/*
 * Web-tools shared shell (XLS-194) — the design system every page-per-need
 * upload surface rides. One stylesheet, both product lanes (xlsx core +
 * Shopify skills). Visual language: the house app-card chrome + plain-language
 * status vocabulary, on the xlsx-for-ai green brand accent.
 *
 * A page supplies only its copy + its compound-chain logic (shell.js); the
 * chrome, the upload widget, the running/result/error states, and the
 * "what I did / what I couldn't touch" ledger all live here.
 */

:root {
  --ink: #1a1a1a;
  --muted: #5a5a5a;
  --faint: #8a8a8a;
  --bg: #f4f3ef;
  --card: #ffffff;
  --line: #e6e6e3;
  --accent: #107c41;          /* xlsx-for-ai brand green */
  --accent-soft: #e9f5ee;
  --accent-ink: #0b5c30;
  --flag: #c2610c;            /* attention / error rows */
  --flag-soft: #fdf1e5;
  --info: #2563eb;
  --info-soft: #eaf0fe;
  --code-bg: #f5f5f5;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  font-size: 0.9em;
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 3px;
}

.wrap { max-width: 820px; margin: 0 auto; padding: 0 24px; }

/* ---- page chrome (matches the marketing site) ---- */
header.site {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; }
header.site .logo { font-weight: 700; font-size: 18px; color: var(--ink); }
header.site .logo .x { color: var(--accent); }
header.site nav a { color: var(--muted); margin-left: 22px; font-size: 14px; }
header.site nav a:hover { color: var(--ink); text-decoration: none; }

footer.site {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  color: var(--muted);
  font-size: 13px;
  margin-top: 64px;
}
footer.site .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
footer.site a { color: var(--muted); }
footer.site .links a { margin-left: 16px; }
footer.site a:hover { color: var(--ink); }

/* ---- shared MCP-adoption section (XLS-221): the free-tool -> agent funnel ---- */
/* Per-page unique pitch prose ships as a hidden .xfa-mcp-copy block; shell.js
   relocates it into .xfa-mcp and drops the source. Keep it hidden pre-JS. */
.xfa-mcp-copy { display: none; }
.xfa-mcp {
  border-top: 1px solid var(--line);
  background: var(--accent-soft);
  padding: 44px 0;
}
.xfa-mcp h2 { margin: 0 0 12px; font-size: 20px; color: var(--accent-ink); }
.xfa-mcp p { margin: 0 0 14px; color: var(--ink); font-size: 15px; }
.xfa-mcp .xfa-mcp-cmd {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px 16px;
  overflow-x: auto;
  margin: 0 0 14px;
}
.xfa-mcp .xfa-mcp-cmd code {
  background: none;
  padding: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
  white-space: pre;
}
.xfa-mcp .xfa-mcp-fn { margin: 0 0 14px; }
.xfa-mcp .xfa-mcp-fn-label {
  font-size: 12.5px; font-weight: 650; text-transform: uppercase;
  letter-spacing: .04em; color: var(--muted); margin: 0 0 6px;
}
.xfa-mcp .xfa-mcp-fn p { margin: 0 0 8px; }
.xfa-mcp .xfa-mcp-fn code {
  background: var(--code-bg); border: 1px solid var(--line);
  border-radius: 4px; padding: 1px 5px; font-size: 13px; color: var(--ink);
}
.xfa-mcp .xfa-mcp-fn ul { margin: 8px 0 0; padding-left: 20px; }
.xfa-mcp .xfa-mcp-fn li { color: var(--ink); font-size: 14px; margin: 0 0 5px; }
.xfa-mcp .xfa-mcp-eg-label {
  font-size: 12.5px; font-weight: 650; text-transform: uppercase;
  letter-spacing: .04em; color: var(--muted); margin: 14px 0 6px;
}
.xfa-mcp .xfa-mcp-eg {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 11px 14px;
  overflow-x: auto;
  margin: 0 0 6px;
}
.xfa-mcp .xfa-mcp-eg code {
  background: none; border: 0; padding: 0;
  font-size: 13px; line-height: 1.6; color: var(--ink);
  white-space: pre-wrap;
}
.xfa-mcp .xfa-mcp-more { margin: 12px 0 0; font-size: 15px; font-weight: 600; }

/* ---- hero (page-per-need headline) ---- */
main { padding: 52px 0 40px; }
.hero { margin-bottom: 30px; }
.hero .eyebrow {
  font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent-ink); font-weight: 700; margin-bottom: 12px;
}
.hero h1 { font-size: 36px; line-height: 1.15; margin: 0 0 14px; letter-spacing: -0.02em; }
.hero .lede { font-size: 18.5px; color: var(--muted); margin: 0; max-width: 660px; }
.hero .free-pill {
  display: inline-flex; align-items: center; gap: 7px; margin-top: 18px;
  background: var(--accent-soft); color: var(--accent-ink);
  border-radius: 999px; padding: 7px 14px; font-size: 13.5px; font-weight: 650;
}
.hero .free-pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.hero .pill-note { color: var(--muted); font-size: 13.5px; margin-top: 14px; }

/* ---- the tool card ---- */
.tool {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  box-shadow: 0 14px 44px rgba(20,24,29,.06); overflow: hidden;
}
.tool .topbar {
  display: flex; align-items: center; gap: 9px;
  padding: 14px 20px; border-bottom: 1px solid var(--line); background: #fbfbf9;
}
.tool .dot { width: 10px; height: 10px; border-radius: 50%; background: #d7d7d2; }
.tool .topbar .label { margin-left: 8px; font-size: 12.5px; color: var(--faint); font-weight: 600; }
.tool .panel { padding: 30px 34px 34px; }

/* dropzone */
.dropzone {
  border: 2px dashed #cfd6cf; border-radius: 14px; background: #fbfcfb;
  padding: 46px 28px; text-align: center; cursor: pointer;
  transition: border-color .15s ease, background .15s ease;
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); background: var(--accent-soft); }
.dropzone .icon { font-size: 34px; line-height: 1; }
.dropzone .big { font-size: 18px; font-weight: 700; margin: 14px 0 6px; }
.dropzone .small { color: var(--muted); font-size: 14px; }
.dropzone .pick { color: var(--accent); font-weight: 650; text-decoration: underline; }
.dropzone input[type=file] { display: none; }
.reassure { margin-top: 16px; font-size: 13px; color: var(--accent-ink); text-align: center; font-weight: 600; }
.reassure::before { content: "\1F512  "; }

/* dual-upload mode (XLS-197): two side-by-side zones feeding one process() */
.dual { display: flex; gap: 14px; }
.dual .dz { flex: 1; padding: 34px 20px; position: relative; }
.dz .dzlabel {
  font-size: 11px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase;
  color: var(--faint); margin-bottom: 10px;
}
.dropzone.chosen { border-style: solid; border-color: var(--accent); background: var(--accent-soft); }
.dropzone.chosen .big { color: var(--accent-ink); word-break: break-all; }
.dropzone.chosen .dzlabel { color: var(--accent-ink); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary:disabled:hover { background: var(--ink); }

/* running */
.running { text-align: center; padding: 48px 24px; }
.spinner {
  width: 34px; height: 34px; border-radius: 50%; margin: 0 auto 18px;
  border: 3px solid var(--accent-soft); border-top-color: var(--accent);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.running .lead { font-size: 17px; font-weight: 650; }
.running .file { color: var(--muted); font-size: 14px; margin-top: 8px; }
.running .steps { margin: 20px auto 0; max-width: 360px; text-align: left; }
.running .steps li { color: var(--faint); font-size: 13.5px; margin: 5px 0; list-style: none; }
.running .steps li.on { color: var(--accent-ink); font-weight: 650; }
.running .steps li.done { color: var(--muted); }
.running .steps li .m { display: inline-block; width: 20px; }

/* result summary strip */
.summary { display: flex; gap: 10px; margin-bottom: 22px; }
.summary .cnt {
  flex: 1; text-align: center; border: 1.5px solid var(--line);
  border-radius: 12px; padding: 15px 8px;
}
.summary .cnt .n { font-size: 26px; font-weight: 800; letter-spacing: -.02em; }
.summary .cnt .l { font-size: 11px; font-weight: 700; color: var(--muted); margin-top: 4px; text-transform: uppercase; letter-spacing: .05em; }
.summary .cnt.bad { background: var(--flag-soft); border-color: #f2d3b3; }
.summary .cnt.bad .n, .summary .cnt.bad .l { color: var(--flag); }
.summary .cnt.ok { background: var(--accent-soft); border-color: #bfe2cd; }
.summary .cnt.ok .n, .summary .cnt.ok .l { color: var(--accent-ink); }

.result h2 { font-size: 19px; margin: 0 0 14px; letter-spacing: -.01em; }

/* itemized findings (error rows) */
.findings { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.finding { padding: 15px 17px; border-bottom: 1px solid var(--line); border-left: 3px solid transparent; }
.finding:last-child { border-bottom: none; }
.finding.attn { border-left-color: var(--flag); background: #fffdfb; }
.finding .head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.finding .cell { font-weight: 700; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13.5px; }
.finding .tok {
  font-size: 11.5px; font-weight: 800; letter-spacing: .03em;
  padding: 3px 8px; border-radius: 999px; background: var(--flag-soft); color: var(--flag);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.finding .tok.silent { background: var(--info-soft); color: var(--info); }
.finding .formula { margin: 9px 0 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; color: var(--muted); word-break: break-all; }
.finding .why { margin: 8px 0 0; font-size: 14px; color: var(--ink); }
.finding .why b { color: var(--flag); }

/* the plain-language ledger — reused by every data-changing page */
.ledger { margin-top: 24px; border: 1px solid var(--line); border-radius: 13px; overflow: hidden; }
.ledger .lhead { padding: 13px 18px; background: #fbfbf9; border-bottom: 1px solid var(--line); font-weight: 700; font-size: 14px; }
.ledger .lrow { display: flex; gap: 12px; padding: 13px 18px; border-bottom: 1px solid var(--line); font-size: 14px; }
.ledger .lrow:last-child { border-bottom: none; }
.ledger .lrow .k { flex: none; width: 22px; font-weight: 800; }
.ledger .lrow.did .k { color: var(--accent); }
.ledger .lrow.kept .k { color: var(--faint); }
.ledger .lrow .v b { font-weight: 650; }
.ledger .lrow.kept .v { color: var(--muted); }

/* buttons + notices */
.actions { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; }
.btn {
  font-weight: 650; font-size: 15px; padding: 13px 20px; border-radius: 11px;
  border: 1.5px solid var(--line); background: var(--card); color: var(--ink);
  cursor: pointer; text-align: center;
}
.btn.primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn:hover { text-decoration: none; }
.btn.primary:hover { background: #000; }
a.btn { display: inline-block; }

/* funnel-CTA panel (XLS-210/211): export pages have no upload widget — the tool
   card holds a call-to-action that links to the authenticated app export surface */
.tool .panel .cta-h { font-size: 20px; margin: 0 0 12px; letter-spacing: -.01em; }
.tool .panel .cta-p { color: #333; margin: 0 0 20px; }
.tool .panel .cta-actions { margin: 0 0 14px; }
.tool .panel .cta-note { font-size: 13.5px; color: var(--muted); margin: 0; }

.notice { border-radius: 12px; padding: 15px 18px; font-size: 14px; line-height: 1.55; margin-top: 4px; }
.notice.err { background: var(--flag-soft); color: #8a4b16; }
.notice.err b { color: #7a3d0a; }
.notice.info { background: var(--info-soft); color: #1f3a8a; }

.hidden { display: none !important; }

/* ---- params-UI form (XLS-200): dynamic field + repeat builder ---- */
.params .pfile {
  display: inline-block; font-size: 13px; font-weight: 650; color: var(--accent-ink);
  background: var(--accent-soft); border-radius: 999px; padding: 6px 14px; margin-bottom: 22px;
  word-break: break-all;
}
.pform { display: flex; flex-direction: column; gap: 18px; }
.pf { display: block; }
.pf .pl { display: block; font-size: 12.5px; font-weight: 700; color: var(--muted); margin-bottom: 6px; }
.pform select,
.pform input[type=text] {
  width: 100%; font: inherit; font-size: 15px; color: var(--ink);
  border: 1.5px solid var(--line); border-radius: 10px; padding: 11px 12px; background: var(--card);
}
.pform select:focus,
.pform input[type=text]:focus { outline: none; border-color: var(--accent); }

.pgroup { border: 1px solid var(--line); border-radius: 13px; padding: 16px 16px 14px; background: #fbfcfb; }
.pgroup .pgl { font-size: 13px; font-weight: 700; color: var(--ink); margin-bottom: 12px; }
.prows { display: flex; flex-direction: column; gap: 10px; }
.prow { display: flex; gap: 10px; align-items: flex-end; }
.prow .pf { flex: 1; min-width: 0; }
.prow-x {
  flex: none; width: 40px; height: 44px; border: 1.5px solid var(--line); border-radius: 10px;
  background: var(--card); color: var(--faint); font-size: 20px; line-height: 1; cursor: pointer;
}
.prow-x:hover { border-color: var(--flag); color: var(--flag); }
.prepeat > .btn.small { margin-top: 12px; }
.btn.small { font-size: 13px; padding: 8px 14px; border-radius: 9px; }

.pcheck { display: flex; align-items: center; gap: 8px; font-size: 14.5px; margin: 7px 0; cursor: pointer; }
.pcheck input { width: 16px; height: 16px; accent-color: var(--accent); }

/* raw tool output (XLS-216 run-any-tool) — verbatim text result */
.tool-output {
  margin: 16px 0 0; padding: 16px 18px; background: var(--code-bg);
  border: 1px solid var(--line); border-radius: 10px;
  font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--ink); white-space: pre; overflow-x: auto; max-height: 460px;
}

/* read-only preview grid (XLS-217): first N rows of a sheet as a plain table.
   Horizontal scroll for wide sheets; sticky distinguished header; no inputs. */
.grid-wrap {
  margin: 16px 0 0; border: 1px solid var(--line); border-radius: 10px;
  overflow: auto; max-height: 460px;
}
.preview-grid { border-collapse: collapse; width: 100%; font-size: 13px; }
.preview-grid th, .preview-grid td {
  padding: 7px 11px; text-align: left; white-space: nowrap;
  border-bottom: 1px solid var(--line); border-right: 1px solid var(--line);
}
.preview-grid th:last-child, .preview-grid td:last-child { border-right: 0; }
.preview-grid tbody tr:last-child td { border-bottom: 0; }
.preview-grid thead th {
  position: sticky; top: 0; z-index: 1; background: #fbfbf9;
  font-weight: 700; color: var(--ink); border-bottom: 2px solid var(--line);
}
.preview-grid tbody td { color: var(--muted); }
.grid-note { margin: 8px 2px 0; font-size: 12.5px; color: var(--faint); }

/* below-the-fold explanatory prose (SEO body) */
.prose { margin-top: 56px; }
.prose h2 { font-size: 22px; margin: 36px 0 12px; border-top: 1px solid var(--line); padding-top: 28px; letter-spacing: -.01em; }
.prose h2:first-child { border-top: 0; padding-top: 0; }
.prose p { color: #333; }
.prose ul { padding-left: 22px; }
.prose li { margin: 6px 0; }
.prose .muted { color: var(--muted); font-size: 14px; }

@media (max-width: 620px) {
  .hero h1 { font-size: 28px; }
  .tool .panel { padding: 22px 18px 26px; }
  .summary { flex-wrap: wrap; }
  .summary .cnt { min-width: 44%; }
  .dual { flex-direction: column; }
  .prow { flex-wrap: wrap; }
  .prow .pf { flex-basis: calc(50% - 5px); }
}