/* OnGraph DC Configurator — brand tokens from ongraph.com */
:root {
  --navy-900: #032a40;
  --navy-800: #054061;
  --navy-700: #005989;
  --blue-600: #046091;
  --blue-500: #026da6;
  --sky-400: #58c5ff;
  --sky-100: #e6f6ff;
  --ink: #16212b;
  --ink-2: #4a5866;
  --ink-3: #7b8794;
  --line: #dde3e9;
  --line-2: #eef2f5;
  --bg: #f6f8fa;
  --card: #ffffff;
  --ok: #1d7a4c;
  --ok-bg: #e8f6ee;
  --warn: #9a5b00;
  --warn-bg: #fff4e0;
  --err: #c0392b;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(5, 64, 97, .06), 0 6px 20px rgba(5, 64, 97, .06);
  --font: 'Poppins', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg); font-size: 15px; line-height: 1.55; }
img { max-width: 100%; }
[hidden] { display: none !important; }
h1, h2, h3 { line-height: 1.2; margin: 0; }
a { color: var(--blue-600); }
:focus-visible { outline: 3px solid var(--sky-400); outline-offset: 2px; }

/* Header */
.topbar { background: var(--navy-800); color: #fff; display: flex; align-items: center; gap: 16px; padding: 12px clamp(16px, 4vw, 40px); }
.brand img { display: block; height: 36px; width: auto; }
.topbar-tag { font-size: 13px; letter-spacing: .04em; opacity: .8; border-left: 1px solid rgba(255,255,255,.25); padding-left: 16px; }
.topbar-link { margin-left: auto; color: #fff; text-decoration: none; font-size: 13px; border: 1px solid rgba(255,255,255,.4); padding: 7px 14px; border-radius: 999px; white-space: nowrap; }
.topbar-link:hover { background: rgba(255,255,255,.1); }
.banner { background: var(--sky-100); color: var(--navy-800); font-size: 12.5px; padding: 8px clamp(16px, 4vw, 40px); border-bottom: 1px solid #cdeaff; }

main { max-width: 1200px; margin: 0 auto; padding: 32px clamp(16px, 4vw, 40px) 64px; }

/* Buttons */
.btn { font: inherit; font-weight: 500; border-radius: 8px; border: 1px solid transparent; padding: 10px 20px; cursor: pointer; transition: background .15s, border-color .15s, color .15s; }
.btn-primary { background: var(--blue-600); color: #fff; }
.btn-primary:hover { background: var(--navy-700); }
.btn-primary:disabled { background: var(--ink-3); cursor: progress; }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--blue-600); color: var(--blue-600); }
.btn-lg { padding: 14px 28px; font-size: 16px; }

/* Welcome */
.welcome { text-align: center; max-width: 820px; margin: 24px auto; }
.eyebrow { color: var(--blue-600); font-weight: 600; letter-spacing: .08em; text-transform: uppercase; font-size: 12px; }
.welcome h1 { font-size: clamp(32px, 5vw, 52px); font-weight: 700; color: var(--navy-800); margin: 8px 0 16px; }
.lede { color: var(--ink-2); font-size: 17px; max-width: 640px; margin: 0 auto 28px; }
.stats { list-style: none; padding: 0; margin: 0 0 32px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.stats li { background: var(--card); padding: 18px 8px; display: flex; flex-direction: column; }
.stats b { font-size: 26px; color: var(--blue-600); }
.stats span { font-size: 12px; color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; }

/* Progress */
.progress { list-style: none; padding: 0; margin: 0 0 28px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; counter-reset: s; }
.progress button { width: 100%; font: inherit; background: none; border: 0; border-top: 3px solid var(--line); padding: 8px 0 0; text-align: left; font-size: 12px; color: var(--ink-3); cursor: pointer; letter-spacing: .03em; }
.progress button:disabled { cursor: default; }
.progress .done button { border-color: var(--sky-400); color: var(--ink-2); }
.progress .current button { border-color: var(--blue-600); color: var(--blue-600); font-weight: 600; }

.cols { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 32px; align-items: start; }
.step-head { margin-bottom: 20px; }
.kicker { font-family: var(--mono); font-size: 12px; color: var(--blue-600); margin: 0 0 6px; letter-spacing: .05em; text-transform: uppercase; }
.step-head h1 { font-size: clamp(26px, 3.4vw, 34px); color: var(--navy-800); outline: none; }
.blurb { color: var(--ink-2); margin: 8px 0 0; max-width: 640px; }

.panel { display: none; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.panel.active { display: block; }
.panel > * + * { margin-top: 18px; }
fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }

/* Fields */
.lbl { display: block; font-size: 12.5px; font-weight: 600; color: var(--ink-2); margin-bottom: 6px; letter-spacing: .02em; }
.req { color: var(--err); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 20px; }
.field { min-width: 0; }
input[type=text], input[type=email], input[type=tel], input[type=url], input[type=number], select, textarea {
  width: 100%; font: inherit; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; min-height: 44px;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--blue-600); box-shadow: 0 0 0 3px rgba(88,197,255,.35); }
[aria-invalid=true] { border-color: var(--err) !important; }
input[type=file] { font: inherit; font-size: 13px; width: 100%; padding: 8px; border: 1px dashed var(--line); border-radius: 8px; background: var(--bg); }
.readout { display: block; min-height: 44px; padding: 10px 12px; background: var(--bg); border: 1px solid var(--line-2); border-radius: 8px; font-family: var(--mono); font-size: 14px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
#city { margin-top: 8px; }
.hint { font-size: 12px; color: var(--ink-3); margin: 6px 0 0; }
.err { font-size: 12.5px; color: var(--err); margin: 6px 0 0; min-height: 0; }
.err:empty { display: none; }
.check { display: flex; gap: 10px; align-items: center; font-size: 14px; cursor: pointer; }
.check input { width: 18px; height: 18px; accent-color: var(--blue-600); }
.own { border-top: 1px solid var(--line-2); padding-top: 16px; }
#ownWrap { margin-top: 12px; display: grid; gap: 6px; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.cards-4 { grid-template-columns: repeat(2, 1fr); }
.card { font: inherit; text-align: left; background: #fff; border: 1.5px solid var(--line); border-radius: var(--radius); padding: 14px 16px; cursor: pointer; display: flex; flex-direction: column; gap: 6px; transition: border-color .15s, box-shadow .15s; color: var(--ink); }
.card:hover:not(:disabled) { border-color: var(--sky-400); }
.card[aria-pressed=true] { border-color: var(--blue-600); box-shadow: 0 0 0 3px rgba(4,96,145,.12); background: #f7fbfe; }
.card:disabled { opacity: .45; cursor: not-allowed; }
.card-title { font-weight: 600; display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.card-desc { font-size: 13px; color: var(--ink-2); }
.card-meta { font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); margin-top: auto; }
.pill { font-family: var(--mono); font-size: 11px; background: var(--sky-100); color: var(--navy-800); padding: 2px 8px; border-radius: 999px; white-space: nowrap; flex-shrink: 0; font-weight: 500; }
.pill-ok { background: var(--ok-bg); color: var(--ok); }

/* Segmented */
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg-btn { font: inherit; font-size: 14px; border: 0; background: #fff; padding: 9px 18px; cursor: pointer; color: var(--ink-2); }
.seg-btn[aria-pressed=true] { background: var(--blue-600); color: #fff; }

/* Metrics */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.metric { background: #fff; padding: 14px; }
.metric b { display: block; font-size: 20px; color: var(--navy-800); font-weight: 600; }
.metric span { font-size: 11.5px; color: var(--ink-3); text-transform: uppercase; letter-spacing: .05em; }
.callout { border-radius: 8px; padding: 12px 14px; font-size: 14px; background: var(--sky-100); color: var(--navy-800); border-left: 3px solid var(--blue-600); }
.callout:empty { display: none; }
.callout.warn { background: var(--warn-bg); color: var(--warn); border-color: var(--warn); }
.callout.ok { background: var(--ok-bg); color: var(--ok); border-color: var(--ok); }

.impact { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.impact:empty { display: none; }
.impact div { background: var(--bg); border-radius: 8px; padding: 10px 12px; }
.impact b { display: block; font-family: var(--mono); font-size: 15px; color: var(--navy-800); }
.impact span { font-size: 11.5px; color: var(--ink-3); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { font-family: var(--mono); font-size: 12px; border: 1px solid var(--line); border-radius: 6px; padding: 4px 10px; background: var(--bg); }
.notes { margin: 0; padding-left: 18px; color: var(--warn); font-size: 13.5px; }
.notes:empty { display: none; }

/* Layout */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); }
.tab { font: inherit; font-size: 14px; background: none; border: 0; border-bottom: 2px solid transparent; padding: 10px 14px; cursor: pointer; color: var(--ink-2); margin-bottom: -1px; }
.tab[aria-selected=true] { color: var(--blue-600); border-color: var(--blue-600); font-weight: 600; }
.drawing { background: #fbfcfd; border: 1px solid var(--line-2); border-radius: 8px; padding: 12px; overflow: auto; }
.drawing svg { display: block; width: 100%; height: auto; max-height: 560px; }
.drawing-3d { position: relative; padding: 0; background: #f4f7f9; }
.viewer { height: clamp(320px, 52vw, 520px); }
.viewer svg { max-height: none; height: 100%; }
.viewer-ui { position: absolute; left: 10px; right: 10px; bottom: 10px; display: flex; justify-content: space-between; align-items: center; gap: 8px; pointer-events: none; }
.viewer-ui > * { pointer-events: auto; }
.viewer-hint { font-size: 11.5px; color: var(--ink-2); background: rgba(255,255,255,.85); padding: 4px 10px; border-radius: 999px; }
.btn-sm { padding: 6px 12px; font-size: 13px; background: #fff; }
.caption { font-size: 12.5px; color: var(--ink-3); font-family: var(--mono); }
.reco { background: linear-gradient(135deg, var(--navy-800), var(--blue-600)); color: #fff; border-radius: var(--radius); padding: 18px 20px; }
.reco h3 { font-size: 18px; margin: 4px 0 6px; }
.reco p { margin: 0; opacity: .9; font-size: 14px; }
.reco .eyebrow { color: var(--sky-400); }
.reco ul { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; padding: 0; margin: 12px 0 0; }
.reco li { font-size: 12px; background: rgba(255,255,255,.12); padding: 3px 10px; border-radius: 999px; }
.oem { border: 1px solid var(--line); border-radius: 8px; padding: 0 14px; }
.oem summary { cursor: pointer; padding: 12px 0; font-weight: 600; font-size: 14px; }
.oem-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; padding-bottom: 14px; }
.oem-grid h4 { margin: 0 0 4px; font-size: 12px; color: var(--ink-3); text-transform: uppercase; letter-spacing: .05em; }
.oem-grid p { margin: 0; font-size: 13.5px; }

/* Review */
.summary { width: 100%; border-collapse: collapse; font-size: 14px; }
.summary th, .summary td { text-align: left; padding: 8px 0; border-bottom: 1px solid var(--line-2); vertical-align: top; }
.summary th { color: var(--ink-3); font-weight: 500; width: 40%; }
#leadForm { border-top: 1px solid var(--line); padding-top: 20px; display: grid; gap: 16px; }
.choice { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.choice-opt { display: flex; gap: 10px; align-items: flex-start; border: 1.5px solid var(--line); border-radius: 8px; padding: 12px 14px; cursor: pointer; }
.choice-opt:has(input:checked) { border-color: var(--blue-600); background: #f7fbfe; }
.choice-opt input { margin-top: 4px; accent-color: var(--blue-600); }
.choice-opt small { display: block; color: var(--ink-3); font-size: 12.5px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.consent { font-size: 13px; color: var(--ink-2); }

.step-nav { display: flex; justify-content: space-between; margin-top: 20px; }

/* Sidebar */
.sidebar { position: sticky; top: 16px; }
.sb-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.sb-title { background: var(--navy-800); color: #fff; font-size: 13px; font-weight: 600; padding: 12px 16px; letter-spacing: .04em; }
.sb-rows { margin: 0; padding: 6px 16px; }
.sb-rows div { display: flex; justify-content: space-between; gap: 12px; padding: 7px 0; border-bottom: 1px solid var(--line-2); font-size: 13px; }
.sb-rows div:last-child { border: 0; }
.sb-rows dt { color: var(--ink-3); }
.sb-rows dd { margin: 0; text-align: right; font-family: var(--mono); font-size: 12.5px; color: var(--navy-800); }
.sb-carbon { margin: 0 16px 16px; padding: 12px; border-radius: 8px; background: var(--ok-bg); color: var(--ok); font-size: 12.5px; }
.sb-carbon:empty { display: none; }
.sb-carbon b { display: block; font-size: 22px; }

/* Success */
.success { text-align: center; max-width: 720px; margin: 24px auto; }
.tick { width: 64px; height: 64px; border-radius: 50%; background: var(--ok); color: #fff; font-size: 32px; display: grid; place-items: center; margin: 0 auto 16px; }
.success h1 { color: var(--navy-800); font-size: clamp(26px, 4vw, 36px); outline: none; margin-bottom: 12px; }
.success-meta { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin: 0 0 24px; }
.success-meta div { background: #fff; padding: 14px 8px; }
.success-meta dt { font-size: 11px; color: var(--ink-3); text-transform: uppercase; letter-spacing: .05em; }
.success-meta dd { margin: 4px 0 0; font-family: var(--mono); font-size: 14px; color: var(--navy-800); word-break: break-word; }
.success-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.foot { text-align: center; font-size: 12px; color: var(--ink-3); padding: 24px 16px 40px; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 8px; font-size: 14px; opacity: 0; pointer-events: none; transition: opacity .2s; max-width: calc(100vw - 32px); }
.toast.show { opacity: 1; }

/* Responsive */
@media (max-width: 1100px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 960px) {
  .cols { grid-template-columns: 1fr; }
  .sidebar { position: static; order: -1; }
  .cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  main { padding-top: 20px; }
  .topbar-tag { display: none; }
  .grid2, .choice, .cards, .cards-4 { grid-template-columns: 1fr; }
  .metrics, .impact, .stats, .success-meta { grid-template-columns: repeat(2, 1fr); }
  .progress { grid-template-columns: repeat(6, 1fr); }
  .progress button { font-size: 0; }
  .panel { padding: 18px; }
  .step-nav .btn { flex: 1; }
  .step-nav { gap: 12px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }