/* lockfile-diff — own lightweight brand (NOT polyatic.css).
   Indigo accent + a padlock mark on a cool slate neutral; semver classes get
   their own hues. Light + dark via prefers-color-scheme, with a manual
   [data-theme] override toggle. */

:root {
  --accent: #6d5efc;
  --accent-ink: #5344e0;
  --accent-2: #23c8d6;

  --bg: #f5f6fb;
  --panel: #ffffff;
  --panel-2: #eef0f8;
  --ink: #141726;
  --ink-soft: #474d63;
  --ink-faint: #737a93;
  --border: #e0e3f0;
  --border-strong: #c6cbe0;
  --field: #ffffff;
  --shadow: 0 1px 2px rgba(20, 23, 38, .05), 0 6px 20px rgba(20, 23, 38, .06);

  --major: #d1293d;
  --major-bg: #fdecee;
  --minor: #b46a00;
  --minor-bg: #fcf2e0;
  --patch: #157a54;
  --patch-bg: #e4f6ee;
  --added: #2563c9;
  --added-bg: #e7effc;
  --removed: #5c6377;
  --removed-bg: #eceef4;
  --other: #6b4fd0;
  --other-bg: #eeeafb;

  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c0e15;
    --panel: #151824;
    --panel-2: #1c2030;
    --ink: #eef1fa;
    --ink-soft: #b7bed2;
    --ink-faint: #868ea6;
    --border: #29304200;
    --border: #293042;
    --border-strong: #3a4258;
    --field: #0f121b;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 26px rgba(0, 0, 0, .45);

    --major: #ff6b7d;
    --major-bg: #351720;
    --minor: #eaa640;
    --minor-bg: #33260f;
    --patch: #4fd39a;
    --patch-bg: #10291f;
    --added: #6ba6ff;
    --added-bg: #14233c;
    --removed: #9aa2ba;
    --removed-bg: #20242f;
    --other: #ad9cff;
    --other-bg: #201d3b;
  }
}

/* manual dark override (toggle) */
:root[data-theme="dark"] {
  --bg: #0c0e15;
  --panel: #151824;
  --panel-2: #1c2030;
  --ink: #eef1fa;
  --ink-soft: #b7bed2;
  --ink-faint: #868ea6;
  --border: #293042;
  --border-strong: #3a4258;
  --field: #0f121b;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 26px rgba(0, 0, 0, .45);
  --major: #ff6b7d;
  --major-bg: #351720;
  --minor: #eaa640;
  --minor-bg: #33260f;
  --patch: #4fd39a;
  --patch-bg: #10291f;
  --added: #6ba6ff;
  --added-bg: #14233c;
  --removed: #9aa2ba;
  --removed-bg: #20242f;
  --other: #ad9cff;
  --other-bg: #201d3b;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 20px 40px;
}

/* ---- header ---- */
header.top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 11px; min-width: 0; }
.brand > div:not(.logo) { min-width: 0; }
.logo {
  width: 36px; height: 36px; flex: 0 0 auto;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center;
  color: #fff;
  box-shadow: 0 2px 9px rgba(109, 94, 252, .38);
}
.logo svg { width: 20px; height: 20px; }
h1 { font-size: 1.3rem; margin: 0; letter-spacing: -.01em; font-family: var(--mono); }
h1 .accent { color: var(--accent); }
.subtitle { margin: 2px 0 0; color: var(--ink-soft); font-size: .82rem; overflow-wrap: anywhere; }

.head-right { display: flex; align-items: center; gap: 10px; }
.theme-btn {
  border: 1px solid var(--border-strong);
  background: var(--panel);
  color: var(--ink-soft);
  border-radius: 8px;
  padding: 7px 12px;
  font-size: .82rem;
  cursor: pointer;
  font-family: var(--sans);
}
.theme-btn:hover { color: var(--ink); border-color: var(--accent); }

.trust {
  display: inline-flex; align-items: center; gap: 7px;
  margin-top: 12px;
  padding: 7px 13px;
  background: var(--patch-bg);
  color: var(--patch);
  border: 1px solid color-mix(in srgb, var(--patch) 32%, transparent);
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
}
.trust svg { width: 15px; height: 15px; flex: 0 0 auto; }

/* ---- editors ---- */
.editors {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 14px;
}
.pane {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.pane-head {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 9px 13px;
  border-bottom: 1px solid var(--border);
}
.pane-head .label { font-weight: 700; font-size: .84rem; }
.pane-head .label small { display: block; color: var(--ink-faint); font-weight: 500; font-size: .72rem; }
.pane-head .dot { width: 8px; height: 8px; border-radius: 50%; flex: 0 0 auto; }
.pane.old .dot { background: var(--minor); }
.pane.new .dot { background: var(--accent); }
.pane-head .side { display: flex; align-items: center; gap: 8px; min-width: 0; }

/* auto-detected format badge */
.fmt {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: .68rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--panel-2);
  color: var(--ink-faint);
  white-space: nowrap;
}
.fmt[data-fmt="npm"]  { color: #c1272d; background: color-mix(in srgb, #c1272d 12%, transparent); border-color: color-mix(in srgb, #c1272d 34%, transparent); }
.fmt[data-fmt="pnpm"] { color: #b46a00; background: var(--minor-bg); border-color: color-mix(in srgb, var(--minor) 34%, transparent); }
.fmt[data-fmt="yarn"] { color: #2563c9; background: var(--added-bg); border-color: color-mix(in srgb, var(--added) 34%, transparent); }
.fmt[data-fmt="unknown"] { color: var(--major); background: var(--major-bg); border-color: color-mix(in srgb, var(--major) 34%, transparent); }

textarea {
  border: 0;
  background: var(--field);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.55;
  padding: 12px 13px;
  resize: vertical;
  width: 100%;
  height: 210px;
  border-radius: 0 0 12px 12px;
  outline: none;
  tab-size: 2;
}
textarea::placeholder { color: var(--ink-faint); }
textarea:focus { box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--accent) 45%, transparent); }

/* ---- optional package.json ---- */
.pkgbox {
  margin-top: 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.pkgbox summary {
  cursor: pointer;
  list-style: none;
  padding: 11px 14px;
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  font-size: .84rem;
}
.pkgbox summary::-webkit-details-marker { display: none; }
.pkgbox summary::before {
  content: "▸"; color: var(--accent); font-size: .8rem; transition: transform .15s;
}
.pkgbox[open] summary::before { transform: rotate(90deg); }
.pkg-title code { font-family: var(--mono); font-size: .8rem; color: var(--accent-ink); }
.pkg-hint {
  font-size: .72rem; color: var(--ink-faint);
  border: 1px solid var(--border); border-radius: 999px; padding: 2px 9px;
}
.pkgbox textarea {
  height: 120px; border-radius: 0; border-top: 1px solid var(--border);
}
.pkg-note {
  margin: 0; padding: 9px 14px 12px;
  font-size: .76rem; color: var(--ink-soft);
  border-top: 1px solid var(--border);
  background: var(--panel-2);
}

/* ---- toolbar ---- */
.toolbar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-top: 14px;
}
.summary { display: flex; gap: 7px; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: baseline; gap: 6px;
  padding: 5px 11px;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--ink-faint);
}
.chip b { font-size: .88rem; font-variant-numeric: tabular-nums; }
.chip.on.major { background: var(--major-bg); color: var(--major); border-color: color-mix(in srgb, var(--major) 30%, transparent); }
.chip.on.minor { background: var(--minor-bg); color: var(--minor); border-color: color-mix(in srgb, var(--minor) 30%, transparent); }
.chip.on.patch { background: var(--patch-bg); color: var(--patch); border-color: color-mix(in srgb, var(--patch) 30%, transparent); }
.chip.on.added { background: var(--added-bg); color: var(--added); border-color: color-mix(in srgb, var(--added) 30%, transparent); }
.chip.on.removed { background: var(--removed-bg); color: var(--removed); border-color: color-mix(in srgb, var(--removed) 40%, transparent); }
.chip.on.unchanged { color: var(--ink-soft); }

.spacer { flex: 1 1 auto; }
.btn {
  border: 1px solid var(--border-strong);
  background: var(--panel);
  color: var(--ink);
  border-radius: 9px;
  padding: 9px 14px;
  font-size: .84rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--sans);
}
.btn:hover { border-color: var(--accent); }
.btn.ghost { padding: 3px 10px; font-size: .8rem; }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), #8a4ff0);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 2px 10px rgba(109, 94, 252, .32);
}
.btn.primary:hover { filter: brightness(1.06); }
.btn.primary:disabled { opacity: .55; cursor: default; filter: none; }

/* ---- results ---- */
.result {
  margin-top: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.result-head {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  font-size: .92rem;
}
.result-body { padding: 8px 16px 16px; }

.state {
  padding: 26px 16px;
  text-align: center;
  color: var(--ink-soft);
}
.state.error {
  color: var(--major);
  background: var(--major-bg);
  border-radius: 10px;
  margin: 12px 0;
  font-family: var(--mono);
  font-size: .84rem;
  text-align: left;
  padding: 14px 16px;
  white-space: pre-wrap;
  word-break: break-word;
}
.state.ok { color: var(--patch); font-weight: 600; }

.group { margin: 16px 0 4px; }
.group:first-child { margin-top: 8px; }
.group-head {
  display: flex; align-items: center; gap: 9px;
  font-size: .8rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .04em;
  padding-bottom: 8px;
}
.group-head .sev-dot { width: 9px; height: 9px; border-radius: 50%; flex: 0 0 auto; }
.group-head .count {
  font-variant-numeric: tabular-nums;
  padding: 1px 8px; border-radius: 999px; font-size: .78rem;
  border: 1px solid currentColor;
}
.group.major  .group-head { color: var(--major); }  .group.major  .sev-dot { background: var(--major); }
.group.minor  .group-head { color: var(--minor); }  .group.minor  .sev-dot { background: var(--minor); }
.group.patch  .group-head { color: var(--patch); }  .group.patch  .sev-dot { background: var(--patch); }
.group.prerelease .group-head { color: var(--other); } .group.prerelease .sev-dot { background: var(--other); }
.group.unknown .group-head { color: var(--other); } .group.unknown .sev-dot { background: var(--other); }
.group.added  .group-head { color: var(--added); }  .group.added  .sev-dot { background: var(--added); }
.group.removed .group-head { color: var(--removed); } .group.removed .sev-dot { background: var(--removed); }

.rows { display: flex; flex-direction: column; gap: 7px; }
.row {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr) auto auto auto;
  align-items: center;
  gap: 12px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-radius: 8px;
  background: var(--panel-2);
  font-size: .87rem;
}
.group.major  .row { border-left-color: var(--major); }
.group.minor  .row { border-left-color: var(--minor); }
.group.patch  .row { border-left-color: var(--patch); }
.group.prerelease .row { border-left-color: var(--other); }
.group.unknown .row { border-left-color: var(--other); }
.group.added  .row { border-left-color: var(--added); }
.group.removed .row { border-left-color: var(--removed); }

.row .dir { font-size: .8rem; text-align: center; }
.row .dir.up { color: var(--major); }
.row .dir.down { color: var(--added); }
.group.added .row .dir { color: var(--added); font-weight: 700; }
.group.removed .row .dir { color: var(--removed); font-weight: 700; }

.row .name {
  font-family: var(--mono);
  font-size: .84rem;
  font-weight: 600;
  color: var(--ink);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.row .ver {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--mono); font-size: .8rem;
  white-space: nowrap;
}
.row .ver .v { color: var(--ink-soft); }
.row .ver .v.new { color: var(--ink); font-weight: 600; }
.row .ver .arrow { color: var(--ink-faint); }
.row .ver .v.single { color: var(--ink); }

.tag {
  font-family: var(--mono); font-size: .66rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .03em;
  padding: 2px 8px; border-radius: 999px; white-space: nowrap;
}
.tag.major  { color: var(--major);  background: var(--major-bg); }
.tag.minor  { color: var(--minor);  background: var(--minor-bg); }
.tag.patch  { color: var(--patch);  background: var(--patch-bg); }
.tag.prerelease, .tag.unknown { color: var(--other); background: var(--other-bg); }
.tag.added  { color: var(--added);  background: var(--added-bg); }
.tag.removed { color: var(--removed); background: var(--removed-bg); }

.badge {
  font-size: .68rem; font-weight: 600;
  padding: 2px 8px; border-radius: 999px; white-space: nowrap;
  border: 1px solid var(--border-strong);
  color: var(--ink-faint); background: var(--field);
}
.badge.direct { color: var(--accent-ink); border-color: color-mix(in srgb, var(--accent) 40%, transparent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.badge.transitive { color: var(--ink-faint); }
.badge.unknown { color: var(--minor); border-color: color-mix(in srgb, var(--minor) 40%, transparent); }
:root[data-theme="dark"] .badge.direct,
:root:not([data-theme="light"]) .badge.direct { color: var(--accent-2); }

.caveat {
  margin: 16px 0 4px;
  padding: 10px 13px;
  border-left: 3px solid var(--minor);
  background: var(--minor-bg);
  color: var(--minor);
  border-radius: 0 8px 8px 0;
  font-size: .8rem;
}

footer {
  margin-top: 26px;
  color: var(--ink-faint);
  font-size: .78rem;
  text-align: center;
  line-height: 1.6;
}
footer p { margin: 0 0 6px; }
footer code { font-family: var(--mono); font-size: .74rem; color: var(--ink-soft); }
footer a { color: var(--accent-ink); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) footer a { color: var(--accent); } }
:root[data-theme="dark"] footer a { color: var(--accent); }

.toast {
  position: fixed;
  bottom: 22px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--ink); color: var(--bg);
  padding: 10px 18px; border-radius: 10px;
  font-size: .84rem; font-weight: 600;
  opacity: 0; pointer-events: none;
  transition: opacity .2s, transform .2s;
  box-shadow: 0 8px 30px rgba(0,0,0,.3);
  z-index: 50;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---- responsive ---- */
@media (max-width: 760px) {
  .wrap { padding: 13px 13px 32px; }
  .editors { grid-template-columns: 1fr; gap: 10px; }
  textarea { height: 128px; font-size: 12px; }
  .pkgbox textarea { height: 104px; }
  h1 { font-size: 1.15rem; }
  .tag { font-size: .62rem; padding: 2px 6px; }
  .row { display: flex; flex-wrap: wrap; align-items: center; gap: 7px 9px; }
  .row .dir { flex: 0 0 auto; width: 14px; }
  .row .name { flex: 1 1 auto; min-width: 0; }
  .row .ver { flex: 1 0 100%; order: 5; }
  .row .tag { order: 3; }
  .row .badge { order: 4; }
  .toolbar { gap: 8px; }
  .summary { order: 2; width: 100%; }
  .btn { flex: 1 1 auto; text-align: center; }
  .btn.ghost { flex: 0 0 auto; }
  .spacer { display: none; }
}