:root {
  color-scheme: dark;
  --bg: #0c0f16;
  --card: #12161f;
  --text: #f2f0e8;
  --muted: #a8a596;
  --primary: #c9a227;
  --primary-2: #e0c25e;
  --border: #2a2c33;
  --bad: #f87171;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Georgia, 'Times New Roman', serif;
  background: radial-gradient(circle at top, #171c2b 0%, var(--bg) 45%);
  color: var(--text);
  min-height: 100vh;
}

.app {
  max-width: 640px;
  margin: 0 auto;
  padding: 40px 16px 64px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  margin-bottom: 20px;
}

.hidden {
  display: none !important;
}

.visible {
  display: block;
}

.cover-card {
  text-align: center;
}

.cover-image {
  max-width: 220px;
  width: 100%;
  border-radius: 6px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
  margin-bottom: 20px;
}

.eyebrow {
  color: var(--primary-2);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0 0 6px;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
}

h1 {
  margin: 0 0 4px;
  font-size: 1.8rem;
}

.subtitle {
  color: var(--primary-2);
  font-weight: 600;
  margin: 0 0 16px;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
}

.lead {
  color: var(--muted);
  line-height: 1.65;
  text-align: left;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  font-size: 0.95rem;
}

.small-muted {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.5;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
}

.feature-list {
  color: var(--muted);
  line-height: 1.65;
  text-align: left;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  font-size: 0.95rem;
  margin: 0 0 12px;
  padding-left: 20px;
}

.feature-list li {
  margin-bottom: 6px;
}

.feature-list li::marker {
  color: var(--primary-2);
}

.price-tag {
  display: inline-block;
  color: #14110a;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  font-weight: 700;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  padding: 8px 16px;
  border-radius: 999px;
  margin: 4px 0 16px;
}

.hint-text {
  color: var(--muted);
  font-size: 0.8rem;
  margin: 6px 0 0;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
}

.disclaimer {
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.field {
  margin-bottom: 22px;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
}

.field > label {
  display: block;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.4;
}

input[type='text'],
input[type='tel'],
input[type='email'] {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 12px;
  background: #05070c;
  color: var(--text);
  font-size: 1rem;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
}

input:focus {
  outline: none;
  border-color: var(--primary);
}

.checkbox-group {
  display: grid;
  gap: 10px;
}

.option-row {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  background: #171a24;
  border-radius: 12px;
  padding: 12px 14px;
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease;
}

.option-row:hover {
  border-color: var(--primary-2);
}

.option-row input {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  flex-shrink: 0;
}

.option-row:has(input:checked) {
  border-color: var(--primary);
  background: #26210f;
}

.error-text {
  color: var(--bad);
  font-size: 0.85rem;
  margin: 8px 0 0;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
}

.error-text:empty {
  display: none;
}

.btn {
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 14px 20px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  color: inherit;
  width: 100%;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #14110a;
}

.submit-btn {
  margin-top: 12px;
}

@media (max-width: 640px) {
  .card {
    padding: 20px;
  }
}