:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --soft: #eef4ff;
  --danger: #dc2626;
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, #dbeafe 0, transparent 34%),
    radial-gradient(circle at top right, #fef3c7 0, transparent 28%),
    var(--bg);
  color: var(--text);
}

.app-shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0;
}

.hero {
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 6vw, 4rem);
  letter-spacing: -0.06em;
}

h2 {
  margin: 0 0 18px;
  font-size: 1.5rem;
}

h3 {
  margin: 0 0 10px;
}

.hero-description {
  max-width: 560px;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.card {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
  margin-bottom: 18px;
  backdrop-filter: blur(12px);
}

.hidden {
  display: none;
}

label {
  display: block;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  margin-top: 8px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px 15px;
  font: inherit;
  color: var(--text);
  background: #fff;
}

textarea {
  resize: vertical;
}

button {
  width: 100%;
  border: 0;
  border-radius: 18px;
  padding: 15px 18px;
  background: var(--primary);
  color: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

button:hover {
  background: var(--primary-dark);
}

button.secondary {
  width: auto;
  background: var(--soft);
  color: var(--primary);
  padding: 10px 14px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 12px;
}

.message {
  min-height: 24px;
  color: var(--muted);
  font-weight: 700;
}

.message.error {
  color: var(--danger);
}

.feedback-box {
  background: var(--soft);
  border-radius: 20px;
  padding: 18px;
  margin-top: 16px;
}

.feedback-box p {
  margin: 0;
  line-height: 1.7;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.summary-grid article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px;
}

.summary-grid span {
  display: block;
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary);
}

.summary-grid p {
  margin: 4px 0 0;
  color: var(--muted);
  font-weight: 700;
}

.flow-item {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid rgba(37, 99, 235, 0.14);
  padding: 8px 0;
}

.flow-item:last-child {
  border-bottom: 0;
}

@media (max-width: 640px) {
  .app-shell {
    width: min(100% - 24px, 920px);
    padding: 24px 0;
  }

  .card {
    padding: 20px;
    border-radius: 20px;
  }

  .section-header {
    flex-direction: column;
  }

  button.secondary {
    width: 100%;
  }
}