/* Zero Byte Inc - migrate.zerobyte.ca
   Single stylesheet. Mobile-first, system fonts, light/dark via prefers-color-scheme. */

:root {
  --bg: #ffffff;
  --bg-alt: #f3f5f7;
  --surface: #ffffff;
  --text: #16191d;
  --muted: #4b5563;
  --border: #d5dae1;
  --accent: #0b6b61;
  --accent-ink: #ffffff;
  --accent-soft: #e3f3f0;
  --warn-soft: #fff6e0;
  --focus: #b45309;
  --shadow: 0 1px 2px rgba(0,0,0,.06);
  --gutter: 16px;
  --measure: 72ch;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --bg-alt: #161a20;
    --surface: #1b2027;
    --text: #e8eaed;
    --muted: #a8b0ba;
    --border: #2d343e;
    --accent: #5fd3c3;
    --accent-ink: #06201c;
    --accent-soft: #15302c;
    --warn-soft: #3a2e10;
    --focus: #fbbf24;
    --shadow: none;
  }
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.55;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

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

.skip-link {
  position: absolute; left: var(--gutter); top: -100px;
  background: var(--accent); color: var(--accent-ink);
  padding: .5rem .75rem; border-radius: 6px; z-index: 100;
}
.skip-link:focus { top: var(--gutter); }

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(1.75rem, 5vw, 2.75rem); }
h2 { font-size: clamp(1.4rem, 3.5vw, 1.9rem); margin-top: 0; }
h3 { font-size: 1.15rem; }
p, ul, ol, table { margin: 0 0 1rem; }
ul, ol { padding-left: 1.25rem; }
li + li { margin-top: .3rem; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; background: var(--bg-alt); padding: .05em .3em; border-radius: 4px; }
small, .small { font-size: .9rem; }
.muted { color: var(--muted); }
.lead { font-size: 1.15rem; max-width: var(--measure); }

.wrap { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 var(--gutter); }
.measure { max-width: var(--measure); }

/* Header / nav */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.site-header .wrap {
  display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1rem;
  min-height: 56px; padding-top: .5rem; padding-bottom: .5rem;
}
.brand { display: inline-flex; align-items: center; gap: .5rem; font-weight: 700; text-decoration: none; color: var(--text); }
.brand img { width: 28px; height: 28px; }
.site-nav { margin-left: auto; }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .25rem .9rem; }
.site-nav li + li { margin: 0; }
.site-nav a { color: var(--text); text-decoration: none; padding: .35rem 0; display: inline-block; }
.site-nav a:hover, .site-nav a[aria-current="page"] { text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 2px; }

/* Sections */
section { padding: 2.5rem 0; }
section + section { border-top: 1px solid var(--border); }
.alt { background: var(--bg-alt); }
.hero { padding: 3rem 0 2.5rem; }
.hero p.lead { margin-bottom: 1.25rem; }
.hero .actions { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .78rem; color: var(--muted); font-weight: 600; margin-bottom: .75rem; }

/* Buttons */
.btn {
  display: inline-block; padding: .7rem 1.1rem; border-radius: 8px;
  background: var(--accent); color: var(--accent-ink); font-weight: 600;
  text-decoration: none; border: 2px solid var(--accent); cursor: pointer;
  font: inherit; font-weight: 600; line-height: 1.2;
}
.btn:hover { filter: brightness(1.08); text-decoration: none; }
.btn.secondary { background: transparent; color: var(--accent); }

/* Cards and grids */
.grid { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 720px) { .grid.cols-3 { grid-template-columns: repeat(3, 1fr); } .grid.cols-2 { grid-template-columns: repeat(2, 1fr); } }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 1.1rem 1.1rem .5rem; box-shadow: var(--shadow);
}
.card h3 { margin-top: 0; }
.note {
  border-left: 4px solid var(--accent); background: var(--accent-soft);
  padding: .75rem 1rem; border-radius: 0 8px 8px 0; margin: 1rem 0;
}
.note p:last-child { margin-bottom: 0; }

/* Tables */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 1rem; border: 1px solid var(--border); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: .97rem; background: var(--surface); }
caption { text-align: left; padding: .6rem .75rem; font-weight: 600; caption-side: top; }
th, td { text-align: left; vertical-align: top; padding: .6rem .75rem; border-top: 1px solid var(--border); }
thead th { background: var(--bg-alt); border-top: 0; font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.compact { min-width: 0; }

/* Calculator */
.calc { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.25rem var(--gutter); }
.calc form { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 720px) { .calc form { grid-template-columns: 1fr 1fr; } }
.field label { display: block; font-weight: 600; margin-bottom: .3rem; }
.field .hint { display: block; color: var(--muted); font-size: .9rem; margin-top: .25rem; }
input[type="number"], input[type="text"], input[type="email"], input[type="url"], select, textarea {
  width: 100%; font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; padding: .6rem .7rem;
}
textarea { min-height: 7rem; resize: vertical; }
.calc-out { margin-top: 1.25rem; }
.stats { display: grid; gap: .75rem; grid-template-columns: 1fr 1fr; margin: 0 0 1rem; padding: 0; list-style: none; }
@media (min-width: 720px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stats li { margin: 0; background: var(--bg-alt); border-radius: 8px; padding: .75rem .9rem; }
.stats .label { display: block; color: var(--muted); font-size: .85rem; }
.stats .value { display: block; font-size: 1.35rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stats .emph { background: var(--accent-soft); }
.formula { font-size: .92rem; color: var(--muted); }

/* Timeline / process */
.steps { list-style: none; padding: 0; margin: 0; counter-reset: step; display: grid; gap: .9rem; }
@media (min-width: 720px) { .steps { grid-template-columns: repeat(2, 1fr); } }
.steps li { margin: 0; position: relative; padding-left: 3rem; }
.steps li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0; width: 2.2rem; height: 2.2rem;
  border-radius: 50%; background: var(--accent); color: var(--accent-ink);
  display: inline-flex; align-items: center; justify-content: center; font-weight: 700;
}
.steps h3 { margin-bottom: .2rem; font-size: 1.05rem; }
.steps p { margin-bottom: 0; }

/* FAQ */
.faq details { border: 1px solid var(--border); border-radius: 8px; padding: 0 1rem; background: var(--surface); margin-bottom: .6rem; }
.faq summary { cursor: pointer; padding: .8rem 0; font-weight: 600; list-style: none; position: relative; padding-right: 1.75rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: .7rem; font-size: 1.3rem; line-height: 1; color: var(--accent); }
.faq details[open] summary::after { content: "\2212"; }
.faq details > p { margin-top: 0; }

/* Contact form */
.form-grid { display: grid; gap: .9rem; grid-template-columns: 1fr; }
@media (min-width: 720px) { .form-grid { grid-template-columns: 1fr 1fr; } .form-grid .full { grid-column: 1 / -1; } }
.check { display: flex; gap: .6rem; align-items: flex-start; font-weight: 400; }
.check input { width: 1.15rem; height: 1.15rem; margin-top: .2rem; flex: none; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 2rem 0; font-size: .92rem; color: var(--muted); }
.site-footer p { margin-bottom: .4rem; }
.site-footer a { color: inherit; }

/* Misc */
.badge { display: inline-block; font-size: .8rem; font-weight: 600; padding: .15rem .5rem; border-radius: 999px; background: var(--accent-soft); color: var(--text); }
.price { font-weight: 700; white-space: nowrap; }
hr { border: 0; border-top: 1px solid var(--border); margin: 1.5rem 0; }
.error-page { text-align: center; padding: 5rem 0; }
.error-page h1 { font-size: 3rem; }
.error-page .lead { margin-inline: auto; }
img { max-width: 100%; height: auto; }