/* Marin customer dashboard.
   Follows "Marin Brand Identity" directly: Graphite field, Yellow Lumen used
   sparingly (the mark, headline figures, primary actions, focus), Concrete
   for secondary text and hairlines, Clean Room for primary text. Inter Light
   for display with -2% tracking; uppercase letter-spaced tags; pill actions
   with a Lumen "+" disc; large soft-cornered panels. Tokens first. */

/* ---------- Design tokens ---------- */
:root {
  /* Brand palette */
  --lumen: #FBE708;
  --graphite: #191715;
  --concrete: #D0CBC8;
  --clean-room: #FFFFFF;

  /* Derived surfaces: lifted Graphite, never pure black. */
  --bg: var(--graphite);
  --surface: #211F1C;
  --surface-raised: #2A2724;
  --line: color-mix(in srgb, var(--concrete) 14%, transparent);
  --line-strong: color-mix(in srgb, var(--concrete) 28%, transparent);

  /* Text */
  --text: var(--clean-room);
  --text-muted: var(--concrete);
  --text-dim: color-mix(in srgb, var(--concrete) 60%, var(--graphite));
  --on-lumen: var(--graphite);

  /* Filled actions and selected options: Concrete, softer than Clean Room
     on Graphite; a touch lighter on hover. */
  --action-fill: var(--concrete);
  --action-fill-hover: color-mix(in srgb, var(--concrete) 70%, var(--clean-room));

  /* Status (independent of Lumen, which is never "error") */
  --status-critical: #F2555A;

  /* Type */
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --tracking-display: -0.02em;
  --tracking-tag: 0.14em;

  /* Rhythm */
  --space: 0.5rem;
  --radius: 20px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --gutter: clamp(1rem, 3vw, 2.5rem);

  /* Motion */
  --transition: 160ms cubic-bezier(0.4, 0, 0.2, 1);
}

@font-face {
  font-family: "Inter";
  src: url("/static/fonts/inter-latin.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

/* Google's sign-in button guidelines require Roboto Medium for its label. */
@font-face {
  font-family: "Roboto";
  src: url("/static/fonts/roboto-latin-500.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

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

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: var(--weight-light);
  font-size: 1rem;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: var(--weight-light);
  letter-spacing: var(--tracking-display);
  line-height: 1.1;
}

h1 { font-size: clamp(1.75rem, 1.2rem + 1.6vw, 2.5rem); }
h2 { font-size: 1.4rem; }

p { margin: 0; }

a {
  color: inherit;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 0.2em;
  transition: color var(--transition), text-decoration-color var(--transition);
}

a:hover {
  color: var(--lumen);
  text-decoration-color: currentColor;
}

code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.875em;
  padding: 0.1em 0.4em;
  border-radius: 6px;
  background: var(--surface-raised);
}

button {
  font: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--lumen);
  outline-offset: 3px;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* The brand "tag" style: small, uppercase, widely letter-spaced. */
.tag {
  font-size: 0.6875rem;
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-tag);
  text-transform: uppercase;
  color: var(--text-dim);
}

.tag.pending {
  margin-top: calc(var(--space) * 3);
}

.tag.pending::before {
  content: "";
  display: inline-block;
  width: 0.5em;
  height: 0.5em;
  margin-right: 0.75em;
  border: 1px solid var(--lumen);
  border-radius: 50%;
  vertical-align: 0.05em;
}

/* ---------- Actions: brand pills ---------- */
.action-primary,
.action-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.4rem 0.4rem 0.4rem 1.25rem;
  border-radius: var(--radius-pill);
  font-weight: var(--weight-regular);
  font-size: 0.9375rem;
  text-decoration: none;
  transition: background-color var(--transition), border-color var(--transition);
}

/* The Lumen "+" disc that closes every brand pill. The cross is drawn as
   two bars rather than a "+" glyph, which sits on the text baseline and
   never centres optically. Even sizes keep both bars on whole pixels. */
.action-primary::after,
.action-secondary::after {
  --cross-length: 0.75rem;
  --cross-weight: 0.125rem;
  content: "";
  flex: none;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background:
    linear-gradient(var(--on-lumen), var(--on-lumen)) center / var(--cross-length) var(--cross-weight) no-repeat,
    linear-gradient(var(--on-lumen), var(--on-lumen)) center / var(--cross-weight) var(--cross-length) no-repeat,
    var(--lumen);
}

.action-primary {
  border: 1px solid var(--action-fill);
  background: var(--action-fill);
  color: var(--graphite);
}

.action-primary:hover {
  background: var(--action-fill-hover);
  border-color: var(--action-fill-hover);
  color: var(--graphite);
}

.action-secondary {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text);
}

.action-secondary:hover {
  border-color: var(--concrete);
  color: var(--text);
}

/* ---------- Sign-in ---------- */
/* Sign-in rhythm: a wide break under the heading, then the two ways in
   (Google, the email form) separated by an evenly spaced divider. */
.auth {
  flex: 1;
  display: grid;
  align-content: center;
  gap: calc(var(--space) * 3);
  padding: var(--gutter);
  width: min(100%, 24rem);
  margin-inline: auto;
}

.auth-header {
  display: grid;
  gap: calc(var(--space) * 2.5);
  margin-bottom: var(--space);
}

.auth-form {
  display: grid;
  gap: calc(var(--space) * 3.5);
}

.auth-form fieldset {
  display: grid;
  margin: 0;
  padding: 0;
  border: 0;
}

/* Labels sit close to their field; fields sit apart from each other. */
.auth-form label {
  margin-bottom: calc(var(--space) * 0.75);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.auth-form input + label {
  margin-top: calc(var(--space) * 2.5);
}

/* Text fields and selects, everywhere. */
input[type="email"],
input[type="password"],
input[type="text"],
select {
  height: 2.75rem;
  padding: 0 1rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  transition: border-color var(--transition);
}

input:focus,
select:focus {
  border-color: var(--lumen);
  outline: none;
}

select {
  padding-right: 2.25rem;
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--text-muted) 50%),
    linear-gradient(-45deg, transparent 50%, var(--text-muted) 50%);
  background-position: calc(100% - 1.15rem) 50%, calc(100% - 0.85rem) 50%;
  background-size: 0.3rem 0.3rem;
  background-repeat: no-repeat;
}

.auth-form .action-primary {
  justify-self: start;
}

/* "Sign in with Google": Google's dark-theme button, pill variant. Its
   colours and type come from Google's branding guidelines, not our tokens. */
.google-signin {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 40px;
  padding: 0 12px;
  border: 1px solid #8E918F;
  border-radius: var(--radius-pill);
  background: #131314;
  color: #E3E3E3;
  font-family: "Roboto", system-ui, sans-serif;
  font-weight: 500;
  font-size: 14px;
  line-height: 20px;
  text-decoration: none;
  transition: background-color var(--transition);
}

.google-signin:hover {
  background: #1F1F21;
  color: #E3E3E3;
}

/* Divider between the two ways in: hairlines either side of the label. */
.auth-or {
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 2);
  color: var(--text-dim);
  font-size: 0.8125rem;
}

.auth-or::before,
.auth-or::after {
  content: "";
  flex: 1;
  border-top: 1px solid var(--line);
}

.form-error {
  padding: 0.75rem 1rem;
  border-left: 2px solid var(--status-critical);
  background: color-mix(in srgb, var(--status-critical) 10%, transparent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ---------- App shell ---------- */
.app {
  flex: 1;
  display: grid;
  /* Never wider than the screen, whatever a page holds. */
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "nav"
    "header"
    "main";
}

.app-nav {
  grid-area: nav;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space) calc(var(--space) * 3);
  padding: calc(var(--space) * 2) var(--gutter);
  border-bottom: 1px solid var(--line);
}

/* Narrow screens: the brand and a menu button; the rest opens below.
   A checkbox toggles it, so it needs no script. */
.nav-toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.nav-toggle-label {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-left: auto;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  cursor: pointer;
  transition: border-color var(--transition);
}

/* Three bars, drawn as one bar and its two shadows. */
.nav-toggle-label::before {
  content: "";
  width: 1rem;
  height: 2px;
  border-radius: 1px;
  background: var(--text);
  box-shadow: 0 -5px 0 var(--text), 0 5px 0 var(--text);
  transition: box-shadow var(--transition);
}

.nav-toggle:checked + .nav-toggle-label {
  border-color: var(--concrete);
}

/* Open: the bars close to one, a cue that the menu folds back up. */
.nav-toggle:checked + .nav-toggle-label::before {
  box-shadow: 0 0 0 var(--text), 0 0 0 var(--text);
}

.nav-toggle:focus-visible + .nav-toggle-label {
  outline: 2px solid var(--lumen);
  outline-offset: 3px;
}

.nav-panel {
  display: none;
  flex-basis: 100%;
  gap: calc(var(--space) * 2);
  padding-block: var(--space) calc(var(--space) * 2);
}

.nav-toggle:checked ~ .nav-panel {
  display: grid;
}

.nav-panel .nav-group {
  display: grid;
  gap: 0.25rem;
}

.nav-panel .nav-group .tag {
  display: block;
  padding-inline: 0.9rem;
}

.nav-panel .nav-items {
  flex-direction: column;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-name {
  font-size: 1.5rem;
  letter-spacing: var(--tracking-display);
}

.nav-group {
  display: contents;
}

.nav-group .tag {
  display: none;
}

.nav-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-items a {
  display: block;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  text-decoration: none;
}

.nav-items a:hover {
  color: var(--text);
  background: var(--surface);
}

.nav-items a[aria-current="page"] {
  color: var(--text);
  background: var(--surface-raised);
}

/* The mark's dot — "the building that hosts them" — marks where you are. */
.nav-items a[aria-current="page"]::after {
  content: "";
  display: inline-block;
  width: 0.4rem;
  height: 0.4rem;
  margin-left: 0.6rem;
  border-radius: 50%;
  background: var(--lumen);
  vertical-align: 0.1em;
}

.app-header {
  grid-area: header;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: calc(var(--space) * 2);
  padding: calc(var(--space) * 4) var(--gutter) calc(var(--space) * 2);
}

.profile-menu {
  position: relative;
}

.profile-menu summary {
  padding: 0.4rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-size: 0.875rem;
  cursor: pointer;
  list-style: none;
}

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

.profile-menu[open] summary {
  border-color: var(--concrete);
  color: var(--text);
}

.profile-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + var(--space));
  z-index: 10;
  min-width: 100%;
  padding: var(--space);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
}

.profile-menu-panel {
  display: grid;
  gap: 0.125rem;
}

.profile-menu-panel a,
.profile-menu-panel button {
  display: block;
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--text);
  text-align: left;
}

.profile-menu-panel a:hover,
.profile-menu-panel button:hover {
  background: var(--surface);
}

.app-main {
  container: app-main / inline-size;
  grid-area: main;
  display: grid;
  align-content: start;
  gap: calc(var(--space) * 3);
  padding: calc(var(--space) * 2) var(--gutter) calc(var(--space) * 6);
  max-width: 72rem;
}

@media (min-width: 60rem) {
  .app {
    grid-template-columns: 15rem minmax(0, 1fr);
    grid-template-rows: auto 1fr;
    grid-template-areas:
      "nav header"
      "nav main";
  }

  .app-nav {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: calc(var(--space) * 3);
    padding: calc(var(--space) * 4) calc(var(--space) * 2);
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }

  .brand {
    padding-inline: 0.9rem;
  }

  .nav-toggle-label {
    display: none;
  }

  .nav-panel,
  .nav-toggle:checked ~ .nav-panel {
    display: grid;
    align-content: start;
    gap: calc(var(--space) * 3);
    padding: 0;
  }

  .nav-group {
    display: grid;
    gap: var(--space);
  }

  .nav-group .tag {
    display: block;
    padding-inline: 0.9rem;
  }

  .nav-items {
    flex-direction: column;
  }
}

/* ---------- Panels ---------- */
.panel {
  display: grid;
  gap: calc(var(--space) * 2);
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.panel p {
  max-width: 60ch;
  color: var(--text-muted);
}

.empty-state h2 {
  color: var(--text);
}

/* The card on file: the last four digits read as a figure. */
.panel .card-on-file {
  color: var(--text);
}

.card-on-file strong {
  font-weight: var(--weight-medium);
  font-variant-numeric: tabular-nums;
}

.steps {
  display: grid;
  gap: calc(var(--space) * 1.5);
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-muted);
}

.steps li::marker {
  color: var(--lumen);
}

/* The overview's Get started guide: closed once, gone for good. */
.get-started-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: calc(var(--space) * 2);
}

.get-started-header form {
  margin: 0;
}

.close-button {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 50%;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}

.close-button:hover,
.close-button:focus-visible {
  border-color: var(--line-strong);
  color: var(--text);
}

/* An ×, drawn with two strokes. */
.close-button::before {
  content: "";
  width: 0.875rem;
  height: 0.875rem;
  background:
    linear-gradient(45deg, transparent calc(50% - 0.75px), currentColor calc(50% - 0.75px), currentColor calc(50% + 0.75px), transparent calc(50% + 0.75px)),
    linear-gradient(-45deg, transparent calc(50% - 0.75px), currentColor calc(50% - 0.75px), currentColor calc(50% + 0.75px), transparent calc(50% + 0.75px));
}

/* ---------- Headline figures (brand: "host earned $8,347") ---------- */
/* Tiles and panels in even rows: the column count divides the number of
   items at every width, so no row is ever left part-filled. */
.tiles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: calc(var(--space) * 2);
  margin: 0;
}

@container app-main (min-width: 34rem) {
  .tiles--2,
  .tiles--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@container app-main (min-width: 52rem) {
  .tiles--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@container app-main (min-width: 60rem) {
  .tiles--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.stat {
  display: grid;
  align-content: start;
  gap: var(--space);
  padding: calc(var(--space) * 3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.stat-value {
  margin: 0;
  font-size: clamp(2rem, 1.5rem + 1.5vw, 2.75rem);
  font-weight: var(--weight-light);
  letter-spacing: var(--tracking-display);
  line-height: 1;
  color: var(--lumen);
}

.stat-value--pending {
  color: var(--text-dim);
}

/* ---------- Overview charts ---------- */
/* Drawn on the server as SVG; colours and motion live here. Lumen marks
   activity, graphite and concrete the rest. */
.stat-change {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.75rem;
}

.stat-change-badge {
  margin-right: 0.25rem;
  padding: 0.1rem 0.5rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
}

.stat-change--up {
  border-color: color-mix(in srgb, var(--lumen) 55%, transparent);
  color: var(--lumen);
}

.stat-chart {
  display: grid;
  gap: 0.4rem;
  margin: 0;
}

.stat-chart svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.chart-note {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.8125rem;
}

/* The month's requests: a bar a day, today in Lumen with the mark's dot. */
.chart-day {
  fill: color-mix(in srgb, var(--concrete) 32%, var(--surface));
  transform-box: fill-box;
  transform-origin: bottom;
  animation: chart-grow 700ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.chart-day--today {
  fill: var(--lumen);
}

.chart-day--future {
  fill: var(--surface-raised);
  animation: none;
}

.chart-today {
  fill: var(--lumen);
  animation: chart-fade 400ms 600ms both;
}

/* Split bars: tokens by kind, and the month's models. */
.chart-split {
  overflow: hidden;
  height: 0.625rem;
  border-radius: var(--radius-pill);
  background: var(--surface-raised);
}

.chart-split--wide {
  height: 0.875rem;
}

.chart-split--empty {
  height: 0.875rem;
}

.chart-split svg {
  display: block;
  width: 100%;
  height: 100%;
}

.chart-segment {
  transform-box: view-box;
  transform-origin: left;
  animation: chart-sweep 900ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
  stroke: var(--surface);
  stroke-width: 0.6;
  vector-effect: non-scaling-stroke;
}

.chart-shade-1 { fill: var(--lumen); background: var(--lumen); }
.chart-shade-2 { fill: color-mix(in srgb, var(--lumen) 62%, var(--surface)); background: color-mix(in srgb, var(--lumen) 62%, var(--surface)); }
.chart-shade-3 { fill: color-mix(in srgb, var(--lumen) 36%, var(--surface)); background: color-mix(in srgb, var(--lumen) 36%, var(--surface)); }
.chart-shade-4 { fill: color-mix(in srgb, var(--concrete) 55%, var(--surface)); background: color-mix(in srgb, var(--concrete) 55%, var(--surface)); }
.chart-shade-5 { fill: color-mix(in srgb, var(--concrete) 28%, var(--surface)); background: color-mix(in srgb, var(--concrete) 28%, var(--surface)); }

/* Keys: one dot each, lit when used this week. */
.chart-key {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1.5;
}

.chart-key--lit {
  fill: var(--lumen);
  stroke: none;
  animation: chart-fade 500ms both;
}

.chart-panel {
  align-content: start;
}

.chart-grid {
  display: block;
  width: 100%;
  height: auto;
}

.chart-label {
  fill: var(--text-dim);
  font-family: var(--font-body);
  font-size: 4.5px;
  letter-spacing: 0.04em;
}

.chart-cell {
  animation: chart-fade 600ms both;
}

.chart-level-0 { fill: color-mix(in srgb, var(--concrete) 12%, var(--surface)); background: color-mix(in srgb, var(--concrete) 12%, var(--surface)); }
.chart-level-1 { fill: color-mix(in srgb, var(--lumen) 22%, var(--surface)); background: color-mix(in srgb, var(--lumen) 22%, var(--surface)); }
.chart-level-2 { fill: color-mix(in srgb, var(--lumen) 45%, var(--surface)); background: color-mix(in srgb, var(--lumen) 45%, var(--surface)); }
.chart-level-3 { fill: color-mix(in srgb, var(--lumen) 72%, var(--surface)); background: color-mix(in srgb, var(--lumen) 72%, var(--surface)); }
.chart-level-4 { fill: var(--lumen); background: var(--lumen); }

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.3rem;
}

.chart-swatch {
  display: inline-block;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 3px;
}

.chart-models {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.chart-models li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.chart-share {
  color: var(--text-dim);
}

/* The free tier: an arc that draws itself toward the month's use. */
.chart-gauge svg {
  display: block;
  width: 100%;
  max-width: 14rem;
  height: auto;
  margin-inline: auto;
}

.chart-gauge-track,
.chart-gauge-value {
  fill: none;
  stroke-width: 10;
  stroke-linecap: round;
}

.chart-gauge-track {
  stroke: var(--surface-raised);
}

.chart-gauge-value {
  stroke: var(--lumen);
  stroke-dasharray: 1;
  animation: chart-draw 1100ms 150ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.chart-gauge--exhausted .chart-gauge-value {
  stroke: var(--status-critical);
}

.chart-gauge-figure {
  margin: 0;
  color: var(--text-muted);
  text-align: center;
}

.panel .chart-gauge-figure strong {
  color: var(--lumen);
  font-size: 1.75rem;
  font-weight: var(--weight-light);
  letter-spacing: var(--tracking-display);
}

.chart-gauge--exhausted .chart-gauge-figure strong {
  color: var(--status-critical);
}

.chart-gauge .chart-note {
  text-align: center;
}

@keyframes chart-grow {
  from { transform: scaleY(0); }
}

@keyframes chart-sweep {
  from { transform: scaleX(0); }
}

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

@keyframes chart-draw {
  from { stroke-dashoffset: 1; }
  to { stroke-dashoffset: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .chart-day,
  .chart-today,
  .chart-segment,
  .chart-key--lit,
  .chart-cell,
  .chart-gauge-value {
    animation: none;
  }
}

/* ---------- Tables and facts ---------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  padding: 0 0 0.75rem;
  text-align: left;
  font-size: 0.6875rem;
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-tag);
  text-transform: uppercase;
  color: var(--text-dim);
  border-bottom: 1px solid var(--line-strong);
}

.data-table td {
  padding: 0.85rem 1rem 0.85rem 0;
  border-bottom: 1px solid var(--line);
}

.role {
  display: inline-block;
  padding: 0.1rem 0.65rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.facts {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: calc(var(--space) * 1.5) calc(var(--space) * 4);
  margin: 0;
}

.facts dt {
  color: var(--text-dim);
}

.facts dd {
  margin: 0;
}

/* ---------- Error page ---------- */
.error-page {
  flex: 1;
  display: grid;
  place-content: center;
  justify-items: start;
  gap: calc(var(--space) * 2);
  padding: var(--gutter);
  max-width: 36rem;
  margin-inline: auto;
}

.error-page p:not(.tag) {
  color: var(--text-muted);
}

/* ---------- Footer ---------- */
.site-footer {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: calc(var(--space) * 2) var(--gutter);
  border-top: 1px solid var(--line);
  color: var(--text-dim);
  font-size: 0.75rem;
}

/* ---------- Organization switcher ---------- */
.org-switcher {
  position: relative;
}

.org-switcher summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space);
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9375rem;
  cursor: pointer;
  list-style: none;
}

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

/* Chevron, drawn like the select's. */
.org-switcher summary::after {
  content: "";
  flex: none;
  width: 0.45rem;
  height: 0.45rem;
  border-right: 1.5px solid var(--text-muted);
  border-bottom: 1.5px solid var(--text-muted);
  transform: translateY(-25%) rotate(45deg);
  transition: transform var(--transition);
}

.org-switcher[open] summary::after {
  transform: translateY(25%) rotate(-135deg);
}

.org-switcher-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.org-switcher-panel {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 0.375rem);
  z-index: 20;
  display: grid;
  gap: 0.25rem;
  min-width: 14rem;
  padding: var(--space);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
}

.org-switcher-panel ul {
  display: grid;
  gap: 0.125rem;
  margin: 0;
  padding: 0 0 0.375rem;
  border-bottom: 1px solid var(--line);
  list-style: none;
}

.org-switcher-panel button,
.org-current,
.org-switcher-panel > a {
  display: block;
  width: 100%;
  padding: 0.45rem 0.75rem;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--text-muted);
  font-size: 0.875rem;
  text-align: left;
  text-decoration: none;
}

.org-current {
  color: var(--text);
}

.org-current::after {
  content: "";
  display: inline-block;
  width: 0.4rem;
  height: 0.4rem;
  margin-left: 0.6rem;
  border-radius: 50%;
  background: var(--lumen);
  vertical-align: 0.1em;
}

.org-switcher-panel button:hover,
.org-switcher-panel > a:hover {
  background: var(--surface);
  color: var(--text);
}

/* ---------- Organizations hub (no app shell) ---------- */
.hub-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: calc(var(--space) * 3) var(--gutter);
}

.hub {
  flex: 1;
  display: grid;
  align-content: start;
  gap: calc(var(--space) * 3);
  width: min(100%, 54rem);
  margin-inline: auto;
  padding: calc(var(--space) * 4) var(--gutter) calc(var(--space) * 8);
}

.hub--narrow {
  width: min(100%, 32rem);
}

/* The two ways to start: big cards, one tap each. The art is drawn in CSS:
   one Lumen disc for an individual, a cluster of three for a team. */
.choices {
  display: grid;
  gap: calc(var(--space) * 3);
}

.choice-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  gap: calc(var(--space) * 2.5);
  margin: 0;
  padding: 0;
  list-style: none;
}

.choice-list form {
  height: 100%;
}

.choice {
  --art-size: 9.5rem;
  position: relative;
  display: grid;
  grid-template-rows: 1fr auto auto;
  gap: calc(var(--space) * 0.75);
  width: 100%;
  height: 100%;
  min-height: clamp(17rem, 45vw, 26rem);
  padding: clamp(1.5rem, 4vw, 2.25rem);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 1.4);
  background:
    radial-gradient(circle at 50% 30%, color-mix(in srgb, var(--lumen) 7%, transparent), transparent 60%),
    var(--surface);
  color: var(--text);
  text-align: left;
  text-decoration: none;
  transition:
    transform var(--transition),
    border-color var(--transition),
    background-color var(--transition);
}

.choice::before {
  content: "";
  align-self: center;
  justify-self: center;
  width: calc(var(--art-size) * 1.6);
  height: var(--art-size);
  transition: transform 320ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* A single disc inside a quiet orbit. */
.choice--individual::before {
  background:
    radial-gradient(circle at 50% 50%, var(--lumen) 0 2.4rem, transparent calc(2.4rem + 1px)),
    radial-gradient(circle at 50% 50%, transparent 0 4.1rem, var(--line-strong) calc(4.1rem + 1px) 4.2rem, transparent calc(4.2rem + 1px));
}

/* Three overlapping discs, each cut out from the card behind it. */
.choice--team::before {
  background:
    radial-gradient(circle at 50% 50%, var(--lumen) 0 2.4rem, var(--surface) calc(2.4rem + 1px) 2.75rem, transparent calc(2.75rem + 1px)),
    radial-gradient(circle at 24% 50%, var(--concrete) 0 2rem, var(--surface) calc(2rem + 1px) 2.35rem, transparent calc(2.35rem + 1px)),
    radial-gradient(circle at 76% 50%, var(--surface-raised) 0 2rem, var(--line-strong) calc(2rem + 1px) calc(2rem + 2px), transparent calc(2rem + 3px));
}

/* The brand's "+" disc, outlined until the card is chosen. */
.choice::after {
  --cross-length: 0.875rem;
  --cross-weight: 0.125rem;
  content: "";
  position: absolute;
  right: clamp(1.5rem, 4vw, 2.25rem);
  bottom: clamp(1.5rem, 4vw, 2.25rem);
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background:
    linear-gradient(var(--text), var(--text)) center / var(--cross-length) var(--cross-weight) no-repeat,
    linear-gradient(var(--text), var(--text)) center / var(--cross-weight) var(--cross-length) no-repeat;
  transition: background-color var(--transition), border-color var(--transition), transform var(--transition);
}

.choice-title {
  font-size: clamp(1.75rem, 1.3rem + 1.2vw, 2.25rem);
  font-weight: var(--weight-light);
  letter-spacing: var(--tracking-display);
  line-height: 1.1;
}

.choice-line {
  padding-right: 3.5rem;
  color: var(--text-muted);
}

.choice:hover,
.choice:focus-visible {
  transform: translateY(-4px);
  border-color: var(--lumen);
  background-color: var(--surface-raised);
  color: var(--text);
}

.choice:hover::before,
.choice:focus-visible::before {
  transform: scale(1.08);
}

.choice:hover::after,
.choice:focus-visible::after {
  --text: var(--on-lumen);
  border-color: var(--lumen);
  background-color: var(--lumen);
  transform: rotate(90deg);
}

.choice:active {
  transform: translateY(-1px);
}

/* The team path's naming step. */
.back-link {
  color: var(--text-muted);
  font-size: 0.875rem;
  text-decoration: none;
}

.back-link::before {
  content: "\2190\00a0";
}

.team-form {
  display: grid;
  gap: calc(var(--space) * 1.25);
  justify-items: start;
  margin-top: calc(var(--space) * 2);
}

.team-form label {
  color: var(--text-muted);
}

.team-form input[type="text"] {
  width: 100%;
  font-size: 1.25rem;
}

.team-form-hint {
  margin-bottom: calc(var(--space) * 2);
  color: var(--text-dim);
  font-size: 0.875rem;
}

.team-join {
  margin-top: calc(var(--space) * 4);
  color: var(--text-dim);
  font-size: 0.875rem;
}

.invite-list,
.org-list {
  display: grid;
  gap: calc(var(--space) * 2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.invite-list li {
  display: grid;
  gap: var(--space);
  padding-bottom: calc(var(--space) * 2);
  border-bottom: 1px solid var(--line);
}

.invite-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.panel .invite-meta {
  color: var(--text-dim);
  font-size: 0.875rem;
}

.org-list li {
  display: flex;
  align-items: center;
  gap: var(--space);
}

/* ---------- Forms in panels ---------- */
.inline-form {
  display: grid;
  gap: calc(var(--space) * 0.75);
}

.inline-form label,
.invite-field label {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.inline-form-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: calc(var(--space) * 1.5);
}

.inline-form-row input {
  flex: 1 1 16rem;
}

.invite-form {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: calc(var(--space) * 1.5);
}

.invite-field {
  display: grid;
  gap: calc(var(--space) * 0.75);
  flex: 1 1 14rem;
}

.role-form {
  display: flex;
  align-items: center;
  gap: var(--space);
}

.role-form select {
  height: 2.25rem;
}

.row-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space);
}

.data-table .row-end {
  padding-right: 0;
  text-align: right;
}

/* Small text buttons for row-level actions. */
.action-quiet,
.link-button {
  padding: 0.35rem 0.75rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: none;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.action-quiet:hover {
  border-color: var(--line-strong);
  color: var(--text);
}

.action-quiet--danger:hover {
  border-color: color-mix(in srgb, var(--status-critical) 50%, transparent);
  color: var(--status-critical);
}

.link-button {
  padding: 0;
  color: var(--text);
  font-size: inherit;
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 0.2em;
}

.link-button:hover {
  color: var(--lumen);
}

.action-danger {
  justify-self: start;
  padding: 0.55rem 1.25rem;
  border: 1px solid color-mix(in srgb, var(--status-critical) 55%, transparent);
  border-radius: var(--radius-pill);
  background: none;
  color: var(--status-critical);
}

.action-danger:hover {
  background: color-mix(in srgb, var(--status-critical) 12%, transparent);
}

.error-page .error-detail {
  color: var(--text);
}

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

/* ---------- API keys and usage ---------- */
/* A newly minted key: shown once, so it stands out until copied. */
.minted-token {
  border-color: var(--lumen);
}

.token-value {
  width: 100%;
  padding: calc(var(--space) * 1.5) calc(var(--space) * 2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  color: var(--text);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.875rem;
}

.token-value:focus {
  outline: 2px solid var(--lumen);
  outline-offset: 2px;
}

.key-status {
  color: var(--lumen);
}

.key-status--expired {
  color: var(--text-dim);
}

.key-status--revoked {
  color: var(--status-critical);
}

/* Counts line up by place value. */
.data-table .figure {
  text-align: right;
  font-variant-numeric: tabular-nums;
}


/* ---------- Code samples on the keys page ---------- */
/* Two radio groups pick the API style and language; CSS shows the one
   matching sample. Without CSS every sample shows, each captioned. */
.code-samples {
  min-width: 0;
}

.sample-controls {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 1.5);
}

.sample-choice {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  justify-self: start;
  margin: 0;
  padding: 0.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
}

.sample-choice legend {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.sample-choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.sample-choice label {
  padding: 0.35rem 1rem;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-size: 0.875rem;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition);
}

.sample-choice label:hover {
  color: var(--text);
}

.sample-choice input:checked + label {
  background: var(--action-fill);
  color: var(--graphite);
}

.sample-choice input:focus-visible + label {
  outline: 2px solid var(--lumen);
  outline-offset: 2px;
}

.sample {
  display: grid;
  gap: var(--space);
  min-width: 0;
  margin: 0;
}

.sample figcaption {
  color: var(--text-dim);
  font-size: 0.8125rem;
}

.sample pre {
  margin: 0;
  padding: calc(var(--space) * 2.5);
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.sample pre code {
  padding: 0;
  background: none;
  color: var(--text);
}

/* Every sample sits in the same cell, so the block is always as tall as
   the longest and switching never moves the page. */
.sample-stack {
  display: grid;
}

.sample-stack > .sample {
  grid-area: 1 / 1;
  grid-template-rows: auto 1fr;
}

.code-samples:has(#sample-api-openai:checked) .sample--anthropic,
.code-samples:has(#sample-api-anthropic:checked) .sample--openai,
.code-samples:has(#sample-lang-curl:checked) :is(.sample--python, .sample--typescript),
.code-samples:has(#sample-lang-python:checked) :is(.sample--curl, .sample--typescript),
.code-samples:has(#sample-lang-typescript:checked) :is(.sample--curl, .sample--python) {
  visibility: hidden;
}

/* ---------- Free tier on the keys page ---------- */
/* The month's use as a figure, then a Lumen bar against the allowance. */
.free-tier-usage {
  color: var(--text-muted);
}

.panel .free-tier-usage strong {
  color: var(--lumen);
  font-size: 1.75rem;
  font-weight: var(--weight-light);
  letter-spacing: var(--tracking-display);
}

.free-tier meter {
  width: 100%;
  height: 0.5rem;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--surface-raised);
  appearance: none;
}

.free-tier meter::-webkit-meter-bar {
  height: 0.5rem;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--surface-raised);
}

.free-tier meter::-webkit-meter-optimum-value {
  border-radius: var(--radius-pill);
  background: var(--lumen);
}

.free-tier meter::-moz-meter-bar {
  border-radius: var(--radius-pill);
  background: var(--lumen);
}

.free-tier--exhausted {
  border-color: color-mix(in srgb, var(--status-critical) 50%, transparent);
}

.free-tier--exhausted meter::-webkit-meter-optimum-value {
  background: var(--status-critical);
}

.free-tier--exhausted meter::-moz-meter-bar {
  background: var(--status-critical);
}

/* ---------- API keys page ---------- */
/* Creating a key and the free tier share a top row of equal height; the
   keys table and the docs run full width below. Measured on the content
   area, so the sidebar's width counts. */
.keys-top {
  display: grid;
  gap: calc(var(--space) * 3);
}

.keys-top .panel {
  align-content: start;
}

@container app-main (min-width: 44rem) {
  .keys-top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  /* Alone in the row, the form fits on one line. */
  .keys-top--single .key-form {
    grid-template-columns: minmax(0, 2fr) repeat(2, minmax(0, 1fr)) auto;
  }

  .keys-top--single .key-form > * {
    grid-column: auto;
  }
}

/* Name across the top, then when it expires: the date's slot is always
   there, so choosing "On a date" never moves anything. */
.key-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: calc(var(--space) * 2);
  align-items: end;
}

.key-field {
  display: grid;
  gap: calc(var(--space) * 0.75);
  min-width: 0;
  margin: 0;
}

.key-field label {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.key-field input,
.key-field select {
  width: 100%;
  min-width: 0;
}

.key-field--name,
.key-form button {
  grid-column: 1 / -1;
}

.key-form button {
  justify-self: start;
}

.key-field--date {
  visibility: hidden;
}

.key-form:has(#key-expiry option[value="date"]:checked) .key-field--date {
  visibility: visible;
}

/* The date field: a text field in the brand's dark surface, with the
   browser's calendar button recoloured and its segments highlighted in
   Lumen as they're edited. */
input[type="date"] {
  height: 2.75rem;
  padding: 0 0.75rem 0 1rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  color-scheme: dark;
  /* Chromium's segment highlight and calendar popup follow this. */
  accent-color: var(--lumen);
  font: inherit;
  font-variant-numeric: tabular-nums;
  transition: border-color var(--transition);
}

input[type="date"]::-webkit-datetime-edit {
  padding: 0;
}

input[type="date"]::-webkit-datetime-edit-text {
  padding: 0 0.15em;
  color: var(--text-dim);
}

input[type="date"]::-webkit-datetime-edit-month-field,
input[type="date"]::-webkit-datetime-edit-day-field,
input[type="date"]::-webkit-datetime-edit-year-field {
  padding: 0.1em 0.2em;
  border-radius: 4px;
}

input[type="date"]::-webkit-datetime-edit-month-field:focus,
input[type="date"]::-webkit-datetime-edit-day-field:focus,
input[type="date"]::-webkit-datetime-edit-year-field:focus {
  background: var(--lumen);
  color: var(--on-lumen);
}

input[type="date"]::-webkit-calendar-picker-indicator {
  padding: 0.35rem;
  margin-left: 0.5rem;
  border-radius: 8px;
  opacity: 0.6;
  cursor: pointer;
  transition: opacity var(--transition), background-color var(--transition);
}

input[type="date"]::-webkit-calendar-picker-indicator:hover {
  opacity: 1;
  background-color: var(--surface-raised);
}

/* The keys table, compact enough for the main column: status under the
   name, the creator under the date, dates and actions on one line. */
.key-cell .key-name,
.key-cell .key-status,
.key-creator {
  display: block;
}

.key-cell .key-status {
  margin-top: 0.2rem;
}

.key-creator {
  max-width: 14rem;
  overflow: hidden;
  color: var(--text-dim);
  font-size: 0.8125rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.key-cell ~ td time,
.data-table th {
  white-space: nowrap;
}

.data-table .row-actions {
  flex-wrap: nowrap;
}


/* ---------- Chat ---------- */
/* The chat page fills the window above the footer: the thread scrolls,
   the composer stays. */
.chat-page .app-main {
  grid-template-rows: minmax(0, 1fr);
  align-content: stretch;
  max-width: none;
  min-height: 0;
  padding-bottom: calc(var(--space) * 4);
}

.chat {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

/* Conversations sit under Chat in the main navigation (chat pages only). */
.nav-chats {
  display: grid;
  min-width: 0;
  gap: 0.25rem;
  margin: 0.25rem 0 0 0.9rem;
  padding-left: 0.6rem;
  border-left: 1px solid var(--line);
}

.nav-items .chat-new {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  justify-self: start;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-pill);
  color: var(--text);
  font-size: 0.875rem;
}

/* The Lumen "+" disc, small, as on the brand pills. */
.nav-items .chat-new::before {
  content: "";
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background:
    linear-gradient(var(--on-lumen), var(--on-lumen)) center / 0.5rem 2px no-repeat,
    linear-gradient(var(--on-lumen), var(--on-lumen)) center / 2px 0.5rem no-repeat,
    var(--lumen);
}

.chat-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.125rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-items .chat-list a {
  overflow: hidden;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* The Chat item already carries the dot. */
.nav-items .chat-list a[aria-current="page"]::after {
  content: none;
}

/* Delete: a bin at the row's right, shown on hover or focus (always on
   touch screens). Opening it asks to confirm below the title. */
.chat-list li {
  position: relative;
}

.nav-items .chat-list li:is(:hover, :focus-within) a,
.nav-items .chat-list li:has(.chat-list-delete[open]) a {
  padding-right: 2rem;
}

.chat-list-delete summary {
  position: absolute;
  top: 0.15rem;
  right: 0.25rem;
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  cursor: pointer;
  list-style: none;
  opacity: 0;
  transition: opacity var(--transition), color var(--transition);
}

.chat-list-delete summary::-webkit-details-marker {
  display: none;
}

.chat-list-delete summary::before {
  content: "";
  width: 0.875rem;
  height: 0.875rem;
  background: currentColor;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='black' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2.5 4h11M6.5 4V2.5h3V4M4 4l.7 9.5h6.6L12 4M6.75 6.5v4.5M9.25 6.5v4.5'/%3E%3C/svg%3E") center / contain no-repeat;
}

.chat-list li:is(:hover, :focus-within) .chat-list-delete summary,
.chat-list-delete[open] summary {
  opacity: 1;
}

.chat-list-delete summary:hover,
.chat-list-delete[open] summary {
  color: var(--text);
}

@media (hover: none) {
  .chat-list-delete summary {
    opacity: 1;
  }

  .nav-items .chat-list a {
    padding-right: 2rem;
  }
}

.chat-list-delete form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin: 0.25rem 0 0.35rem;
  padding: 0.4rem 0.5rem 0.4rem 0.75rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  color: var(--text-muted);
  font-size: 0.8125rem;
}

.chat-list-delete button {
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--status-critical);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--status-critical);
  font-size: 0.8125rem;
}

.chat-list-delete button:hover {
  background: var(--status-critical);
  color: var(--graphite);
}

.chat-thread {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  gap: calc(var(--space) * 2);
  min-height: 0;
}

.chat-thread-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: calc(var(--space) * 2);
  width: min(100%, 48rem);
  margin-inline: auto;
}

.chat-thread-header h2 {
  min-width: 0;
  overflow: hidden;
  font-size: 1.125rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-delete {
  position: relative;
  flex: none;
}

.chat-delete summary {
  color: var(--text-dim);
  font-size: 0.8125rem;
  cursor: pointer;
  list-style: none;
}

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

.chat-delete summary:hover,
.chat-delete[open] summary {
  color: var(--text);
}

.chat-delete form {
  position: absolute;
  right: 0;
  top: calc(100% + var(--space));
  z-index: 10;
  display: grid;
  gap: var(--space);
  width: max-content;
  padding: calc(var(--space) * 1.5);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  font-size: 0.875rem;
}

.chat-delete button {
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--status-critical);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--status-critical);
}

.chat-delete button:hover {
  background: var(--status-critical);
  color: var(--graphite);
}

.nav-collapse {
  display: none;
}

.nav-collapse button {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  transition: border-color var(--transition);
}

.nav-collapse button:hover {
  border-color: var(--concrete);
}

.nav-collapse button::before {
  content: "";
  width: 1.1rem;
  height: 0.9rem;
  border: 1.5px solid var(--text-muted);
  border-radius: 3px;
  background: linear-gradient(var(--text-muted), var(--text-muted)) left / 0.35rem 100% no-repeat;
}

.nav-collapse button[aria-pressed="true"]::before {
  background: linear-gradient(var(--text-muted), var(--text-muted)) 0.3rem 0 / 1.5px 100% no-repeat;
}

/* Newest at the bottom, and the view stays there as answers grow. */
.chat-scroll {
  flex: 1;
  display: flex;
  flex-direction: column-reverse;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.chat-log,
.chat-composer,
.chat-blocked,
.chat-page .chat-notice {
  width: min(100%, 48rem);
  justify-self: center;
  margin-inline: auto;
}

.chat-welcome {
  display: grid;
  justify-items: center;
  gap: calc(var(--space) * 2);
  padding-block: clamp(2rem, 12vh, 8rem) calc(var(--space) * 4);
  color: var(--text-muted);
  font-size: clamp(1.25rem, 1rem + 1vw, 1.75rem);
  letter-spacing: var(--tracking-display);
}

.chat-welcome[hidden] {
  display: none;
}

.chat-messages {
  display: grid;
  gap: calc(var(--space) * 3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.chat-message--user {
  justify-self: end;
  max-width: min(36rem, 85%);
  margin-left: auto;
  padding: calc(var(--space) * 1.25) calc(var(--space) * 2);
  border-radius: var(--radius) var(--radius) 6px var(--radius);
  background: var(--surface-raised);
  overflow-wrap: anywhere;
}

.chat-message--user p {
  white-space: pre-wrap;
}

.chat-message--answer {
  display: grid;
  gap: var(--space);
}

.chat-model {
  color: var(--text-dim);
}

/* Answer prose: Markdown rendered on the server. */
.chat-answer {
  overflow-wrap: anywhere;
}

/* One rhythm between blocks, whatever they are: no block keeps its own
   margins, and each one after the first sits the same gap below. */
.chat-answer > * {
  margin-block: 0;
}

.chat-answer > * + * {
  margin-top: calc(var(--space) * 2);
}

.chat-answer > :is(h1, h2, h3, h4):not(:first-child) {
  margin-top: calc(var(--space) * 3.5);
}

.chat-answer :is(h1, h2, h3, h4) {
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-display);
}

.chat-answer h1 { font-size: 1.5rem; }
.chat-answer h2 { font-size: 1.25rem; }
.chat-answer :is(h3, h4) { font-size: 1.0625rem; }

.chat-answer strong {
  font-weight: var(--weight-medium);
}

.chat-answer ul,
.chat-answer ol {
  padding-left: 1.5rem;
}

.chat-answer li + li {
  margin-top: 0.25rem;
}

.chat-answer li > :is(ul, ol, p) {
  margin-block: 0.25rem 0;
}

.chat-answer blockquote {
  padding-left: calc(var(--space) * 2);
  border-left: 2px solid var(--line-strong);
  color: var(--text-muted);
}

.chat-answer pre {
  padding: calc(var(--space) * 2);
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-size: 0.875rem;
  line-height: 1.55;
}

.chat-answer pre code {
  padding: 0;
  background: none;
  font-size: inherit;
  white-space: pre;
}

.chat-answer table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.chat-answer :is(th, td) {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

/* The header row sits flush, so the gap above a table matches the rest. */
.chat-answer th {
  padding-top: 0;
  color: var(--text-muted);
  font-weight: var(--weight-regular);
}

.chat-answer a {
  color: var(--text);
  text-decoration-color: var(--lumen);
}

.chat-reasoning summary {
  color: var(--text-dim);
  font-size: 0.875rem;
  cursor: pointer;
}

.chat-reasoning p {
  max-height: 16rem;
  margin-top: var(--space);
  padding-left: calc(var(--space) * 2);
  overflow-y: auto;
  border-left: 2px solid var(--line);
  color: var(--text-dim);
  font-size: 0.875rem;
  white-space: pre-wrap;
}

.chat-message--pending .chat-reasoning summary,
.chat-activity {
  color: var(--text-muted);
  font-size: 0.875rem;
  animation: chat-pulse 1.6s ease-in-out infinite;
}

/* Working: the mark's Lumen dot, breathing. */
.chat-working::before {
  content: "";
  display: block;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--lumen);
  animation: chat-pulse 1.2s ease-in-out infinite;
}

@keyframes chat-pulse {
  50% { opacity: 0.35; }
}

.chat-page .chat-notice {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.chat-page .chat-notice--limit {
  color: var(--status-critical);
}

.chat-message .chat-notice {
  width: auto;
  margin: 0;
  color: var(--status-critical);
}

.chat-sources {
  display: grid;
  gap: var(--space);
  margin-top: var(--space);
  padding-top: calc(var(--space) * 1.5);
  border-top: 1px solid var(--line);
}

.chat-sources ol {
  display: grid;
  gap: 0.25rem;
  margin: 0;
  padding-left: 1.5rem;
  font-size: 0.875rem;
}

.chat-source-site {
  color: var(--text-dim);
}

/* The composer: one rounded field, options and send along its foot. */
.chat-composer {
  display: grid;
  gap: var(--space);
  padding: calc(var(--space) * 1.5) calc(var(--space) * 1.5) var(--space) calc(var(--space) * 2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color var(--transition);
}

.chat-composer:focus-within {
  border-color: var(--concrete);
}

.chat-composer textarea {
  width: 100%;
  min-height: 1.5rem;
  max-height: 14rem;
  padding: 0.25rem 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  line-height: 1.5;
  resize: none;
  field-sizing: content;
}

.chat-composer textarea:focus {
  outline: none;
}

.chat-composer textarea::placeholder {
  color: var(--text-dim);
}

.chat-options {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space);
  margin: 0;
  padding: 0;
  border: 0;
}

.chat-options select {
  flex: 0 1 auto;
  min-width: 0;
  height: 2rem;
  max-width: 14rem;
  padding-left: 0.75rem;
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
}

.chat-search-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-size: 0.8125rem;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}

.chat-search-toggle input {
  margin: 0;
  accent-color: var(--lumen);
}

.chat-search-toggle:has(input:checked) {
  border-color: var(--lumen);
  color: var(--text);
}

/* Send: a Lumen disc with an upward chevron. */
.chat-send {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  margin-left: auto;
  border: 0;
  border-radius: 50%;
  background: var(--lumen);
  transition: opacity var(--transition);
}

.chat-send::before {
  content: "";
  width: 0.6rem;
  height: 0.6rem;
  margin-top: 0.3rem;
  border-top: 2px solid var(--on-lumen);
  border-left: 2px solid var(--on-lumen);
  transform: rotate(45deg);
}

.chat-send:disabled {
  opacity: 0.35;
  cursor: default;
}

@media (min-width: 60rem) {
  body.chat-page {
    height: 100dvh;
  }

  .chat-page .app {
    min-height: 0;
  }

  .chat-page .app-header {
    padding-top: calc(var(--space) * 3);
  }

  /* The sidebar toggle: a panel glyph, its left column filled when the
     sidebar shows. Narrow screens use the menu button instead. */
  .nav-collapse {
    display: block;
  }

  .chat-page .app-header h1 {
    margin-right: auto;
  }

  .nav-collapsed .app {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "header"
      "main";
  }

  .nav-collapsed .app-nav {
    display: none;
  }

  /* Many conversations scroll inside the sidebar, not the page; long
     titles end in an ellipsis rather than widening it. */
  .chat-page .app-nav {
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto;
  }

  .nav-panel,
  .nav-panel .nav-items,
  .nav-panel .nav-items li {
    min-width: 0;
  }
}