/* A page that looks like someone typed it, not generated it. */

:root {
  --paper:      #f7f4ed;
  --paper-2:    #fffdf8;
  --field:      #ffffff;
  --ink:        #1a1815;
  --ink-soft:   #56504a;
  --ink-faint:  #8d867c;
  --rule:       #ddd6c8;
  --rule-2:     #c7bda9;
  --stamp:      #8a1f16;
  --ok:         #2c6538;
  --warn:       #8a5a12;

  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  --serif: ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;

  --measure: 40rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:     #15130f;
    --paper-2:   #1b1813;
    --field:     #0f0d0a;
    --ink:       #ece6da;
    --ink-soft:  #a9a093;
    --ink-faint: #7a7266;
    --rule:      #2e2a23;
    --rule-2:    #3d382f;
    --stamp:     #d4553f;
    --ok:        #6fbf7f;
    --warn:      #d6a052;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.62;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1.35rem 5.5rem;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

a { color: inherit; }

::selection { background: var(--ink); color: var(--paper); }

/* ---------------------------------------------------------------- header */

.site-header {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  padding: 1.55rem 0 0.95rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.site-header .mark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 600;
  color: var(--ink);
}

.site-header .mark i {
  width: 6px;
  height: 6px;
  background: var(--stamp);
  display: inline-block;
  transform: translateY(-1px);
}

.site-header nav {
  margin-left: auto;
  display: flex;
  gap: 1.1rem;
}

.site-header nav a {
  color: var(--ink-faint);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color 0.12s ease, border-color 0.12s ease;
}

.site-header nav a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* ----------------------------------------------------------------- intro */

.intro { padding: 3.1rem 0 0; }

.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 1.1rem;
}

h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.05rem, 5.6vw, 3rem);
  line-height: 1.06;
  letter-spacing: -0.021em;
  margin: 0 0 1.35rem;
  text-wrap: balance;
}

.lede {
  margin: 0 0 1.05rem;
  max-width: var(--measure);
  color: var(--ink-soft);
}

.lede:last-child { margin-bottom: 0; }

/* ------------------------------------------------------------------ tool */

.tool {
  margin: 2.6rem 0 0;
  border: 1px solid var(--rule-2);
  background: var(--paper-2);
}

.tool-bar {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 0.8rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.tool-bar .spacer { margin-left: auto; }

.dot {
  width: 6px;
  height: 6px;
  background: var(--rule-2);
  flex: none;
  transition: background 0.15s ease;
}

.dot.on  { background: var(--ok); }
.dot.err { background: var(--stamp); }

#clock {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

form {
  display: flex;
  gap: 0;
  padding: 0.9rem;
}

input[type="text"] {
  flex: 1 1 auto;
  min-width: 0;
  height: 2.9rem;
  padding: 0 0.8rem;
  border: 1px solid var(--rule-2);
  border-right: 0;
  border-radius: 0;
  background: var(--field);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  outline: none;
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
}

input[type="text"]::placeholder { color: var(--ink-faint); opacity: 0.75; }

input[type="text"]:focus {
  border-color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--ink);
}

button {
  height: 2.9rem;
  padding: 0 1.35rem;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}

button:hover:not(:disabled) {
  background: var(--stamp);
  border-color: var(--stamp);
}

button:active:not(:disabled) { transform: translateY(1px); }

button:focus-visible {
  outline: 2px solid var(--stamp);
  outline-offset: 2px;
}

button:disabled {
  background: transparent;
  border-color: var(--rule-2);
  color: var(--ink-faint);
  cursor: progress;
}

#log {
  margin: 0 0.9rem 0.9rem;
  padding: 0.65rem 0.8rem;
  min-height: 3.4rem;
  max-height: 13rem;
  overflow-y: auto;
  border: 1px solid var(--rule);
  background: var(--field);
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.85;
  color: var(--ink-soft);
  white-space: pre-wrap;
  word-break: break-word;
}

#log::-webkit-scrollbar { width: 9px; }
#log::-webkit-scrollbar-thumb {
  background: var(--rule-2);
  border: 3px solid var(--field);
}

#log .t    { color: var(--ink-faint); }
#log .ok   { color: var(--ok); }
#log .warn { color: var(--warn); }
#log .bad  { color: var(--stamp); }
#log .lbl  { color: var(--ink); }

/* ---------------------------------------------------------------- result */

.result {
  display: none;
  margin: 0 0.9rem 0.9rem;
  padding: 0.85rem;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--ok);
  background: var(--paper-2);
}

.result.show { display: block; }

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.6rem;
  margin: 0 0 0.8rem;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.meta > div { display: flex; gap: 0.45rem; align-items: baseline; }
.meta dt { color: var(--ink-faint); margin: 0; }
.meta dd {
  margin: 0;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  text-transform: none;
  letter-spacing: 0;
}

.dest { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: stretch; }

.dest output {
  flex: 1 1 16rem;
  min-width: 0;
  display: flex;
  align-items: center;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--rule-2);
  background: var(--field);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--ok);
  word-break: break-all;
  user-select: all;
}

.dest-actions { display: flex; gap: 0.5rem; }

button.ghost, a.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: auto;
  min-height: 2.3rem;
  padding: 0 0.95rem;
  border: 1px solid var(--rule-2);
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  text-decoration: none;
}

button.ghost:hover, a.ghost:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.fineprint {
  margin: 0.9rem 0 0;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  color: var(--ink-faint);
  max-width: var(--measure);
}

/* --------------------------------------------------------------- sections */

section { padding-top: 3.4rem; }

h2 {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0 0 1.3rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--rule);
}

#how p {
  margin: 0 0 1.1rem;
  max-width: var(--measure);
  color: var(--ink-soft);
}

#how p:last-child { margin-bottom: 0; }

code {
  font-family: var(--mono);
  font-size: 0.86em;
  color: var(--ink);
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: 0.05em 0.3em;
}

/* ----------------------------------------------------------------- limits */

.limits { margin: 0; }

.limits > div {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--rule);
}

.limits > div:first-child { padding-top: 0; }
.limits > div:last-child { border-bottom: 0; padding-bottom: 0; }

.limits dt {
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 0.2rem;
}

.limits dd {
  margin: 0;
  max-width: var(--measure);
  color: var(--ink-soft);
  font-size: 16px;
}

/* ------------------------------------------------------------------ notes */

.notes {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: var(--measure);
}

.notes li {
  position: relative;
  padding: 0 0 0 1.15rem;
  margin: 0 0 0.95rem;
  color: var(--ink-soft);
}

.notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 0.42rem;
  height: 1px;
  background: var(--rule-2);
}

.notes li:last-child { margin-bottom: 0; }

/* ---------------------------------------------------------------- footer */

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  margin-top: 4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ------------------------------------------------------------ small view */

@media (max-width: 34rem) {
  body { font-size: 16.5px; }
  .page { padding: 0 1.1rem 4rem; }
  .intro { padding-top: 2.4rem; }
  .site-header nav { gap: 0.85rem; }
  form { flex-wrap: wrap; padding: 0.75rem; }
  input[type="text"] { border-right: 1px solid var(--rule-2); }
  button#go { width: 100%; margin-top: 0.5rem; }
  footer { justify-content: flex-start; gap: 0.35rem 1.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}