:root {
  --rt-bg: #f7f8fb;
  --rt-surface: #ffffff;
  --rt-border: #e5e7eb;
  --rt-text: #0f172a;
  --rt-muted: #6b7280;
  --rt-accent: #111827;
  --rt-accent-2: #4f46e5;
  --rt-success: #16a34a;
  --rt-warning: #f59e0b;
  --rt-danger: #dc2626;
}

body {
  font-family: "Noto Sans JP", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background-color: var(--rt-bg);
  color: var(--rt-text);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.event-card {
  border: 1px solid var(--rt-border);
  background-color: var(--rt-surface);
  border-radius: 1.25rem;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.event-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.08);
}

.event-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--rt-text);
}

.event-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.event-meta-item {
  font-size: 0.85rem;
  color: var(--rt-muted);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.event-meta-item span {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--rt-text);
}

.fcfs-slot-card {
  border: 1px solid var(--rt-border);
  border-radius: 1rem;
  padding: 1.25rem;
  background-color: var(--rt-surface);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.03);
}

.fcfs-slot-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.fcfs-slot-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--rt-text);
}

.fcfs-status-pill {
  font-size: 0.85rem;
  padding: 0.2rem 0.75rem;
  border-radius: 999px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.fcfs-status-available {
  background-color: rgba(22, 163, 74, 0.12);
  color: var(--rt-success);
}

.fcfs-status-limited {
  background-color: rgba(245, 158, 11, 0.15);
  color: var(--rt-warning);
}

.fcfs-status-none {
  background-color: rgba(220, 38, 38, 0.15);
  color: var(--rt-danger);
}

.fcfs-slot-footer {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.9rem;
  color: var(--rt-muted);
}

.rt-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  background: linear-gradient(120deg, var(--rt-accent), var(--rt-accent-2));
  color: #fff;
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.rt-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 25px rgba(17, 24, 39, 0.25);
}

.rt-section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--rt-text);
}

.rt-section-subtitle {
  font-size: 0.95rem;
  color: var(--rt-muted);
  margin-bottom: 1.5rem;
}

.rt-card-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.rt-card {
  background-color: var(--rt-surface);
  border: 1px solid var(--rt-border);
  border-radius: 1.5rem;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.rt-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--rt-text);
}

.rt-card p {
  font-size: 0.95rem;
  color: var(--rt-muted);
}

@media (max-width: 768px) {
  .fcfs-slot-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .rt-section-title {
    font-size: 1.5rem;
  }
}