/* Left sidebar, panels with a header bar. Light and dark: follows the system
   unless the page says data-theme="light" or "dark" (Advanced page). */
:root {
  --fg: #1f2430; --muted: #5d6675; --bg: #eef0f3; --surface: #fff; --field: #fff; --line: #d5d9e0; --head: #e4e8ee; --zebra: #f6f8fa;
  --accent: #1d6fd8; --accent-hover: #1859b0; --on-accent: #fff;
  --side: #232a35; --side-fg: #c6cdd9; --side-muted: #7d889a; --side-hover: #323b49; --side-active: #1d6fd8;
  --warn: #fff3cd; --warnline: #e0a100; --bad: #c62828; --ok: #dff3e4; --good: #1b7a3a;
  --code: #eceff3; --switch: #b8c0cc; --tick: #8a94a5; --scroll: #b9c0cc;
  --s0: #2457c5; --s1: #d9730d; --s2: #2f9e44; --s3: #9c36b5; --s4: #c92a2a; --s5: #0b7285; --s6: #862e9c; --s7: #5c940d; --s8: #a61e4d; --s9: #5f3dc4;
  --radius: 4px; --shadow: 0 1px 2px rgba(16, 24, 40, .06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --fg: #e4e8ee; --muted: #9aa4b5; --bg: #181c23; --surface: #212732; --field: #181c23; --line: #333b48; --head: #2a313d; --zebra: rgba(255, 255, 255, .03);
    --accent: #6ea8fe; --accent-hover: #8dbaff; --on-accent: #0d1b33;
    --side: #12151b; --side-fg: #c3cad6; --side-muted: #6c7688; --side-hover: #202631; --side-active: #6ea8fe;
    --warn: #3b341a; --warnline: #f0b429; --bad: #ff8a80; --ok: #1c3527; --good: #5fd38d;
    --code: #2c3441; --switch: #434d5e; --tick: #5b667a; --scroll: #3d4757;
    --s0: #8ba4ff; --s1: #ffa94d; --s2: #69db7c; --s3: #da77f2; --s4: #ff8787; --s5: #66d9e8; --s6: #e599f7; --s7: #c0eb75; --s8: #faa2c1; --s9: #b197fc;
    --shadow: none; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --fg: #e4e8ee; --muted: #9aa4b5; --bg: #181c23; --surface: #212732; --field: #181c23; --line: #333b48; --head: #2a313d; --zebra: rgba(255, 255, 255, .03);
  --accent: #6ea8fe; --accent-hover: #8dbaff; --on-accent: #0d1b33;
  --side: #12151b; --side-fg: #c3cad6; --side-muted: #6c7688; --side-hover: #202631; --side-active: #6ea8fe;
  --warn: #3b341a; --warnline: #f0b429; --bad: #ff8a80; --ok: #1c3527; --good: #5fd38d;
  --code: #2c3441; --switch: #434d5e; --tick: #5b667a; --scroll: #3d4757;
  --s0: #8ba4ff; --s1: #ffa94d; --s2: #69db7c; --s3: #da77f2; --s4: #ff8787; --s5: #66d9e8; --s6: #e599f7; --s7: #c0eb75; --s8: #faa2c1; --s9: #b197fc;
  --shadow: none; color-scheme: dark;
}
* { box-sizing: border-box; scrollbar-color: var(--scroll) transparent; scrollbar-width: thin; }
body { margin: 0; padding-left: 15rem; font: 14.5px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--fg); background: var(--bg); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-underline-offset: 2px; }

/* Sidebar */
header { position: fixed; z-index: 20; left: 0; top: 0; bottom: 0; width: 15rem; display: flex; flex-direction: column; gap: 1rem; padding: 1rem .6rem; background: var(--side); overflow-y: auto; }
header > strong { padding: .2rem .7rem; font-size: 1.1rem; font-weight: 700; color: #fff; }
nav { display: flex; flex-direction: column; gap: 1px; }
nav > a, nav .group a, nav button.link { display: block; width: 100%; padding: .38rem .7rem; border-radius: var(--radius); color: var(--side-fg); text-decoration: none; text-align: left; }
nav .group a { padding-left: 1.4rem; }
nav a:hover, nav button.link:hover { background: var(--side-hover); color: #fff; }
nav a[aria-current] { background: var(--side-active); color: var(--on-accent); }
nav .group { margin: .8rem 0 0; }
nav .group > span { display: block; padding: 0 .7rem .25rem; font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: var(--side-muted); }
nav form { margin-top: 1rem; }
nav button.link { background: none; border: 0; padding: .38rem .7rem; font-weight: 400; cursor: pointer; }

main { padding: 1.5rem clamp(1rem, 3vw, 3rem) 3rem; }
/* Pages of independent panels flow into up to three columns on wide screens */
.cols { columns: 38rem 3; column-gap: 1.5rem; }
.cols > section, .cols > fieldset, .cols > form > fieldset { break-inside: avoid; }
.cols > section.busy, .cols > section.pending { column-span: all; }
.menu-toggle { position: absolute; opacity: 0; pointer-events: none; }
.menu-button { display: none; }
h1 { font-size: 1.45rem; font-weight: 600; letter-spacing: -.01em; margin: .25rem 0 1.25rem; }
h2 { font-size: .95rem; font-weight: 600; margin: 0 0 .6rem; }
section { margin: 0 0 1.5rem; }
section.busy, section.pending { padding: .75rem 1rem; border-radius: var(--radius); background: var(--warn); }
.flash, .error { padding: .6rem .9rem; border-radius: var(--radius); margin: 0 0 1rem; }
.flash { background: var(--ok); }
.error { background: color-mix(in srgb, var(--bad) 12%, transparent); }
.error, .field-error { color: var(--bad); }
.field-error { font-size: .9em; }
.hint { color: var(--muted); font-size: .9em; margin: .25rem 0 .6rem; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: .3rem 1.25rem; }
dt { color: var(--muted); }
dd { margin: 0; overflow-wrap: anywhere; }

/* Panels: a header bar (the legend) over a padded body */
fieldset { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); margin: 0 0 1rem; padding: 0 0 1rem; min-width: 0; overflow: hidden; }
legend { float: left; width: 100%; margin: 0 0 1rem; padding: .6rem 1rem; font-size: .95rem; font-weight: 600; background: var(--head); border-bottom: 1px solid var(--line); }
legend ~ * { clear: both; }
/* A section as a panel (its h2 is the header bar), for pages made of sections */
section.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; padding: 0 0 1rem; }
section.panel > h2 { margin: 0 0 1rem; padding: .6rem 1rem; font-size: .95rem; font-weight: 600; background: var(--head); border-bottom: 1px solid var(--line); }
section.panel > :not(h2) { margin-left: 1rem; margin-right: 1rem; }
fieldset > :not(legend):not(input[type=hidden]) { margin-left: 1rem; margin-right: 1rem; }
fieldset > .scroll { margin-left: 0; margin-right: 0; padding: 0 1rem; overflow-x: auto; }

/* Fields: a caption above the input */
label { display: inline-flex; flex-direction: column; gap: .2rem; margin: 0 1rem .6rem 0; font-size: .85em; font-weight: 500; color: var(--muted); }
input, select, textarea, button { font: inherit; color: var(--fg); background: var(--field); border: 1px solid var(--line); border-radius: var(--radius); padding: .4rem .6rem; }
input:hover, select:hover, textarea:hover { border-color: color-mix(in srgb, var(--fg) 30%, var(--line)); }
input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 28%, transparent); }
input::placeholder, textarea::placeholder { color: color-mix(in srgb, var(--muted) 65%, transparent); }
textarea[rows="30"] { height: min(44rem, 65vh); }
textarea { width: 100%; font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 13px; }
.narrow { max-width: 24rem; display: flex; flex-direction: column; gap: .8rem; }
.narrow label { margin: 0; }

/* Ticks: a switch in front of its text; a plain box inside tables */
label:has(> input[type=checkbox]) { flex-direction: row; align-items: center; gap: .6rem; font-size: 1em; font-weight: 400; color: var(--fg); margin: 0 1.25rem .5rem 0; }
fieldset > label:has(> input[type=checkbox]), form > label:has(> input[type=checkbox]) { display: flex; }
input[type=checkbox] { appearance: none; flex: none; position: relative; width: 2.1rem; height: 1.2rem; padding: 0; margin: 0; border: 0; border-radius: 1rem; background: var(--switch); cursor: pointer; transition: background .15s; vertical-align: middle; }
input[type=checkbox]::after { content: ""; position: absolute; top: .15rem; left: .15rem; width: .9rem; height: .9rem; border-radius: 50%; background: #fff; box-shadow: 0 1px 2px rgba(0, 0, 0, .3); transition: transform .15s; }
input[type=checkbox]:checked { background: var(--accent); }
input[type=checkbox]:checked::after { transform: translateX(.9rem); }
td > input[type=checkbox], th > input[type=checkbox], p > label > input[type=checkbox] { width: 1.05rem; height: 1.05rem; border-radius: 3px; border: 1.5px solid var(--tick); background: var(--field); }
td > input[type=checkbox]::after, th > input[type=checkbox]::after, p > label > input[type=checkbox]::after { display: none; }
td > input[type=checkbox]:checked, th > input[type=checkbox]:checked, p > label > input[type=checkbox]:checked { border-color: var(--accent); background: var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 8.5l3 3 6-6.5' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 90% no-repeat; }
td:has(> input[type=checkbox]) { text-align: center; }

/* Buttons */
button { background: var(--accent); color: var(--on-accent); border-color: var(--accent); cursor: pointer; font-weight: 600; padding: .42rem 1.05rem; }
button:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
button.secondary { background: var(--surface); color: var(--fg); border-color: var(--line); }
button.secondary:hover { background: var(--zebra); border-color: var(--accent); }
button.link { background: none; border: 0; padding: 0; color: var(--accent); font-weight: 400; text-decoration: underline; }
button.link:hover { background: none; color: var(--accent-hover); }
.default { position: absolute; left: -9999px; }
.actions { display: flex; gap: .75rem; flex-wrap: wrap; align-items: center; }

/* Tables */
table { border-collapse: collapse; }
th { text-align: left; font-size: .82rem; font-weight: 600; color: var(--muted); padding: 0 .45rem .35rem; white-space: nowrap; border-bottom: 1px solid var(--line); }
td { padding: .3rem .45rem; }
table tr:nth-child(even) td { background: var(--zebra); }
pre.log { background: var(--code); padding: .85rem 1rem; border-radius: var(--radius); overflow-x: auto; font-size: 12.5px; max-height: 30rem; }
code { font-size: .88em; overflow-wrap: anywhere; background: var(--code); padding: .1em .35em; border-radius: 3px; }
pre code { background: none; padding: 0; }
.muted { color: var(--muted); }
.bad { color: var(--bad); }
.ok { color: var(--good); }

body.bare { padding-left: 0; }
.bare header { position: static; width: auto; flex-direction: row; background: none; padding: 1rem 1.25rem; }
.bare header > strong { color: var(--fg); }
.bare main { margin: 0 auto; max-width: 30rem; }

@media (max-width: 50rem) {
  body { padding-left: 0; }
  header { position: sticky; top: 0; bottom: auto; width: auto; flex-direction: row; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .25rem 1rem; padding: .5rem .75rem; max-height: 100vh; }
  .menu-button { display: inline-block; margin: 0; padding: .3rem .85rem; border: 1px solid var(--side-muted); border-radius: var(--radius); color: var(--side-fg); font-size: .9rem; font-weight: 500; cursor: pointer; }
  header nav { display: none; width: 100%; max-height: calc(100vh - 4rem); overflow-y: auto; }
  .menu-toggle:checked ~ nav { display: flex; }
  .menu-toggle:focus-visible ~ .menu-button { box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 40%, transparent); }
  main { padding: .75rem .6rem 2rem; }
  h1 { font-size: 1.25rem; margin-bottom: .75rem; }
  fieldset > :not(legend):not(input[type=hidden]), section.panel > :not(h2) { margin-left: .75rem; margin-right: .75rem; }
  fieldset > .scroll { padding: 0 .75rem; }
  .cols { columns: auto; }
}
.ranges { display: flex; gap: .25rem; margin: 0 0 1rem; }
.ranges a { padding: .25rem .8rem; border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: var(--fg); background: var(--surface); }
.ranges a:hover { border-color: var(--accent); color: var(--accent); }
.ranges a.active { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); gap: 1rem; margin: 0 0 1.25rem; }
.card { background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: .85rem 1.1rem; margin: 0; }
.card.up { border-top-color: var(--good); }
.card.degraded { border-top-color: var(--warnline); }
.card.down { border-top-color: var(--bad); }
.card .state { font-weight: 600; margin: 0 0 .5rem; }
.card dl { margin: 0; font-size: .92em; }
.events { list-style: none; margin: 0; padding: 0; font-size: .9em; }
.events li span:first-child { display: inline-block; width: 2.5rem; font-weight: 600; }
.scroll { overflow-x: auto; min-width: 0; }
.leases td, .leases th { padding: .2rem .75rem .2rem 0; white-space: nowrap; }
.charts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 30rem), 1fr)); gap: 1rem; margin: 0 0 1.5rem; }
.chart { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: .65rem .9rem; min-width: 0; }
.chart figcaption { display: flex; flex-wrap: wrap; gap: .25rem 1rem; justify-content: space-between; font-size: .9em; }
.legend { display: flex; flex-wrap: wrap; gap: .1rem .9rem; }
.key::before { content: ""; display: inline-block; width: .7rem; height: .2rem; margin: 0 .3rem .2rem 0; background: currentColor; vertical-align: middle; }
.key b { font-weight: 500; color: var(--fg); }
.chart svg { width: 100%; height: auto; display: block; overflow: visible; }
.chart .grid { stroke: var(--line); stroke-width: 1; }
.chart .lab { fill: var(--muted); font-size: 11px; }
.chart .line { fill: none; stroke-width: 1.6; stroke-linejoin: round; stroke-linecap: round; }
.chart .hover { fill: transparent; }
.chart .hover:hover { fill: color-mix(in srgb, var(--fg) 8%, transparent); }
.s0 { color: var(--s0); stroke: var(--s0); } .s1 { color: var(--s1); stroke: var(--s1); } .s2 { color: var(--s2); stroke: var(--s2); }
.s3 { color: var(--s3); stroke: var(--s3); } .s4 { color: var(--s4); stroke: var(--s4); }
.s5 { color: var(--s5); stroke: var(--s5); } .s6 { color: var(--s6); stroke: var(--s6); } .s7 { color: var(--s7); stroke: var(--s7); } .s8 { color: var(--s8); stroke: var(--s8); } .s9 { color: var(--s9); stroke: var(--s9); }

/* WireGuard */
.qr svg { width: 14rem; height: 14rem; background: #fff; padding: .5rem; }
pre { overflow-x: auto; white-space: pre-wrap; word-break: break-all; }
form.inline { margin-top: 0.5rem; }
details { margin: 0.5rem 0; }