/* ==========================================================================
   FlexSpace.direct — design system
   Industrial, engineering-forward: warm paper ground, charcoal steel chrome,
   safety-amber accent used sparingly, blueprint blue for interactive.
   ========================================================================== */
:root {
  --ink: #171a1e;
  --ink-soft: #3c424a;
  --muted: #6b7280;
  --paper: #f5f4f0;
  --card: #ffffff;
  --line: #e3dfd7;
  --line-strong: #cfc9be;
  --steel: #1f242b;
  --steel-2: #2a303a;
  --steel-text: #c9cdd4;
  --amber: #e07b1f;
  --amber-dark: #b96214;
  --amber-soft: #fdf1e3;
  --blue: #33608a;
  --blue-dark: #274b6d;
  --blue-soft: #e9f0f6;
  --green: #3e7a4e;
  --green-soft: #e9f2ec;
  --danger: #a33d2f;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(23,26,30,.06), 0 8px 24px -12px rgba(23,26,30,.18);
  --shadow-lg: 0 2px 4px rgba(23,26,30,.08), 0 24px 48px -16px rgba(23,26,30,.28);
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: Consolas, "SF Mono", Menlo, monospace;
  --maxw: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--font); color: var(--ink);
  background: var(--paper); font-size: 16px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(1.9rem, 4vw, 2.9rem); }
h2 { font-size: clamp(1.4rem, 2.6vw, 2rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
.small { font-size: .85rem; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); }
.nowrap { white-space: nowrap; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.wrap-narrow { max-width: 880px; margin: 0 auto; padding: 0 20px; }

/* ---------- kickers / badges ---------- */
.kicker {
  display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--amber-dark); margin-bottom: .6em;
}
.kicker.blue { color: var(--blue); }
.badge {
  display: inline-block; font-size: .68rem; font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase; padding: .18em .55em; border-radius: 4px; vertical-align: middle;
}
.badge-illus { background: var(--amber-soft); color: var(--amber-dark); border: 1px solid #f0d9bc; }
.badge-demo { background: var(--blue-soft); color: var(--blue-dark); border: 1px solid #cddced; }
.badge-cat { background: #eef0f3; color: var(--ink-soft); }
.badge-example { background: #f3f4f6; color: var(--muted); border: 1px dashed var(--line-strong); }
.badge-green { background: var(--green-soft); color: var(--green); }

/* ---------- header ---------- */
.site-header {
  background: var(--steel); color: #fff; position: sticky; top: 0; z-index: 60;
  border-bottom: 3px solid var(--amber);
}
.site-header .bar { display: flex; align-items: center; gap: 18px; height: 62px; }
.logo { display: flex; align-items: baseline; gap: 2px; font-weight: 800; font-size: 1.25rem; letter-spacing: -.02em; color: #fff; text-decoration: none; }
.logo:hover { text-decoration: none; color: #fff; }
.logo .tld { color: var(--amber); font-weight: 700; }
.logo .mark { width: 26px; height: 26px; margin-right: 8px; align-self: center; flex: 0 0 auto; }
nav.main-nav { display: flex; gap: 2px; margin-left: auto; }
nav.main-nav a {
  color: var(--steel-text); font-size: .84rem; font-weight: 600; padding: 8px 11px;
  border-radius: 6px; text-decoration: none; white-space: nowrap;
}
nav.main-nav a:hover, nav.main-nav a.active { color: #fff; background: var(--steel-2); }
.nav-cta {
  background: var(--amber); color: #fff !important; font-weight: 700 !important;
}
.nav-cta:hover { background: var(--amber-dark) !important; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--steel-2); color: #fff; font-size: 1.3rem; border-radius: 6px; padding: 2px 10px; cursor: pointer; }
.nav-search { color: var(--steel-text); font-size: 1rem; padding: 8px 10px; text-decoration: none; }
.nav-search:hover { color:#fff; text-decoration: none; }
@media (max-width: 1020px) {
  nav.main-nav { display: none; position: absolute; top: 62px; left: 0; right: 0;
    background: var(--steel); flex-direction: column; padding: 10px 16px 16px; gap: 4px;
    border-bottom: 3px solid var(--amber); box-shadow: var(--shadow-lg); }
  nav.main-nav.open { display: flex; }
  nav.main-nav a { font-size: 1rem; padding: 10px 12px; }
  .nav-toggle { display: block; }
}

/* ---------- hero ---------- */
.hero {
  background:
    linear-gradient(115deg, rgba(23,27,33,.96) 0%, rgba(23,27,33,.88) 46%, rgba(30,38,48,.65) 100%),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(255,255,255,.05) 39px 40px),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(255,255,255,.05) 39px 40px),
    var(--steel-2);
  color: #fff; padding: 76px 0 64px;
}
.hero h1 { max-width: 760px; }
.hero .lead { font-size: 1.15rem; color: #c8cdd5; max-width: 640px; }
.hero .kicker { color: var(--amber); }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.hero-plan { background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); padding: 10px; box-shadow: var(--shadow-lg); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; font-weight: 700; font-size: .95rem; padding: 12px 22px;
  border-radius: 8px; border: none; cursor: pointer; text-decoration: none !important;
  transition: background .15s, transform .05s; font-family: var(--font);
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--amber); color: #fff !important; }
.btn-primary:hover { background: var(--amber-dark); }
.btn-secondary { background: var(--blue); color: #fff !important; }
.btn-secondary:hover { background: var(--blue-dark); }
.btn-ghost { background: transparent; color: var(--ink) !important; border: 1.5px solid var(--line-strong); }
.btn-ghost:hover { border-color: var(--ink-soft); background: #fff; }
.hero .btn-ghost { color: #fff !important; border-color: rgba(255,255,255,.35); }
.hero .btn-ghost:hover { background: rgba(255,255,255,.08); border-color: #fff; }
.btn-sm { padding: 7px 14px; font-size: .84rem; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }

/* ---------- sections ---------- */
.section { padding: 64px 0; }
.section-tight { padding: 40px 0; }
.section-alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-dark { background: var(--steel); color: #fff; }
.section-dark h2 { color: #fff; }
.section-dark p { color: #c8cdd5; }
.section-head { max-width: 720px; margin-bottom: 34px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- cards / grids ---------- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow);
}
.card h3 a { color: var(--ink); }
.card-hover { transition: transform .12s, box-shadow .12s; }
.card-hover:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.card .thumb { margin: -22px -22px 16px; border-radius: var(--radius) var(--radius) 0 0; overflow: hidden; border-bottom: 1px solid var(--line); background: #eef0ee; }
.card .thumb svg { display: block; }
.stat-strip { display: flex; flex-wrap: wrap; gap: 8px 22px; font-size: .85rem; color: var(--muted); margin-top: 10px; }
.stat-strip b { color: var(--ink); }

/* ---------- tables ---------- */
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: #f0eee9; font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-soft); position: sticky; top: 0; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #faf9f6; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-plain th, .table-plain td { padding: 7px 10px; }

/* ---------- forms ---------- */
label.field { display: block; font-size: .8rem; font-weight: 700; color: var(--ink-soft); margin-bottom: 14px; }
label.field span.lab { display: block; margin-bottom: 4px; }
input[type=text], input[type=number], select, textarea {
  width: 100%; padding: 9px 11px; font-size: .95rem; font-family: var(--font);
  border: 1.5px solid var(--line-strong); border-radius: var(--radius-sm); background: #fff; color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--blue); outline-offset: 1px; border-color: var(--blue); }
.field-row { display: grid; gap: 12px; }
.f2 { grid-template-columns: 1fr 1fr; } .f3 { grid-template-columns: repeat(3, 1fr); } .f4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 640px) { .f3, .f4 { grid-template-columns: 1fr 1fr; } }
.unit-suffix { font-weight: 400; color: var(--muted); font-size: .75rem; }

/* ---------- tool layout ---------- */
.tool-layout { display: grid; grid-template-columns: 360px 1fr; gap: 26px; align-items: start; }
@media (max-width: 980px) { .tool-layout { grid-template-columns: 1fr; } }
.tool-panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.tool-panel h3 { font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-soft); border-bottom: 2px solid var(--amber); display: inline-block; padding-bottom: 4px; margin-bottom: 16px; }
.results-band { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; }
.metric { background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--amber); border-radius: var(--radius-sm); padding: 12px 14px; }
.metric .lab { font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 700; }
.metric .val { font-size: 1.35rem; font-weight: 800; font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.metric.blue { border-left-color: var(--blue); }
.metric.green { border-left-color: var(--green); }

/* ---------- rating dots ---------- */
.dots { display: inline-flex; gap: 3px; vertical-align: middle; }
.dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); }
.dots i.on { background: var(--amber); }

/* ---------- pills / filters ---------- */
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill {
  border: 1.5px solid var(--line-strong); background: #fff; color: var(--ink-soft);
  font-size: .82rem; font-weight: 600; padding: 6px 13px; border-radius: 99px; cursor: pointer; font-family: var(--font);
}
.pill:hover { border-color: var(--blue); color: var(--blue); }
.pill.on { background: var(--steel); border-color: var(--steel); color: #fff; }

/* ---------- accordion ---------- */
details.acc { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 12px; box-shadow: var(--shadow); }
details.acc summary { cursor: pointer; padding: 16px 20px; font-weight: 700; font-size: 1.02rem; list-style: none; display: flex; align-items: center; gap: 10px; }
details.acc summary::-webkit-details-marker { display: none; }
details.acc summary::after { content: "+"; margin-left: auto; font-size: 1.3rem; color: var(--amber); font-weight: 400; }
details.acc[open] summary::after { content: "–"; }
details.acc .acc-body { padding: 0 20px 18px; }

/* ---------- callouts ---------- */
.callout { border-left: 4px solid var(--amber); background: var(--amber-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 14px 18px; margin: 18px 0; font-size: .92rem; }
.callout.blue { border-left-color: var(--blue); background: var(--blue-soft); }
.disclaimer-box { font-size: .8rem; color: var(--muted); border: 1px dashed var(--line-strong); border-radius: var(--radius-sm); padding: 10px 14px; margin-top: 20px; background: #fbfaf8; }

/* ---------- page hero (interior) ---------- */
.page-hero { background: var(--steel); color: #fff; padding: 44px 0 38px; border-bottom: 3px solid var(--amber); }
.page-hero h1 { margin-bottom: .25em; }
.page-hero p { color: #c8cdd5; max-width: 700px; margin-bottom: 0; }
.crumbs { font-size: .78rem; color: #8d93a0; margin-bottom: 14px; }
.crumbs a { color: #b9bfca; }

/* ---------- footer ---------- */
.site-footer { background: var(--steel); color: #9aa1ac; margin-top: 80px; padding: 48px 0 28px; font-size: .88rem; }
.site-footer a { color: #c9cdd4; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 30px; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 { color: #fff; font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 7px; }
.footer-bottom { border-top: 1px solid var(--steel-2); padding-top: 18px; font-size: .78rem; display: flex; flex-wrap: wrap; gap: 10px 24px; justify-content: space-between; }

/* ---------- workflow steps ---------- */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 980px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.step { counter-increment: step; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; position: relative; }
.step::before {
  content: counter(step, decimal-leading-zero); font-family: var(--mono); font-weight: 700;
  color: var(--amber); font-size: .95rem; display: block; margin-bottom: 8px;
}
.step b { display: block; margin-bottom: 4px; }
.step .small { color: var(--muted); }

/* ---------- compare picker ---------- */
.compare-bar { position: sticky; bottom: 0; background: var(--steel); color: #fff; padding: 12px 0; z-index: 40; box-shadow: 0 -8px 24px rgba(0,0,0,.25); display: none; }
.compare-bar.show { display: block; }
.compare-bar .wrap { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

/* ---------- planner canvas ---------- */
.plan-canvas { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; box-shadow: var(--shadow); }
.plan-canvas svg { display: block; width: 100%; height: auto; }
.legend { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: .78rem; color: var(--ink-soft); margin-top: 10px; }
.legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; border: 1px solid rgba(0,0,0,.15); }

/* ---------- misc ---------- */
.hr { border: none; border-top: 1px solid var(--line); margin: 34px 0; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.center { text-align: center; }
.mt0 { margin-top: 0; } .mb0 { margin-bottom: 0; }
.hidden { display: none !important; }
.two-col { columns: 2; column-gap: 40px; }
@media (max-width: 720px) { .two-col { columns: 1; } }
ul.checks { list-style: none; padding: 0; }
ul.checks li { padding-left: 26px; position: relative; margin-bottom: 8px; }
ul.checks li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 800; }
ul.crosses li::before { content: "✕"; color: var(--danger); }
.prose h2 { margin-top: 1.6em; } .prose h3 { margin-top: 1.4em; }
.prose table { margin: 1em 0; }
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--amber); color: #fff; padding: 8px 16px; z-index: 100; }
.skip-link:focus { left: 8px; top: 8px; }
@media print { .site-header, .site-footer, .compare-bar, .btn { display: none !important; } body { background: #fff; } }