/* Fonts are self-hosted so that no visitor data goes to a third party. */
@font-face {
  font-family: "Barlow";
  font-weight: 400;
  font-display: swap;
  src: url("fonts/barlow-latin-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+2000-206F;
}
@font-face {
  font-family: "Barlow";
  font-weight: 400;
  font-display: swap;
  src: url("fonts/barlow-latin-ext-400-normal.woff2") format("woff2");
  unicode-range: U+0100-024F;
}
@font-face {
  font-family: "Barlow";
  font-weight: 600;
  font-display: swap;
  src: url("fonts/barlow-latin-600-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+2000-206F;
}
@font-face {
  font-family: "Barlow";
  font-weight: 600;
  font-display: swap;
  src: url("fonts/barlow-latin-ext-600-normal.woff2") format("woff2");
  unicode-range: U+0100-024F;
}

:root {
  --navy: #0c1c5c;
  --ink: #101a38;
  --steel: #c6ccd2;
  --etch: rgba(16, 26, 56, 0.5);
  --catch-light: rgba(255, 255, 255, 0.55);
  --red: #a80d24;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
}

* { box-sizing: border-box; }

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
  padding: clamp(1rem, 4vw, 3rem);
  font: 400 1.0625rem/1.5 "Barlow", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--navy);
}

h1, h2, p { margin: 0; }

a { color: inherit; text-underline-offset: 0.15em; }
a:hover { color: var(--red); }
a:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }

/* The page is a stainless steel rating plate. */
.plate {
  position: relative;
  width: 100%;
  max-width: 56rem;
  padding: var(--gutter);
  border-radius: 6px;
  background-color: var(--steel);
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1400' height='700'%3E%3Cfilter id='b'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.004 1.2' numOctaves='3' seed='7'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .34 0 0 0 -.11'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23b)'/%3E%3C/svg%3E"),
    linear-gradient(105deg, #b9c0c7 0%, #e3e6e9 26%, #c0c6cd 50%, #e6e9eb 72%, #bcc2c9 100%);
  background-size: 1400px 700px, auto;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    inset 0 -1px 0 rgba(16, 26, 56, 0.35),
    0 1.5rem 3rem rgba(2, 6, 28, 0.55);
}

.screw {
  position: absolute;
  width: 0.875rem;
  height: 0.875rem;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #f1f3f5, #868e97 75%);
  box-shadow: 0 1px 1px rgba(2, 6, 28, 0.6), 0 0 0 1px rgba(16, 26, 56, 0.35);
}
.screw::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 10%;
  width: 80%;
  height: 2px;
  margin-top: -1px;
  background: #3b424d;
  transform: rotate(var(--turn));
}
.screw:nth-of-type(1) { top: 0.5rem; left: 0.5rem; --turn: 28deg; }
.screw:nth-of-type(2) { top: 0.5rem; right: 0.5rem; --turn: -62deg; }
.screw:nth-of-type(3) { bottom: 0.5rem; left: 0.5rem; --turn: 74deg; }
.screw:nth-of-type(4) { bottom: 0.5rem; right: 0.5rem; --turn: -15deg; }

.maker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
}
.maker img { display: block; flex: none; }
h1 {
  font-size: clamp(1.625rem, 4.5vw, 2.25rem);
  font-weight: 600;
  line-height: 1.15;
}

.status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}
.status p { font-size: 1.25rem; font-weight: 600; }

.button {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0 1.5rem;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  color: #fff;
  background: var(--navy);
  border: 1px solid var(--navy);
  border-radius: 2px;
  cursor: pointer;
}
.button:hover { color: #fff; background: var(--ink); }
.button.quiet { color: var(--ink); background: transparent; }
.button.quiet:hover { color: #fff; background: var(--ink); }
.button[hidden] { display: none; }
.actions { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 0.75rem; }

.fields {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}
.field {
  grid-column: span 2;
  min-width: 0;
  padding: 0.75rem 1rem 0.875rem 0;
  overflow-wrap: anywhere;
  border-top: 1px solid var(--etch);
  box-shadow: inset 0 1px 0 var(--catch-light);
}
.field.wide { grid-column: span 3; }
.field h2 { font-size: 0.9375rem; font-weight: 400; }
.field p { font-size: 1.125rem; }
.field .name { font-weight: 600; }

.form {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  row-gap: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--etch);
  box-shadow: inset 0 1px 0 var(--catch-light);
}
.form h2 { grid-column: 1 / -1; font-size: 1.125rem; font-weight: 600; }
.form label { display: block; min-width: 0; padding-right: 1rem; font-size: 0.9375rem; }
.form input,
.form select {
  display: block;
  width: 100%;
  min-height: 2.75rem;
  margin-top: 0.125rem;
  padding: 0 0.625rem;
  font: inherit;
  font-size: 1.125rem;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(16, 26, 56, 0.7);
  border-radius: 2px;
  box-shadow: inset 0 1px 2px rgba(16, 26, 56, 0.3);
}
.form input:focus-visible,
.form select:focus-visible,
.button:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }
.form .note { grid-column: 1 / -1; font-weight: 600; }
.form .hint { grid-column: 1 / -1; font-size: 0.9375rem; }

.calculator { margin-top: clamp(1.5rem, 4vw, 2.25rem); }
.result { grid-column: 1 / -1; }
.result-total {
  font-size: clamp(2.5rem, 9vw, 4.5rem);
  font-weight: 600;
  line-height: 1.1;
  color: var(--navy);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 40rem) {
  .fields, .form { grid-template-columns: 1fr; }
  .field, .field.wide { grid-column: auto; padding-right: 0; }
  .form label { padding-right: 0; }
}

@page { size: A4 landscape; margin: 0; }
@media print {
  html, body { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  body { min-height: 208mm; padding: 0 1.5rem; }
  .no-print { display: none; }
}