:root {
  color-scheme: dark;
  --bg: #071310;
  --surface: #0d201b;
  --surface-raised: #122a23;
  --line: rgba(209, 255, 231, 0.12);
  --text: #f0f7f4;
  --muted: #9eb8ae;
  --accent: #61e5a8;
  --accent-strong: #39c98c;
  --accent-soft: rgba(97, 229, 168, 0.12);
  --danger: #ff9d9d;
  --shadow: 0 26px 70px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 80% 0%, rgba(62, 197, 140, 0.13), transparent 32rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button, input { font: inherit; }

.page-shell {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
  padding: 72px 0 32px;
}

.hero { max-width: 720px; margin-bottom: 44px; }
.eyebrow { margin: 0 0 12px; color: var(--accent); font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
h1 { margin: 0; max-width: 680px; font-size: clamp(2.5rem, 8vw, 5.3rem); line-height: .98; letter-spacing: -.065em; }
.hero-copy { max-width: 600px; margin: 24px 0 0; color: var(--muted); font-size: clamp(1rem, 2vw, 1.16rem); }

.simulator { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: 24px; align-items: start; }
.form-card, .results, .chart-card, .details-card { border: 1px solid var(--line); background: rgba(13, 32, 27, .88); box-shadow: var(--shadow); backdrop-filter: blur(12px); }
.form-card { position: sticky; top: 24px; border-radius: 24px; padding: 28px; }
.results { border-radius: 24px; padding: 28px; }
.section-heading { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 28px; }
.section-heading h2, .chart-heading h3 { margin: 0; font-size: 1.16rem; letter-spacing: -.02em; }
.section-heading p, .chart-heading p { margin: 4px 0 0; color: var(--muted); font-size: .88rem; }
.step { display: grid; place-items: center; flex: 0 0 34px; height: 34px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-size: .72rem; font-weight: 800; }

.field-grid { display: grid; gap: 18px; }
.field { display: grid; gap: 7px; color: var(--muted); font-size: .84rem; font-weight: 650; }
.asset-search { margin-bottom: 18px; }
.search-wrap { min-height: 52px; display: grid; grid-template-columns: minmax(0, 1fr) auto; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: rgba(255,255,255,.025); transition: border-color .2s, box-shadow .2s; }
.search-wrap:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(97,229,168,.12); }
.search-wrap input { width: 100%; min-width: 0; padding: 0 15px; border: 0; outline: 0; background: transparent; color: var(--text); font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.search-wrap button { min-width: 86px; padding: 0 14px; border: 0; border-left: 1px solid var(--line); background: var(--accent-soft); color: var(--accent); cursor: pointer; font-weight: 800; }
.search-wrap button:hover { background: rgba(97,229,168,.2); }
.search-wrap button:disabled { cursor: wait; opacity: .65; }
.search-status { margin: 7px 0 0; color: var(--muted); font-size: .72rem; }
.search-status.is-error { color: var(--danger); }
.field-hint { color: var(--muted); font-size: .7rem; font-weight: 500; }
.asset-info { margin: 0 0 20px; padding: 15px; border: 1px solid rgba(97,229,168,.2); border-radius: 14px; background: var(--accent-soft); }
.asset-title { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.asset-title > div { display: grid; min-width: 0; }
.asset-title strong { color: var(--accent); letter-spacing: .04em; }
.asset-title span:not(.change-badge) { overflow: hidden; color: var(--muted); font-size: .72rem; text-overflow: ellipsis; white-space: nowrap; }
.change-badge { flex: none; padding: 4px 7px; border-radius: 999px; background: rgba(255,255,255,.06); font-size: .7rem; font-weight: 800; }
.change-badge.is-positive { color: var(--accent); }
.change-badge.is-negative { color: var(--danger); }
.asset-info dl { display: grid; grid-template-columns: repeat(auto-fit, minmax(112px, 1fr)); gap: 10px 8px; margin: 14px 0 10px; }
.asset-info dl div { min-width: 0; }
.asset-info dt { color: var(--muted); font-size: .65rem; }
.asset-info dd { margin: 2px 0 0; overflow-wrap: anywhere; font-size: .78rem; font-weight: 750; }
.asset-info > small { color: var(--muted); font-size: .66rem; }
.input-wrap { min-height: 52px; display: flex; align-items: center; gap: 10px; padding: 0 15px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.025); transition: border-color .2s, box-shadow .2s; }
.input-wrap:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(97,229,168,.12); }
.input-wrap b { color: var(--muted); font-size: .8rem; white-space: nowrap; }
.input-wrap input { width: 100%; min-width: 0; padding: 0; border: 0; outline: 0; background: transparent; color: var(--text); font-size: 1rem; font-weight: 700; }
.input-wrap:has(input[aria-invalid="true"]) { border-color: var(--danger); }
.error { min-height: 0; color: var(--danger); font-size: .76rem; font-weight: 500; }
.error:empty { display: none; }

.primary-button { width: 100%; min-height: 54px; margin-top: 24px; padding: 0 20px; border: 0; border-radius: 13px; display: flex; align-items: center; justify-content: space-between; background: var(--accent); color: #052117; cursor: pointer; font-weight: 800; transition: transform .2s, background .2s; }
.primary-button:hover { background: var(--accent-strong); transform: translateY(-1px); }
.primary-button:active { transform: translateY(0); }
.primary-button:focus-visible, summary:focus-visible { outline: 3px solid rgba(97,229,168,.35); outline-offset: 3px; }

.metric-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.metric { min-height: 138px; padding: 18px; border: 1px solid var(--line); border-radius: 16px; display: flex; flex-direction: column; justify-content: space-between; background: rgba(255,255,255,.022); }
.metric-primary { background: var(--accent-soft); border-color: rgba(97,229,168,.25); }
.metric > span { color: var(--muted); font-size: .8rem; }
.metric strong { margin: 12px 0 5px; overflow-wrap: anywhere; font-size: clamp(1.35rem, 3vw, 2rem); line-height: 1.05; letter-spacing: -.045em; }
.metric small { color: var(--muted); font-size: .72rem; }
.metric-primary strong { color: var(--accent); }

.chart-card { margin-top: 12px; padding: 20px; border-radius: 16px; box-shadow: none; }
.chart-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.chart-badge { flex: none; padding: 5px 9px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-size: .72rem; font-weight: 750; }
.chart { height: 190px; margin-top: 20px; }
.chart svg { display: block; width: 100%; height: 100%; overflow: visible; }
.chart-grid { stroke: var(--line); stroke-width: 1; }
.chart-area { fill: url(#chart-gradient); }
.chart-line { fill: none; stroke: var(--accent); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.chart-dot { fill: var(--accent); stroke: var(--surface); stroke-width: 3; }
.chart-label { fill: var(--muted); font-size: 11px; }

.details-card { margin-top: 12px; border-radius: 16px; box-shadow: none; overflow: hidden; }
summary { min-height: 58px; padding: 0 18px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-size: .9rem; font-weight: 700; list-style: none; }
summary::-webkit-details-marker { display: none; }
details[open] summary { border-bottom: 1px solid var(--line); }
details[open] summary span { transform: rotate(180deg); }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .8rem; white-space: nowrap; }
th, td { padding: 12px 16px; border-bottom: 1px solid var(--line); text-align: right; }
th { color: var(--muted); font-size: .68rem; letter-spacing: .04em; text-transform: uppercase; }
th:first-child, td:first-child { text-align: left; }
tbody tr:last-child td { border-bottom: 0; }

footer { padding-top: 30px; color: var(--muted); font-size: .75rem; text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@media (max-width: 840px) {
  .page-shell { padding-top: 44px; }
  .simulator { grid-template-columns: 1fr; }
  .form-card { position: static; }
}

@media (max-width: 520px) {
  .page-shell { width: min(100% - 24px, 1120px); padding-top: 32px; }
  .hero { margin-bottom: 30px; }
  .hero-copy { margin-top: 18px; }
  .form-card, .results { padding: 20px; border-radius: 20px; }
  .section-heading { margin-bottom: 22px; }
  .metric-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .metric { min-height: 126px; padding: 14px; }
  .metric strong { font-size: clamp(1.12rem, 6vw, 1.55rem); }
  .chart-card { padding: 16px; }
  .chart { height: 165px; }
}

@media (max-width: 370px) {
  .metric-grid { grid-template-columns: 1fr; }
  .metric { min-height: 112px; }
}

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