/* MEBY 共通スタイル */
* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(circle at 50% 20%, #1f2f23 0%, #121212 70%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: #eee;
  min-height: 100vh;
}

#navbar {
  height: 48px;
  background: rgba(18, 18, 18, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  position: sticky;
  top: 0;
  z-index: 200;
}
.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo {
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 1.5px;
  color: #4caf50;
  margin-right: 12px;
  text-decoration: none;
}
.nav-tab {
  color: #aaa;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.2s;
}
.nav-tab:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav-tab.active { color: #fff; background: #2e7d32; }

/* トースト通知 (共通) */
#toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(30, 30, 30, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 13px;
  z-index: 1000;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28);
  pointer-events: none;
  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
}
#toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
#toast.error { border-color: #ef5350; color: #ffcdd2; }