:root {
  --bg: #f4f6fa;
  --surface: #ffffff;
  --text: #1c2333;
  --muted: #5b6577;
  --border: #d9dfeb;
  --accent: #2a5bd7;
  --accent-text: #ffffff;
  --notice-bg: #eef3ff;
  --danger: #b3261e;
  --danger-bg: #fdecea;
  --success: #1b6e3a;
  --success-bg: #e6f4ea;
  --warn: #8a5a00;
  --warn-bg: #fff4d6;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151d;
    --surface: #1b2030;
    --text: #e8ebf3;
    --muted: #9aa4b8;
    --border: #2c3348;
    --accent: #6f95ff;
    --accent-text: #0d1222;
    --notice-bg: #1f2740;
    --danger: #ff8a80;
    --danger-bg: #3a1f1d;
    --success: #7ad99a;
    --success-bg: #17301f;
    --warn: #ffd166;
    --warn-bg: #3a2f12;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 16px; }
.nav a { color: var(--text); overflow-wrap: anywhere; }

.brand {
  color: var(--text);
  font-weight: 700;
  font-size: 1.125rem;
  text-decoration: none;
}

.container {
  flex: 1;
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  padding: 32px 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

h1 { margin: 0 0 8px; font-size: 1.5rem; line-height: 1.25; }

.lead { margin: 0 0 16px; font-size: 1.0625rem; }
.muted { color: var(--muted); font-size: 0.875rem; }

.notice {
  margin: 0;
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--notice-bg);
}

.button {
  display: inline-block;
  border: 0;
  font: inherit;
  cursor: pointer;
  padding: 10px 18px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 600;
  text-decoration: none;
}

.button:focus-visible, a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

code { font-family: ui-monospace, Consolas, monospace; word-break: break-all; }

.site-footer {
  padding: 16px 20px 24px;
  color: var(--muted);
  font-size: 0.8125rem;
  text-align: center;
}

.site-footer p { max-width: 560px; margin: 0 auto; }

@media (max-width: 480px) {
  .container { padding: 20px 12px; }
  .card { padding: 18px; }
}

a { color: var(--accent); }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 0; }

.button.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 9px 17px;
}

form.inline { display: inline; margin: 0; }
form.stack { margin-top: 12px; }

button.link {
  padding: 0;
  border: 0;
  background: none;
  color: var(--accent);
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
}

.field { margin-bottom: 16px; }
.field label { display: block; margin-bottom: 4px; font-weight: 600; }

.field input[type="email"],
.field input[type="password"],
.field input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.field input:focus-visible { outline: 3px solid var(--accent); outline-offset: 1px; }

.field.checkbox { display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; align-items: start; }
.field.checkbox label { margin: 0; font-weight: 400; }
.field.checkbox input { margin-top: 5px; width: 18px; height: 18px; }
.field.checkbox .error { grid-column: 2; }

.hint, .error { margin: 4px 0 0; font-size: 0.875rem; }
.hint { color: var(--muted); }
.error { color: var(--danger); }

.notice.success { background: var(--success-bg); color: var(--success); }
.notice.danger { background: var(--danger-bg); color: var(--danger); }
.card > .notice, .container > .notice { margin-bottom: 16px; }

.details { margin: 0; }
.details dt { margin-top: 14px; color: var(--muted); font-size: 0.875rem; }
.details dd { margin: 2px 0 0; overflow-wrap: anywhere; }

.badge {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge.ok { background: var(--success-bg); color: var(--success); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }

.legal p { margin: 0 0 12px; }
.site-footer a { color: inherit; }

.subnav { display: flex; flex-wrap: wrap; gap: 4px 16px; margin: 0 0 16px; padding: 0 0 12px; border-bottom: 1px solid var(--border); }
.subnav a { color: var(--muted); text-decoration: none; }
.subnav a[aria-current="page"] { color: var(--text); font-weight: 600; }

.card + .card { margin-top: 16px; }
h2 { margin: 0 0 12px; font-size: 1.125rem; }

.list { list-style: none; margin: 0; padding: 0; }
.list li { padding: 14px 0; border-top: 1px solid var(--border); }
.list li:first-child { border-top: 0; padding-top: 0; }
.list .row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px 16px; }
.list .title { font-weight: 600; }
.button.small { padding: 6px 12px; font-size: 0.875rem; }
.button.danger { background: var(--danger); color: var(--accent-text); }

.wide { max-width: 1000px; }
.container.wide { max-width: 1000px; }

.table-wrap { overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; }
.table th, .table td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
.table th { color: var(--muted); font-weight: 600; font-size: 0.8125rem; white-space: nowrap; }
.table td.wrap { overflow-wrap: anywhere; }

.toolbar { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: end; margin-bottom: 16px; }
.toolbar .field { margin: 0; }
.toolbar input[type="text"], .toolbar select {
  padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); font: inherit;
}

.pager { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; margin-top: 16px; color: var(--muted); font-size: 0.875rem; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 0; padding: 0; list-style: none; }
.stats li { padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px; }
.stats .value { display: block; font-size: 1.5rem; font-weight: 700; }
.stats .label { color: var(--muted); font-size: 0.8125rem; }

.qr { display: inline-block; background: #fff; padding: 8px; border-radius: 8px; line-height: 0; }
.qr svg { width: 200px; height: 200px; }
.codes { columns: 2; column-gap: 24px; padding: 0; margin: 0 0 16px; list-style: none; font-family: ui-monospace, Consolas, monospace; font-size: 1.0625rem; }
.codes li { padding: 2px 0; }
textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); font: inherit; }
.meta { font-family: ui-monospace, Consolas, monospace; font-size: 0.8125rem; overflow-wrap: anywhere; }

fieldset.field { border: 0; padding: 0; margin-left: 0; margin-right: 0; min-width: 0; }
fieldset.field legend { padding: 0; margin-bottom: 4px; font-weight: 600; }
.choice { display: flex; gap: 8px; align-items: flex-start; margin: 4px 0; font-weight: 400; }
.choice input { margin-top: 5px; }
.details code { overflow-wrap: anywhere; }