/* ============================================================
   Convertburda — shared design tokens & components
   All colors live here as CSS variables (rule 2). No hex outside :root.
   ============================================================ */
:root {
  --bg: #eef1f5;
  --paper: #ffffff;
  --ink: #111820;
  --muted: #5b6673;
  --line: #dbe1e9;
  --accent: #d98a1f;
  --accent-ink: #5a3808;
  --accent2: #2f7dd9;
  --accent2-ink: #123a63;
  --grid-line: #e3e8ef;
  --ad-bg: #eff3f8;
  --ad-line: #c9d3df;
  --ok: #2f7d4f;
  --danger: #a3341f;
  --radius: 10px;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --ui: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--ui);
  color: var(--ink);
  background:
    radial-gradient(1100px 520px at 15% -10%, color-mix(in srgb, var(--accent) 10%, transparent), transparent),
    radial-gradient(900px 460px at 100% 0%, color-mix(in srgb, var(--accent2) 8%, transparent), transparent),
    var(--bg);
  background-attachment: fixed;
  position: relative;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: linear-gradient(to bottom, black, transparent 900px);
  mask-image: linear-gradient(to bottom, black, transparent 900px);
}
a { color: var(--accent-ink); }
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* ---- header ---- */
header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(238, 241, 245, .85);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
header::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}
.bar { max-width: 1180px; margin: 0 auto; display: flex; align-items: center; gap: 18px; padding: 12px 18px; }
.logo { font-weight: 800; letter-spacing: -.02em; font-size: 19px; display: flex; align-items: center; gap: 9px; text-decoration: none; color: var(--ink); }
.logo .mark { width: 22px; height: 22px; border: 2px solid var(--ink); border-radius: 5px; position: relative; flex: none; }
.logo .mark::after { content: ""; position: absolute; inset: 4px 4px auto auto; width: 6px; height: 6px; background: var(--accent); border-radius: 1px; }
.spacer { flex: 1; }
.ghost { background: none; border: 1px solid var(--line); color: var(--ink); padding: 8px 13px; border-radius: 8px; font: inherit; font-size: 14px; cursor: pointer; text-decoration: none; display: inline-block; }
.ghost:hover { border-color: var(--muted); }
.pro { border-color: var(--accent); color: var(--accent-ink); }
button:focus-visible, a:focus-visible, label:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- layout: fixed-ratio grid, never deforms on resize (rule 1) ---- */
.wrap {
  max-width: 1180px; margin: 0 auto; padding: 22px 18px 60px;
  display: grid; grid-template-columns: 160px minmax(0, 1fr) 160px; gap: 20px;
}
.rail { display: flex; flex-direction: column; gap: 16px; }
main { min-width: 0; }

/* ---- ad slots ---- */
.ad {
  background: var(--ad-bg); border: 1px dashed var(--ad-line); border-radius: 8px;
  color: #98a4b3; font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  display: flex; align-items: center; justify-content: center; text-align: center;
}
.ad.tall { min-height: 600px; }
.ad.block { min-height: 110px; margin: 22px 0; }
.ad.lead { min-height: 90px; margin-bottom: 22px; }

/* ---- tool / content card (homogeneous container, rule 3) ---- */
.tool {
  position: relative;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 22px 22px;
  box-shadow: 0 1px 2px rgba(17, 24, 32, .04), 0 10px 30px -18px rgba(17, 24, 32, .25);
  overflow: hidden;
}
.tool::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}
.eyebrow {
  font-family: var(--mono); font-size: 12px; color: var(--accent-ink); letter-spacing: .04em;
  display: inline-flex; align-items: center; gap: 7px;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  padding: 3px 10px; border-radius: 999px;
}
h1 { font-size: 26px; line-height: 1.15; letter-spacing: -.02em; margin: 6px 0 6px; }
.lede { color: var(--muted); margin: 0 0 18px; max-width: 60ch; }

.drop {
  border: 2px dashed var(--line); border-radius: 10px; padding: 30px 18px; text-align: center;
  background: linear-gradient(0deg, #fbfcfe, #fff); transition: border-color .15s, background .15s; cursor: pointer;
  display: block;
}
.drop.drag { border-color: var(--accent); background: #fff9ef; }
.drop strong { display: block; font-size: 15px; }
.drop small { color: var(--muted); }
input[type=file] { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 14px 0; }
.btn {
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 100%, white 8%), var(--accent));
  color: #211404; border: none; padding: 10px 16px; border-radius: 8px; font: inherit; font-weight: 600;
  cursor: pointer; text-decoration: none; display: inline-block;
  box-shadow: 0 6px 14px -8px color-mix(in srgb, var(--accent) 70%, transparent);
  transition: transform .1s ease, box-shadow .1s ease, filter .1s ease;
}
.btn:hover { filter: brightness(1.04); transform: translateY(-1px); box-shadow: 0 8px 18px -8px color-mix(in srgb, var(--accent) 75%, transparent); }
.btn[disabled] { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
select, input[type=range] { font: inherit; }
select { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
textarea {
  font-family: var(--mono); font-size: 13px; width: 100%; min-height: 160px; resize: vertical;
  padding: 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink);
}
label.fld { font-size: 14px; color: var(--muted); display: flex; align-items: center; gap: 8px; }

/* code viewer */
.code { border: 1px solid var(--line); border-radius: 8px; overflow: auto; max-height: 420px; background: #0e141b; }
.code table { border-collapse: collapse; width: 100%; font-family: var(--mono); font-size: 13px; }
.code td { padding: 1px 10px; white-space: pre; vertical-align: top; }
.code td.ln { color: #5a6b7d; text-align: right; user-select: none; background: #0b1016; position: sticky; left: 0; width: 1%; }
.code td.src { color: #d6e2ee; }
.tok-g { color: #7fd1ff; }
.tok-m { color: #ffb86b; }
.tok-axis { color: #a6e3a1; }
.tok-fs { color: #f2c56b; }
.tok-n { color: #6a7d8f; }
.tok-com { color: #6a7d8f; font-style: italic; }
.tok-num { color: #e6edf3; }

/* light data table (results, reference values) */
.table-wrap { overflow-x: auto; margin-top: 12px; }
.table { border-collapse: collapse; width: 100%; font-size: 14px; }
.table td { padding: 7px 10px; border-bottom: 1px solid var(--line); }
.table tr:first-child td { border-top: 1px solid var(--line); }
.table td:last-child { text-align: right; font-family: var(--mono); }

.meta { font-family: var(--mono); font-size: 12px; color: var(--muted); margin-top: 10px; }
.result-ok, .result-bad { border-radius: 8px; padding: 12px 14px; font-size: 14px; }
.result-ok { background: color-mix(in srgb, var(--ok) 12%, white); border: 1px solid var(--ok); color: var(--ok); }
.result-bad { background: color-mix(in srgb, var(--danger) 10%, white); border: 1px solid var(--danger); color: var(--danger); }
.preview { margin-top: 12px; border: 1px solid var(--line); border-radius: 8px; padding: 10px; background: #fbfcfe; text-align: center; }
.preview img { max-width: 100%; max-height: 320px; border-radius: 4px; }

/* explainer under the tool (SEO copy) — its own card, not transparent-on-grid */
.explain {
  margin-top: 22px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px; box-shadow: 0 1px 2px rgba(17, 24, 32, .04);
}
.explain h2 { font-size: 16px; margin: 0 0 8px; color: var(--ink); }
.explain h2:not(:first-child) { margin-top: 18px; }
.explain p { color: var(--muted); margin: 0 0 14px; max-width: 70ch; }
details { border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; margin-bottom: 8px; background: color-mix(in srgb, var(--ad-bg) 60%, white); }
details:hover { border-color: var(--accent); }
summary { cursor: pointer; font-weight: 600; font-size: 14px; }
details p { margin: 8px 0 2px; }

/* ---- catalog grid (used on home + "more tools" sections) ---- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.card {
  border: 1px solid var(--line); border-radius: 8px; padding: 12px 13px; background: #fff; cursor: pointer;
  text-align: left; font: inherit; text-decoration: none; color: inherit; display: block;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 8px 18px -12px rgba(17, 24, 32, .3); }
.card .t { font-weight: 600; font-size: 14px; }
.card .d { color: var(--muted); font-size: 12.5px; margin-top: 2px; }
.card .tag { display: inline-block; margin-top: 8px; font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; color: #93a0af; }
.card.soon { opacity: .72; cursor: default; }

/* ---- homepage hero + segments ---- */
.hero { position: relative; overflow: visible; }
.hero-deco { position: absolute; top: -14px; right: -10px; width: 130px; height: 130px; opacity: .9; pointer-events: none; }
.hero h1 { max-width: 24ch; }
.hero .lede { max-width: 56ch; }

.segments { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.segment { text-align: left; }
.segment h2 { font-size: 17px; margin: 4px 0 6px; }
.segment p { color: var(--muted); font-size: 14px; margin: 0 0 14px; }
.segment-icon {
  width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
  color: var(--accent-ink); background: color-mix(in srgb, var(--accent) 16%, white);
}
.segment:nth-child(2) .segment-icon { color: var(--accent2-ink); background: color-mix(in srgb, var(--accent2) 16%, white); }
.segment-icon svg { width: 21px; height: 21px; }
.segment-links { display: flex; flex-wrap: wrap; gap: 8px; }
.segment-links .ghost { font-size: 13px; padding: 6px 11px; }

@media (max-width: 900px) {
  .segments { grid-template-columns: 1fr; }
  .hero-deco { display: none; }
}

/* homepage tool tiles */
.tile-group h2 { font-size: 16px; margin: 2px 0 12px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.tile {
  display: block; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px;
  text-decoration: none; background: #fff;
  transition: border-color .1s ease, transform .1s ease, box-shadow .1s ease;
}
.tile:hover { border-color: var(--accent); transform: translateY(-1px); box-shadow: 0 6px 14px -10px color-mix(in srgb, var(--accent) 60%, transparent); }
.tile strong { display: block; color: var(--ink); font-size: 14px; margin-bottom: 2px; }
.tile span { color: var(--muted); font-size: 12.5px; line-height: 1.35; display: block; }

/* related tools block on tool pages */
.related h2 { font-size: 15px; margin: 0 0 10px; }
.related-links { display: flex; flex-wrap: wrap; gap: 8px; }
.related-links .ghost { font-size: 13px; padding: 6px 11px; }

/* site-wide footer sitemap */
.sitemap { border-top: 1px solid var(--line); background: var(--paper); }
.sitemap-in {
  max-width: 1180px; margin: 0 auto; padding: 22px 18px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px;
}
.sitemap-col h3 { font-size: 12.5px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 0 0 8px; }
.sitemap-col ul { list-style: none; margin: 0; padding: 0; }
.sitemap-col li { margin: 0 0 5px; }
.sitemap-col a { color: var(--ink); text-decoration: none; font-size: 13px; }
.sitemap-col a:hover { color: var(--accent-ink); text-decoration: underline; }

footer { max-width: 1180px; margin: 0 auto; padding: 26px 18px 50px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); }
footer a { color: var(--muted); text-decoration: none; margin-right: 14px; }
footer a:hover { color: var(--ink); }
footer button.linklike { background: none; border: none; padding: 0; margin-right: 14px; color: var(--muted); font: inherit; cursor: pointer; text-decoration: none; }
footer button.linklike:hover { color: var(--ink); }

/* ---- modal (custom, never alert()/confirm() — rule 12; one at a time — rule 5) ---- */
.veil { position: fixed; inset: 0; background: rgba(17, 24, 32, .5); display: none; align-items: center; justify-content: center; z-index: 40; padding: 18px; }
.veil.open { display: flex; }
.modal { background: #fff; border-radius: 12px; max-width: 440px; width: 100%; padding: 24px; }
.modal h3 { margin: 0 0 6px; }
.modal p { color: var(--muted); font-size: 14px; }
.plans { display: flex; gap: 10px; margin: 16px 0 4px; }
.plan { flex: 1; border: 1px solid var(--line); border-radius: 9px; padding: 12px; text-align: center; }
.plan b { display: block; font-size: 20px; }
.plan span { font-size: 12px; color: var(--muted); }
.close { float: right; border: none; background: none; font-size: 20px; cursor: pointer; color: var(--muted); }

/* ---- cookie consent banner ---- */
.consent { position: fixed; left: 0; right: 0; bottom: 0; z-index: 50; background: var(--paper); border-top: 1px solid var(--line); box-shadow: 0 -2px 12px rgba(17, 24, 32, .08); }
.consent.hidden { display: none; }
.consent-in { max-width: 1180px; margin: 0 auto; padding: 16px 18px; display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.consent-in p { margin: 0; color: var(--muted); font-size: 13.5px; flex: 1 1 320px; }
.consent-actions { display: flex; gap: 10px; flex: none; }

@media (max-width: 900px) {
  .wrap { grid-template-columns: 1fr; }
  .rail { flex-direction: row; }
  .ad.tall { min-height: 90px; flex: 1; }
}