:root {
  color-scheme: light;
  --surface: #f4f6f4;
  --panel: #ffffff;
  --ink: #15171a;
  --ink-2: #4f555d;
  --ink-3: #7a8088;
  --rule: #dde1dd;
  --rule-strong: #c5cbc6;
  --accent: #0b6e69;
  --accent-ink: #ffffff;
  --accent-soft: #e2f0ee;
  --danger: #b4302f;
  --danger-soft: #fbeaea;
  --warn: #9a6200;
  --code-bg: #eef1ee;
  --meter-track: #e6eae6;
  --series-1: #2a78d6; --series-2: #eb6834; --series-3: #1baf7a; --series-4: #eda100; --series-5: #e87ba4;
  --font: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --surface: #121416; --panel: #1a1d20; --ink: #eceeed; --ink-2: #b1b7bc; --ink-3: #868d93;
    --rule: #2b2f33; --rule-strong: #3b4045; --accent: #4fb7ae; --accent-ink: #0c1413; --accent-soft: #17302d;
    --danger: #ef7d7b; --danger-soft: #3a1d1d; --warn: #e3a63a; --code-bg: #22262a; --meter-track: #2a2e32;
    --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70; --series-4: #c98500; --series-5: #d55181;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --surface: #121416; --panel: #1a1d20; --ink: #eceeed; --ink-2: #b1b7bc; --ink-3: #868d93;
  --rule: #2b2f33; --rule-strong: #3b4045; --accent: #4fb7ae; --accent-ink: #0c1413; --accent-soft: #17302d;
  --danger: #ef7d7b; --danger-soft: #3a1d1d; --warn: #e3a63a; --code-bg: #22262a; --meter-track: #2a2e32;
  --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70; --series-4: #c98500; --series-5: #d55181;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--surface); color: var(--ink); font: 15px/1.55 var(--font); }
a { color: var(--accent); text-underline-offset: 2px; }
h1, h2, h3 { line-height: 1.2; margin: 0; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: 1.75rem; }
h2 { font-size: 1.15rem; margin: 2.25rem 0 0.75rem; }
h3 { font-size: 1rem; }
p { margin: 0.4rem 0; max-width: 72ch; }
code, kbd, pre, .mono { font-family: var(--mono); font-size: 0.86em; }
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; }
pre { background: var(--code-bg); padding: 0.9rem 1rem; border-radius: 8px; overflow-x: auto; line-height: 1.5; margin: 0.5rem 0 1rem; }
pre code { background: none; padding: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.muted { color: var(--ink-2); }
.subtle { color: var(--ink-3); font-size: 0.88rem; }

/* ---------------------------------------------------------------- shell */
.shell { display: grid; grid-template-columns: 232px minmax(0, 1fr); min-height: 100vh; }
.rail { border-right: 1px solid var(--rule); padding: 1.4rem 1rem; display: flex; flex-direction: column; gap: 1.6rem;
        position: sticky; top: 0; height: 100vh; background: var(--surface); }
.brand { display: flex; align-items: center; gap: 0.55rem; font-weight: 600; color: var(--ink); text-decoration: none; padding: 0 0.5rem; }
.brand svg { flex: none; }
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav-group { color: var(--ink-3); font-size: 0.8rem; padding: 0.9rem 0.6rem 0.3rem; }
.nav a { color: var(--ink-2); text-decoration: none; padding: 0.42rem 0.6rem; border-radius: 6px; }
.nav a:hover { color: var(--ink); background: var(--panel); }
.nav a[aria-current="page"] { color: var(--ink); background: var(--panel); box-shadow: inset 2px 0 0 var(--accent); }
.rail-foot { margin-top: auto; font-size: 0.86rem; color: var(--ink-2); padding: 0 0.6rem; }
.rail-foot .who { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--ink); }
.main { padding: 2.25rem clamp(16px, 4vw, 3rem) 4rem; max-width: 1120px; width: 100%; }
.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.page-head p { margin-top: 0.35rem; }

@media (max-width: 820px) {
  .shell { grid-template-columns: minmax(0, 1fr); }
  .rail { position: static; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem;
          border-right: 0; border-bottom: 1px solid var(--rule); padding: 0.8rem 16px; }
  .nav { flex-direction: row; flex-wrap: wrap; gap: 2px; width: 100%; }
  .nav-group { display: none; }
  .rail-foot { margin: 0; display: flex; gap: 0.75rem; align-items: center; width: 100%; padding: 0; }
  .main { padding: 1.5rem 16px 3rem; }
}

/* ---------------------------------------------------------------- controls */
.btn { display: inline-flex; align-items: center; gap: 0.4rem; border: 1px solid var(--rule-strong); background: var(--panel);
       color: var(--ink); font: inherit; font-size: 0.9rem; padding: 0.45rem 0.85rem; border-radius: 7px; cursor: pointer;
       text-decoration: none; white-space: nowrap; }
.btn:hover { border-color: var(--ink-3); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn-primary:hover { filter: brightness(1.08); border-color: var(--accent); }
.btn-danger { color: var(--danger); }
.btn-danger:hover { border-color: var(--danger); }
.btn-small { padding: 0.25rem 0.6rem; font-size: 0.84rem; }
.btn-link { border: 0; background: none; padding: 0; color: var(--ink-2); font: inherit; cursor: pointer; text-decoration: underline; text-underline-offset: 2px; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=search], select, textarea {
  font: inherit; color: var(--ink); background: var(--panel); border: 1px solid var(--rule-strong); border-radius: 7px;
  padding: 0.5rem 0.65rem; width: 100%; min-width: 0; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
label { display: block; font-size: 0.88rem; font-weight: 500; margin-bottom: 0.3rem; }
.field { margin-bottom: 1rem; }
.field .hint { font-size: 0.82rem; color: var(--ink-3); margin-top: 0.25rem; }
.row { display: flex; gap: 0.6rem; align-items: center; flex-wrap: wrap; }
.row > .grow { flex: 1 1 220px; }
.inline { display: inline; }
.check { display: flex; gap: 0.5rem; align-items: center; font-weight: 400; }
.check input { width: auto; }

/* ---------------------------------------------------------------- flash */
.flash { padding: 0.65rem 0.9rem; border-radius: 8px; margin-bottom: 1rem; background: var(--accent-soft); border: 1px solid transparent; }
.flash-error { background: var(--danger-soft); color: var(--danger); }

/* ---------------------------------------------------------------- panels & tables */
.panel { background: var(--panel); border: 1px solid var(--rule); border-radius: 10px; padding: 1.1rem 1.25rem; }
.table-wrap { background: var(--panel); border: 1px solid var(--rule); border-radius: 10px; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th { text-align: left; font-weight: 500; color: var(--ink-2); font-size: 0.82rem; padding: 0.6rem 0.9rem; border-bottom: 1px solid var(--rule); white-space: nowrap; }
td { padding: 0.6rem 0.9rem; border-bottom: 1px solid var(--rule); vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.nowrap td { white-space: nowrap; }
td.wrap { max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.empty { padding: 2rem 1rem; text-align: center; color: var(--ink-2); }

.badge { display: inline-block; font-size: 0.78rem; padding: 0.08rem 0.5rem; border-radius: 99px; border: 1px solid var(--rule-strong); color: var(--ink-2); white-space: nowrap; }
.badge-accent { border-color: var(--accent); color: var(--accent); }
.badge-danger { border-color: var(--danger); color: var(--danger); }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 0.35rem; vertical-align: middle; }

/* ---------------------------------------------------------------- stats & meters */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); grid-auto-rows: 1fr; gap: 1px; background: var(--rule);
         border: 1px solid var(--rule); border-radius: 10px; overflow: hidden; }
.stat { background: var(--panel); padding: 0.9rem 1.1rem; }
.stat .label { font-size: 0.82rem; color: var(--ink-2); }
.stat .value { font-size: 1.6rem; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; margin-top: 0.15rem; }
.stat .value small { font-size: 0.85rem; font-weight: 400; color: var(--ink-2); margin-left: 0.2rem; letter-spacing: 0; }

.meters { display: grid; gap: 1.1rem; }
.meter-head { display: flex; justify-content: space-between; gap: 1rem; font-size: 0.9rem; margin-bottom: 0.35rem; flex-wrap: wrap; }
.meter-head strong { font-weight: 600; }
.meter-track { height: 10px; background: var(--meter-track); border-radius: 99px; overflow: hidden; }
.meter-fill { height: 100%; background: var(--accent); border-radius: 99px; min-width: 2px; }
.meter-fill.hot { background: var(--warn); }
.meter-fill.full { background: var(--danger); }
.meter-unlimited { height: 10px; border-radius: 99px; background: repeating-linear-gradient(135deg, var(--meter-track) 0 6px, transparent 6px 12px); }

.plan { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 1.5rem; align-items: start; }
@media (max-width: 820px) { .plan { grid-template-columns: minmax(0, 1fr); } }
.plan-name { font-size: 2rem; font-weight: 600; letter-spacing: -0.02em; }
.limits { display: grid; grid-template-columns: auto 1fr; gap: 0.3rem 1rem; margin: 0.8rem 0 0; font-size: 0.92rem; }
.limits dt { color: var(--ink-2); }
.limits dd { margin: 0; font-variant-numeric: tabular-nums; font-weight: 500; }

/* ---------------------------------------------------------------- API keys */
.keys { display: grid; gap: 0.75rem; }
.key { background: var(--panel); border: 1px solid var(--rule); border-radius: 10px; padding: 0.95rem 1.1rem; display: grid; gap: 0.6rem; }
.key.disabled { opacity: 0.62; }
.key-top { display: flex; justify-content: space-between; align-items: center; gap: 0.75rem; flex-wrap: wrap; }
.key-name { font-weight: 600; display: flex; gap: 0.5rem; align-items: center; }
.key-secret { display: flex; align-items: stretch; border: 1px solid var(--rule-strong); border-radius: 8px; overflow: hidden; background: var(--code-bg); }
.key-secret code { flex: 1; background: none; padding: 0.55rem 0.75rem; font-size: 0.92rem; word-break: break-all; user-select: all; }
.key-secret button { border: 0; border-left: 1px solid var(--rule-strong); background: var(--panel); color: var(--ink); font: inherit; font-size: 0.85rem; padding: 0 0.9rem; cursor: pointer; }
.key-secret button:hover { color: var(--accent); }
.key-meta { display: flex; gap: 1.25rem; flex-wrap: wrap; font-size: 0.84rem; color: var(--ink-2); }
.key-actions { display: flex; gap: 0.4rem; flex-wrap: wrap; align-items: center; }
.key-actions details summary { list-style: none; cursor: pointer; }
.key-actions details summary::-webkit-details-marker { display: none; }
.key-actions details[open] { flex-basis: 100%; }
.key-actions details form { margin-top: 0.5rem; }

/* ---------------------------------------------------------------- charts */
.chart-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 1rem; }
@media (max-width: 900px) { .chart-grid { grid-template-columns: minmax(0, 1fr); } }
.chart-panel h3 { margin-bottom: 0.15rem; }
.chart-box { position: relative; height: 260px; margin-top: 0.75rem; }
.chart-box.short { height: 200px; }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1rem; }
.segmented { display: inline-flex; border: 1px solid var(--rule-strong); border-radius: 8px; overflow: hidden; background: var(--panel); }
.segmented button { border: 0; background: none; font: inherit; font-size: 0.88rem; padding: 0.38rem 0.8rem; color: var(--ink-2); cursor: pointer; }
.segmented button + button { border-left: 1px solid var(--rule); }
.segmented button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); font-weight: 600; }
.live { font-size: 0.84rem; color: var(--ink-2); display: inline-flex; gap: 0.4rem; align-items: center; }
.live .pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
@media (prefers-reduced-motion: no-preference) { .live .pulse { animation: pulse 2s ease-in-out infinite; } }
@keyframes pulse { 50% { opacity: 0.25; } }

/* ---------------------------------------------------------------- auth */
.auth { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.auth-side { background: var(--panel); border-right: 1px solid var(--rule); padding: 3rem clamp(16px, 5vw, 4rem); display: flex; flex-direction: column; justify-content: space-between; gap: 2rem; }
.auth-side pre { font-size: 0.8rem; margin: 0; }
.auth-form { padding: 3rem clamp(16px, 5vw, 4rem); display: flex; align-items: center; }
.auth-form form { width: 100%; max-width: 380px; }
.auth-form h1 { margin-bottom: 0.4rem; }
.auth-form .btn-primary { width: 100%; justify-content: center; padding: 0.6rem; margin-top: 0.4rem; }
.tagline { font-size: 1.6rem; font-weight: 600; letter-spacing: -0.02em; line-height: 1.25; max-width: 22ch; }
@media (max-width: 820px) { .auth { grid-template-columns: minmax(0, 1fr); } .auth-side { border-right: 0; border-bottom: 1px solid var(--rule); padding: 1.5rem 16px; } .auth-side pre { display: none; } .auth-form { padding: 2rem 16px; } }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; }
.form-narrow { max-width: 560px; }
.sep { border: 0; border-top: 1px solid var(--rule); margin: 2rem 0; }
.btn:disabled, .btn[disabled] { opacity: 0.45; cursor: not-allowed; }
td .badge { margin-left: 0.3rem; }

/* ---------------------------------------------------------------- playground */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.pg-account { display: grid; gap: 0.3rem; min-width: 220px; }
.pg-account label { margin: 0; font-weight: 400; }
.pg-search { padding: 0; margin-bottom: 1.75rem; }
.pg-tabs { display: flex; gap: 1.25rem; padding: 0 1.25rem; border-bottom: 1px solid var(--rule); }
.pg-tabs button, .pg-views button { border: 0; background: none; font: inherit; color: var(--ink-2); cursor: pointer;
  padding: 0.8rem 0 0.7rem; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.pg-tabs button:hover, .pg-views button:hover { color: var(--ink); }
.pg-tabs button[aria-selected="true"], .pg-views button[aria-selected="true"] { color: var(--ink); font-weight: 600; border-bottom-color: var(--accent); }
.pg-bar { display: flex; gap: 0.6rem; padding: 1.1rem 1.25rem 0.9rem; flex-wrap: wrap; }
.pg-input { flex: 1 1 280px; display: flex; align-items: center; gap: 0.6rem; border: 1px solid var(--rule-strong); border-radius: 10px;
  padding: 0 0.9rem; background: var(--surface); color: var(--ink-3); }
.pg-input:focus-within { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
.pg-input input { border: 0; outline: 0; background: none; padding: 0.75rem 0; font-size: 1.05rem; color: var(--ink); }
.pg-input input:focus { outline: 0; }
.pg-go { padding: 0.7rem 1.4rem; font-size: 1rem; }
.pg-options, .pg-range, .pg-more-body { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.75rem 1rem; padding: 0 1.25rem; }
.pg-range { padding-top: 0.75rem; }
.pg-opt label { font-size: 0.8rem; color: var(--ink-2); font-weight: 500; margin-bottom: 0.2rem; }
.pg-opt select, .pg-opt input { padding-top: 0.4rem; padding-bottom: 0.4rem; }
.pg-more { margin-top: 0.9rem; border-top: 1px solid var(--rule); }
.pg-more summary { cursor: pointer; padding: 0.7rem 1.25rem; color: var(--ink-2); font-size: 0.9rem; }
.pg-more summary:hover { color: var(--ink); }
.pg-more-body { padding-bottom: 1.1rem; align-items: start; }
.pg-checks { border: 0; margin: 0; padding: 0; display: grid; gap: 0.25rem; }
.pg-checks legend { font-size: 0.8rem; color: var(--ink-2); font-weight: 500; padding: 0; margin-bottom: 0.3rem; }
.pg-checks .check { font-size: 0.92rem; margin: 0; }
.pg-search > .pg-options:last-child { padding-bottom: 1.1rem; }

.pg-out[aria-busy="true"] #pg-result, .pg-out[aria-busy="true"] .pg-empty { opacity: 0.45; transition: opacity 0.2s; }
.pg-empty { border: 1px dashed var(--rule-strong); border-radius: 10px; padding: 2rem 1.25rem; text-align: center; color: var(--ink-2); }
.pg-empty p { margin: 0 0 0.9rem; }
.pg-examples { display: flex; gap: 0.5rem; justify-content: center; flex-wrap: wrap; }
.pg-summary { display: flex; gap: 0.4rem 1rem; align-items: center; flex-wrap: wrap; color: var(--ink-2); font-size: 0.9rem;
  font-variant-numeric: tabular-nums; margin-bottom: 0.4rem; }
.pg-pill { font-weight: 600; font-size: 0.84rem; padding: 0.12rem 0.6rem; border-radius: 99px; }
.pg-pill.ok { background: var(--accent-soft); color: var(--accent); }
.pg-pill.bad { background: var(--danger-soft); color: var(--danger); }
.pg-views { display: flex; gap: 1.25rem; box-shadow: inset 0 -1px 0 var(--rule); margin-bottom: 1rem; overflow-x: auto; overflow-y: hidden; }
.pg-views button { margin-bottom: 0; flex: none; }
.pg-pane-head { display: flex; justify-content: space-between; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 0.5rem; }
.pg-code { margin: 0; max-height: 70vh; white-space: pre-wrap; word-break: break-word; }
.pg-section { margin: 1.5rem 0 0.4rem; }
.pg-note { color: var(--ink-2); margin: 0 0 0.75rem; }
.pg-list { list-style: none; margin: 0; padding: 0; }
.pg-list > li { padding: 0.95rem 0; border-bottom: 1px solid var(--rule); min-width: 0; }
.pg-list > li:first-child { padding-top: 0.25rem; }
.pg-meta { display: flex; gap: 0.2rem 0.7rem; flex-wrap: wrap; align-items: center; font-size: 0.82rem; color: var(--ink-3); }
.pg-meta img { border-radius: 4px; background: var(--panel); }
.pg-host { color: var(--ink-2); overflow-wrap: anywhere; }
.pg-title { display: inline-block; font-weight: 600; font-size: 1.06rem; margin-top: 0.15rem; text-decoration: none; }
.pg-title:hover { text-decoration: underline; }
.pg-desc { margin: 0.3rem 0 0; color: var(--ink-2); font-size: 0.93rem; max-width: 75ch; }
.pg-desc strong, .pg-snippets strong, .pg-infobox strong { color: var(--ink); }
.pg-snippets { margin: 0.4rem 0 0; padding-left: 1.1rem; font-size: 0.86rem; color: var(--ink-2); max-width: 75ch; }
.pg-infobox { background: var(--panel); border: 1px solid var(--rule); border-radius: 10px; padding: 0.9rem 1.1rem; margin-bottom: 0.75rem; }
.pg-infobox p { margin: 0.35rem 0 0; color: var(--ink-2); font-size: 0.92rem; }
.pg-error { border: 1px solid var(--danger); background: var(--danger-soft); border-radius: 10px; padding: 0.9rem 1.1rem; }
.pg-error strong { color: var(--danger); }
.pg-error p { margin: 0.3rem 0 0; }
.pg-error ul { margin: 0.5rem 0 0; padding-left: 1.1rem; font-family: var(--mono); font-size: 0.84rem; }
.pg-error.pg-quiet { border-color: var(--rule); background: var(--panel); color: var(--ink-2); }
@media (max-width: 600px) { .pg-go { flex: 1 1 100%; } .pg-options, .pg-more-body, .pg-range { grid-template-columns: 1fr 1fr; } .pg-account { min-width: 0; width: 100%; } }