/* Shopify CSV checker — studio palette: ink #15222b, blue #1754df, lime #d8f76a, light #f6f8fa */
:root {
  --bg: #f6f8fa; --surface: #ffffff; --ink: #15222b; --muted: #5b6b76; --line: #e3e8ee;
  --blue: #1754df; --blue-ink: #ffffff; --lime: #d8f76a; --hero: #15222b; --hero-ink: #f3f7f9; --hero-muted: #a9bac4;
  --err: #d92d20; --err-bg: #fef3f2; --warn: #b54708; --warn-bg: #fffaeb; --note: #1754df; --note-bg: #eef3ff; --ok: #067647; --ok-bg: #ecfdf3;
  --radius: 14px; --shadow: 0 1px 2px rgba(21,34,43,.06), 0 8px 24px rgba(21,34,43,.08);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111c23; --surface: #182731; --ink: #eef3f6; --muted: #9aabb6; --line: #243540;
    --blue: #6d95ff; --blue-ink: #0d161c; --hero: #0a1116; --hero-ink: #eef3f6; --hero-muted: #9aabb6;
    --err: #ff7a6e; --err-bg: #2b1614; --warn: #f5b547; --warn-bg: #2a2111; --note: #8aa8ff; --note-bg: #16213b; --ok: #6ce9a6; --ok-bg: #0f2a1d;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.3);
  }
}
:root[data-theme="dark"] {
  --bg: #111c23; --surface: #182731; --ink: #eef3f6; --muted: #9aabb6; --line: #243540;
  --blue: #6d95ff; --blue-ink: #0d161c; --hero: #0a1116; --hero-ink: #eef3f6; --hero-muted: #9aabb6;
  --err: #ff7a6e; --err-bg: #2b1614; --warn: #f5b547; --warn-bg: #2a2111; --note: #8aa8ff; --note-bg: #16213b; --ok: #6ce9a6; --ok-bg: #0f2a1d;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--blue); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
[hidden] { display: none !important; }
code { font: 0.9em ui-monospace, "Cascadia Code", Consolas, monospace; background: var(--bg); border: 1px solid var(--line); padding: 1px 6px; border-radius: 6px; word-break: break-word; }

/* top bar */
.hero { background: radial-gradient(900px 420px at 88% -12%, rgba(23,84,223,.45), transparent 70%), radial-gradient(600px 300px at 5% 110%, rgba(216,247,106,.10), transparent 70%), var(--hero); color: var(--hero-ink); padding-bottom: 64px; }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 18px 0; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--hero-ink); text-decoration: none; font-weight: 700; letter-spacing: -0.01em; }
.brand .mark { width: 30px; height: 30px; border-radius: 8px; background: var(--lime); color: #15222b; display: grid; place-items: center; font-weight: 800; }
.lang { position: relative; }
.lang summary { list-style: none; cursor: pointer; color: var(--hero-ink); border: 1px solid rgba(255,255,255,.18); border-radius: 999px; padding: 6px 14px; font-size: 14px; }
.lang summary::-webkit-details-marker { display: none; }
.lang ul { position: absolute; right: 0; top: calc(100% + 6px); margin: 0; padding: 6px; list-style: none; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); z-index: 5; min-width: 160px; }
.lang li a { display: block; padding: 7px 12px; border-radius: 8px; color: var(--ink); text-decoration: none; font-size: 15px; }
.lang li a:hover, .lang li a[aria-current="true"] { background: var(--bg); }

/* hero */
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; padding-top: 28px; }
.badge { display: inline-block; font-size: 13px; font-weight: 600; color: #15222b; background: var(--lime); border-radius: 999px; padding: 4px 12px; margin-bottom: 18px; }
h1 { font-size: clamp(30px, 5vw, 50px); line-height: 1.08; margin: 0 0 16px; letter-spacing: -0.03em; }
.lead { color: var(--hero-muted); font-size: 18px; margin: 0; }
.drop-card { background: var(--surface); color: var(--ink); border-radius: 20px; padding: 18px; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.drop { display: grid; justify-items: center; gap: 6px; text-align: center; border: 2px dashed color-mix(in srgb, var(--blue) 45%, var(--line)); border-radius: 14px; padding: 36px 16px; cursor: pointer; transition: background .15s, border-color .15s; }
.drop:hover, .drop.over, .drop:focus-visible { border-color: var(--blue); background: color-mix(in srgb, var(--blue) 6%, transparent); outline: none; }
.drop svg { width: 44px; height: 44px; color: var(--blue); }
.drop strong { font-size: 19px; }
.drop span { color: var(--muted); font-size: 15px; }
.drop-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; margin-top: 14px; }
.privacy { display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 13px; }
.privacy svg { width: 16px; height: 16px; flex: none; color: var(--ok); }

button, .btn { font: inherit; font-weight: 600; font-size: 15px; border-radius: 10px; padding: 10px 16px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer; text-decoration: none; display: inline-block; }
button:hover { border-color: var(--blue); }
.btn-primary { background: var(--blue); color: var(--blue-ink); border-color: var(--blue); }

/* checks */
.checks { margin-top: -28px; }
.checks-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px 22px; }
.checks-card h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 12px; }
.checks-card ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px 20px; }
.checks-card li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; }
.checks-card li::before { content: ""; flex: none; width: 18px; height: 18px; margin-top: 3px; border-radius: 50%; background: var(--lime) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3 3 7-7' stroke='%2315222b' stroke-width='2.4' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat; }

/* results */
#results { margin: 40px auto; scroll-margin-top: 16px; }
#results h2 { font-size: 22px; margin: 0 0 14px; word-break: break-word; }
.verdict { border-radius: var(--radius); padding: 14px 18px; margin-bottom: 16px; font-weight: 600; }
.verdict.bad { background: var(--err-bg); color: var(--err); }
.verdict.warn { background: var(--warn-bg); color: var(--warn); }
.verdict.good { background: var(--ok-bg); color: var(--ok); }
.summary { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-bottom: 18px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; }
.stat b { display: block; font-size: 26px; line-height: 1.1; font-variant-numeric: tabular-nums; }
.stat small { color: var(--muted); font-size: 13px; }
.stat.err b { color: var(--err); } .stat.warn b { color: var(--warn); } .stat.note b { color: var(--note); }
.issue { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--line); border-radius: 10px; padding: 12px 14px; margin-bottom: 8px; }
.issue.error { border-left-color: var(--err); } .issue.warning { border-left-color: var(--warn); } .issue.note { border-left-color: var(--note); }
.issue .meta { font-size: 13px; color: var(--muted); margin-top: 2px; }
.lvl { display: inline-block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; border-radius: 6px; padding: 1px 7px; margin-right: 8px; vertical-align: 1px; }
.error .lvl { color: var(--err); background: var(--err-bg); } .warning .lvl { color: var(--warn); background: var(--warn-bg); } .note .lvl { color: var(--note); background: var(--note-bg); }
.more { color: var(--muted); font-size: 14px; margin: 8px 0 0; }
.results-actions { margin-top: 14px; }
.cta { background: var(--hero); color: var(--hero-ink); border-radius: 18px; padding: 26px; margin: 28px 0; }
.cta h2 { margin: 0 0 8px; font-size: 22px; }
.cta p { margin: 0 0 18px; color: var(--hero-muted); }
.cta .btn-primary { background: var(--lime); color: #15222b; border-color: var(--lime); }

/* faq */
.faq { margin: 56px auto; max-width: 820px; }
.faq h2 { font-size: clamp(22px, 3.4vw, 28px); letter-spacing: -0.02em; margin: 0 0 16px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 8px; }
.faq summary { cursor: pointer; font-weight: 600; padding: 14px 18px; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--muted); font-weight: 400; font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0; padding: 0 18px 16px; color: var(--muted); }
footer { border-top: 1px solid var(--line); padding: 24px 0 48px; color: var(--muted); font-size: 14px; }

@media (max-width: 820px) {
  .hero-grid { grid-template-columns: 1fr; gap: 26px; }
  .checks-card ul { grid-template-columns: 1fr 1fr; }
  .summary { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 520px) {
  .checks-card ul { grid-template-columns: 1fr; }
  .summary { grid-template-columns: repeat(2, 1fr); }
  .drop { padding: 26px 12px; }
}

/* converter */
.crosslink { margin: 18px 0 0; }
.crosslink a { color: var(--lime); font-weight: 600; text-decoration: none; }
.crosslink a:hover { text-decoration: underline; }
.form-error { color: var(--err); font-size: 14px; margin: 8px 0 0; min-height: 1em; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px; margin: 32px 0; scroll-margin-top: 16px; }
.panel h2 { font-size: 20px; margin: 0 0 16px; }
.panel h2 small { color: var(--muted); font-weight: 400; font-size: 14px; margin-left: 8px; word-break: break-all; }
.fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.field { display: grid; gap: 6px; align-content: start; font-size: 14px; font-weight: 600; }
.field small { color: var(--muted); font-weight: 400; }
.field select { font: inherit; font-weight: 400; padding: 9px 10px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); width: 100%; }
.confirm { display: flex; gap: 10px; align-items: flex-start; margin: 18px 0 0; font-size: 15px; }
.confirm input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--blue); }
.row-actions { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin-top: 16px; }
.row-actions .form-error { margin: 0; }
button.btn-primary { background: var(--blue); color: var(--blue-ink); border-color: var(--blue); }
.summary-3 { grid-template-columns: repeat(3, 1fr); }
.stat.warn b { color: var(--warn); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); margin: 12px 0; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; background: var(--bg); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
#result h3 { font-size: 17px; margin: 26px 0 0; }
#result { margin: 32px 0; scroll-margin-top: 16px; }
@media (max-width: 520px) { .summary-3 { grid-template-columns: repeat(3, 1fr); } .panel { padding: 16px; } }

/* csv fixer */
.summary-4 { grid-template-columns: repeat(4, 1fr); margin-top: 18px; }
.stat .stat-text { font-size: 17px; margin-top: 2px; word-break: break-word; }
.stat.warn .stat-text { color: var(--warn); }
#result .verdict { margin: 0 0 10px; }
@media (max-width: 820px) { .summary-4 { grid-template-columns: repeat(2, 1fr); } }

.fixer-link { margin: -6px 0 16px; font-weight: 600; }
.fields-single { margin-top: 14px; max-width: 320px; }

/* gtin checker */
.drop-card textarea { font: 14px/1.5 ui-monospace, Consolas, monospace; padding: 10px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); width: 100%; resize: vertical; }
.drop-small { padding: 16px; margin-top: 12px; }
.drop-small strong { font-size: 16px; }
.drop-card > .privacy { margin-top: 8px; }
.calc input { font: 18px ui-monospace, Consolas, monospace; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); width: 100%; }
.calc-out { font: 600 17px ui-monospace, Consolas, monospace; color: var(--ok); margin: 10px 0 0; min-height: 1.4em; }
.pill { display: inline-block; font-size: 12px; font-weight: 700; border-radius: 999px; padding: 2px 9px; white-space: nowrap; }
.pill.ok { color: var(--ok); background: var(--ok-bg); } .pill.err { color: var(--err); background: var(--err-bg); } .pill.warn { color: var(--warn); background: var(--warn-bg); }
.stat.err b { color: var(--err); }