* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
    "Microsoft YaHei", sans-serif;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  min-height: 100vh;
  color: #eaeaea;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 24px;
}

.container {
  width: 100%;
  max-width: 720px;
}

.title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.5em;
  text-indent: 0.5em;
  margin-bottom: 32px;
  color: #f5f5f5;
}

.card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  padding: 32px;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.clock-card {
  text-align: center;
}

.clock-time {
  font-size: 4.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.1em;
  color: #7ee8fa;
  text-shadow: 0 0 24px rgba(126, 232, 250, 0.35);
  font-family: "SF Mono", Consolas, "Courier New", monospace;
}

.clock-date {
  font-size: 1.2rem;
  margin-top: 16px;
  color: #cfd8e3;
}

.clock-weekday {
  display: inline-block;
  margin-top: 12px;
  font-size: 1rem;
  padding: 6px 20px;
  border-radius: 999px;
  background: rgba(126, 232, 250, 0.15);
  color: #7ee8fa;
  border: 1px solid rgba(126, 232, 250, 0.3);
}

.api-card h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: #f5f5f5;
}

.endpoint {
  margin-bottom: 16px;
}

.endpoint:last-child {
  margin-bottom: 0;
}

.endpoint code {
  display: inline-block;
  font-size: 0.9rem;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(126, 232, 250, 0.1);
  color: #7ee8fa;
  border: 1px solid rgba(126, 232, 250, 0.25);
  font-family: "SF Mono", Consolas, "Courier New", monospace;
  margin-bottom: 8px;
}

.json-block {
  font-family: "SF Mono", Consolas, "Courier New", monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 10px;
  padding: 14px 18px;
  white-space: pre-wrap;
  word-break: break-all;
  color: #a8e6a3;
}

.footer {
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

@media (max-width: 480px) {
  .clock-time {
    font-size: 3rem;
  }

  .card {
    padding: 24px;
  }
}