/* Inventory calculator page — slate + indigo with highlighter yellow, grid-paper hero, spreadsheet-style tool with mode tabs */
.ic-page { --ic-ink:#0f172a; --ic-slate:#334155; --ic-indigo:#4338ca; --ic-indigo-l:#eef2ff; --ic-hl:#fde047; --ic-line:#e2e8f0; --ic-muted:#475569; color:var(--ic-ink); }
.ic-page p { color:var(--ic-muted); line-height:1.75; }
.ic-wrap { max-width:1140px; margin:0 auto; padding:0 16px; }
.ic-hero { padding:26px 0 56px; background-color:#f8fafc; background-image:linear-gradient(#e9eef5 1px,transparent 1px),linear-gradient(90deg,#e9eef5 1px,transparent 1px); background-size:28px 28px; border-bottom:1px solid var(--ic-line); }
.ic-hero-in { max-width:860px; }
.ic-chip { display:inline-flex; align-items:center; gap:8px; background:#fff; border:1px solid var(--ic-line); border-radius:6px; padding:5px 12px; font-size:.8rem; font-weight:700; color:var(--ic-indigo); margin-bottom:16px; }
.ic-h1 { font-size:clamp(2rem,4.2vw,3rem); font-weight:900; line-height:1.14; margin:0 0 18px; color:var(--ic-ink); letter-spacing:-.5px; }
.ic-h1 mark { background:linear-gradient(transparent 58%,var(--ic-hl) 58%); color:inherit; padding:0 2px; }
.ic-hero p { font-size:1.05rem; margin:0 0 12px; }
.ic-ctas { display:flex; flex-wrap:wrap; gap:12px; margin-top:22px; }
.ic-btn { display:inline-flex; align-items:center; gap:8px; padding:13px 26px; border-radius:8px; font-weight:800; text-decoration:none; }
.ic-btn-p { background:var(--ic-indigo); color:#fff; box-shadow:0 6px 16px rgba(67,56,202,.22); }
.ic-btn-p:hover { background:#3730a3; color:#fff; }
.ic-btn-s { background:var(--ic-hl); color:var(--ic-ink); }
.ic-btn-s:hover { background:#facc15; color:var(--ic-ink); }

.ic-sheet { margin-top:-30px; position:relative; background:#fff; border:1px solid #cbd5e1; border-radius:12px; box-shadow:0 18px 44px rgba(15,23,42,.08); overflow:hidden; }
.ic-tabs { display:flex; background:#f1f5f9; border-bottom:1px solid #cbd5e1; overflow-x:auto; }
.ic-tabs button { border:0; border-right:1px solid #cbd5e1; background:transparent; padding:14px 20px; font-weight:750; color:var(--ic-slate); cursor:pointer; white-space:nowrap; font-size:.92rem; }
.ic-tabs button.act { background:#fff; color:var(--ic-indigo); box-shadow:inset 0 3px 0 var(--ic-indigo); }
.ic-body { display:grid; grid-template-columns:1.1fr .9fr; }
.ic-in { padding:26px; border-right:1px solid var(--ic-line); }
.ic-in h2, .ic-out h2 { font-size:1.08rem; font-weight:850; margin:0 0 6px; color:var(--ic-ink); }
.ic-in > p { font-size:.88rem; margin:0 0 16px; }
.ic-grid { display:grid; grid-template-columns:28px 1fr 150px; border:1px solid var(--ic-line); border-radius:8px; overflow:hidden; }
.ic-grid > * { border-bottom:1px solid var(--ic-line); padding:10px 12px; display:flex; align-items:center; font-size:.9rem; }
.ic-grid .n { justify-content:center; background:#f8fafc; color:#94a3b8; font-size:.75rem; font-weight:700; padding:10px 0; border-right:1px solid var(--ic-line); }
.ic-grid label { margin:0; font-weight:650; color:var(--ic-ink); }
.ic-grid input { width:100%; border:0; background:#fffef0; text-align:right; font-family:ui-monospace,Menlo,monospace; font-size:.95rem; padding:6px 8px; border-radius:4px; }
.ic-grid input:focus { outline:2px solid var(--ic-indigo); background:#fff; }
.ic-grid .last { border-bottom:0; }
.ic-cur { display:flex; align-items:center; gap:8px; font-size:.82rem; margin:0 0 12px; color:var(--ic-muted); }
.ic-cur select { border:1px solid var(--ic-line); border-radius:6px; padding:4px 8px; background:#fff; }
.ic-go { margin-top:16px; border:0; background:var(--ic-ink); color:#fff; padding:13px 24px; border-radius:8px; font-weight:800; cursor:pointer; width:100%; }
.ic-go:hover { background:var(--ic-indigo); }
.ic-err { display:none; color:#b91c1c; font-size:.86rem; margin-top:10px; }
.ic-out { padding:26px; background:#fbfcff; }
.ic-big { background:var(--ic-indigo); color:#fff; border-radius:10px; padding:18px; margin:10px 0 12px; }
.ic-big small { display:block; color:#c7d2fe; font-size:.82rem; font-weight:600; }
.ic-big b { display:block; font-size:2.3rem; font-weight:900; line-height:1.1; font-family:ui-monospace,Menlo,monospace; }
.ic-rows { border:1px solid var(--ic-line); border-radius:8px; overflow:hidden; background:#fff; }
.ic-rows div { display:flex; justify-content:space-between; gap:10px; padding:10px 12px; border-bottom:1px solid var(--ic-line); font-size:.9rem; }
.ic-rows div:last-child { border-bottom:0; }
.ic-rows span:last-child { font-family:ui-monospace,Menlo,monospace; font-weight:700; color:var(--ic-ink); }
.ic-note { margin-top:12px; background:#fefce8; border-left:4px solid var(--ic-hl); border-radius:0 8px 8px 0; padding:12px 14px; font-size:.9rem; color:#422006; line-height:1.6; }
.ic-idle { color:#94a3b8; }

.ic-sec { padding:64px 0; }
.ic-sec.grey { background:#f8fafc; border-top:1px solid var(--ic-line); border-bottom:1px solid var(--ic-line); }
.ic-h2 { font-size:clamp(1.45rem,2.6vw,1.95rem); font-weight:900; margin:0 0 14px; color:var(--ic-ink); }
.ic-h2 mark { background:linear-gradient(transparent 60%,var(--ic-hl) 60%); color:inherit; padding:0 2px; }
.ic-lede { max-width:780px; }
.ic-modes { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin-top:24px; }
.ic-mode { background:#fff; border:1px solid var(--ic-line); border-radius:12px; padding:22px; }
.ic-mode .tag { display:inline-block; font-size:.72rem; font-weight:800; letter-spacing:.08em; text-transform:uppercase; color:var(--ic-indigo); background:var(--ic-indigo-l); border-radius:4px; padding:3px 8px; margin-bottom:10px; }
.ic-mode h3 { font-size:1.05rem; font-weight:850; margin:0 0 8px; color:var(--ic-ink); }
.ic-mode p { margin:0 0 10px; font-size:.93rem; }
.ic-mode code { display:block; background:#f8fafc; border:1px dashed #cbd5e1; border-radius:6px; padding:9px 10px; font-size:.82rem; color:var(--ic-slate); white-space:normal; }
.ic-ex { display:grid; grid-template-columns:1fr 1fr; gap:34px; align-items:start; }
.ic-table { width:100%; border-collapse:collapse; background:#fff; font-size:.92rem; border:1px solid var(--ic-line); }
.ic-table th { background:#f1f5f9; text-align:left; padding:10px 12px; font-weight:800; color:var(--ic-slate); border-bottom:1px solid #cbd5e1; }
.ic-table td { padding:10px 12px; border-bottom:1px solid var(--ic-line); }
.ic-table td:last-child, .ic-table th:last-child { text-align:right; font-family:ui-monospace,Menlo,monospace; }
.ic-table tr.tot td { font-weight:850; background:#fefce8; }
.ic-list { list-style:none; padding:0; margin:20px 0 0; display:grid; grid-template-columns:1fr 1fr; gap:14px 28px; }
.ic-list li { position:relative; padding-left:28px; color:var(--ic-muted); line-height:1.7; }
.ic-list li::before { content:"\2713"; position:absolute; left:0; top:0; color:var(--ic-indigo); font-weight:900; }
.ic-list b { color:var(--ic-ink); }
.ic-cta { display:grid; grid-template-columns:1fr auto; gap:26px; align-items:center; background:var(--ic-indigo-l); border:1px solid #c7d2fe; border-radius:16px; padding:38px; }
.ic-cta h2 { margin-bottom:8px; }
.ic-cta p { margin:0; }
.ic-faq { max-width:880px; }
.ic-faq details { border:1px solid var(--ic-line); border-radius:10px; margin-bottom:10px; background:#fff; }
.ic-faq summary { list-style:none; cursor:pointer; padding:16px 18px; font-weight:800; color:var(--ic-ink); display:flex; justify-content:space-between; gap:12px; }
.ic-faq summary::-webkit-details-marker { display:none; }
.ic-faq summary::after { content:"\25BE"; color:var(--ic-indigo); }
.ic-faq details[open] summary { background:#fefce8; border-radius:10px 10px 0 0; }
.ic-faq details[open] summary::after { content:"\25B4"; }
.ic-faq details p { padding:12px 18px 16px; margin:0; }
.ic-tools { display:grid; grid-template-columns:repeat(3,1fr); gap:10px; margin-top:18px; }
.ic-tools a { display:flex; justify-content:space-between; align-items:center; gap:10px; padding:14px 16px; border:1px solid var(--ic-line); border-radius:10px; text-decoration:none; color:var(--ic-ink); font-weight:750; font-size:.92rem; background:#fff; }
.ic-tools a::after { content:"\2192"; color:var(--ic-indigo); }
.ic-tools a:hover { border-color:var(--ic-indigo); background:var(--ic-indigo-l); }

@media (max-width:991px) {
  .ic-body, .ic-ex, .ic-cta { grid-template-columns:1fr; }
  .ic-in { border-right:0; border-bottom:1px solid var(--ic-line); }
  .ic-modes, .ic-tools { grid-template-columns:1fr 1fr; }
}
@media (max-width:575px) {
  .ic-modes, .ic-tools, .ic-list { grid-template-columns:1fr; }
  .ic-grid { grid-template-columns:24px 1fr 110px; }
  .ic-grid > * { padding:9px 8px; font-size:.85rem; }
  .ic-in, .ic-out { padding:20px 16px; }
  .ic-cta { padding:26px 18px; }
  .ic-sec { padding:48px 0; }
  .ic-tabs button { padding:12px 14px; font-size:.85rem; }
}