/* AgentOS theme: Nord. Dark-first, light under prefers-color-scheme: light.
   Every screen, and every module UI (link /ui/theme.css), builds only from these tokens and components. */

@font-face { font-family: "Source Sans 3"; src: url("/ui/vendor/fonts/source-sans-3-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Source Sans 3"; src: url("/ui/vendor/fonts/source-sans-3-600.woff2") format("woff2"); font-weight: 500 600; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/ui/vendor/fonts/jetbrains-mono-400.woff2") format("woff2"); font-weight: 400 500; font-display: swap; }

:root {
  --font-ui: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --radius: 3px;
  --space: 4px;

  /* Polar Night (dark, default) */
  --bg: #2e3440; --side: #272c36; --surface: #2e3440; --raised: #3b4252; --line: #3b4252;
  --fg: #eceff4; --muted: #c0c8d6; --faint: #8590a4;
  --accent: #88c0d0; --accent-fg: #242933; --active: #3b4252;
  --ok: #a3be8c; --warn: #ebcb8b; --err: #d27a83;
  --term-bg: #242933; --term-fg: #d8dee9;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #eceff4; --side: #e5e9f0; --surface: #f4f6f9; --raised: #e5e9f0; --line: #d8dee9;
    --fg: #2e3440; --muted: #4c566a; --faint: #6d7689;
    --accent: #5e81ac; --accent-fg: #ffffff; --active: #d8dee9;
    --ok: #4f7f3c; --warn: #9a7420; --err: #b04c56;
    --term-bg: #2e3440; --term-fg: #d8dee9;
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #eceff4; --side: #e5e9f0; --surface: #f4f6f9; --raised: #e5e9f0; --line: #d8dee9;
  --fg: #2e3440; --muted: #4c566a; --faint: #6d7689;
  --accent: #5e81ac; --accent-fg: #ffffff; --active: #d8dee9;
  --ok: #4f7f3c; --warn: #9a7420; --err: #b04c56;
  --term-bg: #2e3440; --term-fg: #d8dee9;
  color-scheme: light;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }   /* component display rules must not un-hide elements */
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font-family: var(--font-ui); font-size: 14px; line-height: 1.5; }
a { color: var(--accent); }
code, pre, .mono { font-family: var(--font-mono); font-size: 0.92em; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- App layout: sidebar + main ---------- */
.app { display: grid; grid-template-columns: 212px minmax(0, 1fr); height: 100%; }
.side { background: var(--side); border-right: 1px solid var(--line); display: flex; flex-direction: column; gap: 18px; padding: 14px 10px; min-height: 0; overflow-y: auto; }
.brand { display: flex; align-items: center; gap: 8px; padding: 2px 8px; }
.brand b { font-weight: 600; font-size: 15px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); flex: none; }
.nav { display: grid; gap: 1px; }
.nav a { display: flex; align-items: center; gap: 9px; padding: 6px 8px; border-radius: var(--radius); color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--fg); }
.nav a.active { background: var(--active); color: var(--fg); font-weight: 500; }
.nav svg { width: 16px; height: 16px; flex: none; stroke: currentColor; fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.nav .count { margin-left: auto; font-size: 11px; color: var(--faint); font-variant-numeric: tabular-nums; }
.group-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--faint); padding: 0 8px 4px; }
.side-foot { margin-top: auto; display: grid; gap: 8px; padding: 10px 8px 0; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.side-foot code { font-size: 11px; color: var(--faint); overflow-wrap: anywhere; }
.side-foot .row { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.linkbtn { font: inherit; background: none; border: 0; padding: 0; color: var(--muted); cursor: pointer; text-decoration: underline; }

.main { display: flex; flex-direction: column; min-width: 0; min-height: 0; background: var(--surface); }
.page-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; padding: 16px 24px; border-bottom: 1px solid var(--line); }
.page-head h1 { margin: 0; font-size: 17px; font-weight: 600; }
.page-head p { margin: 0; color: var(--muted); font-size: 13px; }
.page-head .actions { margin-left: auto; display: flex; gap: 8px; }
.page-body { flex: 1; min-height: 0; overflow: auto; }
.pad { padding: 20px 24px; }

/* ---------- Components ---------- */
.btn { font: inherit; font-size: 13px; font-weight: 500; padding: 6px 12px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); color: var(--fg); cursor: pointer; white-space: nowrap; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.btn:hover { background: var(--raised); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.btn-primary:hover { background: var(--accent); filter: brightness(1.08); }
.btn-danger { color: var(--err); }
.btn-ghost { border-color: transparent; background: transparent; color: var(--muted); padding-inline: 8px; }
.btn:disabled { opacity: 0.55; cursor: default; }

.field { display: grid; gap: 6px; }
.field label { font-size: 12.5px; font-weight: 500; color: var(--muted); }
.input, .field input, .field select { font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg); color: var(--fg); min-width: 0; }
.input:focus, .field input:focus, .field select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
.input.code, .field input.code { font-family: var(--font-mono); letter-spacing: 0.3em; }

.table { width: 100%; border-collapse: collapse; }
.table th { text-align: left; font-weight: 500; font-size: 12px; color: var(--faint); padding: 10px 12px; border-bottom: 1px solid var(--line); }
.table td { padding: 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table th:first-child, .table td:first-child { padding-left: 24px; }
.table th:last-child, .table td:last-child { padding-right: 16px; text-align: right; }
.table tr:hover td { background: var(--raised); }
.table-wrap { overflow-x: auto; }

.seg { display: inline-flex; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.seg button { font: inherit; font-size: 12px; padding: 3px 9px; border: 0; background: transparent; color: var(--muted); cursor: pointer; flex: 1; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button:hover { color: var(--fg); }
.seg button[aria-pressed="true"] { background: var(--active); color: var(--fg); font-weight: 500; }

.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; white-space: nowrap; }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.badge.ok { color: var(--ok); } .badge.off { color: var(--faint); } .badge.warn { color: var(--warn); } .badge.err { color: var(--err); }

.tabs { display: flex; align-items: stretch; gap: 2px; padding: 0 16px; border-bottom: 1px solid var(--line); overflow-x: auto; }
.tab { display: flex; align-items: center; gap: 8px; padding: 10px 12px; font: inherit; font-size: 13px; color: var(--muted); background: none; border: 0; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; cursor: pointer; }
.tab.active { color: var(--fg); border-bottom-color: var(--accent); font-weight: 500; }
.tab .kind { font-family: var(--font-mono); font-size: 11px; color: var(--faint); }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: calc(var(--radius) + 2px); padding: 24px; }
.empty { display: grid; place-items: center; text-align: center; gap: 8px; padding: 64px 24px; color: var(--muted); }
.empty h2 { margin: 0; font-size: 15px; font-weight: 600; color: var(--fg); }
.empty p { margin: 0; max-width: 52ch; }
.notice { padding: 10px 12px; border: 1px solid var(--line); border-left: 3px solid var(--warn); border-radius: var(--radius); background: var(--raised); font-size: 13px; }
.notice.err { border-left-color: var(--err); }
.muted { color: var(--muted); } .faint { color: var(--faint); }

dialog { border: 1px solid var(--line); border-radius: calc(var(--radius) + 2px); background: var(--surface); color: var(--fg); padding: 20px; box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35); max-width: min(440px, calc(100vw - 32px)); }
dialog::backdrop { background: rgba(20, 24, 31, 0.55); }

/* ---------- Terminal ---------- */
.term-wrap { flex: 1; min-height: 0; background: var(--term-bg); padding: 8px 4px 4px 12px; }
.term-wrap .xterm { height: 100%; }
.statusbar { display: flex; flex-wrap: wrap; gap: 4px 18px; padding: 7px 18px; font-size: 12px; color: var(--muted); border-top: 1px solid var(--line); background: var(--side); }

/* ---------- Auth pages ---------- */
.auth { min-height: 100%; display: grid; place-items: center; padding: 24px 16px; background: var(--side); }
.auth .card { width: min(380px, 100%); display: grid; gap: 16px; }
.auth h1 { margin: 0; font-size: 19px; font-weight: 600; }
.auth .host { font-family: var(--font-mono); font-size: 12px; color: var(--faint); margin-top: 2px; display: flex; align-items: center; gap: 7px; }
.auth .hint { font-size: 12px; color: var(--faint); margin: 0; }
.auth .qr { background: #ffffff; padding: 10px; border-radius: var(--radius); justify-self: center; line-height: 0; }
.auth .qr img { width: 200px; height: 200px; image-rendering: pixelated; }

/* ---------- Narrow screens ---------- */
@media (max-width: 720px) {
  .app { grid-template-columns: 1fr; grid-template-rows: auto minmax(0, 1fr); }
  .side { flex-direction: row; flex-wrap: wrap; align-items: center; gap: 8px; border-right: 0; border-bottom: 1px solid var(--line); padding: 8px 10px; overflow: visible; }
  .nav { display: flex; flex-wrap: wrap; }
  .nav .count, .group-label, .nav.mods, .side-foot { display: none; }
  .page-head { padding: 14px 16px; }
  .page-head .actions { margin-left: 0; }
}