/* ===== Colors and fonts ===== */
:root {
  --bg: #E9EDF1;       /* page background */
  --surface: #FFFFFF;  /* boxes */
  --ink: #172030;      /* main text */
  --muted: #566170;    /* labels and hints */
  --line: #CDD4DC;     /* borders */
  --focus: #1F5FBF;    /* keyboard focus ring */
  --fil: #2F6FE4;      /* spool color (the page changes this) */
  --display: "Bricolage Grotesque", system-ui, sans-serif;
  --body: "Atkinson Hyperlegible", system-ui, sans-serif;
}

/* Dark mode: same names, darker values */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11161D;
    --surface: #19212B;
    --ink: #E4E9EF;
    --muted: #9AA6B4;
    --line: #2C3743;
    --focus: #7FB0FF;
  }
}

/* ===== Page basics ===== */
* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1rem/1.55 var(--body);
}

[hidden] { display: none !important; }

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

h1 {
  font: 700 clamp(2rem, 5vw, 3.25rem)/1.05 var(--display);
  letter-spacing: -0.02em;
  margin: 0 0 0.6rem;
}

h2 {
  font: 700 1.15rem/1.3 var(--display);
  margin: 0 0 0.9rem;
}

header { max-width: 40rem; margin-bottom: 2rem; }
header p { margin: 0; color: var(--muted); font-size: 1.1rem; }

/* ===== Layout: one column on phones, two side by side on wide screens ===== */
.layout { display: grid; gap: 1.5rem; }
.inputs { display: grid; gap: 1rem; }

@media (min-width: 880px) {
  .layout { grid-template-columns: 1fr 1fr; align-items: start; }
  .results { position: sticky; top: 1rem; }  /* results stay on screen while you scroll */
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.25rem;
}

fieldset { border: 0; margin: 0; min-width: 0; }
legend { padding: 0; float: left; width: 100%; }  /* keeps the heading inside its box */
legend + * { clear: both; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.8rem; }

@media (max-width: 480px) {
  .grid3 { grid-template-columns: 1fr 1fr; }
  .grid3 > :last-child { grid-column: 1 / -1; }
}

/* ===== Form fields ===== */
label {
  display: block;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 0.3rem;
}

input, select, button { font: inherit; color: inherit; }

input[type="number"], input[type="text"], select {
  width: 100%;
  min-height: 44px;  /* big enough to tap */
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
}

input[type="color"] {
  width: 100%;
  height: 44px;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
}

:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.hint { font-size: 0.85rem; color: var(--muted); margin: 0.5rem 0 0; }
.custom { margin-top: 0.6rem; }

/* One row per print: name, amount, unit, remove */
.job {
  display: grid;
  grid-template-columns: 1.4fr 1fr 4.5rem 44px;
  gap: 0.5rem;
  align-items: end;
  margin-bottom: 0.6rem;
}

/* Only the first row shows its labels */
.job label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.job:first-child label { position: static; width: auto; height: auto; clip: auto; }

.remove {
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  font-size: 1.2rem;
}
.remove:disabled { opacity: 0.35; cursor: default; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.55rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}
.btn.primary { background: var(--ink); color: var(--surface); border-color: var(--ink); }
.btn.tip { border-color: var(--ink); }

/* ===== Results ===== */
.answer {
  font: 700 clamp(1.6rem, 4vw, 2.3rem)/1.15 var(--display);
  letter-spacing: -0.015em;
  margin: 0 0 0.35rem;
}
.sub { color: var(--muted); margin: 0 0 1.2rem; }

.spools { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 1.3rem; }
.spool { width: 72px; text-align: center; font-size: 0.8rem; color: var(--muted); }
.spool svg { display: block; width: 72px; height: 72px; }
.spool .arc { transition: stroke-dasharray 0.5s ease; }
.more { align-self: center; color: var(--muted); }

@media (prefers-reduced-motion: reduce) {
  .spool .arc { transition: none; }
}

dl {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.45rem 1rem;
  margin: 0 0 1.2rem;
  font-variant-numeric: tabular-nums;  /* digits line up */
}
dt { color: var(--muted); }
dd { margin: 0; text-align: right; font-weight: 700; }

table { width: 100%; border-collapse: collapse; font-size: 0.92rem; margin-bottom: 1.2rem; }
th, td { padding: 0.4rem 0; border-top: 1px solid var(--line); text-align: right; }
th:first-child, td:first-child { text-align: left; }
th { font-weight: 400; color: var(--muted); }

.actions { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.disclose { font-size: 0.8rem; color: var(--muted); margin: 0.8rem 0 0; }
.disclose a { color: inherit; }

/* ===== Footer ===== */
footer {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.9rem;
}
footer a:not(.btn) { color: inherit; }
.links { display: flex; flex-wrap: wrap; gap: 0.6rem; }
/* ===== Logo ===== */
.logo {
  display: inline-block;
  margin: 0 0 1.75rem;
  font: 700 2rem/1 var(--display);
  letter-spacing: -0.035em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
.logo svg { height: 0.6em; width: 1.275em; vertical-align: -0.07em; margin: 0 0.015em; }
.logo .flange { stroke: var(--ink); }
.logo .fil-a { stroke: #2F6FE4; }

@media (prefers-color-scheme: dark) {
  .logo .fil-a { stroke: #5B8CF0; }
}