:root {
  color-scheme: dark;
  --bg: #061321;
  --surface: #0a1c2e;
  --surface-2: #0d2438;
  --line: #203c50;
  --text: #f3f7fa;
  --muted: #9eb3c3;
  --accent: #46d6b2;
  --accent-soft: rgba(70, 214, 178, .12);
  --blue: #5eb7ff;
  --danger: #ff857a;
  --warning: #ffca67;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: radial-gradient(circle at 70% -10%, #123756 0, transparent 35rem), var(--bg); color: var(--text); min-height: 100vh; }
a { color: inherit; }
button, input, select { font: inherit; }

.topbar { min-height: 72px; padding: 0 5vw; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); background: rgba(6, 19, 33, .86); backdrop-filter: blur(16px); position: sticky; top: 0; z-index: 10; }
.brand { display: flex; align-items: center; gap: .8rem; font-weight: 720; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 2.4rem; height: 2.4rem; border: 1px solid var(--accent); color: var(--accent); border-radius: .55rem; font-size: .72rem; letter-spacing: .08em; }
.author { color: var(--muted); text-decoration: none; font-size: .9rem; }
.author:hover { color: var(--accent); }
.top-links { display: flex; align-items: center; gap: 1rem; }
.top-links a { color: var(--muted); text-decoration: none; font-size: .9rem; }
.top-links a:hover { color: var(--accent); }

main { width: min(1180px, 90vw); margin: 0 auto; }
.intro { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr); gap: 3rem; align-items: end; padding: 2.7rem 0 2rem; }
.eyebrow { color: var(--accent); font-size: .8rem; text-transform: uppercase; letter-spacing: .16em; font-weight: 750; }
h1 { margin: .5rem 0 .8rem; max-width: 780px; font-size: clamp(2.2rem, 4.2vw, 3.8rem); line-height: 1; letter-spacing: -.045em; }
.intro > div > p:last-child { color: var(--muted); max-width: 700px; line-height: 1.65; font-size: 1.05rem; }
.notice { padding: 1.15rem 1.25rem; border-left: 3px solid var(--warning); background: rgba(255, 202, 103, .06); display: grid; gap: .35rem; line-height: 1.45; }
.notice strong { color: var(--warning); }
.notice span { color: var(--muted); font-size: .9rem; }

.tool-tabs { display: flex; gap: .4rem; padding: .4rem; border: 1px solid var(--line); background: var(--surface); border-radius: .8rem; overflow-x: auto; }
.tab { border: 0; border-radius: .55rem; padding: .85rem 1rem; color: var(--muted); background: transparent; cursor: pointer; white-space: nowrap; font-weight: 650; font-size: .9rem; }
.tab:hover { color: var(--text); background: var(--surface-2); }
.tab.active { background: var(--accent); color: #052119; }

.tool-panel { padding: 1.3rem 0 4rem; }
.workspace { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(300px, .75fr); gap: 1.3rem; align-items: stretch; }
.input-card, .result-card { border: 1px solid var(--line); border-radius: 1rem; background: rgba(10, 28, 46, .92); padding: clamp(1.2rem, 3vw, 2rem); }
.card-heading { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 1.7rem; }
.card-heading > div { display: flex; align-items: center; gap: .8rem; }
.step { font-size: .75rem; color: var(--accent); border: 1px solid rgba(70, 214, 178, .35); padding: .25rem .4rem; border-radius: .3rem; }
h2 { margin: 0; font-size: 1.35rem; }
.card-heading p { margin: 0; color: var(--muted); font-size: .9rem; max-width: 330px; text-align: right; line-height: 1.45; }
.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.field-grid.compact { margin-top: 1rem; grid-template-columns: repeat(3, minmax(0, 1fr)); }
label { color: var(--muted); font-size: .85rem; font-weight: 650; }
label > span { color: #648096; float: right; font-weight: 500; }
input { width: 100%; margin-top: .45rem; padding: .8rem .85rem; border-radius: .5rem; border: 1px solid #29475c; background: #071726; color: var(--text); outline: none; min-height: 44px; }
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
select { width: 100%; margin-top: .45rem; padding: .8rem .85rem; border-radius: .5rem; border: 1px solid #29475c; background: #071726; color: var(--text); min-height: 44px; }

.wide-card { border: 1px solid var(--line); border-radius: 1rem; background: rgba(10, 28, 46, .92); padding: clamp(1.2rem, 3vw, 2rem); }
.capacity-heading { align-items: center; }
.capacity-summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: .8rem; margin-bottom: 1rem; overflow: hidden; }
.capacity-summary > div { padding: 1rem; border-right: 1px solid var(--line); display: grid; gap: .3rem; }
.capacity-summary > div:last-child { border: 0; }
.capacity-summary span { color: var(--muted); font-size: .78rem; }
.capacity-summary strong { font-size: 1.55rem; }
.capacity-racks { display: grid; gap: 1rem; }
.capacity-rack-card { border: 1px solid var(--line); border-radius: .8rem; background: #071726; padding: 1rem; }
.rack-card-top { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 1rem; }
.rack-card-top input { font-weight: 750; color: var(--text); }
.rack-demand-grid { display: grid; grid-template-columns: 1.2fr 1.2fr 1fr 1fr .8fr; gap: .7rem; margin-top: 1rem; }
.rack-demand-grid label:last-child { position: relative; }
.rack-demand-grid label:last-child span { position: absolute; right: .8rem; bottom: .85rem; color: var(--muted); }
.recommendation-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; margin: .8rem 0; }
.recommendation { border: 1px solid var(--line); border-radius: .65rem; padding: .8rem; display: grid; grid-template-columns: 1fr auto; gap: .25rem .8rem; align-items: center; }
.recommendation span, .recommendation small { color: var(--muted); font-size: .75rem; }
.recommendation strong { font-size: .95rem; }
.recommendation small { grid-column: 1; }
.recommendation button { grid-column: 2; grid-row: 1 / span 3; border: 1px solid var(--accent); background: transparent; color: var(--accent); border-radius: .45rem; padding: .5rem .65rem; cursor: pointer; }
.recommendation button:hover { background: var(--accent-soft); }
.switch-mix { display: grid; grid-template-columns: 1fr repeat(3, 110px); gap: .7rem; align-items: end; padding: .8rem; background: var(--surface-2); border-radius: .65rem; }
.switch-mix > div { display: grid; gap: .2rem; align-self: center; }
.switch-mix > div span { font-weight: 720; }
.switch-mix > div small { color: var(--muted); }
.switch-mix input { margin-top: .3rem; }
.rack-result { display: flex; justify-content: flex-end; align-items: center; flex-wrap: wrap; gap: .35rem; padding-top: .75rem; color: var(--muted); font-size: .85rem; }
.rack-result strong { color: var(--text); }
.rack-result i { font-style: normal; color: #496579; padding: 0 .2rem; }
.good-text { color: var(--accent) !important; }
.bad-text { color: var(--danger) !important; }
.secondary-button, .primary-button { min-height: 42px; border-radius: .55rem; padding: .7rem .9rem; font-weight: 720; cursor: pointer; }
.secondary-button { border: 1px solid var(--line); background: var(--surface-2); color: var(--text); }
.secondary-button:hover { border-color: var(--accent); }
.primary-button { border: 1px solid var(--accent); background: var(--accent); color: #052119; }
.wide-card > .secondary-button { margin-top: 1rem; }
.icon-button { width: 42px; height: 42px; border: 1px solid var(--line); background: transparent; color: var(--muted); border-radius: .5rem; cursor: pointer; font-size: 1.25rem; }
.icon-button:hover { color: var(--danger); border-color: var(--danger); }

.rack-editor-heading { display: flex; align-items: center; justify-content: space-between; gap: 2rem; border: 1px solid var(--line); border-bottom: 0; border-radius: 1rem 1rem 0 0; padding: 1.2rem 1.4rem; background: var(--surface); }
.rack-editor-heading > div:first-child { display: grid; grid-template-columns: auto auto; align-items: center; gap: .5rem .8rem; }
.rack-editor-heading p { grid-column: 2; color: var(--muted); margin: 0; font-size: .85rem; }
.rack-actions { display: flex; gap: .6rem; }
.rack-editor-layout { display: grid; grid-template-columns: minmax(250px, .65fr) minmax(400px, 1.35fr); min-height: 640px; border: 1px solid var(--line); border-radius: 0 0 1rem 1rem; overflow: hidden; }
.equipment-palette { padding: 1.2rem; background: #071726; border-right: 1px solid var(--line); }
.equipment-palette h3 { margin: 0 0 .3rem; }
.equipment-palette > p { color: var(--muted); font-size: .82rem; line-height: 1.5; margin: 0 0 1rem; }
.equipment-buttons { display: grid; gap: .45rem; }
.equipment-buttons button { display: grid; grid-template-columns: 10px 1fr auto; align-items: center; gap: .7rem; min-height: 42px; border: 1px solid var(--line); border-radius: .5rem; background: var(--surface); color: var(--text); padding: .5rem .65rem; cursor: pointer; text-align: left; }
.equipment-buttons button:hover { border-color: var(--accent); transform: translateX(2px); }
.equipment-buttons button > span { width: 8px; height: 22px; border-radius: 2px; background: var(--piece-color); }
.equipment-buttons button small { color: var(--muted); }
.rack-settings { border-top: 1px solid var(--line); display: grid; gap: .8rem; margin-top: 1rem; padding-top: 1rem; }
.rack-canvas-card { padding: 1.3rem; background: linear-gradient(145deg, #0d2438, #081928); }
.rack-canvas-header { display: flex; justify-content: space-between; align-items: end; gap: 1rem; margin-bottom: 1rem; }
.rack-canvas-header > div:first-child { display: grid; gap: .2rem; }
.rack-canvas-header span { color: var(--muted); font-size: .78rem; }
.rack-canvas-header strong { font-size: 1.15rem; }
.rack-usage { display: grid; grid-template-columns: auto auto; gap: .05rem .4rem; text-align: right; }
.rack-usage strong { color: var(--accent); }
.rack-frame { position: relative; min-height: 500px; padding: .65rem; display: flex; flex-direction: column; gap: 4px; border: 10px solid #1d3548; border-radius: .55rem; background: repeating-linear-gradient(to bottom, #061321 0, #061321 35px, #183247 36px); box-shadow: inset 0 0 0 1px #38566c, 0 18px 45px rgba(0, 0, 0, .26); }
.rack-frame::before, .rack-frame::after { content: ""; position: absolute; top: 0; bottom: 0; width: 5px; background: repeating-linear-gradient(to bottom, #597186 0 3px, transparent 3px 14px); opacity: .7; }
.rack-frame::before { left: -8px; }
.rack-frame::after { right: -8px; }
.rack-piece { min-height: calc(var(--piece-units) * 36px - 4px); flex: 0 0 calc(var(--piece-units) * 36px - 4px); overflow: hidden; background: color-mix(in srgb, var(--piece-color) 72%, #061321); border: 1px solid var(--piece-color); border-left: 6px solid var(--piece-color); border-radius: .35rem; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: .45rem; padding: .18rem .45rem; color: var(--text); cursor: grab; position: relative; z-index: 1; line-height: 1; }
.rack-piece.dragging { opacity: .45; }
.rack-piece > div:nth-child(2) { min-width: 0; display: flex; align-items: baseline; gap: .4rem; white-space: nowrap; overflow: hidden; }
.rack-piece strong { overflow: hidden; text-overflow: ellipsis; font-size: .85rem; }
.rack-piece small { flex: 0 0 auto; color: rgba(243,247,250,.7); font-size: .68rem; }
.rack-grip { color: rgba(243,247,250,.55); }
.piece-actions { display: flex; gap: .25rem; }
.piece-actions button { width: 24px; height: 24px; padding: 0; border: 1px solid rgba(243,247,250,.22); border-radius: .3rem; background: rgba(6,19,33,.45); color: var(--text); cursor: pointer; line-height: 1; }
.piece-actions button:hover { border-color: var(--text); }
.rack-empty { color: var(--muted); text-align: center; font-size: .85rem; margin: .9rem 0 0; }

.result-card { background: linear-gradient(150deg, #0d2a3e 0, #091b2b 70%); display: flex; flex-direction: column; }
.result-label { color: var(--muted); font-size: .82rem; text-transform: uppercase; letter-spacing: .1em; margin: 0; }
.result-value { display: flex; align-items: baseline; gap: .55rem; margin: .6rem 0 1rem; }
.result-value strong { font-size: clamp(3.2rem, 7vw, 5.4rem); line-height: 1; letter-spacing: -.06em; }
.result-value span { color: var(--muted); }
.status { width: fit-content; padding: .42rem .65rem; border-radius: 999px; font-size: .78rem; font-weight: 750; margin-bottom: 1.5rem; }
.status.good { color: var(--accent); background: var(--accent-soft); }
.status.bad { color: var(--danger); background: rgba(255, 133, 122, .12); }
.status.neutral { color: var(--blue); background: rgba(94, 183, 255, .12); }
.breakdown { margin: 0; border-top: 1px solid var(--line); }
.breakdown div { display: flex; justify-content: space-between; gap: 1rem; border-bottom: 1px solid var(--line); padding: .75rem 0; }
.breakdown dt { color: var(--muted); }
.breakdown dd { margin: 0; font-weight: 700; text-align: right; }
details { margin-top: auto; padding-top: 1.4rem; color: var(--muted); font-size: .85rem; line-height: 1.5; }
summary { color: var(--accent); cursor: pointer; font-weight: 700; }
.technical-note { border: 1px solid var(--line); border-top: 0; margin: 0 1rem; padding: 1rem 1.2rem; color: var(--muted); line-height: 1.55; font-size: .85rem; background: rgba(7, 23, 38, .8); border-radius: 0 0 .75rem .75rem; }
.technical-note strong { color: var(--text); }

.advisor-layout { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(260px, .45fr); gap: 1rem; }
.advisor-intro { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr); gap: 2rem; align-items: end; padding: 2rem 0 1.2rem; }
.advisor-intro h1 { font-size: clamp(2rem, 3.6vw, 3.25rem); }
.advisor-intro > div > p:last-child { color: var(--muted); max-width: 720px; line-height: 1.6; margin-bottom: 0; }
.advisor-workspace { padding-bottom: 4rem; }
.advisor-summary { border: 1px solid var(--line); border-radius: 1rem; background: linear-gradient(150deg, #0d2a3e, #091b2b); padding: 1.4rem; display: flex; flex-direction: column; gap: .75rem; }
.advisor-summary > span, .catalog-health span { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; }
.advisor-summary > strong { font-size: 1.55rem; line-height: 1.25; }
.advisor-summary p { color: var(--muted); line-height: 1.55; margin: 0; }
.advisor-summary .status { margin-top: auto; margin-bottom: 0; border-radius: .6rem; line-height: 1.35; }
.multi-selector { margin: 1rem 0 0; padding: 1rem; border: 1px solid var(--line); border-radius: .7rem; display: flex; flex-wrap: wrap; gap: .7rem 1.2rem; }
.multi-selector legend { color: var(--muted); font-size: .82rem; font-weight: 700; padding: 0 .35rem; }
.multi-selector label { display: flex; align-items: center; gap: .5rem; color: var(--text); }
.multi-selector input { width: 1rem; min-height: 1rem; margin: 0; accent-color: var(--accent); }
.zone-selector { background: rgba(94,183,255,.04); }
.building-section { margin-top: 1rem; padding: 1rem; border: 1px solid var(--line); border-radius: .7rem; background: var(--surface-2); }
.building-section > div:first-child { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: .8rem; }
.building-section h3 { margin: 0; font-size: .95rem; }
.building-section span { color: var(--accent); font-size: .78rem; }
.building-rooms { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .7rem; }
.building-row { min-width: 0; display: grid; grid-template-columns: minmax(100px, .8fr) minmax(120px, 1.2fr); align-items: end; gap: .65rem; padding: .75rem; border: 1px solid var(--line); border-radius: .6rem; background: #071726; }
.building-row > strong { align-self: center; font-size: .85rem; }
.building-row input { margin-top: .3rem; }
.scope-warning { margin-top: 1rem; border-left: 3px solid var(--warning); padding: .8rem 1rem; color: var(--muted); background: rgba(255,202,103,.06); font-size: .85rem; line-height: 1.5; }
.scope-warning strong { color: var(--warning); }
.advisor-results-heading { display: flex; justify-content: space-between; align-items: end; gap: 2rem; margin: 1.5rem 0 .8rem; }
.advisor-results-heading h3 { margin: 0 0 .25rem; }
.advisor-results-heading p { margin: 0; color: var(--muted); font-size: .85rem; }
.catalog-health { display: grid; text-align: right; }
.catalog-health strong { color: var(--accent); font-size: 1.6rem; }
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .8rem; }
.product-card { min-width: 0; border: 1px solid var(--line); border-radius: .8rem; background: rgba(10,28,46,.92); padding: 1rem; display: flex; flex-direction: column; }
.product-top { display: flex; justify-content: space-between; align-items: center; gap: .5rem; }
.brand-badge, .verified-badge { font-size: .7rem; border-radius: 999px; padding: .3rem .5rem; }
.brand-badge { color: #061321; background: var(--accent); font-weight: 800; }
.brand-aruba { background: #ff9e2c; }.brand-fortinet { background: #ff6b61; }.brand-huawei { background: #ef6b72; }.brand-ruckus { background: #75d9be; }
.verified-badge { color: var(--muted); border: 1px solid var(--line); white-space: nowrap; }
.product-card h3, .product-card h4 { margin: .9rem 0 .2rem; font-size: 1.18rem; }
.product-card > p { color: var(--muted); line-height: 1.5; font-size: .85rem; }
.product-card .product-family { margin: 0; color: var(--blue); font-size: .76rem; }
.product-card dl { margin: .5rem 0; border-top: 1px solid var(--line); }
.product-card dl div { padding: .65rem 0; border-bottom: 1px solid var(--line); }
.product-card dt { color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; }
.product-card dd { margin: .25rem 0 0; font-size: .8rem; line-height: 1.45; }
.product-sources { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: auto; padding-top: .6rem; }
.product-sources a { color: var(--accent); font-size: .76rem; text-decoration: none; border-bottom: 1px solid rgba(70,214,178,.35); }
.switch-catalog { margin: 1rem 0; padding: 1rem; border: 1px solid var(--line); border-radius: .8rem; background: rgba(7,23,38,.72); }
.switch-catalog summary { margin-bottom: 1rem; }
.empty-result { grid-column: 1 / -1; padding: 1.4rem; border: 1px dashed var(--line); border-radius: .8rem; color: var(--muted); }

.planning-card, .preliminary-report { margin-top: 1rem; border: 1px solid var(--line); border-radius: 1rem; background: rgba(10, 28, 46, .92); padding: clamp(1.2rem, 3vw, 2rem); }
.planning-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 1rem; }
.planning-fieldset { min-width: 0; margin: 0; padding: 1rem; border: 1px solid var(--line); border-radius: .75rem; background: #071726; }
.planning-fieldset legend { color: var(--accent); padding: 0 .4rem; font-size: .85rem; font-weight: 750; }
.ap-quantity-fieldset, .rack-distribution-fieldset { grid-column: 1 / -1; }
.ap-quantity-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .7rem; }
.field-help { margin: .8rem 0 0; color: var(--muted); font-size: .78rem; line-height: 1.5; }
.rack-intro { margin-top: 0; }
.rack-definition-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; margin-top: .8rem; }
.rack-definition-card { min-width: 0; padding: .9rem; border: 1px solid var(--line); border-radius: .65rem; background: var(--surface); }
.rack-definition-title { display: flex; align-items: baseline; justify-content: space-between; gap: .8rem; margin-bottom: .7rem; }
.rack-definition-title span { color: var(--accent); font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; }
.rack-definition-title strong { color: var(--muted); font-size: .72rem; text-align: right; }
.rack-identity-grid { display: grid; grid-template-columns: .8fr 1.2fr 1fr; gap: .55rem; }
.rack-node-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .55rem; margin-top: .7rem; padding-top: .7rem; border-top: 1px solid var(--line); }
.rack-hardware-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .55rem; margin-top: .7rem; padding-top: .7rem; border-top: 1px dashed var(--line); }
.rack-definition-card label { font-size: .72rem; }
.rack-definition-card input, .rack-definition-card select { min-width: 0; min-height: 38px; padding: .55rem .6rem; }
.report-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.report-heading > div:first-child { display: flex; align-items: center; gap: .8rem; }
.report-actions { display: flex; gap: .6rem; }
.report-metrics { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: .75rem; overflow: hidden; margin: 1.3rem 0; }
.report-metrics div { min-width: 0; display: grid; gap: .2rem; padding: 1rem; border-right: 1px solid var(--line); }
.report-metrics div:last-child { border: 0; }
.report-metrics strong { color: var(--accent); font-size: 1.55rem; }
.report-metrics span { color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; }
.report-section { margin-top: 1.4rem; }
.section-title { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: .7rem; }
.section-title h3, .report-caveats h3 { margin: 0; font-size: 1rem; }
.section-title p { margin: 0; color: var(--muted); font-size: .8rem; }
.bom-table { border: 1px solid var(--line); border-radius: .7rem; overflow: hidden; }
.bom-row { display: grid; grid-template-columns: .7fr 1.15fr 90px 1.45fr; align-items: center; gap: .75rem; padding: .72rem .85rem; border-bottom: 1px solid var(--line); }
.bom-row:last-child { border: 0; }
.bom-row > span:first-child, .bom-row small { color: var(--muted); font-size: .76rem; line-height: 1.4; }
.bom-row strong { font-size: .85rem; }
.bom-row b { color: var(--accent); text-align: center; }
.bom-head { background: var(--surface-2); color: var(--muted); font-size: .7rem; text-transform: uppercase; letter-spacing: .05em; }
.bom-head span { color: var(--muted) !important; }
.rack-plan-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; }
.rack-plan-card { min-width: 0; border: 1px solid var(--line); border-radius: .75rem; background: #071726; padding: 1rem; break-inside: avoid; }
.rack-plan-card.rack-overflow { border-color: var(--danger); }
.rack-plan-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.rack-plan-heading span { color: var(--muted); font-size: .72rem; text-transform: uppercase; }
.rack-plan-heading h4 { margin: .2rem 0 0; font-size: .95rem; }
.rack-plan-heading > strong { color: var(--accent); white-space: nowrap; }
.rack-port-summary { display: flex; flex-wrap: wrap; gap: .35rem; margin: .75rem 0; }
.rack-node-summary { margin: .65rem 0 0; color: var(--blue); font-size: .72rem; line-height: 1.45; }
.rack-port-summary span { padding: .3rem .45rem; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .7rem; }
.rack-plan-list { list-style: none; margin: 0; padding: .45rem; border: 6px solid #1d3548; border-radius: .45rem; display: grid; gap: 3px; background: #061321; }
.rack-plan-piece { min-width: 0; min-height: 28px; display: grid; grid-template-columns: 42px minmax(0, 1fr) 32px; align-items: center; gap: .45rem; padding: .3rem .45rem; border-left: 4px solid var(--blue); background: var(--surface-2); font-size: .76rem; }
.rack-plan-piece > span, .rack-plan-piece small { color: var(--muted); font-size: .68rem; }
.rack-plan-piece strong { overflow-wrap: anywhere; }
.rack-plan-switch { border-color: var(--accent); }.rack-plan-ups { border-color: var(--warning); }.rack-plan-gateway, .rack-plan-core, .rack-plan-controller { border-color: #b995ff; }
.rack-zero-u { margin-top: .45rem; padding: .5rem; border: 1px dashed var(--line); color: var(--muted); font-size: .75rem; }
.rack-zero-u strong { color: var(--blue); margin-right: .4rem; }
.rack-plan-card > p { margin: .65rem 0 0; font-size: .75rem; line-height: 1.45; }
.report-caveats { margin-top: 1.2rem; padding: 1rem; border-left: 3px solid var(--warning); background: rgba(255,202,103,.06); color: var(--muted); font-size: .8rem; line-height: 1.55; }
.report-caveats ul { margin: .6rem 0; padding-left: 1.2rem; }
.report-caveats p { margin: .6rem 0 0; }
.report-caveats strong { color: var(--text); }

.device-table { display: grid; gap: .7rem; }
.device-head, .device-table > label { display: grid; grid-template-columns: 1fr 110px 130px; gap: .7rem; align-items: center; }
.device-head { color: #648096; font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; padding: 0 .2rem; }
.device-table input { margin: 0; }
.progress-track { height: .55rem; background: #071726; border-radius: 999px; overflow: hidden; margin: 0 0 1.1rem; }
.progress-track span { display: block; height: 100%; background: var(--accent); transition: width .2s ease; }

footer { width: min(1180px, 90vw); margin: 0 auto; padding: 2rem 0 3rem; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 2rem; color: var(--muted); font-size: .82rem; line-height: 1.5; }

@media (max-width: 860px) {
  .intro, .workspace, .advisor-layout, .advisor-intro { grid-template-columns: 1fr; }
  .intro { gap: 1.5rem; padding-top: 3rem; }
  .card-heading { align-items: start; flex-direction: column; gap: .75rem; }
  .card-heading p { text-align: left; }
  .result-card { min-height: 430px; }
  .capacity-summary { grid-template-columns: repeat(2, 1fr); }
  .capacity-summary > div:nth-child(2) { border-right: 0; }
  .capacity-summary > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .rack-demand-grid { grid-template-columns: repeat(2, 1fr); }
  .switch-mix { grid-template-columns: repeat(3, 1fr); }
  .switch-mix > div { grid-column: 1 / -1; }
  .rack-editor-heading { align-items: flex-start; flex-direction: column; }
  .rack-editor-layout { grid-template-columns: 1fr; }
  .equipment-palette { border-right: 0; border-bottom: 1px solid var(--line); }
  .equipment-buttons { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .building-rooms, .planning-grid, .rack-plan-grid { grid-template-columns: 1fr; }
  .ap-quantity-fieldset, .rack-distribution-fieldset { grid-column: auto; }
  .rack-definition-grid { grid-template-columns: 1fr; }
  .report-metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .report-metrics div:nth-child(3) { border-right: 0; }
  .report-metrics div:nth-child(-n+3) { border-bottom: 1px solid var(--line); }
  .bom-row { grid-template-columns: .7fr 1.2fr 70px; }
  .bom-row small, .bom-head span:last-child { grid-column: 1 / -1; }
}

@media (max-width: 590px) {
  .topbar { padding: 0 4vw; }
  .brand > span:last-child { display: none; }
  .top-links { gap: .7rem; }
  .top-links .author { display: none; }
  main { width: 92vw; }
  h1 { font-size: 2.35rem; }
  .field-grid, .field-grid.compact { grid-template-columns: 1fr; }
  .device-head, .device-table > label { grid-template-columns: 1fr 82px 98px; gap: .45rem; }
  .input-card, .result-card { padding: 1.2rem; }
  .technical-note { margin: 0 .5rem; }
  footer { flex-direction: column; gap: .4rem; }
  .capacity-summary { grid-template-columns: 1fr 1fr; }
  .recommendation-grid { grid-template-columns: 1fr; }
  .rack-demand-grid { grid-template-columns: 1fr 1fr; }
  .rack-editor-heading { padding: 1rem; }
  .rack-actions { width: 100%; display: grid; grid-template-columns: 1fr; }
  .equipment-buttons { grid-template-columns: 1fr; }
  .rack-canvas-card { padding: .8rem; }
  .rack-canvas-header { align-items: flex-start; flex-direction: column; }
  .rack-usage { text-align: left; }
  .rack-piece { grid-template-columns: minmax(0, 1fr) auto; gap: .3rem; padding-inline: .35rem; }
  .rack-grip { display: none; }
  .piece-actions { grid-column: auto; }
  .rack-piece small { display: none; }
  .advisor-results-heading { align-items: flex-start; flex-direction: column; gap: .8rem; }
  .catalog-health { text-align: left; }
  .product-grid { grid-template-columns: 1fr; }
  .product-top { align-items: flex-start; flex-direction: column; }
  .building-rooms { grid-template-columns: 1fr; }
  .building-row { grid-template-columns: 1fr 1fr; }
  .building-row > strong { grid-column: auto; }
  .building-section > div:first-child { align-items: flex-start; flex-direction: column; gap: .25rem; }
  .ap-quantity-grid { grid-template-columns: 1fr 1fr; }
  .rack-identity-grid { grid-template-columns: 1fr; }
  .rack-node-grid, .rack-hardware-grid { grid-template-columns: 1fr 1fr; }
  .report-heading, .section-title { align-items: flex-start; flex-direction: column; }
  .report-actions { width: 100%; display: grid; grid-template-columns: 1fr; }
  .report-metrics { grid-template-columns: 1fr 1fr; }
  .report-metrics div, .report-metrics div:nth-child(3) { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .report-metrics div:nth-child(even), .report-metrics div:last-child { border-right: 0; }
  .bom-row { grid-template-columns: 1fr 60px; }
  .bom-row > span:first-child, .bom-row small, .bom-head span:first-child, .bom-head span:last-child { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}

@media print {
  body.print-rack { background: white; }
  body.print-rack .topbar, body.print-rack main > :not(#tool-rack), body.print-rack #tool-rack > :not(.rack-editor-layout), body.print-rack .equipment-palette, body.print-rack footer { display: none !important; }
  body.print-rack main { width: 100%; }
  body.print-rack #tool-rack { display: block !important; padding: 0; }
  body.print-rack .rack-editor-layout { display: block; border: 0; min-height: auto; }
  body.print-rack .rack-canvas-card { background: white; color: #061321; padding: 0; }
  body.print-rack .rack-canvas-header span { color: #486173; }
  body.print-rack .rack-frame { box-shadow: none; background: repeating-linear-gradient(to bottom, #f5f7f9 0, #f5f7f9 35px, #cbd6dd 36px); print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  body.print-rack .piece-actions, body.print-rack .rack-grip { display: none; }
  body.print-rack .rack-piece { grid-template-columns: 1fr; print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  body.print-advisor { background: white; color: #061321; }
  body.print-advisor .topbar, body.print-advisor .advisor-intro, body.print-advisor .advisor-layout, body.print-advisor .planning-card, body.print-advisor .advisor-results-heading, body.print-advisor .product-grid, body.print-advisor .switch-catalog, body.print-advisor .technical-note, body.print-advisor footer, body.print-advisor .report-actions { display: none !important; }
  body.print-advisor main { width: 100%; }
  body.print-advisor .advisor-workspace { padding: 0; }
  body.print-advisor .preliminary-report { margin: 0; padding: 0; border: 0; background: white; color: #061321; }
  body.print-advisor .report-metrics, body.print-advisor .bom-table, body.print-advisor .rack-plan-card { border-color: #9cacb8; }
  body.print-advisor .report-metrics div, body.print-advisor .bom-row { border-color: #c8d1d8; }
  body.print-advisor .report-metrics span, body.print-advisor .bom-row > span:first-child, body.print-advisor .bom-row small, body.print-advisor .rack-plan-heading span, body.print-advisor .rack-port-summary span, body.print-advisor .rack-plan-piece > span, body.print-advisor .rack-plan-piece small { color: #486173; }
  body.print-advisor .rack-plan-card, body.print-advisor .rack-plan-list { background: white; }
  body.print-advisor .rack-plan-piece, body.print-advisor .bom-head { background: #edf2f5; color: #061321; print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  body.print-advisor .rack-plan-grid { grid-template-columns: repeat(2, 1fr); }
}