:root {
  color-scheme: light dark;
  --bg: #f6f4ee;
  --surface: #ffffff;
  --surface-2: #f0ede5;
  --border: #e3dfd5;
  --border-strong: #cfcabd;
  --text: #1d211e;
  --muted: #646b64;
  --accent: #1d6a54;
  --accent-hover: #155240;
  --accent-ink: #ffffff;
  --accent-soft: #e1eee7;
  --bill: #e09a35;
  --del-bg: #fcebe8;
  --del-mark: #f5c3bb;
  --del-ink: #a1302a;
  --ins-bg: #e4f3e8;
  --ins-mark: #b3dfbf;
  --ins-ink: #1c6b37;
  --syn-key: #1d6a54;
  --syn-str: #95560f;
  --syn-num: #2457a4;
  --syn-lit: #b0431f;
  --shadow: 0 1px 2px rgb(29 33 30 / .04), 0 6px 20px rgb(29 33 30 / .05);
  --radius: 12px;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121412;
    --surface: #191c19;
    --surface-2: #212521;
    --border: #2b302b;
    --border-strong: #3b413b;
    --text: #e8e6df;
    --muted: #9ba29a;
    --accent: #6cc3a3;
    --accent-hover: #8ad3b8;
    --accent-ink: #0c1912;
    --accent-soft: #1b2d26;
    --bill: #f0b057;
    --del-bg: #351d1a;
    --del-mark: #6c2d25;
    --del-ink: #f3b6ad;
    --ins-bg: #172e1e;
    --ins-mark: #245539;
    --ins-ink: #a6dfb7;
    --syn-key: #7fcfb1;
    --syn-str: #e8b874;
    --syn-num: #92b7f0;
    --syn-lit: #f09a7c;
    --shadow: none;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-underline-offset: .18em; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 2px solid var(--bill); outline-offset: 2px; }
[hidden] { display: none !important; }
code { font-family: var(--mono); }

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Frame */
.top { background: var(--surface); border-bottom: 1px solid var(--border); }
.top-inner, .page, .bottom-inner { width: 100%; max-width: 1240px; margin: 0 auto; padding-left: 28px; padding-right: 28px; }
.top-inner { display: flex; align-items: center; gap: 24px; height: 62px; }
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
  color: var(--text);
  text-decoration: none;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.015em;
}
.brand:hover { color: var(--text); }
.logo { width: 30px; height: 30px; }
.logo-bg { fill: var(--accent); }
.logo-body, .logo-head { fill: var(--accent-ink); }
.logo-bill { fill: var(--bill); }
.logo-eye { fill: var(--accent); }
.nav { display: flex; gap: 2px; margin-left: auto; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a {
  padding: 7px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}
.nav a:hover { color: var(--text); background: var(--surface-2); }
.nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); }

main { flex: 1; }
.page { padding-top: 40px; padding-bottom: 64px; }
.page.narrow { max-width: 780px; }

.bottom { border-top: 1px solid var(--border); color: var(--muted); font-size: 13.5px; }
.bottom-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 24px; padding-top: 18px; padding-bottom: 26px; }
.bottom p { margin: 0; }
.bottom a { color: var(--muted); }
.bottom a:hover { color: var(--text); }

/* Type */
h1 { margin: 0 0 8px; font-size: clamp(26px, 3.2vw, 34px); line-height: 1.15; font-weight: 720; letter-spacing: -.024em; }
h2 { font-size: 19px; letter-spacing: -.012em; }
.lede { max-width: 66ch; margin: 0 0 28px; color: var(--muted); font-size: 16px; }

/* Home */
.hero { padding: 28px 0 40px; }
.hero h1 { font-size: clamp(34px, 5.4vw, 54px); line-height: 1.06; letter-spacing: -.035em; text-wrap: balance; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lede { margin-top: 18px; font-size: 18px; }
.tools { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 0; padding: 0; list-style: none; }
.card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  color: var(--text);
  text-decoration: none;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { color: var(--text); border-color: var(--accent); transform: translateY(-2px); }
.card h2 { margin: 12px 0 0; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }
.icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent);
}
.icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.note {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
  padding: 18px 22px;
  border: 1px dashed var(--border-strong);
  border-radius: 16px;
  color: var(--muted);
}
.note p { margin: 0; }
.note strong { color: var(--text); }

/* Prose */
.prose h2 { margin: 36px 0 8px; }
.prose p, .prose li { max-width: 68ch; }
.prose ul { padding-left: 20px; }
.prose li + li { margin-top: 6px; }

/* Not found */
.lost { padding-top: 72px; text-align: center; }
.lost .lede { margin-left: auto; margin-right: auto; }
.lost-code { margin: 0 0 8px; color: var(--bill); font: 700 15px var(--mono); letter-spacing: .12em; }

/* Controls */
button, input, select, textarea { font: inherit; color: inherit; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 13px;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  background: var(--surface);
  color: var(--text);
  font: 500 14px/1.2 var(--sans);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}
.btn:hover { background: var(--surface-2); color: var(--text); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--accent-ink); }
.btn.small { padding: 6px 10px; font-size: 13px; border-radius: 8px; }
.btn.quiet { background: transparent; border-color: transparent; color: var(--muted); }
.btn.quiet:hover { background: var(--surface-2); color: var(--text); }
.file { position: relative; }
.file:focus-within { outline: 2px solid var(--bill); outline-offset: 2px; }

.seg { display: inline-flex; padding: 3px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; }
.seg label { position: relative; }
.seg input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.seg span { display: block; padding: 5px 12px; border-radius: 7px; color: var(--muted); font-size: 13.5px; font-weight: 500; white-space: nowrap; }
.seg label:hover span { color: var(--text); }
.seg input:checked + span { background: var(--surface); color: var(--text); box-shadow: 0 1px 2px rgb(0 0 0 / .1); }
.seg input:focus-visible + span { outline: 2px solid var(--bill); outline-offset: 1px; }

.check { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; cursor: pointer; white-space: nowrap; }
.check input[type="checkbox"] { width: 16px; height: 16px; margin: 0; accent-color: var(--accent); }

textarea, .output, .input, select {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 11px;
}
textarea, .output {
  display: block;
  width: 100%;
  min-height: 300px;
  max-height: 75vh;
  padding: 13px 15px;
  font: 13px/1.6 var(--mono);
  tab-size: 4;
  resize: vertical;
}
textarea.short { min-height: 150px; }
textarea::placeholder, .input::placeholder { color: var(--muted); opacity: .8; }
.output { margin: 0; overflow: auto; white-space: pre; }
.input { padding: 10px 14px; font: 15px/1.3 var(--mono); }
.input.small-number { width: 88px; padding: 6px 10px; font-size: 14px; }
select {
  appearance: none;
  padding: 6px 30px 6px 10px;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 16px) 52%, calc(100% - 11px) 52%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  font-size: 13.5px;
  cursor: pointer;
}
select:disabled { opacity: .5; cursor: default; }
textarea:focus, .output:focus, .input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; margin: 18px 0; }
.lede + .toolbar { margin-top: 0; }
.spacer { flex: 1; }
.buttons { display: flex; align-items: center; gap: 8px; }
.grow { flex: 1 1 280px; display: flex; }
.grow .input { width: 100%; }

.panes { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.pane { display: flex; flex-direction: column; min-width: 0; }
.pane-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 34px; margin-bottom: 6px; }
.pane-head label, .pane-head .label { font-size: 14px; font-weight: 600; }
.actions { display: flex; align-items: center; gap: 4px; }

.status { min-height: 21px; margin: 8px 2px 0; color: var(--muted); font-size: 13.5px; }
.status.ok { color: var(--ins-ink); }
.status.error { color: var(--del-ink); }
.hint { margin: -6px 0 18px; color: var(--muted); font-size: 14px; }

/* Compare */
.summary { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; min-height: 30px; margin: 26px 0 12px; color: var(--muted); font-size: 14px; }
.chip { display: inline-flex; align-items: center; padding: 3px 11px; border-radius: 999px; font-size: 13px; font-weight: 600; }
.chip.del { background: var(--del-bg); color: var(--del-ink); }
.chip.ins { background: var(--ins-bg); color: var(--ins-ink); }
.chip.same { background: var(--accent-soft); color: var(--accent); }
.warn { color: var(--del-ink); }
.diff-wrap { overflow: auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
table.diff { width: 100%; border-collapse: collapse; table-layout: fixed; font: 12.5px/1.6 var(--mono); }
.diff col.ln { width: 54px; }
.diff col.sign { width: 24px; }
.diff tbody:first-of-type tr:first-child td { padding-top: 8px; }
.diff tbody:last-of-type tr:last-child td { padding-bottom: 8px; }
.diff td { padding: 1px 12px; vertical-align: top; white-space: pre-wrap; overflow-wrap: anywhere; }
.diff td.code:empty::after { content: "\200b"; }
.diff td.ln { padding-left: 0; padding-right: 10px; color: var(--muted); font-size: 11.5px; text-align: right; user-select: none; }
.diff td.ln::before { content: attr(data-n); }
.diff td.sign { padding: 1px 0; color: var(--muted); text-align: center; user-select: none; }
.diff td.split { border-left: 1px solid var(--border); }
.diff td.del { background: var(--del-bg); }
.diff td.ins { background: var(--ins-bg); }
.diff td.sign.del, .diff td.ln.del { color: var(--del-ink); }
.diff td.sign.ins, .diff td.ln.ins { color: var(--ins-ink); }
.diff td.empty { background: var(--surface-2); }
.diff .x { border-radius: 3px; }
.diff td.del .x { background: var(--del-mark); }
.diff td.ins .x { background: var(--ins-mark); }
.diff tbody.fold td { padding: 3px; background: var(--surface-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); text-align: center; }
.fold button { padding: 4px 12px; border: 0; border-radius: 6px; background: none; color: var(--accent); font: 500 12.5px var(--sans); cursor: pointer; }
.fold button:hover { background: var(--accent-soft); }

/* JSON */
.output .k { color: var(--syn-key); }
.output .s { color: var(--syn-str); }
.output .n { color: var(--syn-num); }
.output .l { color: var(--syn-lit); font-weight: 600; }
.output .p { color: var(--muted); }

/* Hash */
.file-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 150px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  border-radius: 11px;
}
.file-chip strong { overflow-wrap: anywhere; }
.file-chip span { color: var(--muted); }
.results { display: grid; gap: 8px; }
.result {
  display: grid;
  grid-template-columns: 96px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 11px 12px 11px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 11px;
}
.result .name { font-size: 13px; font-weight: 650; }
.result .value { font: 13px/1.5 var(--mono); overflow-wrap: anywhere; user-select: all; }
.result.match { background: var(--ins-bg); border-color: var(--ins-ink); }
.result.match .name { color: var(--ins-ink); }

/* Time */
.clock {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-bottom: 26px;
  padding: 18px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}
.clock-label { color: var(--muted); font-size: 14px; }
.clock-value { font: 600 28px/1.1 var(--mono); letter-spacing: -.01em; }
.clock .btn { margin-left: auto; }
.row { display: flex; gap: 10px; }
.row .input { flex: 1; min-width: 0; }
.rows { margin: 14px 0 0; overflow: hidden; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; }
.rows div { display: grid; grid-template-columns: 170px 1fr auto; align-items: center; gap: 12px; padding: 9px 12px 9px 16px; }
.rows div + div { border-top: 1px solid var(--border); }
.rows dt { color: var(--muted); font-size: 13.5px; }
.rows dd { margin: 0; font: 13.5px/1.5 var(--mono); overflow-wrap: anywhere; }

@media (max-width: 980px) {
  .tools { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .tools { grid-template-columns: 1fr; }
  .top-inner, .page, .bottom-inner { padding-left: 16px; padding-right: 16px; }
  .top-inner { gap: 14px; height: 56px; }
  .brand span { display: none; }
  .page { padding-top: 28px; padding-bottom: 44px; }
  .panes { grid-template-columns: 1fr; }
  textarea, .output { min-height: 200px; }
  .result, .rows div { grid-template-columns: 1fr auto; gap: 4px 12px; }
  .result .name, .rows dt { grid-column: 1 / -1; }
  .diff col.ln { width: 40px; }
}

@media (max-width: 560px) {
  .top-inner { flex-wrap: wrap; height: auto; row-gap: 4px; padding-top: 12px; padding-bottom: 6px; }
  .brand span { display: inline; }
  .nav { width: calc(100% + 16px); margin: 0 -8px; justify-content: space-between; }
  .nav a { padding: 7px 8px; font-size: 13.5px; }
}