/* ============================================================
   DIBBs Design System
   (CDCgov/dibbs-design-system — USWDS theme overrides)
   Primary = blue-cool (teal) · Secondary = violet-warm
   Headings = Merriweather (serif) · UI/body = Public Sans
   ============================================================ */
:root {
  /* Primary — blue-cool (teal) */
  --primary:         #2e6276;  /* blue-cool-60 */
  --primary-dark:    #224a58;  /* blue-cool-70 */
  --primary-darker:  #14333d;  /* blue-cool-80 — header/footer */
  --primary-light:   #adcfdc;  /* blue-cool-20 */
  --primary-lighter: #dae9ee;  /* blue-cool-10 — summary box bg */
  --primary-lightest:#e7f2f5;  /* blue-cool-5 */

  /* Links — blue-cool-50 */
  --link:        #3a7d95;
  --link-hover:  #224a58;
  --link-active: #14333d;

  /* Secondary — violet-warm (buttons, checked controls) */
  --secondary:        #864381;  /* violet-warm-60 */
  --secondary-light:  #bf9dc3;
  --secondary-lighter:#dccfdd;
  --secondary-dark:   #5c395a;  /* violet-warm-70 */
  --secondary-darker: #382936;  /* violet-warm-80 */

  /* Grays */
  --base-darkest: #1b1b1b;  /* gray-90 */
  --base-darker:  #2e2e2e;  /* gray-80 */
  --base-dark:    #5c5c5c;  /* gray-60 */
  --base:         #757575;  /* gray-50 */
  --base-light:   #919191;  /* gray-40 */
  --base-lighter: #dfe1e2;  /* gray-400 — borders */
  --base-lightest:#f0f0f0;  /* gray-5 */
  --gray-2:       #f9f9f9;
  --bg:           #fbfcfd;  /* app background */

  /* Status */
  --success:       #00a91c;  /* green-cool-40v */
  --success-dark:  #216e1f;  /* green-cool-60v */
  --success-light: #ecf3ec;  /* green-cool-5v */

  --warning:       #ddaa01;  /* yellow-30v */
  --warning-light: #fff5c2;  /* yellow-5v */
  --warning-text:  #947100;  /* yellow-50v */

  --error:       #d54309;  /* destructive primary */
  --error-dark:  #b51d09;  /* destructive dark */
  --error-light: #f8e1d6;

  --info:        #2491ff;  /* blue-40v */
  --info-light:  #e8f5ff;  /* blue-5v */
  --info-border: #a1d3ff;  /* blue-20v */

  --focus: #2491ff;  /* blue-40v */

  --font-sans: "Public Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Merriweather", Georgia, Cambria, "Times New Roman", Times, serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.4;
  color: var(--base-darkest);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); }
a:hover { color: var(--link-hover); }
a:active { color: var(--link-active); }

:focus-visible { outline: 0.25rem solid var(--focus); outline-offset: 0; }
button:focus-visible, .chip:focus-visible, .act-btn:focus-visible, a:focus-visible {
  outline: 0.25rem solid var(--focus); outline-offset: 0;
}

.grid-container { max-width: 64rem; margin: 0 auto; padding: 0 1rem; }
.grid-container--wide { max-width: 87.5rem; margin: 0 auto; padding: 0 1rem; }

/* ── HEADER (dark blue-cool, DIBBs) ───────────────────────── */
.usa-header { background: var(--primary-darker); }
.usa-header__inner { max-width: 64rem; margin: 0 auto; padding: 0 1rem; display: flex; align-items: stretch; justify-content: space-between; flex-wrap: wrap; }
.usa-logo { display: flex; align-items: center; gap: 0.75rem; padding: 0.9rem 0; }
.usa-logo__mark { width: 2.4rem; height: 2.4rem; border-radius: 3px; background: #fff; color: var(--primary-darker); display: grid; place-items: center; font-weight: 700; font-size: 0.92rem; letter-spacing: 0.01em; }
.usa-logo__text { font-style: normal; font-family: var(--font-serif); font-weight: 700; font-size: 1.2rem; color: #fff; line-height: 1.1; }
.usa-logo__sub { display: block; font-family: var(--font-sans); font-size: 0.75rem; font-weight: 400; color: var(--primary-light); letter-spacing: 0.02em; margin-top: 2px; }
.usa-nav { display: flex; align-items: stretch; }
.usa-nav__primary { display: flex; list-style: none; height: 100%; }
.nav-link {
  font-family: inherit; background: none; border: 0; cursor: pointer;
  display: flex; align-items: center; height: 100%; padding: 0 1.25rem;
  font-size: 1rem; font-weight: 600; color: #dfe9ed;
  border-bottom: 4px solid transparent; transition: background 0.12s, color 0.12s;
}
.nav-link:hover { background: rgba(255,255,255,0.08); color: #fff; }
.nav-link.active { color: #fff; border-bottom-color: var(--primary-light); }

/* ── PAGE / INTRO ─────────────────────────────────────────── */
.page { display: none; }
.page.active { display: block; }
.page-intro { background: #fff; border-bottom: 1px solid var(--base-lighter); padding: 2.5rem 0 2rem; }
.kicker { font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; color: var(--primary); margin-bottom: 0.6rem; }
.page-intro h1 { font-family: var(--font-serif); font-size: 2.1rem; line-height: 1.2; font-weight: 700; color: var(--base-darkest); letter-spacing: -0.005em; }
.page-intro .lead { margin-top: 0.9rem; font-size: 1.2rem; line-height: 1.5; color: var(--base-dark); max-width: 44rem; text-wrap: pretty; }
.page-intro .intro-text { margin-top: 1rem; font-size: 1.06rem; line-height: 1.6; color: var(--base-dark); max-width: 44rem; text-wrap: pretty; }

main { padding-bottom: 3.5rem; }

/* ── HOW IT WORKS ─────────────────────────────────────────── */
.how-it-works { padding: 2.5rem 0 0; }
.hiw-title { font-family: var(--font-serif); font-size: 1.4rem; font-weight: 700; color: var(--base-darkest); margin-bottom: 1.25rem; }
.hiw-steps { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.hiw-step { display: flex; gap: 0.75rem; align-items: flex-start; background: #fff; border: 1px solid var(--base-lighter); border-radius: 0.25rem; padding: 1.25rem; }
.hiw-num { flex: none; width: 2rem; height: 2rem; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: 0.95rem; background: var(--primary); color: #fff; }
.hiw-step h3 { font-size: 1.06rem; font-weight: 700; color: var(--base-darkest); margin-bottom: 0.25rem; line-height: 1.3; }
.hiw-step p { font-size: 0.95rem; color: var(--base-dark); line-height: 1.45; }
@media (max-width: 48rem) { .hiw-steps { grid-template-columns: 1fr; } }

/* ── FORM PRIMITIVES ──────────────────────────────────────── */
.form-section { margin-top: 2rem; }
.section-label { display: block; font-size: 1.06rem; font-weight: 700; color: var(--base-darkest); margin-bottom: 0.5rem; }
.section-label .hint { display: block; font-weight: 400; font-size: 0.9rem; color: var(--base); margin-top: 1px; }

.usa-input, .usa-textarea {
  font-family: inherit; font-size: 1.06rem; color: var(--base-darkest);
  border: 1px solid var(--base-dark); border-radius: 0; background: #fff;
  width: 100%; max-width: 30rem; padding: 0.5rem; line-height: 1.3;
}
.usa-input { height: 2.5rem; }
.usa-input:focus, .usa-textarea:focus { outline: 0.25rem solid var(--focus); outline-offset: 0; }
.usa-input::placeholder, .usa-textarea::placeholder { color: var(--base); }

/* USWDS radio — DIBBs checked state = violet-warm */
.radio-row { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.usa-radio { position: relative; }
.usa-radio__input { position: absolute; left: -999rem; }
.usa-radio__label { display: inline-flex; align-items: baseline; gap: 0.5rem; cursor: pointer; padding-left: 2rem; position: relative; min-height: 1.5rem; font-size: 1.06rem; line-height: 1.4; }
.usa-radio__label::before {
  content: ""; position: absolute; left: 0; top: 0.05rem; width: 1.25rem; height: 1.25rem;
  background: #fff; border-radius: 50%; box-shadow: 0 0 0 2px var(--base-darkest);
}
.usa-radio__input:checked + .usa-radio__label::before {
  background: var(--secondary); box-shadow: 0 0 0 2px var(--secondary), inset 0 0 0 0.18rem #fff;
}
.usa-radio__input:focus + .usa-radio__label::before { outline: 0.25rem solid var(--focus); outline-offset: 0.18rem; }
.radio-hint { color: var(--base); font-size: 0.95rem; }

/* Type buttons (segmented mode selector) — teal */
.btn-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.type-btn {
  font-family: inherit; padding: 0.6rem 1.1rem; border-radius: 0.25rem; cursor: pointer; white-space: nowrap;
  font-size: 1rem; font-weight: 600; color: var(--primary); background: #fff;
  border: 0; box-shadow: inset 0 0 0 2px var(--primary); transition: all 0.12s;
}
.type-btn:hover { box-shadow: inset 0 0 0 2px var(--primary-dark); color: var(--primary-dark); background: var(--primary-lightest); }
.type-btn.active { background: var(--primary); color: #fff; box-shadow: inset 0 0 0 2px var(--primary); }
.type-btn.coming-soon { color: var(--base-light); box-shadow: inset 0 0 0 2px var(--base-lighter); cursor: not-allowed; }
.type-btn.coming-soon:hover { color: var(--base-light); box-shadow: inset 0 0 0 2px var(--base-lighter); background: #fff; }
.coming-soon-tag { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; margin-left: 0.5rem; background: var(--base-lightest); color: var(--base); padding: 0.1rem 0.4rem; border-radius: 2px; vertical-align: middle; }

/* USWDS buttons — DIBBs primary action = violet-warm */
.usa-button {
  font-family: inherit; font-size: 1.06rem; font-weight: 700; line-height: 1.1;
  color: #fff; background: var(--secondary); border: 0; border-radius: 0.25rem;
  box-shadow: inset 0 0 0 2px var(--secondary);
  padding: 0.75rem 1.25rem; cursor: pointer; transition: background 0.12s, box-shadow 0.12s; display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
}
.usa-button:hover { background: var(--secondary-dark); box-shadow: inset 0 0 0 2px var(--secondary-dark); }
.usa-button:active { background: var(--secondary-darker); box-shadow: inset 0 0 0 2px var(--secondary-darker); }
.usa-button:disabled { background: var(--base-lighter); box-shadow: none; color: var(--base); cursor: not-allowed; }
.usa-button--big { font-size: 1.18rem; padding: 1rem 1.5rem; }
.usa-button--block { width: 100%; }

/* ── DEMO PAGE ────────────────────────────────────────────── */
.demo-body { max-width: 42rem; }
.chip-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip {
  font-family: inherit; padding: 0.5rem 1rem; border-radius: 999px; cursor: pointer;
  font-size: 0.95rem; font-weight: 600; color: var(--primary); background: #fff;
  border: 0; box-shadow: inset 0 0 0 1.5px var(--primary); transition: all 0.12s;
}
.chip:hover { background: var(--primary-lightest); }
.chip.selected { background: var(--primary); color: #fff; box-shadow: inset 0 0 0 1.5px var(--primary); }
.run-row { margin-top: 0.75rem; }

.divider { height: 1px; background: var(--base-lighter); margin: 2.5rem 0; }

/* Result → DIBBs summary box (primary-lighter bg, primary-light border) */
.result-card { display: none; border: 1px solid var(--primary-light); border-radius: 0.25rem; background: var(--primary-lighter); overflow: hidden; }
.result-card.visible { display: block; }
.result-header { padding: 1.1rem 1.25rem; border-bottom: 1px solid var(--primary-light); }
.result-header-label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: var(--primary-dark); margin-bottom: 0.25rem; }
.result-header-value { font-size: 1.25rem; font-weight: 700; color: var(--base-darkest); }
.result-header-meta { font-size: 0.9rem; color: var(--base-dark); margin-top: 0.25rem; }
.result-body { padding: 1.25rem; display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; background: #fff; }
.result-box { background: var(--base-lightest); border-radius: 0.25rem; padding: 1rem; }
.result-box.full { grid-column: 1 / -1; }
.result-box-label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--base-dark); margin-bottom: 0.4rem; }
.result-box-value { font-size: 1.25rem; font-weight: 700; color: var(--primary-dark); font-variant-numeric: tabular-nums; }
.result-box-text { font-size: 1rem; color: var(--base-darkest); line-height: 1.45; }

/* ── ALERT (USWDS) ────────────────────────────────────────── */
.usa-alert { display: flex; gap: 0.75rem; padding: 1rem 1.25rem; border-left: 0.5rem solid var(--info); background: var(--info-light); font-size: 1rem; line-height: 1.45; }
.usa-alert--info { border-color: var(--info); background: var(--info-light); }
.usa-alert__heading { font-weight: 700; margin-bottom: 0.15rem; }
.usa-alert__icon { flex: none; width: 1.5rem; height: 1.5rem; border-radius: 50%; background: var(--primary-darker); color: #fff; display: grid; place-items: center; font-size: 0.9rem; font-weight: 700; font-style: italic; font-family: Georgia, serif; }

/* ── TESTING PAGE ─────────────────────────────────────────── */
.testing-body { padding-top: 0.5rem; }

/* Step indicator — current = teal, complete = teal-dark */
.usa-step-indicator { margin: 0 0 2rem; }
.usa-step-indicator__segments { display: flex; gap: 0; list-style: none; }
.usa-step-indicator__segment { flex: 1; position: relative; padding-top: 1.25rem; text-align: left; }
.usa-step-indicator__segment::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 0.5rem; background: var(--base-lighter); border-right: 2px solid #fff;
}
.usa-step-indicator__segment--complete::before { background: var(--primary-dark); }
.usa-step-indicator__segment--current::before { background: var(--primary); }
.usa-step-indicator__label { display: flex; align-items: center; gap: 0.5rem; font-size: 0.95rem; color: var(--base-dark); font-weight: 600; }
.usa-step-indicator__counter { width: 1.6rem; height: 1.6rem; border-radius: 50%; flex: none; display: grid; place-items: center; font-size: 0.85rem; font-weight: 700; background: #fff; color: var(--base); box-shadow: inset 0 0 0 2px var(--base-light); }
.usa-step-indicator__segment--complete .usa-step-indicator__label { color: var(--base-darker); }
.usa-step-indicator__segment--complete .usa-step-indicator__counter { background: var(--primary-dark); color: #fff; box-shadow: none; }
.usa-step-indicator__segment--current .usa-step-indicator__label { color: var(--primary); }
.usa-step-indicator__segment--current .usa-step-indicator__counter { background: var(--primary); color: #fff; box-shadow: none; }

.upload-card { background: #fff; border: 1px solid var(--base-lighter); border-radius: 0.25rem; padding: 2rem; }
.upload-card h2 { font-size: 1.5rem; font-weight: 700; color: var(--base-darkest); margin-bottom: 0.4rem; }
.upload-card > .card-lead { font-size: 1.02rem; color: var(--base-dark); margin-bottom: 1.5rem; line-height: 1.5; max-width: 40rem; }
.upload-card input[type=file] { position: absolute; left: -999rem; }
.name-input { max-width: 22rem; }

/* USWDS file input */
.usa-file-input { max-width: 30rem; border: 1px dashed var(--base-light); border-radius: 0; background: var(--gray-2); }
.file-drop { display: flex; flex-direction: column; align-items: center; gap: 0.6rem; padding: 1.5rem; text-align: center; }
.file-drop__hint { font-size: 0.95rem; color: var(--base-dark); }
.upload-btn {
  font-family: inherit; display: inline-block; padding: 0.6rem 1.25rem; cursor: pointer;
  font-size: 1rem; font-weight: 700; color: var(--secondary); background: #fff; border-radius: 0.25rem; box-shadow: inset 0 0 0 2px var(--secondary); transition: all 0.12s;
}
.upload-btn:hover { background: #fff; box-shadow: inset 0 0 0 2px var(--secondary-dark); color: var(--secondary-dark); }
.upload-filename { font-size: 0.95rem; color: var(--base-dark); }
.upload-hint { font-size: 0.85rem; color: var(--base); margin-top: 0.5rem; }

/* Tables (USWDS) */
.preview-card, .validation-card { background: #fff; border: 1px solid var(--base-lighter); border-radius: 0.25rem; overflow: auto; }
.preview-card { display: none; margin-top: 1.5rem; }
.preview-card.visible { display: block; }
.preview-header { background: var(--base-lightest); border-bottom: 1px solid var(--base-lighter); padding: 0.9rem 1.25rem; display: flex; align-items: center; justify-content: space-between; }
.preview-header h3 { font-size: 1.05rem; font-weight: 700; color: var(--base-darkest); }
.preview-header span { font-size: 0.9rem; color: var(--base-dark); }
.usa-table { width: 100%; border-collapse: collapse; font-size: 0.98rem; }
.usa-table th { background: var(--base-lightest); padding: 0.6rem 1rem; text-align: left; font-size: 0.85rem; font-weight: 700; color: var(--base-darker); border-bottom: 2px solid var(--base-light); white-space: nowrap; }
.usa-table td { padding: 0.65rem 1rem; border-bottom: 1px solid var(--base-lighter); vertical-align: top; line-height: 1.4; }
.usa-table tr:last-child td { border-bottom: none; }
.usa-table tbody tr.reviewed { background: var(--gray-2); }
.num-cell { color: var(--base); font-variant-numeric: tabular-nums; }

.card-pad { padding: 1.25rem; }

/* Progress */
.progress-bar-wrap { background: #fff; border: 1px solid var(--base-lighter); border-radius: 0.25rem; padding: 1.1rem 1.25rem; margin-bottom: 1.5rem; }
.progress-top { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 0.75rem; flex-wrap: wrap; }
.progress-label { font-size: 1.05rem; font-weight: 700; color: var(--base-darkest); }
.progress-meta { font-size: 0.9rem; color: var(--base-dark); margin-left: 0.75rem; }
.progress-counts { display: flex; gap: 1.1rem; font-size: 0.9rem; color: var(--base-darker); flex-wrap: wrap; }
.progress-counts span { display: inline-flex; align-items: center; gap: 0.35rem; }
.dot { width: 0.6rem; height: 0.6rem; border-radius: 50%; display: inline-block; }
.dot-correct { background: var(--success); }
.dot-incorrect { background: var(--error); }
.dot-uncertain { background: var(--warning); }
.dot-pending { background: var(--base-light); }
.progress-track { height: 0.6rem; background: var(--base-lightest); border-radius: 999px; overflow: hidden; display: flex; }
.progress-fill-correct { background: var(--success); height: 100%; transition: width 0.3s; }
.progress-fill-incorrect { background: var(--error); height: 100%; transition: width 0.3s; }
.progress-fill-uncertain { background: var(--warning); height: 100%; transition: width 0.3s; }

/* Validation table cells */
.code-val { font-weight: 700; color: var(--primary-dark); font-variant-numeric: tabular-nums; }
.code-sub { font-size: 0.8rem; color: var(--base); margin-top: 2px; }
.action-group { display: flex; gap: 0.4rem; white-space: nowrap; }
.act-btn {
  font-family: inherit; padding: 0.4rem 0.75rem; border-radius: 0.25rem; cursor: pointer;
  font-size: 0.85rem; font-weight: 700; background: #fff; border: 0; box-shadow: inset 0 0 0 2px transparent; transition: all 0.12s;
}
.act-correct { color: var(--success-dark); box-shadow: inset 0 0 0 2px var(--success-dark); }
.act-correct:hover, .act-correct.selected { background: var(--success-dark); color: #fff; }
.act-incorrect { color: var(--error-dark); box-shadow: inset 0 0 0 2px var(--error-dark); }
.act-incorrect:hover, .act-incorrect.selected { background: var(--error-dark); color: #fff; }
.act-uncertain { color: var(--warning-text); box-shadow: inset 0 0 0 2px var(--warning); }
.act-uncertain:hover, .act-uncertain.selected { background: var(--warning); color: var(--base-darkest); }
.sub-input { margin-top: 0.5rem; width: 100%; padding: 0.4rem 0.5rem; font-size: 0.85rem; border-radius: 0; outline: none; display: none; font-family: inherit; }
.sub-input.visible { display: block; }
.sub-input-incorrect { border: 1px solid var(--error-dark); }
.sub-input-uncertain { border: 1px solid var(--warning-text); }
.sub-input:focus { outline: 0.25rem solid var(--focus); outline-offset: 0; }
.notes-input { width: 100%; padding: 0.4rem 0.5rem; font-size: 0.85rem; border: 1px solid var(--base-light); border-radius: 0; outline: none; resize: vertical; color: var(--base-darkest); font-family: inherit; }
.notes-input:focus { outline: 0.25rem solid var(--focus); outline-offset: 0; }

/* USWDS tag (status) */
.status-badge { display: inline-block; padding: 0.15rem 0.55rem; border-radius: 2px; font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; white-space: nowrap; }
.badge-correct { background: var(--success-light); color: var(--success-dark); }
.badge-incorrect { background: var(--error-light); color: var(--error-dark); }
.badge-uncertain { background: var(--warning-light); color: var(--warning-text); }
.badge-pending { background: var(--base-lightest); color: var(--base); }

.export-bar { background: #fff; border: 1px solid var(--base-lighter); border-radius: 0.25rem; padding: 1.1rem 1.25rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 1.5rem; flex-wrap: wrap; }
.export-bar p { font-size: 1rem; color: var(--base-dark); }

/* ── AGENCY FOOTER (dark blue-cool, DIBBs) ────────────────── */
.agency-footer { background: var(--primary-darker); color: #fff; padding: 2rem 0; }
.agency-footer__inner { max-width: 64rem; margin: 0 auto; padding: 0 1rem; display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; justify-content: space-between; }
.agency-footer__brand { display: flex; align-items: center; gap: 0.75rem; }
.agency-footer__mark { width: 2.5rem; height: 2.5rem; border-radius: 3px; background: #fff; color: var(--primary-darker); display: grid; place-items: center; font-weight: 700; }
.agency-footer__brand strong { font-family: var(--font-serif); font-size: 1.05rem; display: block; }
.agency-footer__brand span { font-family: var(--font-sans); font-size: 0.85rem; color: var(--primary-light); }
.agency-footer__links { display: flex; gap: 1.25rem; flex-wrap: wrap; font-size: 0.9rem; }
.agency-footer__links a { color: #fff; text-decoration: none; }
.agency-footer__links a:hover { color: #fff; text-decoration: underline; }

@media (max-width: 48rem) {
  .result-body { grid-template-columns: 1fr; }
  .page-intro h1 { font-size: 1.75rem; }
  .usa-nav__primary { width: 100%; }
  .nav-link { flex: 1; justify-content: center; padding: 0.85rem 0.5rem; }
}