/* =========================================================================
   REV.health investor portal (open) — styling.
   CSS-first: layout, toggles and section rhythm are native CSS. JS only
   injects model-driven numbers. REV.health branding only.
   ========================================================================= */

:root {
  --bg: #0b1220;
  --bg-alt: #0e1729;
  --panel: #131c30;
  --panel-2: #18233b;
  --line: #243149;
  --ink: #eaf1fb;
  --ink-dim: #9fb0c9;
  --ink-faint: #6b7d99;
  --brand-a: #4ea1ff;
  --brand-b: #5ce0b8;
  --accent: #5ce0b8;
  --warn: #ffb454;
  --maxw: 1240px;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html { scroll-padding-top: 76px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand-a); }

/* ---- Topbar ---------------------------------------------------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 12px clamp(16px, 4vw, 40px);
  background: rgba(11, 18, 32, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  text-decoration: none;
  font-weight: 800;
  font-size: 19px;
  color: var(--ink);
}
.brand-logo { display: block; }
.brand-word { letter-spacing: 0.2px; }

.topnav {
  display: flex;
  gap: 6px;
  flex: 1;
  flex-wrap: wrap;
}
.topnav a {
  text-decoration: none;
  color: var(--ink-dim);
  font-weight: 500;
  font-size: 14px;
  padding: 7px 12px;
  border-radius: 8px;
}
.topnav a:hover { color: var(--ink); background: var(--panel); }
.topnav a[aria-current] { color: var(--ink); background: var(--panel); font-weight: 600; }

/* secondary in-page section nav (portal/index only) — keeps the primary header identical across pages */
.subnav {
  display: flex; gap: 4px; flex-wrap: wrap; align-items: center;
  padding: 8px clamp(16px, 4vw, 40px);
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.subnav a { text-decoration: none; color: var(--ink-dim); font-size: 13px; font-weight: 500; padding: 5px 11px; border-radius: 7px; }
.subnav a:hover { color: var(--ink); background: var(--panel); }

.confidential {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--warn);
  border: 1px solid rgba(255, 180, 84, 0.4);
  border-radius: 999px;
  padding: 4px 11px;
  white-space: nowrap;
}

/* ---- Sections -------------------------------------------------------- */
.section {
  padding: clamp(48px, 7vw, 96px) clamp(16px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
}
.section-alt { background: var(--bg-alt); }
.section-inner { max-width: var(--maxw); margin: 0 auto; width: 100%; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 1.4px;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 14px;
}
.hero-title {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: clamp(34px, 5.4vw, 60px);
  line-height: 1.05;
  margin: 0 0 18px;
  letter-spacing: -0.5px;
  background: linear-gradient(120deg, var(--brand-a), var(--brand-b));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lede {
  font-size: clamp(16px, 1.7vw, 20px);
  color: var(--ink-dim);
  max-width: 880px;
  margin: 0 0 38px;
}

.section-head { margin-bottom: 30px; }
.section-head h2 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: clamp(26px, 3.4vw, 38px);
  margin: 0 0 8px;
}
.section-sub { color: var(--ink-dim); margin: 0; max-width: 820px; font-size: 16px; }

/* ---- KPI grid -------------------------------------------------------- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.kpi-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 116px;
}
.kpi-card.is-primary {
  background: linear-gradient(160deg, rgba(78, 161, 255, 0.14), rgba(92, 224, 184, 0.08));
  border-color: rgba(92, 224, 184, 0.35);
}
.kpi-label {
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--ink-faint);
  font-weight: 600;
}
.kpi-value {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.5px;
}
.kpi-sub { font-size: 13px; color: var(--ink-dim); }

.kpi-skeleton, .deck-loading {
  grid-column: 1 / -1;
  color: var(--ink-faint);
  font-size: 15px;
  padding: 28px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  text-align: center;
}
.unavailable {
  grid-column: 1 / -1;
  color: var(--warn);
  background: rgba(255, 180, 84, 0.08);
  border: 1px solid rgba(255, 180, 84, 0.3);
  border-radius: var(--radius);
  padding: 22px 24px;
  font-size: 15px;
}

/* ---- Deck ------------------------------------------------------------ */
.deck-host {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #0a0f1c;
  box-shadow: var(--shadow);
}
.deck-host iframe, .deck-host embed {
  display: block;
  width: 100%;
  height: min(78vh, 760px);
  border: 0;
  background: #fff;
}
.deck-actions { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 10px; }
.deck-pptx-note { margin: 10px 0 0; font-size: 13.5px; color: var(--ink-dim); }
.deck-pptx-note a { color: var(--brand-b); }

/* ---- Proformas ------------------------------------------------------- */
.proforma-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.proforma-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
}
.proforma-card h3 { margin: 0; font-size: 18px; }
.proforma-card .pf-meta { color: var(--ink-dim); font-size: 13.5px; margin: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-download {
  align-self: flex-start;
  background: linear-gradient(120deg, var(--brand-a), var(--brand-b));
  color: #07101f;
}
.btn-download:hover { filter: brightness(1.06); }
.btn-secondary {
  align-self: flex-start;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--ink);
}
.btn-secondary:hover { border-color: var(--brand-b); color: var(--brand-b); }

/* ---- Walkthrough ----------------------------------------------------- */
.walkthrough {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.walk-step {
  counter-increment: step;
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px 22px 74px;
}
.walk-step::before {
  content: counter(step);
  position: absolute;
  left: 22px;
  top: 22px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  color: #07101f;
  background: linear-gradient(120deg, var(--brand-a), var(--brand-b));
}
.walk-step h3 { margin: 0 0 6px; font-size: 19px; }
.walk-why {
  margin: 8px 0 0;
  color: var(--ink-dim);
}
.walk-why b { color: var(--ink); }
.walk-metric {
  display: inline-flex;
  flex-direction: column;
  margin-top: 14px;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--panel-2);
  border: 1px solid var(--line);
}
.walk-metric .m-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 22px;
  color: var(--accent);
}
.walk-metric .m-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--ink-faint);
}

@media (min-width: 760px) {
  .walkthrough { grid-template-columns: 1fr 1fr; }
}

/* ---- Scenario explorer ---------------------------------------------- */
.explorer-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  margin-bottom: 18px;
}
.control-group { display: flex; flex-direction: column; gap: 8px; }
.control-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--ink-faint);
  font-weight: 600;
}
.toggle {
  display: inline-flex;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 4px;
  gap: 4px;
}
.toggle button {
  border: 0;
  background: transparent;
  color: var(--ink-dim);
  font-weight: 600;
  font-size: 14px;
  padding: 9px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
}
.toggle button[aria-selected="true"] {
  background: linear-gradient(120deg, var(--brand-a), var(--brand-b));
  color: #07101f;
}
.explorer-caption {
  color: var(--ink-dim);
  font-size: 14px;
  margin: 0 0 18px;
}
.explorer-caption b { color: var(--ink); }

/* ---- Footer ---------------------------------------------------------- */
.footer {
  padding: 26px clamp(16px, 4vw, 40px);
  color: var(--ink-faint);
  font-size: 13px;
  text-align: center;
}

/* ---- Mobile ---------------------------------------------------------- */
@media (max-width: 720px) {
  .topbar { gap: 12px; flex-wrap: wrap; }
  .topnav { order: 3; width: 100%; gap: 2px; }
  .topnav a { padding: 6px 9px; font-size: 13px; }
  .confidential { margin-left: auto; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 430px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .deck-host iframe, .deck-host embed { height: 62vh; }
}