:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --text: #1b1f24;
  --muted: #5d6673;
  --border: #dde1e6;
  --accent: #1f6feb;
  --accent-text: #ffffff;
  --danger: #c62828;
  --warn: #9a6700;
  --ok: #1a7f37;
  --chip-bg: #eef1f5;
  --focus: #1f6feb55;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --panel: #171b21;
    --text: #e6e9ee;
    --muted: #9aa4b1;
    --border: #2a313a;
    --accent: #4c8dff;
    --accent-text: #0b0d10;
    --danger: #ff6b6b;
    --warn: #e3b341;
    --ok: #3fb950;
    --chip-bg: #222831;
    --focus: #4c8dff55;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.layout { display: flex; min-height: 100vh; }

.side {
  width: 220px;
  flex: none;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand { font-weight: 700; font-size: 16px; padding: 0 10px 2px; display: flex; align-items: center; gap: 8px; }
.brand img { width: 26px; height: 26px; }
.brand-sub { color: var(--muted); font-size: 12px; padding: 0 10px 18px; }

.nav a {
  display: block;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--text);
}
.nav a:hover { background: var(--chip-bg); text-decoration: none; }
.nav a.active { background: var(--chip-bg); font-weight: 600; }

.side .spacer { flex: 1; }
.side .who { color: var(--muted); font-size: 12px; padding: 0 10px 6px; }

main { flex: 1; min-width: 0; padding: 28px 32px 48px; max-width: 1200px; }

h1 { font-size: 22px; margin: 0 0 18px; }
h2 { font-size: 16px; margin: 0 0 12px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}
.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  color: var(--text);
}
a.stat:hover { border-color: var(--accent); text-decoration: none; }
.stat .n { font-size: 26px; font-weight: 700; }
.stat .l { color: var(--muted); font-size: 12px; }

.toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; align-items: center; }
.toolbar .grow { flex: 1; min-width: 200px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; }
tr.click { cursor: pointer; }
tr.click:hover td { background: var(--chip-bg); }
.table-wrap { overflow-x: auto; }

.chip {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: var(--chip-bg);
}
.chip.active { color: var(--ok); }
.chip.expired, .chip.suspended { color: var(--warn); }
.chip.revoked { color: var(--danger); }

.mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 4px; }
.hint { color: var(--muted); font-size: 12px; font-weight: 400; margin-top: 3px; }

input, select, textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 9px;
}
textarea { min-height: 64px; resize: vertical; }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 3px solid var(--focus); outline-offset: 0; }
input[type="checkbox"] { width: auto; margin-right: 6px; }
.check { display: flex; align-items: center; font-weight: 400; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px 18px; }
.field { margin-bottom: 2px; }
.full { grid-column: 1 / -1; }

button {
  font: inherit;
  font-weight: 600;
  border-radius: 6px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}
button:hover { border-color: var(--muted); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.danger { color: var(--danger); border-color: var(--danger); }
button.danger.solid { background: var(--danger); color: #fff; }
button:disabled { opacity: 0.55; cursor: default; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }

.kv { display: grid; grid-template-columns: 150px 1fr; gap: 6px 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; word-break: break-word; }

.keybox {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  padding: 14px;
  border: 1px dashed var(--accent);
  border-radius: 8px;
  margin: 10px 0;
}
.keybox .key { font-size: 20px; font-weight: 700; letter-spacing: 1px; }

.notice { padding: 10px 12px; border-radius: 6px; background: var(--chip-bg); margin: 8px 0; }
.notice.warn { color: var(--warn); }
.error { color: var(--danger); margin-top: 8px; min-height: 1em; }

.login {
  max-width: 360px;
  margin: 12vh auto 0;
  padding: 0 16px;
}
.login .panel { padding: 24px; }
.login .brand, .login .brand-sub { padding-left: 0; }

.toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  background: var(--text);
  color: var(--bg);
  padding: 10px 14px;
  border-radius: 8px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.15s, transform 0.15s;
  pointer-events: none;
  max-width: calc(100vw - 32px);
}
.toast.show { opacity: 1; transform: none; }

dialog {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  color: var(--text);
  padding: 20px;
  width: min(460px, calc(100vw - 32px));
}
dialog::backdrop { background: rgba(0, 0, 0, 0.45); }

@media (max-width: 760px) {
  .layout { flex-direction: column; }
  .side {
    width: auto;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    border-right: 0;
    border-bottom: 1px solid var(--border);
    padding: 10px 16px;
  }
  .brand-sub, .side .spacer, .side .who { display: none; }
  .brand { padding: 0 10px 0 0; }
  .nav { display: flex; flex-wrap: wrap; gap: 2px; }
  main { padding: 18px 16px 40px; }
  .kv { grid-template-columns: 1fr; }
  .kv dt { margin-top: 6px; }
}