/* ── NPPE Pro Marketing Landings ── */
/* Design tokens matching the app */
:root {
  --primary: #258CF4;
  --primary-dark: #1B6FCC;
  --primary-light: #E8F2FE;
  --blue-700: #1654A0;
  --text-primary: #1A1D26;
  --text-secondary: #6B7280;
  --bg-app: #F7F8FA;
  --bg-surface: #FFFFFF;
  --border-soft: #E5E7EB;
  --emerald: #10B981;
  --amber: #F59E0B;
  --radius: 16px;
  --max-w: 880px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  color: var(--text-primary);
  background: var(--bg-app);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ── */
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ── Header ── */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 20px; font-weight: 800; color: var(--text-primary);
  text-decoration: none;
}
.logo svg { width: 32px; height: 32px; }
.logo span { color: var(--primary); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 12px;
  font-size: 15px; font-weight: 700;
  text-decoration: none; transition: all .2s;
  cursor: pointer; border: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--blue-700));
  color: #fff; box-shadow: 0 4px 14px rgba(37,140,244,.3);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(37,140,244,.4); text-decoration: none; }
.btn-outline {
  background: transparent; color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary-light); text-decoration: none; }
.btn-sm { padding: 8px 18px; font-size: 13px; }

/* ── Hero ── */
.hero {
  padding: 64px 0 48px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 800; line-height: 1.2;
  margin-bottom: 20px;
}
.hero h1 mark {
  background: none; color: var(--primary);
}
.hero .subtitle {
  font-size: 18px; color: var(--text-secondary);
  max-width: 600px; margin: 0 auto 32px;
}

/* ── Section ── */
section { padding: 48px 0; }
section h2 {
  font-size: clamp(22px, 3.5vw, 30px);
  font-weight: 800; margin-bottom: 16px;
}
section p, section li { font-size: 16px; color: var(--text-secondary); }
section p + p { margin-top: 12px; }

/* ── App Mockup Cards ── */
.mockup {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(0,0,0,.06);
  overflow: hidden;
  max-width: 380px;
  margin: 32px auto;
}
.mockup-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  background: linear-gradient(135deg, var(--primary), var(--blue-700));
  color: #fff; font-size: 13px; font-weight: 700;
}
.mockup-body { padding: 20px 16px; }

/* Progress bar mockup */
.progress-bar { height: 8px; border-radius: 99px; background: #E5E7EB; overflow: hidden; margin: 8px 0; }
.progress-bar .fill { height: 100%; border-radius: 99px; background: var(--primary); transition: width .6s; }

/* Stat row */
.stat-row { display: flex; gap: 12px; margin: 12px 0; }
.stat-box {
  flex: 1; text-align: center; padding: 14px 8px;
  border-radius: 12px; background: var(--primary-light);
}
.stat-box .num { font-size: 22px; font-weight: 800; color: var(--primary); }
.stat-box .label { font-size: 11px; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .5px; }

/* Flashcard mockup */
.flash-mockup {
  background: var(--bg-surface); border: 1px solid var(--border-soft);
  border-radius: var(--radius); padding: 32px 20px; text-align: center;
  max-width: 340px; margin: 24px auto;
  box-shadow: 0 4px 24px rgba(0,0,0,.06);
}
.flash-mockup .badge {
  display: inline-block; padding: 3px 10px; border-radius: 99px;
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px;
  background: var(--primary-light); color: var(--primary); margin-bottom: 16px;
}
.flash-mockup .question { font-size: 17px; font-weight: 700; line-height: 1.4; color: var(--text-primary); }
.flash-mockup .tap-hint { margin-top: 20px; font-size: 11px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 1px; }

/* Gauge mockup */
.gauge-row { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin: 24px 0; }
.gauge {
  width: 90px; text-align: center;
}
.gauge-circle {
  width: 72px; height: 72px; border-radius: 50%;
  border: 5px solid #E5E7EB; display: flex; align-items: center; justify-content: center;
  margin: 0 auto 6px; font-size: 18px; font-weight: 800; color: var(--primary);
}
.gauge-circle.strong { border-color: var(--emerald); color: var(--emerald); }
.gauge-circle.weak { border-color: var(--amber); color: var(--amber); }
.gauge .label { font-size: 11px; font-weight: 600; color: var(--text-secondary); }

/* ── Feature Grid ── */
.features {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px; margin: 32px 0;
}
.feature-card {
  background: var(--bg-surface); border: 1px solid var(--border-soft);
  border-radius: var(--radius); padding: 24px;
}
.feature-card .icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--primary-light); color: var(--primary);
  margin-bottom: 14px; font-size: 20px;
}
.feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

/* ── FAQ ── */
.faq-list { max-width: 680px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border-soft); padding: 20px 0;
}
.faq-item summary {
  font-size: 16px; font-weight: 700; cursor: pointer;
  list-style: none; display: flex; align-items: center; justify-content: space-between;
}
.faq-item summary::after { content: '+'; font-size: 22px; color: var(--primary); transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { margin-top: 10px; font-size: 15px; color: var(--text-secondary); line-height: 1.7; }

/* ── CTA Banner ── */
.cta-banner {
  background: linear-gradient(135deg, var(--primary), var(--blue-700));
  border-radius: var(--radius); padding: 48px 32px;
  text-align: center; color: #fff; margin: 48px 0;
}
.cta-banner h2 { color: #fff; margin-bottom: 12px; }
.cta-banner p { color: rgba(255,255,255,.8); margin-bottom: 24px; font-size: 16px; }
.cta-banner .btn { background: #fff; color: var(--primary); font-weight: 700; }
.cta-banner .btn:hover { background: #f0f7ff; }

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 32px 0; text-align: center;
  font-size: 13px; color: var(--text-secondary);
}
.site-footer a { color: var(--primary); font-weight: 600; }
.footer-links { display: flex; justify-content: center; gap: 24px; margin-bottom: 12px; flex-wrap: wrap; }

/* ── Internal Links ── */
.related-links {
  display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0;
}
.related-links a {
  padding: 6px 14px; border-radius: 99px; font-size: 13px; font-weight: 600;
  background: var(--primary-light); color: var(--primary);
}
.related-links a:hover { background: var(--primary); color: #fff; text-decoration: none; }

/* ── Breadcrumb ── */
.breadcrumb { padding: 12px 0; font-size: 13px; color: var(--text-secondary); }
.breadcrumb a { color: var(--primary); font-weight: 600; }

/* ── Two-col layout ── */
.two-col { display: flex; gap: 40px; align-items: center; margin: 32px 0; }
.two-col .col-text { flex: 1; }
.two-col .col-visual { flex: 0 0 340px; }
@media (max-width: 720px) {
  .two-col { flex-direction: column; gap: 24px; }
  .two-col .col-visual { flex: none; width: 100%; max-width: 380px; margin: 0 auto; }
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .hero { padding: 40px 0 32px; }
  section { padding: 32px 0; }
  .cta-banner { padding: 32px 20px; }
}