:root {
  color-scheme: light;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f7f7fb;
  color: #1f2937;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(59, 130, 246, 0.12), transparent 32%),
    linear-gradient(180deg, #ffffff 0%, #f7f7fb 100%);
}

.app-shell {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 56px;
}

.hero {
  text-align: center;
  margin-bottom: 32px;
}

.eyebrow {
  margin: 0 0 10px;
  color: #2563eb;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
}

.description {
  margin: 16px auto 0;
  max-width: 680px;
  color: #4b5563;
  line-height: 1.8;
}

.card-group-section {
  margin-bottom: 32px;
}

.card-group-section h2 {
  margin: 0 0 16px;
  font-size: 1.15rem;
}

.card-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.secondary-button {
  border: 1px solid #d1d5db;
  border-radius: 14px;
  background: #f3f4f6;
  color: #111827;
  padding: 14px 18px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 180ms ease, transform 160ms ease;
}

.secondary-button:hover {
  background: #e5e7ef;
  transform: translateY(-1px);
}

.hidden {
  display: none;
}

.add-card {
  border-style: dashed;
  background: #f8fafc;
  cursor: pointer;
}

.plus-mark {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border: 1px solid #d1d5db;
  border-radius: 50%;
  font-size: 1.75rem;
  color: #2563eb;
}

.add-card p {
  color: #6b7280;
}

.add-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 18px;
}

.add-form.hidden {
  display: none;
}

.add-form.visible {
  display: flex;
}

.card-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 16px;
}

.card-input,
.card-textarea {
  width: 100%;
  border: 1px solid #d1d5db;
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 1rem;
  background: #f9fafb;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.card-input:focus,
.card-textarea:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
  background: white;
}

.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.small-button {
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease;
}

.small-button:hover {
  transform: translateY(-1px);
}

.cancel-button {
  background: #f3f4f6;
  color: #374151;
  border-color: #d1d5db;
}

.save-button {
  background: #10b981;
  color: white;
}

.delete-button {
  background: #ef4444;
  color: white;
  border-color: #ef4444;
}

.template-card {
  border: 1px solid #d1d5db;
  border-radius: 20px;
  background: white;
  padding: 20px;
  min-height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
  cursor: pointer;
}

.template-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
}

.template-card.selected {
  border-color: #2563eb;
  box-shadow: 0 18px 28px rgba(37, 99, 235, 0.18);
}

.template-card strong {
  display: block;
  margin-bottom: 12px;
  font-size: 0.95rem;
  color: #111827;
}

.template-card p {
  margin: 0;
  color: #4b5563;
  line-height: 1.6;
  white-space: pre-wrap;
}

.form-section {
  display: grid;
  gap: 16px;
  background: white;
  border-radius: 24px;
  padding: 24px;
  border: 1px solid #e5e7eb;
}

.field-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 700;
  color: #111827;
}

input,
textarea {
  width: 100%;
  border: 1px solid #d1d5db;
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 1rem;
  color: #111827;
  background: #f9fafb;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
  background: white;
}

textarea {
  min-height: 150px;
  resize: vertical;
}

.primary-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border: none;
  border-radius: 14px;
  background: #2563eb;
  color: white;
  padding: 16px 22px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 180ms ease, transform 160ms ease;
}

.primary-button:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
}

.note {
  margin: 0;
  color: #6b7280;
  font-size: 0.92rem;
}

@media (max-width: 600px) {
  .app-shell {
    padding: 24px 16px 40px;
  }

  .template-card {
    min-height: 120px;
  }
}