:root {
  --bg-deep: #0a0612;
  --bg-card: rgba(22, 14, 36, 0.85);
  --text: #f0e8f8;
  --text-muted: #a89bb8;
  --accent: #c9a227;
  --accent-soft: rgba(201, 162, 39, 0.25);
  --border: rgba(201, 162, 39, 0.2);
  --radius: 14px;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Noto Sans JP', sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--text);
  background: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(88, 48, 120, 0.4), transparent),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(40, 24, 64, 0.5), transparent);
  line-height: 1.7;
}

.stars {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(1px 1px at 60% 70%, rgba(255, 255, 255, 0.3), transparent),
    radial-gradient(1px 1px at 80% 10%, rgba(255, 255, 255, 0.35), transparent),
    radial-gradient(1px 1px at 40% 80%, rgba(255, 255, 255, 0.25), transparent),
    radial-gradient(1.5px 1.5px at 10% 60%, rgba(201, 162, 39, 0.5), transparent),
    radial-gradient(1px 1px at 90% 40%, rgba(255, 255, 255, 0.3), transparent);
  opacity: 0.8;
  z-index: 0;
}

.site-header,
.container,
.site-footer {
  position: relative;
  z-index: 1;
}

.site-header {
  text-align: center;
  padding: 3rem 1.5rem 1.5rem;
}

.logo__symbol {
  display: block;
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
  50% { opacity: 0.6; transform: scale(1.1); }
}

.logo h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 3.5rem);
  font-weight: 600;
  letter-spacing: 0.12em;
  margin: 0;
  background: linear-gradient(135deg, #f5e6b8, var(--accent), #8b6914);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  margin: 0.5rem 0 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
}

.container {
  max-width: 560px;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

.intro {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.form-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.field {
  margin-bottom: 1.5rem;
}

.field label,
.field legend {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.field legend {
  padding: 0;
}

.field input {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.hint {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.birth-inputs {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 0.75rem;
}

.birth-inputs label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: none;
  letter-spacing: 0;
}

.error {
  color: #f08080;
  font-size: 0.9rem;
  margin: 0 0 1rem;
}

.btn-primary {
  position: relative;
  width: 100%;
  padding: 1rem 1.5rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--bg-deep);
  background: linear-gradient(135deg, #f5e6b8, var(--accent));
  border: none;
  border-radius: 8px;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.15s, box-shadow 0.2s;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px var(--accent-soft);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: block;
  width: 100%;
  max-width: 520px;
  margin: 1.5rem auto 0;
  padding: 0.75rem;
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

.btn-secondary:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.results {
  margin-top: 2.5rem;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.results-section {
  margin-bottom: 2.5rem;
}

.results-section__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-align: center;
  margin: 0 0 0.5rem;
}

.results-section__subtitle {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0 0 1.25rem;
  line-height: 1.6;
}

.results-section__grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.results-greeting {
  text-align: center;
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.number-card {
  --accent: #c9a227;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  backdrop-filter: blur(8px);
  animation: fadeUp 0.5s ease backwards;
}

.number-card:nth-child(2) { animation-delay: 0.05s; }
.number-card:nth-child(3) { animation-delay: 0.1s; }
.number-card:nth-child(4) { animation-delay: 0.15s; }
.number-card:nth-child(5) { animation-delay: 0.2s; }
.number-card:nth-child(6) { animation-delay: 0.25s; }

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
}

.number-card__header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.number-card__badge {
  flex-shrink: 0;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--bg-deep);
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 20px color-mix(in srgb, var(--accent) 50%, transparent);
}

.number-card__header h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.number-card__subtitle {
  margin: 0.25rem 0 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.number-card__desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0 0 0.75rem;
}

.number-card__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
}

.number-card__footer {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.site-footer {
  text-align: center;
  padding: 2rem 1.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (max-width: 400px) {
  .birth-inputs {
    grid-template-columns: 1fr;
  }
}