:root {
  color-scheme: light;
  --ink: #1c1c1c;
  --muted: #6b6b6b;
  --line: #e2e2e2;
  --bg: #f4f4f2;
  --card: #ffffff;
  --accent: #c8102e;
  --accent-dark: #8f0b21;
  --success: #1f7a3f;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
}

img { max-width: 100%; }
[hidden] { display: none !important; }

.site-header {
  background: var(--ink);
  color: #fff;
  padding: 14px 16px calc(14px + env(safe-area-inset-top, 0px));
}
.header-inner { max-width: 560px; margin: 0 auto; }
.brand-mark {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 4px;
}
.site-header h1 {
  margin: 0;
  font-size: 19px;
  line-height: 1.3;
}

main {
  max-width: 560px;
  margin: 0 auto;
  padding: 16px;
  padding-bottom: 48px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 16px;
  margin-bottom: 16px;
}
.card h2 {
  margin: 0 0 14px;
  font-size: 17px;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 8px;
}

.field { margin-bottom: 16px; }
.field:last-child { margin-bottom: 0; }
.field label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
}
.req { color: var(--accent); }

input[type="text"], select {
  width: 100%;
  padding: 12px 12px;
  font-size: 16px;
  border: 1px solid #bdbdbd;
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  appearance: none;
}
select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23555'><path d='M5.5 7.5l4.5 5 4.5-5z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 18px;
  padding-right: 34px;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.15);
}
input:invalid:not(:placeholder-shown), select:invalid { border-color: #bdbdbd; }
.field.invalid input, .field.invalid select { border-color: var(--accent); }

.vehicle-block {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.vehicle-block:last-child { border-bottom: none; padding-bottom: 0; }
.vehicle-block.highlight { position: relative; }

.vehicle-photo {
  flex: 0 0 96px;
  width: 96px;
  height: 60px;
  position: relative;
}
.vehicle-photo svg {
  width: 100%;
  height: 100%;
  fill: #3a3a3a;
}
.vehicle-block.highlight .vehicle-photo svg { fill: #2e3d29; }
.vehicle-photo .badge {
  position: absolute;
  top: -6px;
  right: -6px;
  background: var(--accent);
  color: #fff;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 2px 6px;
  border-radius: 999px;
}

.vehicle-info h3 { margin: 0 0 2px; font-size: 15px; }
.vehicle-info .model-name { margin: 0 0 6px; font-size: 13px; color: var(--muted); }
.vehicle-info .price {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--accent-dark);
}
.vehicle-info .price span {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--muted);
}
.feature-list {
  margin: 6px 0 0;
  padding-left: 18px;
  font-size: 13px;
}
.feature-list li { margin-bottom: 2px; }

.radio-field .radio-question { font-weight: 600; font-size: 14px; margin: 0 0 10px; }
.radio-options { display: flex; gap: 10px; }
.radio-pill {
  flex: 1;
  text-align: center;
  border: 1px solid #bdbdbd;
  border-radius: 8px;
  padding: 12px 8px;
  font-weight: 600;
  cursor: pointer;
  position: relative;
}
.radio-pill input {
  position: absolute;
  opacity: 0;
  inset: 0;
  margin: 0;
  cursor: pointer;
}
.radio-pill:has(input:checked) {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.radio-pill:has(input:focus-visible) {
  box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.25);
}

.form-error {
  background: #fdecec;
  border: 1px solid var(--accent);
  color: var(--accent-dark);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  margin-bottom: 12px;
}

.submit-btn {
  display: block;
  width: 100%;
  padding: 15px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 10px;
  cursor: pointer;
}
.submit-btn:active { background: var(--accent-dark); }

.thank-you { text-align: center; border-color: var(--success); }
.thank-you h2 { border-bottom-color: var(--success); color: var(--success); }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #f0f0f0;
    --muted: #a8a8a8;
    --line: #3a3a3a;
    --bg: #161616;
    --card: #202020;
  }
  :root:not([data-theme="light"]) input[type="text"],
  :root:not([data-theme="light"]) select {
    background-color: #2a2a2a;
    border-color: #4a4a4a;
    color: #f0f0f0;
  }
  :root:not([data-theme="light"]) .radio-pill { border-color: #4a4a4a; }
  :root:not([data-theme="light"]) .form-error { background: #3a1f1f; }
}
:root[data-theme="dark"] {
  --ink: #f0f0f0;
  --muted: #a8a8a8;
  --line: #3a3a3a;
  --bg: #161616;
  --card: #202020;
}
:root[data-theme="dark"] input[type="text"],
:root[data-theme="dark"] select {
  background-color: #2a2a2a;
  border-color: #4a4a4a;
  color: #f0f0f0;
}
:root[data-theme="dark"] .radio-pill { border-color: #4a4a4a; }
:root[data-theme="dark"] .form-error { background: #3a1f1f; }