@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;600;700&display=swap");

:root {
  --bg: #0f172a;
  --bg-2: #1e293b;
  --card: #0b1220;
  --accent: #38bdf8;
  --accent-2: #fbbf24;
  --text: #e2e8f0;
  --muted: #94a3b8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 800px at 20% 10%, #1b2b4a 0%, var(--bg) 45%)
      no-repeat,
    linear-gradient(160deg, #0b1220, #0f172a 60%, #1e293b 100%);
  min-height: 100vh;
}

.shell {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}

.hero {
  margin-bottom: 28px;
}

.hero.compact {
  margin-bottom: 12px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 12px;
  color: var(--accent);
  margin: 0 0 8px;
}

h1 {
  font-size: 42px;
  margin: 0 0 8px;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.card {
  background: linear-gradient(160deg, rgba(30, 41, 59, 0.65), rgba(15, 23, 42, 0.9));
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 18px;
  backdrop-filter: blur(8px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.card.muted {
  color: var(--muted);
}

label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 14px;
}

textarea {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(15, 23, 42, 0.8);
  color: var(--text);
  padding: 12px;
  font-size: 14px;
  resize: vertical;
}

.selector-group {
  margin-top: 16px;
}

select {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(15, 23, 42, 0.8);
  color: var(--text);
  padding: 10px 12px;
  font-size: 14px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='white'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 12px;
  flex-wrap: wrap;
}

button,
.ghost {
  padding: 10px 16px;
  border-radius: 999px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

button {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #0b1220;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.hint {
  color: var(--muted);
  font-size: 12px;
  margin-top: 10px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.label {
  color: var(--muted);
  margin: 0 0 6px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.price {
  font-size: 22px;
  color: var(--accent-2);
  margin: 0;
}

.savings-container {
  min-height: 42px; /* レイアウト崩れ防止 */
}

.savings-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, #fbbf24 0%, #d97706 100%);
  color: #0f172a;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
  margin-top: 8px;
  box-shadow: 0 4px 12px rgba(251, 191, 36, 0.4);
  animation: bounce-in 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.savings-badge.motorcycle {
  background: linear-gradient(135deg, #22d3ee 0%, #0ea5e9 100%);
  color: #06121f;
  font-size: 14px;
  padding: 6px 14px;
  box-shadow: 0 6px 16px rgba(14, 165, 233, 0.45);
}

@keyframes bounce-in {
  0% { transform: scale(0.3); opacity: 0; }
  70% { transform: scale(1.1); }
  100% { transform: scale(1); opacity: 1; }
}

.savings-label {
  font-size: 11px;
  text-transform: uppercase;
  margin-right: 4px;
}

.plan {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.compare-card {
  margin-top: 12px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.35);
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.compare-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 0 0 8px;
}

.compare-best {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: rgba(34, 211, 238, 0.18);
  border: 1px solid rgba(34, 211, 238, 0.4);
  padding: 8px 10px;
  border-radius: 10px;
  color: #e2f5ff;
  font-weight: 700;
  margin-bottom: 10px;
}

.compare-list {
  display: grid;
  gap: 6px;
}

.compare-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  color: #e2e8f0;
}

.compare-row .muted {
  color: var(--muted);
}

.compare-row .pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(148, 163, 184, 0.2);
  font-size: 11px;
  color: var(--muted);
}

.fee-list {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
}

.fee-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  font-size: 14px;
}

.fee-row.highlight {
  color: var(--accent);
  font-weight: 600;
}

details summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
  list-style: none;
}

details summary::-webkit-details-marker {
  display: none;
}

details summary:hover {
  color: var(--text);
}

ul {
  margin: 8px 0 0;
  padding-left: 18px;
}

@media (max-width: 600px) {
  h1 {
    font-size: 34px;
  }
}