:root {
  --ink: #17211b;
  --muted: #66716a;
  --line: #dce4de;
  --panel: #f3f7f4;
  --surface: #ffffff;
  --green: #0f7a4f;
  --green-dark: #075c3a;
  --green-pale: #e4f3eb;
  --lime: #cfe75b;
  --blue: #3267e3;
  --amber: #b97916;
  --shadow: 0 20px 60px rgba(22, 50, 34, 0.09);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: #f8faf8;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
}

button, input, select { font: inherit; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  color: white;
  background: #10251a;
  box-shadow: 0 8px 24px rgba(8, 27, 17, 0.18);
}

.brand { display: flex; gap: 12px; align-items: center; color: inherit; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px; color: #10251a; background: var(--lime); font-size: 21px; font-weight: 900; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 17px; letter-spacing: 0.01em; }
.brand small { margin-top: 2px; color: #a9b9af; font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; }
.topbar-meta { display: flex; gap: 8px; align-items: center; color: #c5d2ca; font-size: 12px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
.status-dot { width: 8px; height: 8px; border-radius: 99px; background: var(--lime); box-shadow: 0 0 0 4px rgba(207, 231, 91, 0.12); }

.app-shell { display: grid; grid-template-columns: minmax(310px, 380px) minmax(0, 1fr); max-width: 1600px; min-height: calc(100vh - 72px); margin: 0 auto; }
.control-panel { padding: 38px 30px 56px; background: var(--panel); border-right: 1px solid var(--line); }
.results { min-width: 0; padding: 38px clamp(24px, 4vw, 64px) 72px; }

.eyebrow { margin: 0 0 7px; color: var(--green); font-size: 11px; font-weight: 800; letter-spacing: 0.13em; text-transform: uppercase; }
.panel-heading h1, .results-heading h2 { margin: 0; letter-spacing: -0.035em; }
.panel-heading h1 { font-size: 28px; }
.panel-heading > p:last-child { max-width: 32ch; margin: 10px 0 28px; color: var(--muted); line-height: 1.55; }

fieldset { min-width: 0; margin: 0 0 24px; padding: 22px 0 0; border: 0; border-top: 1px solid var(--line); }
legend { padding: 0 10px 0 0; color: #34423a; font-size: 12px; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
label, .field-label { display: block; margin: 15px 0 7px; color: #445149; font-size: 12px; font-weight: 700; }
input[type="number"], select { width: 100%; height: 45px; padding: 0 13px; color: var(--ink); background: white; border: 1px solid #ccd7d0; border-radius: 9px; outline: none; transition: border-color .2s, box-shadow .2s; }
input:focus, select:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(15, 122, 79, 0.12); }
.two-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.input-suffix { position: relative; }
.input-suffix input { padding-right: 42px; }
.input-suffix span { position: absolute; right: 14px; top: 12px; color: var(--muted); font-weight: 700; }
.field-help { display: block; margin-top: 7px; color: var(--muted); font-size: 11px; line-height: 1.45; }

.segmented { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.segmented label { margin: 0; }
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented span { display: grid; place-items: center; height: 44px; color: #435047; background: white; border: 1px solid #ccd7d0; border-radius: 9px; cursor: pointer; transition: .2s; }
.segmented input:checked + span { color: white; background: var(--green); border-color: var(--green); box-shadow: 0 5px 14px rgba(15, 122, 79, 0.18); }
.segmented .sustainable-option span { gap: 1px; line-height: 1.1; }
.segmented .sustainable-option strong, .segmented .sustainable-option small { display: block; }
.segmented .sustainable-option strong { font-size: 13px; }
.segmented .sustainable-option small { color: #738078; font-size: 8px; font-weight: 700; }
.segmented .sustainable-option input:checked + span { background: linear-gradient(135deg, var(--green-dark), var(--green)); }
.segmented .sustainable-option input:checked + span small { color: #cfe4d7; }

.range-field { margin-top: 20px; }
.field-row { display: flex; align-items: center; justify-content: space-between; }
.field-row label { margin: 0; }
.field-row output { color: var(--green-dark); font-size: 16px; font-weight: 800; }
input[type="range"] { width: 100%; margin: 12px 0 2px; accent-color: var(--green); }
.range-scale { display: flex; justify-content: space-between; color: #87918b; font-size: 10px; }

.trigger-card { display: grid; grid-template-columns: 1fr auto; gap: 2px 14px; align-items: center; margin-top: 20px; padding: 15px 17px; background: var(--green-pale); border: 1px solid #c6e2d3; border-radius: 12px; }
.trigger-card span { color: var(--green-dark); font-size: 12px; font-weight: 800; }
.trigger-card strong { grid-row: span 2; color: var(--green-dark); font-size: 32px; letter-spacing: -0.04em; }
.trigger-card small { color: #5e7668; font-size: 10px; }

.primary-button { width: 100%; height: 52px; display: flex; align-items: center; justify-content: space-between; padding: 0 18px; color: white; background: var(--green); border: 0; border-radius: 11px; box-shadow: 0 10px 24px rgba(15, 122, 79, 0.22); cursor: pointer; font-weight: 800; transition: transform .15s, background .15s; }
.primary-button:hover { background: var(--green-dark); transform: translateY(-1px); }
.primary-button:active { transform: translateY(0); }
.form-error { margin: 12px 0 0; padding: 10px 12px; color: #8b2b25; background: #fff0ee; border-radius: 8px; font-size: 12px; }

.results-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.results-heading h2 { font-size: clamp(27px, 3vw, 38px); }
.run-badge, .soft-badge { white-space: nowrap; border-radius: 999px; font-weight: 700; }
.run-badge { padding: 10px 15px; color: var(--green-dark); background: var(--green-pale); font-size: 12px; }
.soft-badge { padding: 7px 10px; color: #637067; background: #f1f4f2; font-size: 11px; }

.hero-metrics { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
.hero-metrics .metric { padding: 16px; }
.hero-metrics .metric strong { font-size: clamp(19px, 1.65vw, 25px); }
.customer-summary { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
.metric { min-width: 0; padding: 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 8px 24px rgba(22, 50, 34, 0.04); }
.metric span { display: block; color: var(--muted); font-size: 11px; font-weight: 700; }
.metric strong { display: block; overflow: hidden; margin: 9px 0 4px; font-size: clamp(20px, 2vw, 29px); letter-spacing: -0.04em; text-overflow: ellipsis; white-space: nowrap; }
.metric small { color: #7c8780; font-size: 10px; }
.metric-primary { color: white; background: linear-gradient(140deg, #123d28, #0f7a4f); border-color: transparent; }
.metric-primary span, .metric-primary small { color: #c9dfd2; }
.metric-positive strong { color: var(--green); }
.metric-discount { color: white; background: var(--green-dark); border-color: transparent; }
.metric-discount span, .metric-discount small { color: #8fbea1; }
.metric-discount strong { color: #83c77e; }

.content-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr); gap: 16px; }
.card { min-width: 0; margin-bottom: 16px; padding: 23px; background: var(--surface); border: 1px solid var(--line); border-radius: 15px; box-shadow: var(--shadow); }
.card-heading { display: flex; align-items: start; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.card-heading h3 { margin: 0; font-size: 18px; letter-spacing: -0.02em; }
.table-heading { align-items: center; }

.waterfall { display: flex; height: 152px; align-items: end; gap: 10px; padding: 8px 4px 0; border-bottom: 1px solid var(--line); }
.bar-wrap { flex: 1; height: 100%; display: flex; flex-direction: column; justify-content: end; min-width: 0; }
.bar { position: relative; min-height: 4px; border-radius: 6px 6px 0 0; background: #dfe7e2; transition: height .35s ease; }
.bar.revenue { background: var(--green); }
.bar.cost { background: #90a097; }
.bar.voucher { background: #e9b665; }
.bar.profit { background: var(--lime); }
.bar-value { display: block; overflow: hidden; margin-bottom: 5px; color: #354139; font-size: 10px; font-weight: 800; text-align: center; text-overflow: ellipsis; white-space: nowrap; }
.bar-label { display: block; overflow: hidden; margin-top: 8px; color: var(--muted); font-size: 9px; font-weight: 700; text-align: center; text-overflow: ellipsis; white-space: nowrap; }
.economics-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 34px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.economics-grid div { padding: 14px; background: white; }
.economics-grid span, .economics-grid strong, .economics-grid small { display: block; }
.economics-grid span { color: var(--muted); font-size: 10px; }
.economics-grid strong { margin-top: 5px; font-size: 16px; }
.economics-grid small { margin-top: 5px; color: var(--muted); font-size: 10px; line-height: 1.4; }
.economics-grid .real-cost-summary { grid-column: 1 / -1; padding: 0; }
.economics-grid .sustainability-summary { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px; background: linear-gradient(135deg, #edf8e9, #f7fbe6); border-top: 1px solid #d6e7ca; }
.economics-grid .sustainability-summary[hidden] { display: none; }
.sustainability-summary > div { padding: 0; background: transparent; }
.economics-grid .sustainability-summary strong { color: var(--green-dark); font-size: 24px; letter-spacing: -0.04em; }
.economics-grid .sustainability-summary small { color: #5f7566; }
.sustainability-badge { flex: 0 0 auto; padding: 7px 10px; color: var(--green-dark) !important; background: var(--lime); border-radius: 999px; font-size: 9px !important; font-weight: 900; letter-spacing: .04em; text-transform: uppercase; }
.real-cost-summary > span { padding: 14px 14px 0; }
.real-cost-layout { display: grid; grid-template-columns: 1fr 1fr; align-items: stretch; }
.real-cost-layout > #voucher-cost { display: flex; align-items: center; margin: 0; padding: 18px 14px 22px; font-size: clamp(23px, 2.3vw, 34px); letter-spacing: -0.04em; }
.real-cost-highlight { padding: 14px 18px 16px; color: white; background: var(--green-dark); }
.real-cost-highlight #real-cost-rate { margin: 0; color: var(--lime); font-size: clamp(34px, 4vw, 52px); line-height: .95; letter-spacing: -0.055em; }
.economics-grid .real-cost-highlight small { color: #d9e7df; }
.economics-grid .real-cost-highlight #real-cost-detail { color: #a9c6b5; }
.flow-list { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.flow-list li { position: relative; display: grid; grid-template-columns: 32px 1fr; gap: 12px; min-height: 67px; }
.flow-list li:not(:last-child)::after { content: ""; position: absolute; top: 32px; bottom: 0; left: 15px; width: 1px; background: #cbd8d0; }
.flow-list li > span { z-index: 1; display: grid; place-items: center; width: 32px; height: 32px; color: var(--green-dark); background: var(--green-pale); border-radius: 99px; font-size: 11px; font-weight: 900; }
.flow-list strong, .flow-list small { display: block; }
.flow-list strong { margin: 2px 0 4px; font-size: 13px; }
.flow-list small { color: var(--muted); font-size: 10px; line-height: 1.45; }

.impact-card { padding: clamp(22px, 3vw, 34px); overflow: hidden; background: linear-gradient(150deg, #ffffff 55%, #f0f8f3); }
.impact-heading { display: flex; align-items: start; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.impact-heading h3 { margin: 0; font-size: clamp(24px, 3vw, 34px); letter-spacing: -0.04em; }
.impact-heading > div:first-child > p:last-child { max-width: 66ch; margin: 9px 0 0; color: var(--muted); font-size: 12px; line-height: 1.55; }
.impact-cost-pill { min-width: 210px; padding: 13px 16px; color: white; background: var(--green-dark); border-radius: 12px; }
.impact-cost-pill span, .impact-cost-pill strong { display: block; }
.impact-cost-pill span { color: #b9d3c4; font-size: 10px; font-weight: 700; }
.impact-cost-pill strong { margin-top: 5px; color: var(--lime); font-size: 21px; letter-spacing: -0.03em; }
.growth-selector { margin: 0 0 20px; padding: 0; border: 0; }
.growth-selector legend { margin-bottom: 9px; color: #445149; font-size: 11px; }
.growth-options { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.growth-options label { margin: 0; }
.growth-options input { position: absolute; opacity: 0; pointer-events: none; }
.growth-options span { display: grid; place-items: center; min-height: 44px; color: #435047; background: white; border: 1px solid #cbd7cf; border-radius: 9px; cursor: pointer; font-size: 13px; font-weight: 800; transition: .2s; }
.growth-options input:focus-visible + span { box-shadow: 0 0 0 3px rgba(15, 122, 79, 0.16); }
.growth-options input:checked + span { color: white; background: var(--green); border-color: var(--green); box-shadow: 0 7px 18px rgba(15, 122, 79, 0.2); }
.impact-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; overflow: hidden; background: var(--line); border: 1px solid var(--line); border-radius: 12px; }
.impact-metrics article { min-width: 0; padding: 17px; background: white; }
.impact-metrics span, .impact-metrics strong, .impact-metrics small { display: block; }
.impact-metrics span { color: var(--muted); font-size: 10px; font-weight: 700; }
.impact-metrics strong { overflow: hidden; margin-top: 7px; font-size: clamp(18px, 2vw, 26px); letter-spacing: -0.04em; text-overflow: ellipsis; white-space: nowrap; }
.impact-metrics small { margin-top: 4px; color: #849087; font-size: 9px; }
.impact-metrics .impact-accent strong { color: var(--green); }
.impact-metrics .impact-bottom-line { color: white; background: var(--green-dark); }
.impact-metrics .impact-bottom-line span, .impact-metrics .impact-bottom-line small { color: #b9d3c4; }
.impact-metrics .impact-bottom-line strong { color: var(--lime); }
.impact-metrics .impact-bottom-line.is-negative strong { color: #ffd2c9; }
.impact-insight-grid { display: grid; grid-template-columns: minmax(240px, .7fr) minmax(340px, 1.3fr); gap: 12px; margin-top: 12px; }
.coverage-card, .break-even-card { padding: 20px; border-radius: 12px; }
.coverage-card { background: #f5f8f6; border: 1px solid var(--line); }
.coverage-card > span, .coverage-card > strong, .coverage-card > small { display: block; }
.coverage-card > span { color: var(--muted); font-size: 10px; font-weight: 700; }
.coverage-card > strong { margin: 7px 0 10px; color: var(--green-dark); font-size: 28px; letter-spacing: -0.04em; }
.coverage-card > small { margin-top: 8px; color: var(--muted); font-size: 10px; line-height: 1.45; }
.coverage-track { height: 8px; overflow: hidden; background: #dfe8e2; border-radius: 99px; }
.coverage-track span { display: block; width: 0; height: 100%; background: linear-gradient(90deg, var(--green), var(--lime)); border-radius: inherit; transition: width .3s ease; }
.break-even-card { color: white; background: linear-gradient(135deg, #10251a, #075c3a); }
.break-even-card p { margin: 0 0 14px; color: #c7dacf; font-size: 12px; font-weight: 700; line-height: 1.45; }
.break-even-card strong, .break-even-card span, .break-even-card small { display: block; }
.break-even-card strong { color: var(--lime); font-size: clamp(38px, 5vw, 60px); line-height: .95; letter-spacing: -0.06em; }
.break-even-card span { margin-top: 10px; font-size: 14px; font-weight: 800; line-height: 1.4; }
.break-even-card small { margin-top: 8px; color: #a9c6b5; font-size: 10px; line-height: 1.5; }
.impact-disclaimer { margin: 16px 2px 0; color: #7d8981; font-size: 9px; line-height: 1.5; }

.table-wrap { width: 100%; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 12px; }
th { padding: 10px 12px; color: #748078; background: #f5f7f5; border-bottom: 1px solid var(--line); font-size: 9px; letter-spacing: 0.06em; text-align: right; text-transform: uppercase; white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
td { padding: 12px; border-bottom: 1px solid #edf1ee; text-align: right; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: #fbfcfb; }
.customer-value-summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-bottom: 16px; }
.customer-value-summary article { min-width: 0; padding: 14px; background: #f5f8f6; border: 1px solid var(--line); border-radius: 10px; }
.customer-value-summary span, .customer-value-summary strong { display: block; }
.customer-value-summary span { color: var(--muted); font-size: 9px; font-weight: 700; }
.customer-value-summary strong { overflow: hidden; margin-top: 6px; color: var(--green-dark); font-size: clamp(17px, 2vw, 23px); letter-spacing: -0.035em; text-overflow: ellipsis; white-space: nowrap; }
.customer-value-table-wrap { max-height: 430px; border: 1px solid var(--line); border-radius: 10px; }
.customer-value-table-wrap thead { position: sticky; top: 0; z-index: 1; }
.customer-value-table-wrap tbody tr:first-child td { background: #f4faed; }
.customer-value-table-wrap td:nth-child(3) strong { color: var(--green); }
.progress-cell { min-width: 140px; }
.progress-line { display: flex; align-items: center; justify-content: end; gap: 8px; }
.progress-track { width: 78px; height: 6px; overflow: hidden; background: #e8ede9; border-radius: 99px; }
.progress-fill { height: 100%; background: var(--green); border-radius: inherit; }
.empty-state { margin: 12px 0 0; padding: 20px; color: var(--muted); background: #f7f9f7; border-radius: 9px; text-align: center; }

.voucher-lookup { display: grid; grid-template-columns: minmax(180px, 1fr) auto; gap: 12px; align-items: end; margin-bottom: 16px; padding: 16px; background: #f5f8f6; border: 1px solid var(--line); border-radius: 11px; }
.voucher-lookup label { margin-top: 0; }
.voucher-lookup button { height: 45px; padding: 0 18px; color: white; background: var(--green); border: 0; border-radius: 9px; cursor: pointer; font-weight: 800; }
.voucher-result { display: grid; gap: 5px; margin-bottom: 16px; padding: 18px; color: var(--green-dark); background: var(--green-pale); border: 1px solid #c6e2d3; border-radius: 11px; }
.voucher-result span, .voucher-result small { font-size: 11px; }
.voucher-result strong { font-size: 24px; }
.voucher-result-error { color: #8b2b25; background: #fff0ee; border-color: #f0d0cc; }
.voucher-result-table { margin-top: 10px; background: white; border: 1px solid #dce9e1; border-radius: 9px; }
.voucher-result-table table { min-width: 520px; }

.assumptions { margin-top: 4px; color: var(--muted); background: white; border: 1px solid var(--line); border-radius: 12px; }
.assumptions summary { padding: 16px 18px; color: #445149; cursor: pointer; font-size: 12px; font-weight: 800; }
.assumptions div { padding: 0 18px 12px; font-size: 11px; line-height: 1.6; }

@media (max-width: 1120px) {
  .hero-metrics { grid-template-columns: 1fr 1fr; }
  .content-grid { grid-template-columns: 1fr; }
  .impact-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .customer-value-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 800px) {
  .topbar { padding: 0 18px; }
  .app-shell { display: block; }
  .control-panel { border-right: 0; border-bottom: 1px solid var(--line); }
  .results { padding: 30px 18px 56px; }
}

@media (max-width: 520px) {
  .topbar-meta { display: none; }
  .control-panel { padding: 30px 18px 42px; }
  .results-heading { align-items: start; flex-direction: column; }
  .hero-metrics { grid-template-columns: 1fr; }
  .customer-summary { grid-template-columns: 1fr; }
  .economics-grid { grid-template-columns: 1fr; }
  .real-cost-layout { grid-template-columns: 1fr; }
  .card { padding: 18px; }
  .voucher-lookup { grid-template-columns: 1fr; }
  .impact-heading { flex-direction: column; }
  .impact-cost-pill { width: 100%; }
  .growth-options { grid-template-columns: repeat(5, minmax(48px, 1fr)); overflow-x: auto; }
  .impact-metrics, .impact-insight-grid { grid-template-columns: 1fr; }
  .economics-grid .sustainability-summary { align-items: start; flex-direction: column; }
  .customer-value-summary { grid-template-columns: 1fr; }
}

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