:root {
  color-scheme: light;
  font-family: Inter, Pretendard, "Noto Sans KR", Arial, sans-serif;
  color: #17212b;
  background: #f3f5f7;
  --navy: #183c5b;
  --blue: #28658f;
  --green: #287258;
  --amber: #a86516;
  --red: #b13d3d;
  --line: #dce2e7;
  --muted: #66737f;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.topbar {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 max(24px, calc((100vw - 1080px) / 2));
  border-bottom: 1px solid #d9e0e5;
  background: rgba(255,255,255,.92);
}
.topbar nav { display: flex; align-items: center; gap: 8px; }
.brand { color: var(--navy); font-size: 17px; font-weight: 900; letter-spacing: .12em; text-decoration: none; }
.nav-link, .nav-button { padding: 9px 12px; border: 0; border-radius: 7px; color: #42515f; background: transparent; font-size: 14px; font-weight: 700; text-decoration: none; cursor: pointer; }
.nav-link:hover, .nav-button:hover { background: #eef2f5; color: var(--navy); }

.container { width: min(1080px, calc(100% - 40px)); margin: 0 auto; padding: 26px 0 36px; }
.hero { display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; margin-bottom: 14px; }
.eyebrow, .card-label { margin: 0 0 8px; color: #6b7884; font-size: 11px; font-weight: 800; letter-spacing: .15em; }
h1 { margin: 0; color: #172635; font-size: clamp(28px, 4vw, 36px); line-height: 1.1; letter-spacing: -.035em; }
h2 { margin: 0; font-size: 19px; letter-spacing: -.015em; }
.description { margin: 6px 0 0; color: var(--muted); font-size: 14px; line-height: 1.4; }

button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .52; }
.secondary-button, .primary-button, .danger-button { min-height: 42px; padding: 10px 17px; border-radius: 8px; font-weight: 800; }
.secondary-button { border: 1px solid #b8c3cc; color: #334554; background: #fff; }
.secondary-button:hover { border-color: #8495a3; background: #fafbfc; }
.primary-button { border: 0; color: white; background: var(--navy); }
.primary-button:hover { background: #102f49; }
.danger-button { border: 1px solid #c65c5c; color: #a42f2f; background: #fff8f8; }
.danger-button:hover:not(:disabled) { color: white; background: var(--red); }

.overall-card, .card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 8px 30px rgba(30,45,58,.055);
}
.overall-card { position: relative; overflow: hidden; display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 54px; padding: 6px 12px 6px 16px; margin-bottom: 8px; }
.overall-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: #8b98a3; }
.overall-card .card-label { display: none; }
.status-heading { display: flex; align-items: center; gap: 8px; }
.status-heading h2 { font-size: 18px; }
.status-dot { width: 7px; height: 7px; border-radius: 99px; background: #8b98a3; box-shadow: 0 0 0 3px rgba(139,152,163,.12); }
.status-available::before, .status-available .status-dot { background: var(--green); }
.status-in_use::before, .status-in_use .status-dot { background: var(--blue); }
.status-check_needed::before, .status-check_needed .status-dot { background: var(--amber); }
.status-service_outage::before, .status-service_outage .status-dot { background: var(--red); }
.status-summary { margin: 3px 0 0 16px; color: var(--muted); font-size: 12px; }
.checked-at { display: grid; gap: 2px; text-align: right; color: var(--muted); font-size: 10px; }
.checked-at strong { color: #314252; font-size: 12px; }

.grid { display: grid; gap: 12px; }
.two-column { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { padding: 18px; }
.card + .card:not(.grid .card) { margin-top: 18px; }
.card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; margin-bottom: 14px; }
.chip { display: inline-flex; align-items: center; min-height: 26px; padding: 4px 9px; border-radius: 99px; color: #596875; background: #edf1f4; font-size: 11px; font-weight: 900; letter-spacing: .04em; }
.chip-good { color: #21654d; background: #e4f4ed; }
.chip-warn { color: #90570f; background: #fff0d6; }
.chip-bad { color: #993636; background: #fae5e5; }
.metric-list { margin: 0; }
.metric-list > div { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; padding: 8px 0; border-bottom: 1px solid #edf0f2; }
.metric-list > div:first-child { padding-top: 0; }
.metric-list > div:last-child { border-bottom: 0; }
.metric-list dt { color: var(--muted); }
.metric-list dd { margin: 0; max-width: 64%; text-align: right; font-weight: 750; overflow-wrap: anywhere; }
.metric-list.compact { margin-top: 14px; font-size: 13px; }
details { margin-top: 8px; padding-top: 8px; border-top: 1px solid #edf0f2; }
summary { color: #536574; font-size: 13px; font-weight: 750; cursor: pointer; }

.license-counts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin: 3px 0 12px; }
.license-counts div { display: grid; gap: 4px; text-align: center; }
.license-counts strong { color: var(--navy); font-size: 28px; line-height: 1.1; }
.license-counts span { color: var(--muted); font-size: 12px; }
.client-box { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px; border-radius: 8px; background: #f3f6f8; }
.client-box span { color: var(--muted); font-size: 13px; }
.client-box strong { font-size: 16px; overflow-wrap: anywhere; }

.notice-card { margin-top: 18px; border-color: #e5c890; background: #fffcf5; }
.notice-card .card-header { margin-bottom: 12px; }
.notice-card ul { margin: 0; padding-left: 20px; color: #79521e; line-height: 1.7; }
.errors-card { margin-top: 18px; }
.muted { color: var(--muted); font-size: 12px; }
.empty-state { padding: 22px; border-radius: 9px; color: var(--muted); background: #f5f7f8; text-align: center; }
.error-list { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.error-list li { padding: 11px 13px; border-left: 3px solid #d06a6a; background: #faf5f5; overflow-x: auto; }
.error-list code { color: #713838; font-size: 12px; white-space: pre-wrap; }
.restart-card { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 18px; }
.restart-card p:not(.card-label) { margin: 9px 0 0; color: var(--muted); line-height: 1.55; }
.collapsible-card { display: block; margin-top: 5px; padding: 0; border-top: 1px solid var(--line); border-radius: 7px; }
.card + .card.collapsible-card { margin-top: 5px; }
.collapsible-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  margin: 0;
  padding: 4px 8px;
  border: 0;
  border-radius: 7px;
  color: #17212b;
  list-style: none;
}
.collapsible-summary::-webkit-details-marker { display: none; }
.collapsible-summary:hover { background: #f8fafb; }
.collapsible-summary:focus-visible { outline: 3px solid rgba(40,101,143,.2); outline-offset: -3px; }
.collapsible-title { display: grid; gap: 0; }
.collapsible-title .card-label { display: none; }
.collapsible-heading { font-size: 14px; font-weight: 800; letter-spacing: -.01em; }
.collapsible-meta { display: inline-flex; align-items: center; gap: 6px; }
.collapsible-meta .muted { font-size: 11px; }
.collapsible-chevron { display: inline-block; color: #536574; font-size: 14px; line-height: 1; transition: transform .18s ease; }
.collapsible-card[open] > .collapsible-summary { border-radius: 7px 7px 0 0; }
.collapsible-card[open] > .collapsible-summary .collapsible-chevron { transform: rotate(180deg); }
.collapsible-body { padding: 0 8px 8px; }
.collapsible-body .empty-state { padding: 8px; font-size: 12px; }
.collapsible-body .error-list { gap: 5px; }
.collapsible-body .error-list li { padding: 6px 8px; }
.restart-card.collapsible-card { display: block; }
.restart-content { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.restart-content p { margin: 0 !important; font-size: 12px; line-height: 1.4 !important; }
.restart-content .danger-button { min-height: 34px; padding: 6px 12px; font-size: 12px; }

.toast { position: fixed; right: 24px; bottom: 24px; z-index: 10; max-width: min(420px, calc(100% - 48px)); margin: 0; padding: 13px 16px; border-radius: 9px; color: #fff; background: #1d4b3c; box-shadow: 0 10px 30px rgba(0,0,0,.18); font-size: 14px; }
.toast-error { background: #923737; }

.login-page { display: grid; place-items: center; padding: 28px; }
.login-shell { width: min(440px, 100%); }
.back-link { display: inline-block; margin-bottom: 16px; color: #506575; font-size: 14px; font-weight: 700; text-decoration: none; }
.login-card { padding: 32px; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: 0 12px 40px rgba(30,45,58,.08); }
.login-card h1 { font-size: 30px; }
.login-card label { display: block; margin: 26px 0 9px; font-size: 14px; font-weight: 800; }
.login-card input { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid #aebbc5; border-radius: 8px; }
.login-card input:focus { outline: 3px solid rgba(40,101,143,.17); border-color: var(--blue); }
.login-card button { width: 100%; margin-top: 18px; }
.form-error { margin: 10px 0 0; color: var(--red); font-size: 13px; }

[hidden] { display: none !important; }

@media (max-width: 760px) {
  .container { width: min(100% - 28px, 680px); padding: 20px 0 32px; }
  .topbar { min-height: 58px; padding: 0 14px; }
  .topbar nav { gap: 0; }
  .nav-link, .nav-button { padding: 8px; font-size: 12px; }
  .hero { align-items: stretch; flex-direction: column; }
  .hero .secondary-button { align-self: flex-start; }
  .overall-card { align-items: flex-start; flex-direction: column; min-height: 0; padding: 6px 12px; }
  .checked-at { text-align: left; }
  .two-column { grid-template-columns: 1fr; }
  .card { padding: 16px; }
  .card.collapsible-card { padding: 0; }
  .restart-content { align-items: stretch; flex-direction: column; }
  .collapsible-summary { padding: 4px 8px; }
  .collapsible-body { padding: 0 8px 8px; }
  .danger-button { width: 100%; }
}

@media (max-width: 420px) {
  .brand { font-size: 14px; }
  .nav-link:first-child { display: none; }
  .status-heading h2 { font-size: 19px; }
  .status-summary { margin-left: 0; }
  .metric-list > div { flex-direction: column; gap: 5px; }
  .metric-list dd { max-width: 100%; text-align: left; }
  .login-page { padding: 18px; }
  .login-card { padding: 24px; }
}