest);
  /* 16px keeps iOS Safari from zooming the viewport on focus. */
  font-size: 16px;
  transition:
    border-color var(--dur-short) var(--ease-standard),
    background-color var(--dur-short) var(--ease-standard);
}

.field__textarea {
  min-height: 96px;
  padding-top: 26px;
  resize: vertical;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.5;
}

.field__input:focus,
.field__select:focus,
.field__textarea:focus {
  outline: none;
  border-bottom: 2px solid var(--primary);
  padding-bottom: 7px;
}

.field__label {
  position: absolute;
  left: 16px;
  top: 18px;
  font-size: 1rem;
  color: var(--on-surface-variant);
  pointer-events: none;
  transition:
    top var(--dur-short) var(--ease-emphasised),
    font-size var(--dur-short) var(--ease-emphasised),
    color var(--dur-short) var(--ease-standard);
}

.field__input:focus + .field__label,
.field__input:not(:placeholder-shown) + .field__label,
.field__textarea:focus + .field__label,
.field__textarea:not(:placeholder-shown) + .field__label,
.field__select + .field__label {
  top: 8px;
  font-size: 0.72rem;
  font-weight: 600;
}

.field__input:focus + .field__label,
.field__textarea:focus + .field__label {
  color: var(--primary);
}

.field__select {
  appearance: none;
  padding-right: 40px;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%),
    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: calc(100% - 20px) calc(50% + 4px), calc(100% - 14px) calc(50% + 4px);
  background-size: 6px 6px;
  background-repeat: no-repeat;
}

.field__support {
  margin: 4px 0 0 16px;
  font-size: 0.75rem;
  color: var(--on-surface-variant);
}

.field__support--error {
  color: var(--error);
}

.field--invalid .field__input {
  border-bottom-color: var(--error);
}

/* ------------------------------------------------------------------- chip */

.chipset {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chipset--scroll {
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 4px;
  margin: 0 -16px;
  padding-left: 16px;
  padding-right: 16px;
  scroll-snap-type: x proximity;
  overscroll-behavior-x: contain;
}

.chipset--scroll::-webkit-scrollbar {
  display: none;
}

.chipset--scroll > .chip {
  scroll-snap-align: start;
  flex: none;
}

.chip {
  min-height: 36px;
  padding: 7px 14px;
  border-radius: var(--shape-s);
  border: 1px solid var(--outline-variant);
  background: transparent;
  color: var(--on-surface-variant);
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition:
    background-color var(--dur-short) var(--ease-standard),
    color var(--dur-short) var(--ease-standard),
    border-color var(--dur-short) var(--ease-standard),
    border-radius var(--dur-medium) var(--ease-spring),
    transform var(--dur-short) var(--ease-standard);
}

.chip:active {
  transform: scale(0.95);
  border-radius: var(--shape-full);
}

.chip.is-selected {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
  border-color: transparent;
}

.chip--assist {
  border-radius: var(--shape-full);
  border-style: dashed;
}

.chip--preset {
  border-radius: var(--shape-m);
  align-items: flex-start;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px;
  text-align: left;
  white-space: normal;
}

.chip--preset b {
  font-weight: 650;
  color: var(--on-surface);
}

.chip--preset small {
  font-weight: 500;
  font-size: 0.72rem;
  opacity: 0.8;
}

/* -------------------------------------------------------------- segmented */

.segmented {
  display: flex;
  border: 1px solid var(--outline);
  border-radius: var(--shape-full);
  overflow: hidden;
}

.segmented__item {
  flex: 1;
  min-height: 44px;
  padding: 8px 12px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--on-surface-variant);
  border-right: 1px solid var(--outline);
  transition:
    background-color var(--dur-medium) var(--ease-emphasised),
    color var(--dur-short) var(--ease-standard);
}

.segmented__item:last-child {
  border-right: none;
}

.segmented__item.is-selected {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
}

/* ----------------------------------------------------------------- switch */

.switch {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  cursor: pointer;
}

.switch__track {
  position: relative;
  flex: none;
  width: 52px;
  height: 32px;
  border-radius: var(--shape-full);
  border: 2px solid var(--outline);
  background: var(--surface-container-highest);
  transition:
    background-color var(--dur-medium) var(--ease-emphasised),
    border-color var(--dur-medium) var(--ease-emphasised);
}

.switch__thumb {
  position: absolute;
  top: 50%;
  left: 6px;
  width: 16px;
  height: 16px;
  border-radius: var(--shape-full);
  background: var(--outline);
  transform: translate(0, -50%);
  transition:
    transform var(--dur-medium) var(--ease-spring),
    width var(--dur-medium) var(--ease-spring),
    height var(--dur-medium) var(--ease-spring),
    background-color var(--dur-medium) var(--ease-emphasised),
    left var(--dur-medium) var(--ease-spring);
}

.switch input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.switch input:checked + .switch__track {
  background: var(--primary);
  border-color: var(--primary);
}

.switch input:checked + .switch__track .switch__thumb {
  width: 24px;
  height: 24px;
  left: 2px;
  background: var(--on-primary);
  transform: translate(20px, -50%);
}

.switch input:focus-visible + .switch__track {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

.switch__text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.switch__title {
  font-size: 0.95rem;
  font-weight: 600;
}

.switch__hint {
  font-size: 0.78rem;
  color: var(--on-surface-variant);
}

/* --------------------------------------------------------------- overlays */

.scrim {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgb(var(--scrim-color) / 0.4);
  backdrop-filter: blur(2px);
  animation: fade-in var(--dur-medium) var(--ease-standard) both;
}

.scrim.is-closing {
  animation: fade-out var(--dur-medium) var(--ease-standard) both;
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
}

@keyframes fade-out {
  to {
    opacity: 0;
  }
}

.sheet {
  position: fixed;
  z-index: 50;
  inset: auto 0 0 0;
  max-height: 92dvh;
  display: flex;
  flex-direction: column;
  background: var(--surface-container-low);
  border-radius: var(--shape-xxl) var(--shape-xxl) 0 0;
  box-shadow: var(--elev-3);
  animation: sheet-up var(--dur-long) var(--ease-emphasised) both;
  will-change: transform;
}

.sheet.is-closing {
  animation: sheet-down var(--dur-medium) var(--ease-standard) both;
}

.sheet.is-dragging {
  animation: none;
  transition: none;
}

@keyframes sheet-up {
  from {
    transform: translateY(100%);
  }
}

@keyframes sheet-down {
  to {
    transform: translateY(100%);
  }
}

.sheet__handle {
  padding: 12px 0 4px;
  display: grid;
  place-items: center;
  cursor: grab;
  touch-action: none;
}

.sheet__handle span {
  width: 40px;
  height: 4px;
  border-radius: var(--shape-full);
  background: var(--outline-variant);
}

.sheet__header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px 8px 20px;
}

.sheet__title {
  flex: 1;
  margin: 0;
  font-size: 1.25rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.sheet__body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  padding: 4px 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  scrollbar-gutter: stable;
}

.sheet__footer {
  display: flex;
  gap: 8px;
  padding: 12px 20px calc(12px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--outline-variant);
  background: var(--surface-container-low);
}

.sheet__footer:empty {
  display: none;
}

.sheet__footer .btn {
  flex: 1;
}

/* ---------------------------------------------------------------- section */

.section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section__title {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
}

.section__hint {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--on-surface-variant);
}

.section__warning {
  margin: 0;
  padding: 10px 14px;
  border-radius: var(--shape-m);
  background: var(--tertiary-container);
  color: var(--on-tertiary-container);
  font-size: 0.82rem;
  line-height: 1.45;
}

.section__warning:empty,
.section__warning[hidden] {
  display: none;
}

/* -------------------------------------------------------- regexp builder */

.conditions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.condition {
  display: grid;
  grid-template-columns: 1fr 48px;
  gap: 8px;
  align-items: start;
  padding: 12px;
  border-radius: var(--shape-l);
  background: var(--surface-container);
  animation: rise var(--dur-medium) var(--ease-spring) both;
}

.condition__fields {
  display: grid;
  gap: 8px;
}

/* ------------------------------------------------------- aggregate sources */

.sources {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 12px;
}

.source {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px;
  border-radius: var(--shape-l);
  background: var(--surface-container);
  animation: rise var(--dur-medium) var(--ease-spring) both;
}

.source__head {
  display: flex;
  align-items: center;
  gap: 8px;
}

.source__index {
  flex: none;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--surface-container-highest);
  font-size: 0.72rem;
  font-weight: 650;
  color: var(--on-surface-variant);
}

.source__name {
  min-width: 0;
  font-size: 0.92rem;
  font-weight: 650;
  overflow-wrap: anywhere;
}

.source__name--missing {
  color: var(--error);
  font-weight: 500;
}

.regex-preview {
  padding: 12px 14px;
  border-radius: var(--shape-m);
  background: var(--surface-container-highest);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.5;
  word-break: break-all;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.regex-preview code {
  flex: 1;
  min-width: 0;
}

.regex-preview--empty {
  color: var(--on-surface-variant);
  font-family: var(--font);
}

/* ---------------------------------------------------------- test results */

.test-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.test-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 46vh;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 4px;
}

.node {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--shape-m);
  background: var(--surface-container);
  /* Long node lists stay cheap to paint. */
  content-visibility: auto;
  contain-intrinsic-size: auto 52px;
}

.node--dropped {
  opacity: 0.72;
  background: transparent;
  border: 1px dashed var(--outline-variant);
}

.node__mark {
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: var(--shape-full);
  display: grid;
  place-items: center;
  background: var(--success-container);
  color: var(--on-success-container);
  font-size: 0.8rem;
  font-weight: 800;
}

.node--dropped .node__mark {
  background: var(--error-container);
  color: var(--on-error-container);
}

.node__text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.node__name {
  font-size: 0.9rem;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.node__reason {
  font-size: 0.75rem;
  color: var(--on-surface-variant);
  overflow-wrap: anywhere;
}

/* ---------------------------------------------------------------- qr view */

.qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.qr__frame {
  width: min(280px, 72vw);
  aspect-ratio: 1;
  padding: 12px;
  border-radius: var(--shape-xl);
  /* A QR must stay dark-on-light regardless of the app theme, or it stops
     scanning — so this frame is intentionally not themed. */
  background: #ffffff;
  box-shadow: var(--elev-1);
}

.qr__frame svg,
.qr__frame img {
  width: 100%;
  height: 100%;
}

.qr__url {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--shape-m);
  background: var(--surface-container-highest);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  word-break: break-all;
  text-align: center;
}

/* ----------------------------------------------------------------- toolbar */

.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 4px;
}

.toolbar .chipset {
  flex: 1;
}

.toolbar__title {
  flex: 1;
  margin: 0;
  font-size: 1rem;
  font-weight: 650;
}

.list[aria-busy="true"] {
  opacity: 0.55;
  transition: opacity var(--dur-short) var(--ease-standard);
}

/* -------------------------------------------------------------- log entry */

.log {
  border-radius: var(--shape-l);
  background: var(--surface-container-low);
  overflow: hidden;
  content-visibility: auto;
  contain-intrinsic-size: auto 104px;
}

.log__head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  text-align: left;
}

.log__dot {
  flex: none;
  width: 10px;
  height: 10px;
  border-radius: var(--shape-full);
  background: var(--success);
}

.log__dot--error {
  background: var(--error);
}

.log__dot--warn {
  background: var(--tertiary);
}

.log__text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.log__title {
  font-size: 0.92rem;
  font-weight: 650;
  overflow-wrap: anywhere;
}

.log__meta {
  font-size: 0.76rem;
  color: var(--on-surface-variant);
  overflow-wrap: anywhere;
}

.log__count {
  flex: none;
  font-size: 0.8rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--on-surface-variant);
}

.log__chevron {
  flex: none;
  width: 20px;
  height: 20px;
  color: var(--on-surface-variant);
  transition: transform var(--dur-medium) var(--ease-emphasised);
}

.log.is-open .log__chevron {
  transform: rotate(180deg);
}

.log__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-medium) var(--ease-emphasised);
}

.log.is-open .log__body {
  grid-template-rows: 1fr;
}

.log__inner {
  overflow: hidden;
}

.log__detail {
  padding: 0 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.kv {
  display: grid;
  grid-template-columns: minmax(120px, auto) 1fr;
  gap: 4px 12px;
  font-size: 0.8rem;
}

.kv dt {
  color: var(--on-surface-variant);
}

.kv dd {
  margin: 0;
  overflow-wrap: anywhere;
}

/* --------------------------------------------------------------- snackbar */

.snackbar {
  position: fixed;
  left: 50%;
  bottom: calc(var(--navbar-height) + env(safe-area-inset-bottom) + 16px);
  z-index: 60;
  transform: translateX(-50%);
  width: max-content;
  max-width: min(560px, calc(100vw - 32px));
  padding: 14px 20px;
  border-radius: var(--shape-m);
  background: var(--inverse-surface);
  color: var(--inverse-on-surface);
  box-shadow: var(--elev-3);
  font-size: 0.9rem;
  animation: snack-in var(--dur-medium) var(--ease-spring) both;
}

.snackbar--action {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px 10px 20px;
}

.snackbar__text {
  flex: 1;
  min-width: 0;
}

.snackbar__action {
  flex: none;
  min-height: 40px;
  padding: 8px 16px;
  border-radius: var(--shape-full);
  color: var(--inverse-primary, #d0bcff);
  font-weight: 700;
  font-size: 0.9rem;
  transition:
    background-color var(--dur-short) var(--ease-standard),
    border-radius var(--dur-medium) var(--ease-spring),
    transform var(--dur-short) var(--ease-standard);
}

.snackbar__action:active {
  transform: scale(0.95);
  border-radius: var(--shape-s);
}

@media (hover: hover) {
  .snackbar__action:hover {
    background: color-mix(in srgb, var(--inverse-on-surface) 14%, transparent);
  }
}

/* The undo window, drawn as a depleting ring around the remaining seconds. */
.countdown {
  position: relative;
  flex: none;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
}

.countdown svg {
  position: absolute;
  inset: 0;
  transform: rotate(-90deg);
}

.countdown__track {
  stroke: color-mix(in srgb, var(--inverse-on-surface) 25%, transparent);
}

.countdown__progress {
  stroke: var(--inverse-primary, #d0bcff);
  stroke-linecap: round;
  stroke-dasharray: 62.83; /* 2πr, r = 10 */
  animation: countdown-deplete var(--countdown-duration, 7000ms) linear both;
}

.countdown__value {
  position: relative;
  font-size: 0.72rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

@keyframes countdown-deplete {
  from {
    stroke-dashoffset: 0;
  }
  to {
    stroke-dashoffset: 62.83;
  }
}

.snackbar--error {
  background: var(--error);
  color: var(--on-error);
}

.snackbar.is-closing {
  animation: snack-out var(--dur-short) var(--ease-standard) both;
}

@keyframes snack-in {
  from {
    opacity: 0;
    transform: translate(-50%, 20px) scale(0.9);
  }
}

@keyframes snack-out {
  to {
    opacity: 0;
    transform: translate(-50%, 12px);
  }
}

/* -------------------------------------------------------------- templates */

.template-grid {
  display: grid;
  gap: 10px;
}

.template-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  text-align: left;
  border-radius: var(--shape-l);
  background: var(--surface-container);
  color: inherit;
  transition:
    background-color var(--dur-short) var(--ease-standard),
    border-radius var(--dur-medium) var(--ease-spring),
    transform var(--dur-short) var(--ease-standard);
}

.template-card:active {
  transform: scale(0.98);
  border-radius: var(--shape-xl);
}

@media (hover: hover) {
  .template-card:hover {
    background: var(--surface-container-high);
  }
}

.template-card__name {
  font-size: 1rem;
  font-weight: 650;
}

.template-card__desc {
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--on-surface-variant);
}

.template-card__badges,
.template-row__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 2px;
}

.list--templates {
  gap: 8px;
}

.template-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 8px 12px 14px;
  border-radius: var(--shape-l);
  background: var(--surface-container);
}

.template-row__text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.template-row__name {
  font-size: 0.95rem;
  font-weight: 650;
  overflow-wrap: anywhere;
}

.template-row__desc {
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--on-surface-variant);
  overflow-wrap: anywhere;
}

/* ------------------------------------------------------------------ probe */

.probe {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.probe__qr {
  width: min(240px, 62vw);
  flex: none;
}

.probe__side {
  flex: 1;
  min-width: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.capture {
  border-radius: var(--shape-xl);
  background: var(--surface-container-low);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  content-visibility: auto;
  contain-intrinsic-size: auto 240px;
}

.capture__head {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.capture__title {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.capture__name {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 650;
  overflow-wrap: anywhere;
}

.capture__meta {
  font-size: 0.78rem;
  color: var(--on-surface-variant);
}

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

/* ---------------------------------------------------------- code editor */

.editor-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.editor-toolbar .segmented {
  width: auto;
  min-width: 180px;
}

.editor {
  display: flex;
  min-height: 320px;
  height: clamp(320px, 48dvh, 620px);
  border-radius: var(--shape-m);
  background: var(--surface-container-highest);
  overflow: hidden;
  font-family: var(--font-mono);
  /* 16px keeps iOS from zooming the viewport when the textarea takes focus. */
  font-size: 16px;
  line-height: 1.5;
  tab-size: 2;
}

.editor__gutter {
  flex: none;
  width: 3.5em;
  padding: 12px 8px 12px 0;
  overflow: hidden;
  text-align: right;
  color: var(--on-surface-variant);
  opacity: 0.6;
  user-select: none;
  border-right: 1px solid var(--outline-variant);
}

.editor__lines {
  white-space: pre;
  font-variant-numeric: tabular-nums;
  will-change: transform;
}

.editor__area {
  position: relative;
  flex: 1;
  min-width: 0;
}

.editor__highlight,
.editor__input {
  position: absolute;
  inset: 0;
  margin: 0;
  padding: 12px 14px;
  border: none;
  font: inherit;
  line-height: inherit;
  tab-size: inherit;
  white-space: pre;
  overflow: auto;
  overscroll-behavior: contain;
}

.editor__highlight {
  pointer-events: none;
  color: var(--on-surface);
  background: transparent;
  scrollbar-width: none;
}

.editor__highlight::-webkit-scrollbar {
  display: none;
}

.editor__input {
  background: transparent;
  color: transparent;
  caret-color: var(--primary);
  resize: none;
  -webkit-text-fill-color: transparent;
}

.editor__input:focus {
  outline: none;
}

.editor__input::selection {
  background: color-mix(in srgb, var(--primary) 35%, transparent);
}

.tok-key {
  color: var(--primary);
  font-weight: 600;
}

.tok-str {
  color: #2e6b4f;
}

.tok-num,
.tok-lit {
  color: #7d5260;
}

.tok-com {
  color: var(--on-surface-variant);
  opacity: 0.75;
  font-style: italic;
}

:root[data-theme="dark"] .tok-str,
:root[data-theme="auto"] .tok-str {
  color: #8fd6b4;
}

:root[data-theme="dark"] .tok-num,
:root[data-theme="dark"] .tok-lit,
:root[data-theme="auto"] .tok-num,
:root[data-theme="auto"] .tok-lit {
  color: #efb8c8;
}

@media (prefers-color-scheme: light) {
  :root[data-theme="auto"] .tok-str {
    color: #2e6b4f;
  }
  :root[data-theme="auto"] .tok-num,
  :root[data-theme="auto"] .tok-lit {
    color: #7d5260;
  }
}

.editor-status {
  padding: 12px 14px;
  border-radius: var(--shape-m);
  background: var(--surface-container);
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

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

.editor-status--ok {
  background: var(--success-container);
  color: var(--on-success-container);
}

.editor-status--error {
  background: var(--error-container);
  color: var(--on-error-container);
}

.editor-status__title {
  margin: 0;
  font-weight: 700;
}

.editor-status__line {
  margin: 0;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

/* ------------------------------------------------------------------- help */

.help__toc {
  position: sticky;
  top: -4px;
  z-index: 2;
  padding-top: 4px;
  padding-bottom: 8px;
  background: var(--surface-container-low);
}

.help__section {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-bottom: 8px;
  scroll-margin-top: 56px;
  content-visibility: auto;
  contain-intrinsic-size: auto 400px;
}

.help__title {
  margin: 8px 0 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--primary);
}

.help__p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.6;
}

.help__note,
.help__warn {
  margin: 0;
  padding: 12px 14px;
  border-radius: var(--shape-m);
  font-size: 0.88rem;
  line-height: 1.55;
}

.help__note {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
}

.help__warn {
  background: var(--tertiary-container);
  color: var(--on-tertiary-container);
}

.help__steps,
.help__list {
  margin: 0;
  padding-left: 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.92rem;
  line-height: 1.55;
}

.help__steps li::marker {
  font-weight: 700;
  color: var(--primary);
}

.help__figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.help__figure figcaption {
  font-size: 0.78rem;
  color: var(--on-surface-variant);
  text-align: center;
}

.help__code {
  margin: 0;
  padding: 14px;
  border-radius: var(--shape-m);
  background: var(--surface-container-highest);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.55;
  overflow-x: auto;
  overscroll-behavior-x: contain;
}

.help__tablewrap {
  overflow-x: auto;
  overscroll-behavior-x: contain;
  border-radius: var(--shape-m);
  background: var(--surface-container);
}

.help__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  min-width: 460px;
}

.help__table th,
.help__table td {
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.45;
}

.help__table th {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  white-space: nowrap;
}

.help__table tbody tr {
  border-top: 1px solid var(--outline-variant);
}

.help__table td:first-child {
  font-weight: 600;
}

.demo {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  border-radius: var(--shape-l);
  background: var(--surface-container);
}

.demo__title {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary);
}

.demo .test-list {
  max-height: none;
}

/* -------------------------------------------------------------- skeletons */

.skeleton {
  border-radius: var(--shape-xl);
  background: linear-gradient(
    100deg,
    var(--surface-container-low) 30%,
    var(--surface-container-high) 50%,
    var(--surface-container-low) 70%
  );
  background-size: 240% 100%;
  animation: shimmer 1.4s linear infinite;
  /* Fixed height, so replacing it with real content never shifts the layout. */
  height: 148px;
}

.skeleton--log {
  height: 76px;
  border-radius: var(--shape-l);
}

@keyframes shimmer {
  to {
    background-position: -240% 0;
  }
}

/* ====================================================================== */
/* Desktop: navigation rail replaces the bottom bar, sheets become dialogs */
/* ====================================================================== */

@media (min-width: 840px) {
  .shell {
    grid-template-columns: var(--rail-width) 1fr;
  }

  .rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    position: sticky;
    top: 0;
    height: 100dvh;
    padding: 20px 8px 20px;
    background: var(--surface-container-low);
  }

  .rail__brand {
    width: 40px;
    height: 40px;
    margin-bottom: 14px;
    color: var(--primary);
  }

  .rail__item {
    width: 100%;
    padding: 6px 0 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    color: var(--on-surface-variant);
    border-radius: var(--shape-m);
    transition: color var(--dur-short) var(--ease-standard);
  }

  .rail__icon {
    width: 56px;
    height: 32px;
    display: grid;
    place-items: center;
    border-radius: var(--shape-full);
    transition:
      background-color var(--dur-medium) var(--ease-emphasised),
      transform var(--dur-medium) var(--ease-spring);
  }

  .rail__icon svg {
    width: 24px;
    height: 24px;
  }

  .rail__label {
    font-size: 0.72rem;
    font-weight: 650;
  }

  .rail__item.is-active {
    color: var(--on-secondary-container);
  }

  .rail__item.is-active .rail__icon {
    background: var(--secondary-container);
  }

  .rail__item:active .rail__icon {
    transform: scale(0.9);
  }

  .rail__spacer {
    flex: 1;
  }

  .rail__item--minor {
    color: var(--on-surface-variant);
    opacity: 0.85;
  }

  .navbar {
    display: none;
  }

  .icon-btn--mobile {
    display: none;
  }

  .main {
    padding-bottom: 120px;
  }

  .page,
  .topbar__row,
  .topbar__subtitle {
    padding-left: 24px;
    padding-right: 24px;
  }

  .topbar {
    padding-left: 0;
    padding-right: 0;
  }

  .fab {
    bottom: 32px;
    right: 32px;
  }

  .stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .grid--2 {
    grid-template-columns: 1fr 1fr;
  }

  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .profile {
    padding: 22px;
  }

  .condition {
    grid-template-columns: 1fr 48px;
  }

  .condition__fields {
    grid-template-columns: 220px 1fr;
  }

  .probe {
    flex-direction: row;
    align-items: flex-start;
  }

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

  /* Bottom sheet becomes a centred dialog. */
  .sheet {
    inset: 50% auto auto 50%;
    transform: translate(-50%, -50%);
    width: min(720px, calc(100vw - 64px));
    max-height: min(86dvh, 900px);
    border-radius: var(--shape-xxl);
    animation: dialog-in var(--dur-medium) var(--ease-emphasised) both;
  }

  .sheet.is-closing {
    animation: dialog-out var(--dur-short) var(--ease-standard) both;
  }

  .sheet--wide {
    width: min(1040px, calc(100vw - 64px));
    max-height: min(92dvh, 1000px);
  }

  .sheet--wide .editor {
    /* Roomier on a desktop, where the config is actually edited. */
    height: clamp(360px, 56dvh, 700px);
    font-size: 13.5px;
  }

  .sheet__handle {
    display: none;
  }

  .sheet__header {
    padding: 20px 12px 8px 24px;
  }

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

  .sheet__footer {
    padding: 14px 24px;
    justify-content: flex-end;
  }

  .sheet__footer .btn {
    flex: none;
    min-width: 120px;
  }

  @keyframes dialog-in {
    from {
      opacity: 0;
      transform: translate(-50%, -46%) scale(0.94);
    }
  }

  @keyframes dialog-out {
    to {
      opacity: 0;
      transform: translate(-50%, -52%) scale(0.96);
    }
  }

  .snackbar {
    bottom: 32px;
    left: calc(50% + var(--rail-width) / 2);
  }
}

@media (min-width: 1240px) {
  .list--profiles {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    align-items: start;
  }
}

/* -------------------------------------------------------- accessibility */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-contrast: more) {
  .chip,
  .segmented {
    border-color: currentColor;
  }
  .card,
  .profile,
  .log {
    outline: 1px solid var(--outline-variant);
  }
}