/* Design tokens: every color is a custom property, redefined
   for the dark theme, and every text color clears WCAG AA (4.5:1) on the
   surfaces it sits on, in both themes. */
:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #eef1f5;
  --text: #1b2330;
  --muted: #545e6f;
  --border: #d3d9e2;
  --accent: #2557a7;
  --accent-hover: #1d4787;
  --accent-text: #ffffff;
  --accent-soft: #e3ecfa;
  --danger: #b42318;
  --danger-soft: #fdecea;
  --success: #1c6e37;
  --success-soft: #e5f4ea;
  --focus: #2557a7;
  --shadow: 0 1px 2px rgb(16 24 40 / 6%), 0 4px 12px rgb(16 24 40 / 6%);
  --radius: 12px;
  --radius-small: 8px;
  --gutter: 16px;
  --tap: 44px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #11151b;
  --surface: #1a2029;
  --surface-2: #232b36;
  --text: #e7ecf3;
  --muted: #a3adbd;
  --border: #364152;
  --accent: #8db4ff;
  --accent-hover: #a9c6ff;
  --accent-text: #0d1726;
  --accent-soft: #1f2c42;
  --danger: #ff8a80;
  --danger-soft: #3a1f1f;
  --success: #7ad69a;
  --success-soft: #1b3325;
  --focus: #8db4ff;
  --shadow: 0 1px 2px rgb(0 0 0 / 40%), 0 4px 12px rgb(0 0 0 / 30%);
  color-scheme: dark;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.5;
  padding-bottom: env(safe-area-inset-bottom);
}

h1 {
  font-size: 1.5rem;
  line-height: 1.25;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.125rem;
  margin: 0 0 0.75rem;
}

p {
  margin: 0 0 0.75rem;
}

a {
  color: var(--accent);
}

[hidden] {
  display: none !important;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -4rem;
  z-index: 20;
  padding: 0.5rem 1rem;
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius-small);
}

.skip-link:focus {
  top: 0.5rem;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 0.875rem;
}

/* --- header ------------------------------------------------------------------ */

/* Three columns: the brand, the menu in the middle, the tools at the end.
   Explicit columns, so the menu leaving the flow on phones (fixed at the
   bottom) does not pull the tools into the middle. */
.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.5rem;
  padding: calc(0.5rem + env(safe-area-inset-top)) var(--gutter) 0.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.header-start {
  grid-column: 1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  white-space: nowrap;
}

.brand-logo {
  display: inline-flex;
}

.version {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  min-height: 32px;
  padding: 0 0.5rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.75rem;
  cursor: pointer;
}

.version svg {
  width: 14px;
  height: 14px;
}

.app-nav {
  grid-column: 2;
  display: flex;
  gap: 0.25rem;
}

.app-nav button {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  min-height: var(--tap);
  padding: 0 0.75rem;
  border: 0;
  border-radius: var(--radius-small);
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.app-nav button:hover {
  color: var(--text);
  background: var(--surface-2);
}

.app-nav button[aria-current="page"] {
  color: var(--accent);
  background: var(--accent-soft);
}

.header-tools {
  grid-column: 3;
  justify-self: end;
  display: flex;
  gap: 0.25rem;
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--tap);
  height: var(--tap);
  border: 0;
  border-radius: var(--radius-small);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.icon-button:hover {
  color: var(--text);
  background: var(--surface-2);
}

.icon-button[aria-current="page"] {
  color: var(--accent);
  background: var(--accent-soft);
}

/* A view's heading takes focus when the view opens, so a screen reader
   announces it; it is not a control, so it shows no focus ring. */
h1[tabindex="-1"]:focus {
  outline: none;
}

:root[data-theme="dark"] .icon-when-light,
:root[data-theme="light"] .icon-when-dark {
  display: none;
}

/* --- layout ------------------------------------------------------------------ */

.shell {
  width: 100%;
  max-width: 60rem;
  margin: 0 auto;
  padding: 1.5rem var(--gutter) 3rem;
}

.shell:focus {
  outline: none;
}

.narrow {
  max-width: 32rem;
  margin: 0 auto;
}

.view-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-bottom: 1rem;
}

.view-head h1 {
  margin: 0;
}

.view-head p {
  margin: 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.status {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-small);
  background: var(--accent-soft);
  color: var(--text);
  border: 1px solid var(--border);
}

.status[data-kind="error"] {
  background: var(--danger-soft);
  border-color: var(--danger);
}

.status[data-kind="success"] {
  background: var(--success-soft);
  border-color: var(--success);
}

.notice {
  margin: 1rem 0 0;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-small);
  background: var(--success-soft);
}

.empty {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

/* --- forms ------------------------------------------------------------------- */

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

input[type="email"],
input[type="text"],
input[type="search"],
input[type="number"],
input[type="password"],
input[type="url"],
#modal select,
#llm-routing-form select,
#company-sector {
  display: block;
  width: 100%;
  min-height: var(--tap);
  padding: 0.5rem 0.75rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface);
  color: var(--text);
  /* 16px at least, or iOS zooms the page on focus. */
  font: inherit;
  font-size: max(1rem, 16px);
}

input::placeholder {
  color: var(--muted);
  opacity: 1;
}

.check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 400;
  min-height: var(--tap);
  margin: 0;
}

.check input {
  width: 1.25rem;
  height: 1.25rem;
  accent-color: var(--accent);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: var(--tap);
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.button:hover {
  background: var(--surface-2);
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-text);
}

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

.button.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: var(--bg);
}

.button.quiet {
  border-color: transparent;
  background: transparent;
  color: var(--muted);
}

.button.quiet:hover {
  color: var(--text);
  background: var(--surface-2);
}

.button.quiet.danger-text:hover {
  color: var(--danger);
  background: var(--danger-soft);
}

.button.small {
  min-height: 36px;
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
}

.button:disabled,
.button[aria-busy="true"] {
  opacity: 0.6;
  cursor: progress;
}

.toolbar {
  margin-bottom: 0.5rem;
}

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

.search-field > span {
  position: absolute;
  left: 0.75rem;
  top: calc(var(--tap) / 2);
  transform: translateY(-50%);
  display: inline-flex;
  color: var(--muted);
}

.search-field input {
  padding-left: 2.5rem;
}


.chip {
  display: inline-block;
  padding: 0 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.chip.status-completed {
  background: var(--success-soft);
  border-color: var(--success);
}

.chip.status-failed,
.chip.status-no_text {
  background: var(--danger-soft);
  border-color: var(--danger);
}

.chip.status-pending,
.chip.status-processing {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.notice.warning {
  background: var(--accent-soft);
}

.notice.error {
  background: var(--danger-soft);
}

.tabs {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.tabs button {
  min-height: var(--tap);
  padding: 0 1rem;
  border: 0;
  border-bottom: 3px solid transparent;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.tabs button[aria-selected="true"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* A step not reachable yet: the models tab before the endpoint answered. */
.tabs button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.connection-list {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.connection {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
}

.connection-body {
  min-width: 0;
  flex: 1;
}

.connection-body p {
  margin: 0 0 0.25rem;
  overflow-wrap: anywhere;
}

.connection-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

/* The light: its state is also said in words beside it and in its label. */
.light {
  flex: none;
  width: 0.9rem;
  height: 0.9rem;
  margin-top: 0.3rem;
  border-radius: 50%;
  background: var(--border);
  box-shadow: 0 0 0 2px var(--surface), 0 0 0 3px var(--border);
}

.light.is-up {
  background: var(--success);
  box-shadow: 0 0 0 2px var(--surface), 0 0 0 3px var(--success), 0 0 8px var(--success);
}

.light.is-down {
  background: var(--danger);
  box-shadow: 0 0 0 2px var(--surface), 0 0 0 3px var(--danger);
}

.light.is-checking {
  animation: light-pulse 1s ease-in-out infinite alternate;
}

@keyframes light-pulse {
  from { opacity: 0.4; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .light.is-checking {
    animation: none;
  }
}

/* --- modal ------------------------------------------------------------------- */

/* A fixed frame: the dialog never resizes with its content,
   which scrolls inside it; it fits a phone and 200% text zoom. */
.modal {
  width: min(32rem, calc(100vw - 2 * var(--gutter)));
  height: min(30rem, calc(100dvh - 2 * var(--gutter)));
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}

.modal.is-tall {
  height: min(40rem, calc(100dvh - 2 * var(--gutter)));
}

.modal::backdrop {
  background: rgb(10 14 20 / 55%);
}

.modal-frame {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.modal-frame h2 {
  margin: 0;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1.25rem;
}

.modal-error {
  margin: 0 1.25rem 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-small);
  background: var(--danger-soft);
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
}

/* --- small screens ------------------------------------------------------------ */

@media (max-width: 40rem) {
  .brand-name {
    display: none;
  }

  /* The version shrinks to its tag; a tap shows the number. */
  .version[aria-expanded="false"] .version-text {
    display: none;
  }

  .app-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10;
    justify-content: space-around;
    margin: 0;
    padding: 0.25rem 0.5rem calc(0.25rem + env(safe-area-inset-bottom));
    background: var(--surface);
    border-top: 1px solid var(--border);
  }

  .app-nav button {
    flex: 1;
    flex-direction: column;
    gap: 0;
    font-size: 0.75rem;
    padding: 0.25rem;
  }

  body:has(.app-nav:not([hidden])) .shell {
    padding-bottom: calc(5rem + env(safe-area-inset-bottom));
  }

  .modal-actions .button {
    flex: 1;
  }

}

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

/* --- the stock market's views ------------------------------------------------- */

.is-up {
  color: var(--success);
}

.is-down {
  color: var(--danger);
}

.chip.is-up {
  background: var(--success-soft);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 0.75rem;
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.stat-label,
.stat-detail {
  font-size: 0.875rem;
  color: var(--muted);
}

.stat-detail.is-up {
  color: var(--success);
}

.stat-detail.is-down {
  color: var(--danger);
}

.stat-value {
  font-size: 1.375rem;
  font-variant-numeric: tabular-nums;
}

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

.chart-base {
  stroke: var(--muted);
  stroke-dasharray: 4 4;
  stroke-width: 1;
}

.chart-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.5;
  stroke-linejoin: round;
}

.chart-line.is-up {
  stroke: var(--success);
}

.chart-line.is-down {
  stroke: var(--danger);
}

.chart-dot {
  fill: var(--surface);
  stroke: var(--text);
  stroke-width: 1.5;
}

.chart-label {
  fill: var(--muted);
  font-size: 12px;
}

.chart-label.end {
  text-anchor: end;
}

.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.data-table th,
.data-table td {
  padding: 0.5rem 0.625rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.data-table thead th {
  font-size: 0.875rem;
  color: var(--muted);
  font-weight: 600;
}

.data-table .number {
  text-align: right;
  white-space: nowrap;
}

.universe-list,
.company-list,
.run-list,
.step-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.company {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0;
  border-bottom: 1px solid var(--border);
}

.company:last-child {
  border-bottom: 0;
}

.company-body {
  flex: 1;
  min-width: 0;
}

.company-body p {
  margin: 0;
}

.price {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.company-list {
  max-height: 28rem;
  overflow-y: auto;
}


#company-search {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
}

.mcp-legend {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0;
  display: grid;
  gap: 0.375rem;
}

.server-badge {
  display: inline-block;
  min-width: 4.5rem;
  padding: 0.0625rem 0.5rem;
  margin-right: 0.375rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  text-align: center;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}

.server-badge[data-server="sp500"] {
  background: var(--accent-soft);
}

.server-badge[data-server="quotes"] {
  background: var(--success-soft);
}

.server-badge[data-server="broker"] {
  background: var(--danger-soft);
}

.run-list li + li {
  margin-top: 0.5rem;
}

.run-open {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 0.75rem;
  width: 100%;
  min-height: var(--tap);
  padding: 0.75rem 1rem;
  text-align: left;
  font: inherit;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  cursor: pointer;
}

.run-open:hover {
  border-color: var(--accent);
}

.run-open .muted {
  grid-column: 2;
}

.run-summary {
  grid-column: 1 / -1;
  white-space: pre-wrap;
}

.run-completed {
  background: var(--success-soft);
  color: var(--success);
}

.run-failed,
.run-exhausted {
  background: var(--danger-soft);
  color: var(--danger);
}

.run-running {
  background: var(--accent-soft);
  color: var(--accent);
}

.side-buy {
  background: var(--success-soft);
  color: var(--success);
}

.side-sell {
  background: var(--danger-soft);
  color: var(--danger);
}

.step {
  margin: 0 0 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--border);
  border-radius: var(--radius-small);
}

.step-model {
  border-left-color: var(--accent);
}

.step-thinking {
  border-left-color: var(--muted);
  background: var(--surface-2);
}

.step-tool.is-error {
  border-left-color: var(--danger);
}

.step-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  font-weight: 600;
}

.step-text {
  margin: 0.25rem 0 0;
  white-space: pre-wrap;
}

.step details,
.tool {
  margin-top: 0.375rem;
}

.step summary,
.tool summary {
  cursor: pointer;
  min-height: var(--tap);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--muted);
}

.code {
  margin: 0.375rem 0 0;
  padding: 0.625rem;
  max-height: 24rem;
  overflow: auto;
  font-size: 0.8125rem;
  background: var(--surface-2);
  border-radius: var(--radius-small);
  white-space: pre-wrap;
  word-break: break-word;
}

.server + .server {
  margin-top: 1rem;
}

.server h3 {
  font-size: 1rem;
  margin: 0 0 0.25rem;
  word-break: break-all;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.875em;
}