/* ─── USEPA RaC — design tokens ─────────────────────────────────────── */
:root {
  /* Deep blue palette inspired by the reference login */
  --rac-bg: #f6f7fb;
  --rac-surface: #ffffff;
  --rac-surface-alt: #fafbfd;
  --rac-ink: #0b1330;
  --rac-ink-2: #2a3357;
  --rac-muted: #6b7494;
  --rac-line: #e3e7f0;
  --rac-line-strong: #cdd4e4;

  --rac-primary: #2740ee;       /* electric indigo from reference */
  --rac-primary-700: #1d31c4;
  --rac-primary-50: #ecefff;

  --rac-navy: #0f1846;          /* deep marketing navy */
  --rac-navy-2: #1b2a6b;

  --rac-accent: #1ed1a8;        /* mint/teal cube accent */
  --rac-accent-2: #4f7cff;      /* secondary blue cube */

  --rac-pass: #0d8a5a;
  --rac-pass-bg: #e6f6ee;
  --rac-fail: #c0364c;
  --rac-fail-bg: #fdebee;
  --rac-warn: #c47a09;
  --rac-warn-bg: #fff5dc;

  --rac-radius: 10px;
  --rac-radius-lg: 16px;
  --rac-shadow-sm: 0 1px 2px rgba(13, 22, 64, 0.06), 0 0 0 1px rgba(13, 22, 64, 0.04);
  --rac-shadow-md: 0 4px 14px rgba(13, 22, 64, 0.08), 0 0 0 1px rgba(13, 22, 64, 0.04);
  --rac-shadow-lg: 0 22px 60px rgba(13, 22, 64, 0.18);

  --font-sans: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-display: "DM Sans", "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body, #root { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  color: var(--rac-ink);
  background: var(--rac-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -0.01em; margin: 0; color: var(--rac-ink); }
p { margin: 0; }
button { font-family: inherit; cursor: pointer; }
a { color: var(--rac-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── App shell ──────────────────────────────────────────────────────── */
.rac-app { min-height: 100vh; display: flex; flex-direction: column; }
.rac-main { flex: 1; min-height: 0; display: flex; }
.rac-content { flex: 1; min-width: 0; overflow-y: auto; }
.rac-page { max-width: 1280px; margin: 0 auto; padding: 36px 40px 80px; }
.rac-page--narrow { max-width: 920px; }

/* ─── Top nav ────────────────────────────────────────────────────────── */
.rac-nav {
  height: 60px;
  background: #fff;
  border-bottom: 1px solid var(--rac-line);
  display: flex;
  align-items: center;
  padding: 0 28px;
  gap: 18px;
  position: sticky;
  top: 0;
  z-index: 30;
}
.rac-nav__brand {
  display: flex; align-items: center; gap: 10px;
  background: none; border: 0; padding: 0; color: var(--rac-ink);
}
.rac-nav__mark {
  height: 28px; width: 28px; border-radius: 7px;
  background: linear-gradient(135deg, var(--rac-primary) 0%, var(--rac-navy) 100%);
  display: grid; place-items: center; color: #fff;
}
.rac-nav__title { font-family: var(--font-display); font-weight: 700; font-size: 15px; letter-spacing: -0.01em; }
.rac-nav__sub { color: var(--rac-muted); font-size: 12px; font-weight: 500; padding-left: 10px; border-left: 1px solid var(--rac-line); margin-left: 4px; }
.rac-nav__crumbs { color: var(--rac-muted); font-size: 13px; display: flex; align-items: center; gap: 8px; }
.rac-nav__crumbs span.sep { color: var(--rac-line-strong); }
.rac-nav__crumbs strong { color: var(--rac-ink); font-weight: 600; }
.rac-nav__spacer { flex: 1; }
.rac-nav__role {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 10px 5px 6px; border-radius: 999px;
  background: var(--rac-primary-50); color: var(--rac-navy);
  font-size: 12px; font-weight: 600;
  border: 1px solid #d8defc;
}
.rac-nav__role .dot { width: 22px; height: 22px; border-radius: 50%; background: var(--rac-primary); color: #fff; display: grid; place-items: center; font-size: 10px; font-weight: 700; }
.rac-nav__role.is-regulator { background: #f0ecfd; border-color: #ddd5fa; color: #2c1c70; }
.rac-nav__role.is-regulator .dot { background: #5b3fd1; }
.rac-nav__btn {
  height: 32px; padding: 0 12px; border-radius: 8px;
  border: 1px solid var(--rac-line); background: #fff;
  color: var(--rac-ink-2); font-size: 13px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 6px;
}
.rac-nav__btn:hover { border-color: var(--rac-line-strong); background: var(--rac-surface-alt); }

/* ─── Step indicator (sidebar) ───────────────────────────────────────── */
.rac-steps {
  width: 264px;
  flex-shrink: 0;
  background: #fff;
  border-right: 1px solid var(--rac-line);
  padding: 28px 16px;
  overflow-y: auto;
}
.rac-steps__title { font-size: 11px; font-weight: 700; color: var(--rac-muted); letter-spacing: 0.1em; text-transform: uppercase; padding: 0 12px 16px; }
.rac-step {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: none; border: 0; width: 100%; text-align: left;
  position: relative;
  color: var(--rac-ink-2);
  margin-bottom: 2px;
}
.rac-step:hover { background: var(--rac-surface-alt); }
.rac-step.is-active { background: var(--rac-primary-50); color: var(--rac-navy); }
.rac-step.is-locked { opacity: 0.5; cursor: not-allowed; }
.rac-step__dot {
  flex-shrink: 0;
  width: 24px; height: 24px; border-radius: 50%;
  border: 1.5px solid var(--rac-line-strong);
  background: #fff;
  display: grid; place-items: center;
  font-size: 11px; font-weight: 600;
  color: var(--rac-muted);
}
.rac-step.is-complete .rac-step__dot { background: var(--rac-pass); border-color: var(--rac-pass); color: #fff; }
.rac-step.is-active .rac-step__dot { border-color: var(--rac-primary); color: var(--rac-primary); }
.rac-step.is-active.is-complete .rac-step__dot { background: var(--rac-primary); border-color: var(--rac-primary); color: #fff; }
.rac-step__body { flex: 1; min-width: 0; }
.rac-step__label { display: block; font-size: 13px; font-weight: 600; color: var(--rac-ink); }
.rac-step.is-locked .rac-step__label { color: var(--rac-muted); }
.rac-step__hint { display: block; font-size: 11.5px; color: var(--rac-muted); margin-top: 2px; line-height: 1.4; }
/* connector */
.rac-step + .rac-step::before {
  content: ""; position: absolute; left: 24px; top: -3px; width: 1.5px; height: 8px;
  background: var(--rac-line-strong);
}

/* ─── Buttons ────────────────────────────────────────────────────────── */
.rac-btn {
  height: 40px; padding: 0 18px; border-radius: 8px;
  border: 1px solid transparent; font-size: 14px; font-weight: 600;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  transition: background 120ms, border-color 120ms, color 120ms;
}
.rac-btn--primary { background: var(--rac-primary); color: #fff; }
.rac-btn--primary:hover { background: var(--rac-primary-700); }
.rac-btn--primary:disabled { background: var(--rac-line-strong); color: #fff; cursor: not-allowed; }
.rac-btn--ghost { background: #fff; color: var(--rac-ink); border-color: var(--rac-line); }
.rac-btn--ghost:hover { background: var(--rac-surface-alt); border-color: var(--rac-line-strong); }
.rac-btn--danger { background: var(--rac-fail); color: #fff; }
.rac-btn--success { background: var(--rac-pass); color: #fff; }
.rac-btn--lg { height: 48px; padding: 0 24px; font-size: 15px; }
.rac-btn--sm { height: 30px; padding: 0 12px; font-size: 12.5px; border-radius: 7px; }

/* ─── Cards ──────────────────────────────────────────────────────────── */
.rac-card {
  background: #fff;
  border: 1px solid var(--rac-line);
  border-radius: var(--rac-radius-lg);
  box-shadow: var(--rac-shadow-sm);
}
.rac-card__head { padding: 20px 24px; border-bottom: 1px solid var(--rac-line); }
.rac-card__body { padding: 24px; }
.rac-card__title { font-size: 16px; font-weight: 700; }
.rac-card__sub { font-size: 13px; color: var(--rac-muted); margin-top: 2px; }

/* ─── Tables ─────────────────────────────────────────────────────────── */
.rac-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13px; }
.rac-table th, .rac-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--rac-line); }
.rac-table th { background: var(--rac-surface-alt); color: var(--rac-muted); font-weight: 600; font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.05em; }
.rac-table tbody tr:hover { background: var(--rac-surface-alt); }
.rac-table tbody tr:last-child td { border-bottom: 0; }

/* ─── Pills / tags ───────────────────────────────────────────────────── */
.rac-pill {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 9px; border-radius: 999px; font-size: 11.5px; font-weight: 600;
  border: 1px solid var(--rac-line);
}
.rac-pill--pass { color: var(--rac-pass); background: var(--rac-pass-bg); border-color: #c4e9d4; }
.rac-pill--fail { color: var(--rac-fail); background: var(--rac-fail-bg); border-color: #f4ccd2; }
.rac-pill--warn { color: var(--rac-warn); background: var(--rac-warn-bg); border-color: #f4dca0; }
.rac-pill--info { color: var(--rac-navy); background: var(--rac-primary-50); border-color: #d8defc; }
.rac-pill--mute { color: var(--rac-muted); background: var(--rac-surface-alt); }

/* ─── Form controls ──────────────────────────────────────────────────── */
.rac-input, .rac-select, .rac-textarea {
  width: 100%; height: 40px; padding: 0 12px;
  border: 1px solid var(--rac-line-strong); border-radius: 8px;
  font: inherit; color: var(--rac-ink); background: #fff;
  transition: border-color 120ms, box-shadow 120ms;
}
.rac-textarea { height: auto; min-height: 92px; padding: 10px 12px; resize: vertical; }
.rac-input:focus, .rac-select:focus, .rac-textarea:focus {
  outline: none; border-color: var(--rac-primary);
  box-shadow: 0 0 0 3px rgba(39, 64, 238, 0.15);
}
.rac-label { font-size: 12px; font-weight: 600; color: var(--rac-ink-2); display: block; margin-bottom: 6px; }
.rac-field-hint { font-size: 12px; color: var(--rac-muted); margin-top: 6px; }
.rac-field { margin-bottom: 18px; }
.rac-field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* checkbox */
.rac-check { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.rac-check input { appearance: none; width: 16px; height: 16px; border: 1.5px solid var(--rac-line-strong); border-radius: 4px; background: #fff; display: grid; place-items: center; }
.rac-check input:checked { background: var(--rac-primary); border-color: var(--rac-primary); }
.rac-check input:checked::after { content: "✓"; color: #fff; font-size: 11px; line-height: 1; }

/* ─── Banner ─────────────────────────────────────────────────────────── */
.rac-banner {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 16px; border-radius: 10px;
  border: 1px solid var(--rac-line); background: var(--rac-surface-alt);
}
.rac-banner--pass { background: var(--rac-pass-bg); border-color: #b8e3cb; color: #0a5a3a; }
.rac-banner--fail { background: var(--rac-fail-bg); border-color: #f1c1c8; color: #832231; }
.rac-banner--warn { background: var(--rac-warn-bg); border-color: #efd28b; color: #6f4806; }
.rac-banner--info { background: var(--rac-primary-50); border-color: #d4daf9; color: var(--rac-navy); }

/* ─── Modal ──────────────────────────────────────────────────────────── */
.rac-modal-overlay {
  position: fixed; inset: 0; background: rgba(11, 19, 48, 0.45);
  display: grid; place-items: center; z-index: 100;
  animation: rac-fade 160ms ease-out;
}
.rac-modal {
  background: #fff; border-radius: 16px; box-shadow: var(--rac-shadow-lg);
  width: min(520px, calc(100vw - 40px));
  animation: rac-pop 180ms cubic-bezier(.18,.89,.32,1.28);
}
@keyframes rac-fade { from { opacity: 0; } }
@keyframes rac-pop { from { transform: translateY(8px) scale(.96); opacity: 0; } }

/* ─── Footer ─────────────────────────────────────────────────────────── */
.rac-footer {
  padding: 14px 28px; font-size: 11.5px; color: var(--rac-muted);
  border-top: 1px solid var(--rac-line); background: #fff;
  display: flex; align-items: center; gap: 16px;
}
.rac-footer__pill { display: inline-flex; align-items: center; gap: 6px; padding: 3px 9px; background: var(--rac-warn-bg); color: var(--rac-warn); border-radius: 4px; font-weight: 600; font-size: 11px; }

/* ─── Misc ───────────────────────────────────────────────────────────── */
.rac-mono { font-family: var(--font-mono); font-size: 12.5px; }
.rac-divider { height: 1px; background: var(--rac-line); margin: 24px 0; }
.rac-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.rac-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.rac-stack { display: flex; flex-direction: column; gap: 16px; }
.rac-row { display: flex; align-items: center; gap: 12px; }
.rac-row--end { justify-content: flex-end; }
.rac-row--between { justify-content: space-between; }

/* ─── Print (Download PDF for assessment report) ─────────────────────── */
@media print {
  @page { size: A4 portrait; margin: 14mm; }
  html, body { background: #fff !important; }
  .rac-nav, .rac-footer, .rac-steps, .rac-page__actions, .rac-print-hide { display: none !important; }
  .rac-content { overflow: visible !important; }
  .rac-page { max-width: none !important; padding: 0 !important; }
  .rac-card { box-shadow: none !important; border: 1px solid #d4d8e2 !important; break-inside: avoid; }
  .rac-banner { break-inside: avoid; }
  /* Sticky regulator action bar — hide on print */
  [style*="position:sticky"], [style*="position: sticky"] { display: none !important; }
}