:root {
    --ink: #0f2a3d; --muted: #5b6b78; --line: #e2e8ee; --bg: #f4f7fa; --card: #fff;
    --brand: #0b72c7; --brand-dark: #085a9e;
    --ok: #177245; --okbg: #e7f5ed; --err: #b3261e; --errbg: #fdecea; --mid: #7a5a00; --midbg: #fff4d6;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, "Segoe UI", Arial, sans-serif; background: var(--bg); color: var(--ink); font-size: 15px; }
a { color: var(--brand); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
main.wrap { padding-top: 24px; padding-bottom: 60px; }

/* top bar */
.topbar { background: #0f2a3d; color: #fff; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; min-height: 56px; }
.brand { color: #fff; text-decoration: none; font-weight: 700; font-size: 17px; }
.brand span { font-weight: 400; opacity: .7; }
nav { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
nav a, nav button.link { color: #cfe0ee; text-decoration: none; padding: 8px 10px; border-radius: 6px; font-size: 14px; }
nav a:hover, nav button.link:hover { background: rgba(255,255,255,.1); color: #fff; }
nav a.active { background: rgba(255,255,255,.16); color: #fff; font-weight: 600; }
form.inline { display: inline; margin: 0; }
button.link { background: none; border: 0; cursor: pointer; font: inherit; }

.page-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
h1 { font-size: 24px; margin: 0; }
.env { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; padding: 3px 8px; border-radius: 4px; }
.env-sandbox { background: var(--midbg); color: var(--mid); }
.env-production { background: var(--okbg); color: var(--ok); }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 20px; margin-bottom: 18px; }
.card h2 { font-size: 17px; margin: 0 0 14px; }
.hint { color: var(--muted); font-size: 13px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.spread { justify-content: space-between; }

/* forms */
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 4px 16px; }
.form-grid .full { grid-column: 1 / -1; }
label { display: block; font-weight: 600; font-size: 13px; margin: 12px 0 6px; }
label .opt { font-weight: 400; color: var(--muted); }
input, select, textarea { width: 100%; padding: 9px 10px; font-size: 14px; border: 1px solid #c9d3dc; border-radius: 6px; font-family: inherit; background: #fff; color: var(--ink); }
input[type=checkbox] { width: auto; margin-right: 6px; }
textarea { min-height: 90px; }
textarea.mono { font-family: Consolas, Menlo, monospace; min-height: 120px; }
.check { display: flex; align-items: center; font-weight: 400; margin-top: 34px; }
.actions { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }

button, .btn { display: inline-block; padding: 10px 16px; font-size: 14px; font-weight: 600; border-radius: 6px; border: 1px solid var(--brand); background: var(--brand); color: #fff; cursor: pointer; text-decoration: none; font-family: inherit; }
button:hover, .btn:hover { background: var(--brand-dark); }
button.ghost, .btn.ghost { background: #fff; color: var(--brand); }
button.danger { background: #fff; color: var(--err); border-color: var(--err); }
button.small, .btn.small { padding: 6px 10px; font-size: 13px; }
button:disabled { opacity: .6; cursor: default; }

/* tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); padding: 8px 10px; border-bottom: 2px solid var(--line); white-space: nowrap; }
td { padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.kv td:first-child { color: var(--muted); width: 210px; padding-left: 0; }
table.kv td { padding-left: 0; }
td.num, th.num { text-align: right; white-space: nowrap; }
tr.best td { background: #f2f8fd; }

code, .mono { font-family: Consolas, Menlo, monospace; font-size: 13px; word-break: break-all; }
.badge { display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 12px; font-weight: 700; white-space: nowrap; }
.badge.on { background: var(--okbg); color: var(--ok); }
.badge.off { background: #eef1f4; color: var(--muted); }
.badge.bad { background: var(--errbg); color: var(--err); }
.badge.mid { background: #e8f1fb; color: var(--brand-dark); }

.flash { padding: 12px 14px; border-radius: 8px; margin-bottom: 18px; font-size: 14px; }
.flash.ok { background: var(--okbg); color: var(--ok); }
.flash.error { background: var(--errbg); color: var(--err); }

.linkbox { display: flex; gap: 8px; align-items: stretch; margin-top: 8px; }
.linkbox input { font-family: Consolas, Menlo, monospace; font-size: 13px; }

.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.tile { display: block; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; text-decoration: none; color: var(--ink); }
.tile:hover { border-color: var(--brand); }
.tile strong { display: block; margin-bottom: 4px; }
.tile span { color: var(--muted); font-size: 13px; }

pre.json { background: #0f1b26; color: #d7e3ee; padding: 14px; border-radius: 8px; overflow: auto; max-height: 420px; font-size: 12.5px; }
details summary { cursor: pointer; color: var(--brand); font-size: 14px; }
.pager { display: flex; gap: 10px; align-items: center; margin-top: 14px; }

@media (max-width: 640px) {
    table.kv td:first-child { width: 130px; }
    .linkbox { flex-direction: column; }
    .check { margin-top: 12px; }
}