/* ═══════════════════════════════════════════════════════════
   UTFA Certification Campaign — Clean Academic Style
   ═══════════════════════════════════════════════════════════ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --navy: #1E3A5F;
  --navy-light: #2C5282;
  --blue: #2563EB;
  --blue-bg: #DBEAFE;
  --indigo: #6366F1;
  --red: #DC2626;
  --amber: #F59E0B;
  --amber-bg: #FEF3C7;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-500: #6B7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --white: #FFFFFF;
  --max-width: 880px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.7;
  font-size: 17px;
}

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

a:hover {
  color: var(--navy-light);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Navigation ─────────────────────────────────────────── */

#nav {
  position: sticky;
  top: 0;
  background: var(--navy);
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-brand {
  color: var(--white);
  text-decoration: none;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-links a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 4px;
  transition: background 0.15s, color 0.15s;
}

.nav-links a:hover {
  background: rgba(255,255,255,0.12);
  color: var(--white);
}

/* ── Hero ────────────────────────────────────────────────── */

.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--white);
  padding: 80px 0 60px;
  text-align: center;
}

.hero h1 {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  line-height: 1.2;
}

.hero .subtitle {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin: 0 auto 24px;
  line-height: 1.5;
}

.hero .disclaimer {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  font-style: italic;
  max-width: 550px;
  margin: 0 auto;
}

/* ── Key Findings Banner ─────────────────────────────────── */

.key-findings {
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
  padding: 40px 0;
}

.findings-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.finding-card {
  text-align: center;
  padding: 20px 16px;
}

.finding-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.finding-text {
  font-size: 0.92rem;
  color: var(--gray-700);
  line-height: 1.5;
}

/* ── Questions Grid ──────────────────────────────────────── */

.questions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 20px 0 28px;
}

.question-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 20px;
  position: relative;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.question-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 10px;
}

.question-card p {
  font-size: 0.92rem;
  margin-bottom: 0;
}

/* ── Sections ────────────────────────────────────────────── */

.section {
  padding: 64px 0;
}

.section-alt {
  background: var(--gray-50);
}

.section h2 {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.section h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-top: 32px;
  margin-bottom: 12px;
}

.section p {
  margin-bottom: 16px;
  color: var(--gray-700);
}

.section ul {
  margin: 0 0 20px 24px;
  color: var(--gray-700);
}

.section li {
  margin-bottom: 10px;
  line-height: 1.6;
}

/* ── Charts ──────────────────────────────────────────────── */

.chart {
  margin: 32px 0;
}

.chart img {
  width: 100%;
  height: auto;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.chart figcaption {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-top: 10px;
  line-height: 1.5;
  font-style: italic;
}

/* ── Callouts ────────────────────────────────────────────── */

.callout {
  background: var(--blue-bg);
  border-left: 4px solid var(--blue);
  border-radius: 0 8px 8px 0;
  padding: 20px 24px;
  margin: 28px 0;
}

.callout h3 {
  color: var(--navy);
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.callout p {
  color: var(--gray-700);
  margin-bottom: 8px;
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout-warning {
  background: var(--amber-bg);
  border-left-color: var(--amber);
}

.callout-warning h3 {
  color: #92400E;
}

.callout-steelman {
  background: #F0FDF4;
  border-left-color: #22C55E;
}

.callout-steelman h3 {
  color: #166534;
}

/* ── Collapsible Details ────────────────────────────────── */

details {
  margin: 20px 0;
}

details summary {
  cursor: pointer;
  color: var(--navy);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 8px 0;
}

details summary:hover {
  color: var(--blue);
}

details[open] > .callout,
details[open] > .chart {
  margin-top: 12px;
}

/* ── Bottom Line ───────────────────────────────────────── */

.bottom-line {
  text-align: center;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--navy);
  margin: 24px 0 8px;
  line-height: 1.5;
}

/* ── Highlight Note ────────────────────────────────────── */

.highlight-note {
  background: var(--blue-bg);
  border-radius: 8px;
  padding: 16px 20px;
  font-size: 0.95rem;
  color: var(--gray-700);
  line-height: 1.6;
  margin: 24px 0;
}

/* ── Calculator ──────────────────────────────────────────── */

.calculator {
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: 12px;
  padding: 28px 32px;
  margin: 32px 0;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.calculator h3 {
  margin-top: 0;
  margin-bottom: 20px;
  color: var(--navy);
  font-size: 1.2rem;
}

.calc-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.calc-field label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.calc-field input,
.calc-field select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--gray-900);
  background: var(--gray-50);
  transition: border-color 0.15s;
}

.calc-field input:focus,
.calc-field select:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.calc-results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.calc-result {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--gray-50);
  border-radius: 6px;
}

.calc-result.highlight {
  background: var(--amber-bg);
  border: 1px solid var(--amber);
}

.calc-label {
  font-size: 0.88rem;
  color: var(--gray-700);
}

.calc-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--navy);
}

.calc-result.highlight .calc-value {
  color: #92400E;
}

/* ── Protections Grid ────────────────────────────────────── */

.protections-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 28px 0;
}

.protection-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.protection-card h3 {
  margin-top: 0;
  margin-bottom: 8px;
  color: var(--navy);
  font-size: 1.05rem;
}

.protection-card p {
  font-size: 0.92rem;
  margin-bottom: 0;
}

/* ── FAQ ─────────────────────────────────────────────────── */

.faq-item {
  border-bottom: 1px solid var(--gray-200);
  padding: 24px 0;
}

.faq-item:first-of-type {
  padding-top: 0;
}

.faq-item:last-of-type {
  border-bottom: none;
}

.faq-item h3 {
  margin-top: 0;
  margin-bottom: 10px;
  color: var(--navy);
  font-size: 1.1rem;
}

.faq-item p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* ── Footer ──────────────────────────────────────────────── */

.footer {
  background: var(--navy);
  color: rgba(255,255,255,0.75);
  padding: 48px 0;
  font-size: 0.88rem;
  line-height: 1.7;
}

.footer h3 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 12px;
}

.footer p {
  margin-bottom: 12px;
}

.footer a {
  color: rgba(255,255,255,0.9);
}

.footer .disclaimer {
  font-style: italic;
  color: rgba(255,255,255,0.5);
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

/* ── Responsive ──────────────────────────────────────────── */

@media (max-width: 768px) {
  body {
    font-size: 16px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .findings-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .finding-card {
    padding: 16px;
  }

  .finding-number {
    font-size: 1.8rem;
  }

  .calc-inputs {
    grid-template-columns: 1fr;
  }

  .calc-results {
    grid-template-columns: 1fr;
  }

  .questions-grid {
    grid-template-columns: 1fr;
  }

  .protections-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    gap: 0;
  }

  .nav-links a {
    font-size: 12px;
    padding: 6px 8px;
  }

  .section {
    padding: 40px 0;
  }
}

@media (max-width: 480px) {
  .nav-links a {
    font-size: 11px;
    padding: 4px 6px;
  }

  .hero {
    padding: 48px 0 36px;
  }

  .hero h1 {
    font-size: 1.5rem;
  }

  .calculator {
    padding: 20px 16px;
  }
}