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

:root {
  --color-bg: #f5f7fa;
  --color-surface: #ffffff;
  --color-primary: #1a3a5c;
  --color-accent: #2c7be5;
  --color-text: #2d3748;
  --color-text-light: #718096;
  --color-border: #e2e8f0;
  --color-running: #48bb78;
  --color-preparing: #ed8936;
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ── */
header {
  background: var(--color-primary);
  color: #fff;
  padding: 2rem 1.5rem;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
}

header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.subtitle {
  margin-top: 0.25rem;
  font-size: 0.875rem;
  opacity: 0.8;
}

/* ── Main ── */
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  flex: 1;
  width: 100%;
}

section {
  margin-bottom: 2.5rem;
}

h2 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 0.5rem;
}

/* ── Server Info ── */
.server-info dl {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.server-info dl > div {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  flex: 1 1 200px;
}

.server-info dt {
  font-size: 0.75rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.server-info dd {
  font-weight: 600;
  font-size: 0.95rem;
}

/* ── Card Grid ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.15s, transform 0.15s;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

a.card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.card h3 {
  font-size: 1rem;
  font-weight: 600;
}

.card p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  flex: 1;
}

.card-status {
  align-self: flex-start;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card-status.running {
  background: #f0fff4;
  color: var(--color-running);
}

.card-status.preparing {
  background: #fffaf0;
  color: var(--color-preparing);
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.25rem;
}

.tag {
  font-size: 0.7rem;
  background: var(--color-bg);
  color: var(--color-text-light);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--color-border);
}

/* ── External Cards ── */
.card-external {
  opacity: 0.7;
  border-style: dashed;
}

/* ── Other Services ── */
.other-services-note {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 1rem;
}

/* ── Footer ── */
footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.8rem;
  color: var(--color-text-light);
  border-top: 1px solid var(--color-border);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  header { padding: 1.5rem 1rem; }
  main { padding: 1.5rem 1rem; }
  .card-grid { grid-template-columns: 1fr; }
}