:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-alt: #f0f1f4;
  --text: #1b1d21;
  --muted: #5c636e;
  --border: #d7dae0;
  --accent: #1f5fbf;
  --accent-text: #ffffff;
  --ok: #1a7f45;
  --ok-bg: #e4f4ea;
  --warning: #8a5a00;
  --warning-bg: #fdf1d6;
  --error: #b3261e;
  --error-bg: #fbe7e5;
  --neutral-bg: #e9ebef;
  --focus: #0b57d0;
  --bar-track: #e3e6ec;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Dark palette aligned with the browser extension (popup) for a
       consistent feel; light stays a readable complimentary palette. */
    --bg: #0f1115;
    --surface: #171a21;
    --surface-alt: #1f2530;
    --text: #e8eaf0;
    --muted: #9aa3b2;
    --border: #262b36;
    --accent: #5b9dff;
    --accent-text: #0b1220;
    --ok: #3fb96b;
    --ok-bg: rgba(63, 185, 107, 0.14);
    --warning: #e0a33c;
    --warning-bg: rgba(224, 163, 60, 0.14);
    --error: #e05b5b;
    --error-bg: rgba(224, 91, 91, 0.14);
    --neutral-bg: rgba(154, 163, 178, 0.12);
    --focus: #5b9dff;
    --bar-track: #232936;
  }
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  padding: 0 1rem 3rem;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--surface);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  z-index: 10;
}

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

.site-header,
main,
.site-footer {
  /* Wide enough for three comfortable provider cards at the 70rem breakpoint
     (3 x ~21rem + 2 gaps + page padding). */
  max-width: 80rem;
  margin: 0 auto;
}

.site-header {
  padding: 1.5rem 0 0.5rem;
}

.site-header h1 {
  margin: 0;
  font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.2rem);
}

.tagline {
  margin: 0.25rem 0 0;
  color: var(--muted);
}

main {
  display: block;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: var(--surface-alt);
  padding: 0.05em 0.3em;
  border-radius: 0.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  margin: 1rem 0;
}

h2 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
}

h3 {
  margin: 0;
  font-size: 1.05rem;
}

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

.small {
  font-size: 0.85rem;
}

.error {
  color: var(--error);
  background: var(--error-bg);
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
}

.notice {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
}

.field {
  margin: 0.75rem 0;
}

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

input[type="password"] {
  width: 100%;
  max-width: 28rem;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}

.checkbox-field {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-field label {
  margin: 0;
  font-weight: 500;
}

.checkbox-field input {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--accent);
}

button {
  font: inherit;
  padding: 0.55rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 0.5rem;
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
}

button.secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

button:disabled {
  opacity: 0.6;
  cursor: default;
}

button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.banner {
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  margin: 0.75rem 0;
  border: 1px solid var(--border);
}

.banner.tone-warning {
  color: var(--warning);
  background: var(--warning-bg);
  border-color: var(--warning);
}

.banner.tone-error {
  color: var(--error);
  background: var(--error-bg);
  border-color: var(--error);
}

.banner.tone-info {
  background: var(--surface-alt);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-start;
  justify-content: space-between;
  margin-top: 1rem;
}

.toolbar h2 {
  margin: 0;
}

.toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.phase-counts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
}

.stat {
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 0.75rem;
}

.stat .stat-label {
  color: var(--muted);
  font-size: 0.85rem;
}

.stat .stat-value {
  font-size: 1.6rem;
  font-weight: 700;
}

.providers {
  /* EXPLICIT 1-or-3 columns only: never an awkward 2-column in-between. */
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

/* Three usable cards need ~70rem of content width; below that one column. */
@media (min-width: 70rem) {
  .providers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.provider {
  min-width: 0;
  overflow-wrap: anywhere;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.625rem;
  padding: 1rem;
}

.provider-head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: space-between;
}

.provider-head h3 {
  min-width: 0;
  overflow-wrap: anywhere;
}

.facts li,
.amount-list li,
.group-title,
.window-name {
  overflow-wrap: anywhere;
}

.login-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.badge {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--neutral-bg);
}

.badge.tone-ok {
  color: var(--ok);
  background: var(--ok-bg);
}

.badge.tone-warning {
  color: var(--warning);
  background: var(--warning-bg);
}

.badge.tone-error {
  color: var(--error);
  background: var(--error-bg);
}

.flags,
.facts {
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.9rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.provider-error {
  margin: 0.75rem 0 0;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  background: var(--error-bg);
  color: var(--error);
}

.provider-error p {
  margin: 0.25rem 0 0;
  overflow-wrap: anywhere;
}

.group {
  margin-top: 0.9rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.group-title {
  margin: 0 0 0.35rem;
  font-size: 0.95rem;
}

.window {
  margin: 0.6rem 0 0;
}

.window-head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  align-items: baseline;
  justify-content: space-between;
}

.window-name {
  font-weight: 600;
}

.window-warning {
  font-size: 0.85rem;
  color: var(--warning);
}

.bar-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.35rem;
}

.bar-row progress {
  /* Native progress element restyled (no inline styles): remaining share is
     the value, tone classes recolor the fill. */
  -webkit-appearance: none;
  appearance: none;
  flex: 1 1 8rem;
  height: 0.375rem;
  border: none;
  border-radius: 0.25rem;
  overflow: hidden;
  background: var(--bar-track);
}

.bar-row progress::-webkit-progress-bar {
  background: var(--bar-track);
  border-radius: 0.25rem;
}

.bar-row progress::-webkit-progress-value {
  background: var(--accent);
  border-radius: 0.25rem;
}

.bar-row progress::-moz-progress-bar {
  background: var(--accent);
  border-radius: 0.25rem;
}

.bar-row progress.tone-warning::-webkit-progress-value {
  background: var(--warning);
}

.bar-row progress.tone-warning::-moz-progress-bar {
  background: var(--warning);
}

.bar-row progress.tone-danger::-webkit-progress-value {
  background: var(--error);
}

.bar-row progress.tone-danger::-moz-progress-bar {
  background: var(--error);
}

.bar-text {
  font-size: 0.85rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.usage-unknown {
  margin: 0.25rem 0 0;
}

/* --- compact card typography --------------------------------------------- */
.group-title,
.subsection h4 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  font-weight: 600;
}

.subsection {
  margin-top: 0.9rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.subsection h4 {
  margin: 0 0 0.35rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.amount-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.amount-list li {
  margin: 0.3rem 0;
}

/* --- settings dialog ------------------------------------------------------ */

.settings-dialog {
  width: min(42rem, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface);
  color: var(--text);
}

.settings-dialog::backdrop {
  background: rgba(0, 0, 0, 0.5);
}

.settings-header h2 {
  margin: 0 0 0.25rem;
}

.settings-header p {
  margin: 0 0 0.75rem;
}

.settings-providers {
  display: grid;
  gap: 0.75rem;
  max-height: 55vh;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.metric-fieldset {
  margin: 0;
  padding: 0.6rem 0.75rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--surface-alt);
}

.metric-fieldset legend {
  padding: 0 0.35rem;
  font-weight: 600;
}

.metric-fieldset .check {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 0.4rem 0;
  cursor: pointer;
  overflow-wrap: anywhere;
}

.metric-fieldset .check input {
  width: 1.1rem;
  height: 1.1rem;
  margin: 0.15rem 0 0;
  accent-color: var(--accent);
  flex: none;
}

.metrichint {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.settings-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1rem;
}

/* --- codex account dialog ------------------------------------------------- */

.codex-dialog {
  width: min(38rem, calc(100vw - 2rem));
}

.codex-facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.2rem 0.9rem;
}

.codex-code-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

#codex-user-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  overflow-wrap: anywhere;
}

#codex-verification-link {
  overflow-wrap: anywhere;
}

.site-footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

@media (max-width: 30rem) {
  body {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .toolbar-actions {
    width: 100%;
  }

  .toolbar-actions button {
    flex: 1 1 auto;
  }
}