/* 占位页面统一样式（N-Body / Orbit Optimizer / Data Vault 共用） */

.ph-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 24px;
}

.ph-card {
  background: var(--cyber-panel);
  border: 1px solid var(--cyber-border);
  border-radius: 8px;
  padding: 40px 36px;
  max-width: 520px;
  width: 100%;
  text-align: center;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.5), inset 0 0 30px rgba(0, 255, 255, 0.02);
}

.ph-topbar {
  font-family: 'Courier New', monospace;
  font-size: 11px;
  color: var(--neon-red);
  letter-spacing: 0.06em;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.ph-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}
.ph-dot.offline {
  background: var(--neon-red);
  box-shadow: 0 0 6px var(--neon-red);
}

.ph-card h1 {
  font-family: 'Courier New', monospace;
  font-size: 28px;
  color: var(--neon-cyan);
  text-shadow: 0 0 8px rgba(0, 255, 255, 0.4);
  margin: 0 0 16px;
  letter-spacing: 0.04em;
}

.ph-desc {
  color: var(--cyber-text-dim, #5a8a8a);
  font-size: 14px;
  line-height: 1.7;
  margin: 0 0 24px;
}

.ph-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
  margin: 0 auto 24px;
  width: 60%;
  opacity: 0.4;
}

.ph-status {
  font-family: 'Courier New', monospace;
  font-size: 12px;
  color: var(--neon-yellow);
  text-shadow: 0 0 4px rgba(255, 255, 0, 0.3);
  margin: 0 0 28px;
  letter-spacing: 0.06em;
}

.ph-back {
  display: inline-block;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  color: var(--neon-cyan);
  text-decoration: none;
  border: 1px solid var(--cyber-border);
  padding: 8px 20px;
  border-radius: 4px;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.ph-back:hover {
  background: rgba(0, 255, 255, 0.08);
  border-color: var(--neon-cyan);
  box-shadow: 0 0 10px rgba(0, 255, 255, 0.2);
}

@media (max-width: 767px) {
  .ph-card {
    padding: 28px 20px;
  }
  .ph-card h1 {
    font-size: 20px;
  }
}