:root {
  color-scheme: light;
  --ui-font-sans: "Segoe UI Variable Text", "Segoe UI Variable", "Segoe UI",
    "Helvetica Neue", Arial, sans-serif;
  --ui-font-mono: "Cascadia Mono", "SFMono-Regular", Consolas,
    "Liberation Mono", monospace;
  --ui-page-bg: #f6f6f3;
  --ui-surface: #ffffff;
  --ui-surface-muted: #fbfbf8;
  --ui-surface-strong: #ffffff;
  --ui-surface-contrast: #f1f3ef;
  --ui-border: #d9dcd6;
  --ui-border-strong: #c5c9c2;
  --ui-text: #111317;
  --ui-muted: #636a75;
  --ui-accent: #2f5e89;
  --ui-accent-strong: #244a6c;
  --ui-accent-soft: #edf3f7;
  --ui-accent-contrast: #ffffff;
  --ui-success: #2f6b4f;
  --ui-success-bg: #eaf5ee;
  --ui-success-border: #c7e0d0;
  --ui-warning: #8a6427;
  --ui-warning-bg: #faf2e3;
  --ui-warning-border: #ecdab9;
  --ui-danger: #9a4343;
  --ui-danger-bg: #f9ecec;
  --ui-danger-border: #ebcaca;
  --ui-shadow-sm: 0 8px 22px rgba(17, 19, 23, 0.06);
  --ui-shadow-lg: 0 18px 40px rgba(17, 19, 23, 0.1);
  --ui-radius-sm: 12px;
  --ui-radius-md: 16px;
  --ui-radius-lg: 20px;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --ui-page-bg: #111317;
  --ui-surface: #171a1f;
  --ui-surface-muted: #1d2127;
  --ui-surface-strong: #171a1f;
  --ui-surface-contrast: #232931;
  --ui-border: #313843;
  --ui-border-strong: #434b57;
  --ui-text: #f3f5f7;
  --ui-muted: #a2a9b3;
  --ui-accent: #8fb6d8;
  --ui-accent-strong: #a5c5e0;
  --ui-accent-soft: rgba(143, 182, 216, 0.14);
  --ui-accent-contrast: #111317;
  --ui-success: #9fd0b3;
  --ui-success-bg: #1d2b23;
  --ui-success-border: #345440;
  --ui-warning: #e2c086;
  --ui-warning-bg: #2b2418;
  --ui-warning-border: #5b4a2c;
  --ui-danger: #f0b4b4;
  --ui-danger-bg: #2f1f1f;
  --ui-danger-border: #603636;
  --ui-shadow-sm: 0 10px 26px rgba(0, 0, 0, 0.18);
  --ui-shadow-lg: 0 18px 40px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body.app-page {
  margin: 0;
  background: var(--ui-page-bg);
  color: var(--ui-text);
  font: 400 15px/1.4667 var(--ui-font-sans);
}

.page-shell {
  width: min(1120px, calc(100vw - 48px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.surface {
  padding: 24px;
  background: var(--ui-surface);
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius-lg);
  box-shadow: var(--ui-shadow-sm);
}

.surface--muted {
  background: var(--ui-surface-muted);
}

.surface--elevated {
  box-shadow: var(--ui-shadow-lg);
}

.eyebrow,
.section-eyebrow,
.panel-label {
  margin: 0;
  color: var(--ui-muted);
  font-family: var(--ui-font-mono);
  font-size: 12px;
  line-height: 16px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
legend {
  margin: 0;
  color: var(--ui-text);
}

h1 {
  font-size: 34px;
  line-height: 40px;
  font-weight: 600;
  letter-spacing: -0.03em;
}

h2 {
  font-size: 24px;
  line-height: 30px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 18px;
  line-height: 24px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

p,
li,
code,
strong {
  color: inherit;
}

.lede,
.subtle,
.muted,
.field-hint,
.status-copy,
.info-copy {
  color: var(--ui-muted);
}

.lede {
  max-width: 54ch;
  margin: 0;
}

ul {
  margin: 14px 0 0;
  padding-left: 20px;
}

li + li {
  margin-top: 8px;
}

code {
  padding: 1px 6px;
  background: var(--ui-surface-muted);
  border-radius: 999px;
  font-family: var(--ui-font-mono);
  font-size: 13px;
}

.field-control,
button {
  font: inherit;
}

.field-control {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--ui-radius-sm);
  background: var(--ui-surface-strong);
  color: var(--ui-text);
  transition:
    border-color 140ms ease-out,
    box-shadow 140ms ease-out,
    background 140ms ease-out;
}

.field-control:hover {
  border-color: color-mix(in srgb, var(--ui-accent) 18%, var(--ui-border-strong));
}

.field-control::placeholder {
  color: var(--ui-muted);
}

.field-control:focus-visible,
.button:focus-visible {
  outline: 2px solid var(--ui-accent);
  outline-offset: 2px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--ui-radius-sm);
  background: var(--ui-surface-strong);
  color: var(--ui-text);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 140ms ease-out,
    background 140ms ease-out,
    border-color 140ms ease-out,
    box-shadow 140ms ease-out,
    color 140ms ease-out,
    opacity 140ms ease-out;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: var(--ui-shadow-sm);
}

.button:active {
  transform: translateY(1px);
  box-shadow: none;
}

.button:disabled {
  cursor: default;
  opacity: 0.56;
  transform: none;
  box-shadow: none;
}

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

.button--primary:hover {
  background: var(--ui-accent-strong);
  border-color: var(--ui-accent-strong);
}

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

.button--secondary:hover {
  background: var(--ui-surface-muted);
  border-color: color-mix(in srgb, var(--ui-accent) 24%, var(--ui-border-strong));
}

.button--ghost {
  background: transparent;
}

.button--icon {
  width: 32px;
  min-width: 32px;
  padding: 0;
  font-size: 18px;
  line-height: 1;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 28px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--ui-border);
  background: var(--ui-surface);
  color: var(--ui-muted);
  font-family: var(--ui-font-mono);
  font-size: 12px;
  line-height: 16px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.badge--success {
  background: var(--ui-success-bg);
  border-color: var(--ui-success-border);
  color: var(--ui-success);
}

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

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

.notice {
  margin: 0;
  min-height: 24px;
  padding: 12px 14px;
  border: 1px solid var(--ui-border);
  border-radius: 14px;
  background: var(--ui-surface-muted);
  color: var(--ui-muted);
}

.notice--info {
  background: color-mix(in srgb, var(--ui-accent-soft) 80%, var(--ui-surface));
  border-color: color-mix(in srgb, var(--ui-accent) 20%, var(--ui-border));
  color: var(--ui-accent-strong);
}

.notice--success {
  background: var(--ui-success-bg);
  border-color: var(--ui-success-border);
  color: var(--ui-success);
}

.notice--warning {
  background: var(--ui-warning-bg);
  border-color: var(--ui-warning-border);
  color: var(--ui-warning);
}

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

.preview-pill {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--ui-border);
  border-radius: 14px;
  background: var(--ui-surface);
  color: var(--ui-text);
  font-weight: 500;
}

.inline-link {
  color: var(--ui-accent);
  font-weight: 500;
  text-decoration-color: currentColor;
  text-underline-offset: 2px;
}

.inline-link:hover {
  text-decoration-thickness: 2px;
}

@media (max-width: 960px) {
  .page-shell {
    width: min(100vw - 32px, 1120px);
    padding-top: 28px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100vw - 24px, 1120px);
    padding-top: 24px;
    padding-bottom: 40px;
  }
}