:root,
html[data-theme="light"],
html[data-theme="dark"] {
  --bg: #071312;
  --surface: #0d1d1c;
  --surface-strong: #142725;
  --surface-soft: #142725;
  --ink: #f4f8f7;
  --ink-soft: #d7e1df;
  --muted: #91a7a3;
  --line: rgba(255, 255, 255, 0.09);
  --accent: #d4ff3f;
  --accent-dark: #bfe932;
  --primary-bg: #d4ff3f;
  --primary-text: #071312;
  --danger: #ff756b;
  --shadow: 0 24px 64px rgba(0, 0, 0, 0.32);
  color-scheme: dark;
}

body.onboarding-page {
  background: radial-gradient(circle at 12% -8%, rgba(31, 151, 140, 0.17), transparent 38rem), var(--bg);
}
.onboarding-header { border-color: var(--line); background: rgba(7, 19, 18, 0.9); backdrop-filter: blur(18px); }
.brand-mark { width: 36px; height: 36px; object-fit: cover; border-radius: 9px; box-shadow: none; }
.brand:hover .brand-mark { transform: none; }
.onboarding-intro h1 { color: var(--ink); letter-spacing: -0.045em; }
.onboarding-main { width: min(1280px, calc(100% - 40px)); }
.onboarding-intro { max-width: 720px; margin-bottom: 32px; }
.onboarding-intro p:last-child { max-width: 650px; color: var(--muted); }
.onboarding-layout { grid-template-columns: minmax(0, 1fr) 280px; gap: 28px; }
.form-shell { grid-column: 1; grid-row: 1; border-radius: 20px; padding: clamp(24px, 4vw, 48px); }
.plan-summary { grid-column: 2; grid-row: 1; }
.summary-sticky { border-radius: 18px; }
.plan-summary,
.form-shell,
.selected-plan-card,
.summary-note,
.auth-option,
.google-auth-panel,
.review-card,
.success-panel { border-color: var(--line); background: var(--surface); box-shadow: none; }
.summary-sticky { top: 96px; }
.selected-plan-card { background: var(--surface-strong); }
.selected-price,
.step-heading > span,
.eyebrow { color: #72cbc6; }
.stepper li.is-active span,
.stepper li.is-complete span { border-color: var(--accent); background: var(--accent); color: #071312; }
.step-progress i { background: var(--accent); }
.stepper { gap: 0; }
.stepper li { position: relative; min-width: 0; }
.stepper li:not(:last-child)::after {
  content: ""; height: 1px; flex: 1; margin: 0 10px; background: var(--line);
}
.stepper li strong { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.step-heading h2 { max-width: 620px; letter-spacing: -0.035em; }
.form-step { animation: onboarding-enter 420ms cubic-bezier(.22,1,.36,1); }
@keyframes onboarding-enter { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.auth-option.is-active { border-color: var(--accent); background: rgba(212, 255, 63, 0.07); }
.auth-option, .module-picker > label, .switch-list > label, .mode-options > label {
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms cubic-bezier(.22,1,.36,1);
}
.auth-option:hover, .module-picker > label:hover, .mode-options > label:hover { transform: translateY(-2px); border-color: rgba(212,255,63,.38); }
input,
select,
textarea { min-height: 48px; border-color: var(--line); background: #061110; color: var(--ink); }
input:focus,
select:focus,
textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(212, 255, 63, 0.08); }
.button { min-height: 48px; transition: transform 140ms cubic-bezier(0.22, 1, 0.36, 1), background-color 180ms ease, border-color 180ms ease; }
.button:active { transform: scale(0.97); }
.button.primary { background: var(--accent); color: #071312; box-shadow: 0 0 20px rgba(212, 255, 63, 0.13); }
.button.secondary { border-color: var(--line); background: var(--surface-soft); color: var(--ink); }
.email-verification-note {
  display: grid;
  gap: 4px;
  border: 1px solid rgba(212, 255, 63, 0.28);
  border-radius: 12px;
  background: rgba(212, 255, 63, 0.07);
  padding: 16px;
}
.email-verification-note strong { color: var(--accent); }
.email-verification-note span { color: var(--ink-soft); }
:focus-visible { outline: 3px solid rgba(212, 255, 63, 0.8); outline-offset: 3px; }

@media (max-width: 900px) {
  .onboarding-layout { display: flex; flex-direction: column; }
  .form-shell { order: 1; width: 100%; }
  .plan-summary { order: 2; width: 100%; }
}

@media (max-width: 680px) {
  .onboarding-main { width: min(100% - 24px, 620px); padding-top: 30px; }
  .onboarding-intro { margin-bottom: 22px; }
  .onboarding-intro h1 { font-size: clamp(2rem, 11vw, 3rem); }
  .form-shell { padding: 20px 16px; border-radius: 16px; }
  .stepper li { justify-content: center; }
  .stepper li strong { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
  .stepper li:not(:last-child)::after { margin: 0 5px; }
  .stepper li > span { width: 32px; height: 32px; flex-basis: 32px; }
  .step-progress { margin: 14px 0 24px; }
  .step-heading { margin-bottom: 20px; }
  .form-actions { position: sticky; bottom: 8px; z-index: 4; margin: 16px -8px -8px; padding: 12px 8px 8px; background: linear-gradient(transparent, var(--surface) 24%); }
  .form-actions .button { width: 100%; }
}

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