/* Theme variables. Light by default, OS preference via @media, manual
   override via `<html data-theme="light|dark">` (takes precedence). */
:root {
  color-scheme: light dark;
  --bg: #fff;
  --text: #222;
  --text-muted: #555;
  --text-dim: #777;
  --link: #2a6fb0;
  --surface: #fff;
  --surface-alt: #fafafa;
  --surface-hover: #f0f0f0;
  --status-bg: #f4f4f4;
  --border: #ccc;
  --border-strong: #999;
  --border-input: #bbb;
  --border-subtle: #eee;
  --danger: #a01010;
  --danger-border: #b04040;
  --danger-bg: #fbe8e8;
  --ok: #0a7a0a;
  --warn: #b8860b;
  --err: #a00;
  --invite-bg: #f0f8ff;
  --invite-border: #b8d4ec;
  --tag-bg: #eee;
  --tag-text: #555;
  --tag-locked-bg: #fff4e0;
  --tag-locked-text: #8a5a00;
  --tag-locked-border: #e0b060;
  --banner-bg: #fff4e0;
  --banner-border: #e0b060;
  --banner-text: #6a4600;
  --banner-strong: #a06000;
  --banner-danger-bg: #fde8e8;
  --banner-danger-border: #c03030;
  --banner-danger-text: #70101a;
  --banner-danger-strong: #a01010;
  --banner-info-bg: #eaf3fb;
  --banner-info-border: #9cc5e6;
  --banner-info-text: #14466f;
  --banner-info-strong: #1a6aac;
  --pct-track: #eee;
  --pct-fill: #4a90e2;
  --pct-warn: #d0a020;
  --pct-err: #c03030;
  --diff-bg: #f8f8f8;
  --diff-border: #e0e0e0;
  --diff-add-bg: #e6ffed;
  --diff-add-text: #1a6f2a;
  --diff-del-bg: #ffeef0;
  --diff-del-text: #a11;
  --diff-same-text: #666;
  --details-marker: #888;
}

/* Dark-mode palette. Applied when either the OS requests dark (and the
   user hasn't explicitly set data-theme="light") OR the user explicitly
   set data-theme="dark". */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121417;
    --text: #e6e8eb;
    --text-muted: #9aa3b0;
    --text-dim: #6b7280;
    --link: #78a9ff;
    --surface: #1a1d23;
    --surface-alt: #222630;
    --surface-hover: #2a2f3b;
    --status-bg: #0c0e12;
    --border: #2e3340;
    --border-strong: #3d4350;
    --border-input: #3d4350;
    --border-subtle: #2a2f3b;
    --danger: #ff8080;
    --danger-border: #a04040;
    --danger-bg: #3a1a1a;
    --ok: #5ece66;
    --warn: #e0a020;
    --err: #ff6b6b;
    --invite-bg: #1a2c3e;
    --invite-border: #3e6a8a;
    --tag-bg: #2a2f3b;
    --tag-text: #9aa3b0;
    --tag-locked-bg: #3a2a00;
    --tag-locked-text: #e0c080;
    --tag-locked-border: #8a6a00;
    --banner-bg: #3a2a00;
    --banner-border: #8a6a00;
    --banner-text: #e0c080;
    --banner-strong: #f0d080;
    --banner-danger-bg: #3a1a1a;
    --banner-danger-border: #a03030;
    --banner-danger-text: #ff9090;
    --banner-danger-strong: #ffa0a0;
    --banner-info-bg: #152a3e;
    --banner-info-border: #5080b0;
    --banner-info-text: #a0d0f0;
    --banner-info-strong: #b0e0ff;
    --pct-track: #2a2f3b;
    --pct-fill: #5a9fdd;
    --pct-warn: #e0a020;
    --pct-err: #ff6b6b;
    --diff-bg: #1a1d23;
    --diff-border: #2e3340;
    --diff-add-bg: #0a3014;
    --diff-add-text: #5ece66;
    --diff-del-bg: #3a1014;
    --diff-del-text: #ff8888;
    --diff-same-text: #9aa3b0;
    --details-marker: #9aa3b0;
  }
}
:root[data-theme="dark"] {
  --bg: #121417;
  --text: #e6e8eb;
  --text-muted: #9aa3b0;
  --text-dim: #6b7280;
  --link: #78a9ff;
  --surface: #1a1d23;
  --surface-alt: #222630;
  --surface-hover: #2a2f3b;
  --status-bg: #0c0e12;
  --border: #2e3340;
  --border-strong: #3d4350;
  --border-input: #3d4350;
  --border-subtle: #2a2f3b;
  --danger: #ff8080;
  --danger-border: #a04040;
  --danger-bg: #3a1a1a;
  --ok: #5ece66;
  --warn: #e0a020;
  --err: #ff6b6b;
  --invite-bg: #1a2c3e;
  --invite-border: #3e6a8a;
  --tag-bg: #2a2f3b;
  --tag-text: #9aa3b0;
  --tag-locked-bg: #3a2a00;
  --tag-locked-text: #e0c080;
  --tag-locked-border: #8a6a00;
  --banner-bg: #3a2a00;
  --banner-border: #8a6a00;
  --banner-text: #e0c080;
  --banner-strong: #f0d080;
  --banner-danger-bg: #3a1a1a;
  --banner-danger-border: #a03030;
  --banner-danger-text: #ff9090;
  --banner-danger-strong: #ffa0a0;
  --banner-info-bg: #152a3e;
  --banner-info-border: #5080b0;
  --banner-info-text: #a0d0f0;
  --banner-info-strong: #b0e0ff;
  --pct-track: #2a2f3b;
  --pct-fill: #5a9fdd;
  --pct-warn: #e0a020;
  --pct-err: #ff6b6b;
  --diff-bg: #1a1d23;
  --diff-border: #2e3340;
  --diff-add-bg: #0a3014;
  --diff-add-text: #5ece66;
  --diff-del-bg: #3a1014;
  --diff-del-text: #ff8888;
  --diff-same-text: #9aa3b0;
  --details-marker: #9aa3b0;
}

body { font-family: system-ui, Arial, sans-serif; margin: 2rem; max-width: 60rem; background: var(--bg); color: var(--text); }
h1 { margin-top: 0; }
h2 { margin-top: 0; font-size: 1.1rem; display: flex; justify-content: space-between; align-items: center; gap: 0.5rem; }
.card { border: 1px solid var(--border); border-radius: 8px; padding: 1rem; margin-bottom: 1rem; background: var(--surface); }
details.card > summary { list-style: none; cursor: pointer; }
details.card > summary h2 { margin: 0; }
details.card > summary::-webkit-details-marker { display: none; }
details.card > summary::after { content: "▸"; font-size: 0.8rem; color: var(--details-marker); margin-left: auto; }
details.card[open] > summary::after { content: "▾"; }
button { padding: 0.55rem 0.9rem; margin-right: 0.5rem; cursor: pointer; border: 1px solid var(--border-strong); border-radius: 4px; background: var(--surface-alt); color: var(--text); font: inherit; }
button:hover:not(:disabled) { background: var(--surface-hover); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.danger { border-color: var(--danger-border); color: var(--danger); }
button.danger:hover:not(:disabled) { background: var(--danger-bg); }
button.link { border: none; background: none; padding: 0; color: var(--link); text-decoration: underline; cursor: pointer; font: inherit; }
input[type=file], input[type=text], input[type=number], input[type=password] { padding: 0.4rem; font: inherit; box-sizing: border-box; border: 1px solid var(--border-input); border-radius: 4px; background: var(--surface); color: var(--text); }
input[type=text], input[type=number], input[type=password], select { width: 100%; }
select { background: var(--surface); color: var(--text); border: 1px solid var(--border-input); border-radius: 4px; padding: 0.4rem; }
input[type=checkbox] { width: auto; margin-right: 0.4rem; }
textarea { width: 100%; min-height: 14rem; font-family: ui-monospace, monospace; font-size: 0.85rem; padding: 0.5rem; box-sizing: border-box; background: var(--surface); color: var(--text); border: 1px solid var(--border-input); border-radius: 4px; }
#status { white-space: pre-wrap; background: var(--status-bg); color: var(--text); padding: 0.8rem; border-radius: 6px; min-height: 3rem; font-family: ui-monospace, monospace; font-size: 0.85rem; max-height: 20rem; overflow: auto; }
.row { margin-top: 0.6rem; }
.muted { color: var(--text-muted); font-size: 0.9rem; }
.invite-code { font: 600 2rem ui-monospace, monospace; letter-spacing: 0.15em; padding: 0.6rem 1rem; background: var(--invite-bg); border: 1px solid var(--invite-border); border-radius: 6px; display: inline-block; color: var(--text); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 0.3rem 1rem; font-size: 0.9rem; }
.kv dt { color: var(--text-muted); }
.kv dd { margin: 0; font-family: ui-monospace, monospace; }
.hidden { display: none !important; }
.pill-ok { color: var(--ok); font-weight: 600; }
.pill-warn { color: var(--warn); font-weight: 600; }
.pill-err { color: var(--err); font-weight: 600; }
.tag { display: inline-block; padding: 0.1rem 0.5rem; background: var(--tag-bg); border-radius: 10px; font-size: 0.8rem; color: var(--tag-text); }
.tag.locked { background: var(--tag-locked-bg); color: var(--tag-locked-text); border: 1px solid var(--tag-locked-border); }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--border-subtle); vertical-align: middle; }
th { color: var(--text-muted); font-weight: 500; font-size: 0.85rem; background: var(--surface-alt); }
td.mono { font-family: ui-monospace, monospace; }
.reveal { display: inline-flex; align-items: center; gap: 0.35rem; font-family: ui-monospace, monospace; }
.reveal .mask-dots { letter-spacing: 0.1em; color: var(--text-dim); }
.reveal button.link { font-family: system-ui, sans-serif; font-size: 0.75rem; }
.admin-banner { background: var(--banner-bg); border: 1px solid var(--banner-border); color: var(--banner-text); border-radius: 6px; padding: 0.6rem 1rem; margin-bottom: 1rem; font-size: 0.9rem; }
.admin-banner strong { color: var(--banner-strong); }
.admin-banner.danger { background: var(--banner-danger-bg); border-color: var(--banner-danger-border); color: var(--banner-danger-text); }
.admin-banner.danger strong { color: var(--banner-danger-strong); }
.admin-banner.info   { background: var(--banner-info-bg); border-color: var(--banner-info-border); color: var(--banner-info-text); }
.admin-banner.info   strong { color: var(--banner-info-strong); }
.pct-bar { display: inline-block; width: 8rem; height: 0.6rem; background: var(--pct-track); border-radius: 3px; vertical-align: middle; overflow: hidden; }
.pct-bar > span { display: block; height: 100%; background: var(--pct-fill); }
.pct-bar.warn > span { background: var(--pct-warn); }
.pct-bar.err > span { background: var(--pct-err); }
.empty-note { color: var(--text-dim); font-style: italic; padding: 0.4rem 0.6rem; }
.form-grid { display: grid; grid-template-columns: max-content 1fr; gap: 0.5rem 1rem; align-items: center; }
.form-grid > label { color: var(--text-muted); }
.form-grid > .field { display: flex; gap: 0.5rem; align-items: center; }
.inline-row { display: flex; gap: 0.5rem; align-items: center; }
.warn-inline { color: var(--banner-text); background: var(--banner-bg); border-left: 3px solid var(--banner-border); padding: 0.3rem 0.6rem; font-size: 0.85rem; border-radius: 3px; }
.diff { font-family: ui-monospace, monospace; font-size: 0.85rem; background: var(--diff-bg); border: 1px solid var(--diff-border); border-radius: 4px; padding: 0.5rem; max-height: 20rem; overflow: auto; white-space: pre; color: var(--text); }
.diff .add { background: var(--diff-add-bg); color: var(--diff-add-text); display: block; }
.diff .del { background: var(--diff-del-bg); color: var(--diff-del-text); display: block; }
.diff .same { color: var(--diff-same-text); display: block; }
.header-row { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 1rem; margin-bottom: 1rem; }
.header-row h1 { margin: 0; }
.auth-box { display: flex; gap: 0.5rem; align-items: center; font-size: 0.9rem; }
.auth-box .muted { color: var(--text-dim); }
.auth-box.authed .muted { color: var(--ok); }
.admin-only { }  /* marker class; actual hide is via .hidden toggled by JS */
.inline-editor { margin-top: 1rem; padding: 1rem; border: 1px dashed var(--border); border-radius: 6px; background: var(--surface-alt); }
.inline-editor-head { margin: 0 0 0.6rem 0; font-size: 1rem; display: flex; gap: 0.5rem; align-items: center; }
/* Theme toggle button — compact, no border, just the icon. */
.theme-toggle { border: none; background: none; padding: 0 0.4rem; font-size: 1rem; cursor: pointer; color: var(--text-muted); margin-right: 0; }
.theme-toggle:hover:not(:disabled) { background: var(--surface-hover); border-radius: 4px; }
