:root {
  /* From mobile/lib/theme/app_theme.dart (light) */
  --page-bg: #f8fafc;
  --card-bg: #ffffff;
  --surface: #f1f5f9;
  --border: #ebeff5;
  --text-primary: #1e293b;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-faint: #94a3b8;
  --primary: #2563eb;
  --primary-deep: #1d4ed8;
  --primary-deeper: #1e40af;
  --secondary: #f48431;
  --error: #e11d48;
  --radius: 16px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

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

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font);
  color: var(--text-primary);
  background: var(--page-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.shell {
  position: relative;
  z-index: 2;
  width: min(560px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 64px;
}

.brand-block {
  margin-bottom: 22px;
  text-align: center;
}

.brand-block h1 {
  margin: 0;
  font-weight: 700;
  font-size: clamp(1.35rem, 4.5vw, 1.65rem);
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-block h1 span {
  color: var(--primary);
}

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
  box-shadow: var(--shadow);
  padding: 22px 22px 24px;
}

.steps {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.step {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-faint);
  font-weight: 500;
}

.step span {
  width: 22px;
  height: 22px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
}

.step.is-active {
  color: var(--text-secondary);
}

.step.is-active span {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.step.is-done {
  color: var(--primary);
}

.step.is-done span {
  background: #dbeafe;
  border-color: var(--primary);
  color: var(--primary);
}

.form {
  display: grid;
  gap: 14px;
}

.form[hidden],
.done[hidden],
.alert[hidden] {
  display: none !important;
}

.field {
  display: grid;
  gap: 7px;
}

.field span {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.field input {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  border-radius: 12px;
  padding: 14px 15px;
  font: inherit;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input::placeholder {
  color: var(--text-faint);
}

.field input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  background: var(--card-bg);
}

.hint {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.actions {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 10px;
}

.btn {
  appearance: none;
  border: 0;
  border-radius: 12px;
  padding: 14px 16px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: transform 0.12s ease, filter 0.12s ease, background 0.12s ease;
}

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

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-deep), var(--primary-deeper));
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  filter: brightness(1.05);
}

.btn-danger {
  background: var(--error);
  color: #fff;
}

.btn-danger:hover:not(:disabled) {
  filter: brightness(1.05);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.linkish {
  appearance: none;
  border: 0;
  background: none;
  color: var(--primary);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 0;
  text-align: left;
}

.alert {
  margin: 0 0 14px;
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 0.92rem;
  border: 1px solid transparent;
}

.alert.error {
  background: #fff1f2;
  border-color: #fecdd3;
  color: var(--error);
}

.alert.ok {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: var(--primary-deeper);
}

.done {
  text-align: center;
  padding: 12px 4px 4px;
}

.done-mark {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  background: var(--primary);
  animation: pop 0.45s ease both;
}

.done h2 {
  margin: 0 0 8px;
  font-size: 1.35rem;
  color: var(--text-primary);
}

.done p {
  margin: 0 0 20px;
  color: var(--text-muted);
}

.foot {
  margin-top: 22px;
  color: var(--text-muted);
  font-size: 0.86rem;
}

.foot .muted {
  color: var(--text-faint);
}

@keyframes pop {
  from {
    opacity: 0;
    transform: scale(0.7);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 480px) {
  .shell {
    padding-top: 36px;
  }

  .steps {
    font-size: 0.72rem;
  }

  .step {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .actions {
    grid-template-columns: 1fr;
  }
}