/* ============================================================
   ProofSignal — Static Website Stylesheet
   Navy: #151D2E | Signal Orange: #FD7E16 | Blue: #1D77CB
   Font: Inter (Google Fonts)
   ============================================================ */

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

:root {
  --navy: #151D2E;
  --navy-light: #1B2740;
  --navy-lighter: #1E3050;
  --orange: #FD7E16;
  --orange-hover: #e96f08;
  --blue: #1D77CB;
  --blue-dark: #094182;
  --white: #FDFEFE;
  --muted: #8A9BB0;
  --muted-light: #B0C0D0;
  --card: rgba(255,255,255,.05);
  --border: rgba(255,255,255,.10);
  --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--navy);
  color: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--orange); text-decoration: none; }
a:hover { color: var(--orange-hover); }
ul { list-style: none; }

/* ---- Layout ---- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; }
.section--alt { background: var(--navy-light); }
.section--white { background: var(--white); color: var(--navy); }

.section-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--muted-light);
  max-width: 580px;
  line-height: 1.7;
}

.section-sub.dark { color: var(--muted); }

.section-header { margin-bottom: 48px; }

/* ---- Navigation ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(21,29,46,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--white);
  text-decoration: none;
}
.nav-logo img { height: 32px; width: auto; }
.nav-logo span { color: var(--orange); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--muted-light);
  transition: color .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }

.nav-cta {
  background: var(--orange);
  color: var(--navy) !important;
  font-weight: 600 !important;
  padding: 8px 18px;
  border-radius: 6px;
  transition: background .2s !important;
}
.nav-cta:hover { background: var(--orange-hover); color: var(--navy) !important; }

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle svg { fill: var(--white); }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--navy);
    border-bottom: 1px solid var(--border);
    padding: 20px 24px;
    gap: 16px;
  }
  .nav-toggle { display: block; }
}

/* ---- Hero ---- */
.hero {
  padding: 24px 0 18px;
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-light) 100%);
  text-align: center;
}

.hero-eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--orange);
  border: 1px solid rgba(253,126,22,.35);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.75rem);
  font-weight: 800;
  line-height: 1.1;
  max-width: 800px;
  margin: 0 auto 24px;
}

.hero h1 .highlight { color: var(--orange); }

.hero-sub {
  font-size: 1.15rem;
  color: var(--muted-light);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-cta {
  background: var(--orange);
  color: var(--navy);
  font-weight: 700;
  font-size: .95rem;
  padding: 13px 28px;
  border-radius: 8px;
  transition: background .2s;
  display: inline-block;
}
.hero-cta:hover { background: var(--orange-hover); color: var(--navy); }

.hero-cta--secondary {
  background: transparent;
  color: var(--white);
  font-weight: 600;
  font-size: .95rem;
  padding: 13px 28px;
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: border-color .2s, color .2s;
}
.hero-cta--secondary:hover { border-color: var(--orange); color: var(--orange); }

/* ---- Stats Bar ---- */
.stats-bar {
  background: var(--navy-lighter);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.stat { text-align: center; }

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--orange);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: .85rem;
  color: var(--muted-light);
  line-height: 1.4;
}

@media (max-width: 600px) {
  .stats-grid { grid-template-columns: 1fr; gap: 16px; }
  .stat { display: flex; align-items: center; gap: 16px; text-align: left; }
  .stat-number { font-size: 1.8rem; margin-bottom: 0; }
}

/* ---- Problem (Three Gaps) ---- */
.gaps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.gap-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}

.gap-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--white);
}

.gap-card p {
  font-size: .9rem;
  color: var(--muted-light);
  line-height: 1.65;
}

/* ---- Services ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  display: flex;
  flex-direction: column;
}

.service-card .icon {
  width: 44px;
  height: 44px;
  background: rgba(253,126,22,.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.3rem;
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.service-card p {
  font-size: .9rem;
  color: var(--muted-light);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 20px;
}

.service-card .price {
  font-size: .85rem;
  color: var(--orange);
  font-weight: 600;
  margin-bottom: 16px;
}

.btn-sm {
  display: inline-block;
  background: var(--orange);
  color: var(--navy);
  font-weight: 600;
  font-size: .85rem;
  padding: 9px 20px;
  border-radius: 6px;
  transition: background .2s;
  text-align: center;
}
.btn-sm:hover { background: var(--orange-hover); color: var(--navy); }

/* ---- How It Works ---- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.step { text-align: center; padding: 8px; }

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(253,126,22,.15);
  border: 1px solid rgba(253,126,22,.3);
  color: var(--orange);
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.step h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step p {
  font-size: .875rem;
  color: var(--muted-light);
  line-height: 1.6;
}

/* ---- Testimonial / Quote ---- */
.quote-block {
  background: var(--navy-lighter);
  border-left: 4px solid var(--orange);
  border-radius: 0 12px 12px 0;
  padding: 32px 36px;
  margin: 40px 0;
}

.quote-block blockquote {
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.65;
  color: var(--white);
  margin-bottom: 12px;
  font-style: normal;
}

.quote-block cite {
  font-size: .85rem;
  color: var(--muted-light);
  font-style: normal;
}

/* ---- CTA Band ---- */
.cta-band {
  background: linear-gradient(135deg, var(--orange) 0%, #e96f08 100%);
  padding: 64px 0;
  text-align: center;
}

.cta-band h2 {
  font-size: clamp(1.6rem, 4vw, 2.25rem);
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 12px;
}

.cta-band p {
  font-size: 1rem;
  color: rgba(21,29,46,.7);
  margin-bottom: 28px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.btn-dark {
  display: inline-block;
  background: var(--navy);
  color: var(--white);
  font-weight: 700;
  font-size: .95rem;
  padding: 14px 32px;
  border-radius: 8px;
  transition: background .2s;
}
.btn-dark:hover { background: var(--navy-light); color: var(--white); }

/* ---- White Section Content ---- */
.section--white .section-title { color: var(--navy); }
.section--white .section-sub { color: var(--muted); }

/* ---- About Page ---- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-text h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--white);
}

.about-text p {
  font-size: .95rem;
  color: var(--muted-light);
  line-height: 1.75;
  margin-bottom: 16px;
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 24px;
}

.value-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.value-item .check {
  color: var(--orange);
  font-weight: 700;
  font-size: 1.1rem;
  margin-top: 1px;
  flex-shrink: 0;
}

.value-item p {
  font-size: .9rem;
  color: var(--muted-light);
  margin: 0;
}

@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ---- Post header (news-article style) ---- */
.post-header {
  padding: 20px 0 0;
  background: var(--navy);
  text-align: left;
}

.post-header .hero-eyebrow {
  display: block;
  margin-bottom: 10px;
}

.post-header h1 {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 12px;
  max-width: 820px;
}

.post-header .hero-sub {
  font-size: .95rem;
  color: var(--muted-light);
  max-width: 720px;
  line-height: 1.7;
  margin: 0 0 16px;
  text-align: left;
}

.post-header + .section {
  padding-top: 28px;
}

/* ---- Blog ---- */
.blog-featured {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 24px;
  margin-bottom: 48px;
  align-items: start;
}

.blog-featured-main {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-top: 3px solid var(--orange);
  border-radius: 12px;
  padding: 32px;
}

.blog-featured-main h2 {
  font-size: 1.4rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--white);
  margin: 8px 0 12px;
}

.blog-featured-main p {
  font-size: .9rem;
  color: var(--muted-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.blog-featured-aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.blog-aside-card {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 22px;
  transition: border-color .15s, background .15s;
}

.blog-aside-card:hover {
  background: var(--navy-lighter);
  border-color: rgba(253,126,22,.35);
}

.blog-aside-label {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.blog-aside-card h3 {
  font-size: .95rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
  margin: 6px 0 8px;
}

.blog-aside-card p {
  font-size: .82rem;
  color: var(--muted-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 10px;
}

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

.blog-card {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-top: 3px solid transparent;
  border-radius: 12px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-top-color .15s, background .15s;
}

.blog-card:hover {
  border-top-color: var(--orange);
  background: var(--navy-lighter);
}

.blog-card h3 {
  font-size: .95rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
}

.blog-card p {
  font-size: .82rem;
  color: var(--muted-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .75rem;
  color: var(--muted);
  margin-bottom: 2px;
}

.tag {
  display: inline-block;
  background: rgba(253,126,22,.15);
  color: var(--orange);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 4px;
}

.tag-howto {
  background: rgba(29,119,203,.15);
  color: #5BA8F0;
}

.read-more {
  color: var(--orange);
  font-size: .82rem;
  font-weight: 600;
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.read-more:hover { color: var(--orange-hover); }

@media (max-width: 900px) {
  .blog-featured { grid-template-columns: 1fr; }
  .blog-featured-aside { flex-direction: row; flex-wrap: wrap; }
  .blog-aside-card { flex: 1 1 260px; }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 580px) {
  .blog-featured-aside { flex-direction: column; }
  .blog-grid { grid-template-columns: 1fr; }
}

/* ---- Strategy Call Page ---- */
.call-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.call-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}

.call-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.call-card p {
  font-size: .875rem;
  color: var(--muted-light);
  margin-bottom: 16px;
  line-height: 1.6;
}

.call-card .call-price {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--orange);
  margin-bottom: 16px;
}

.call-card .call-price span {
  font-size: .8rem;
  font-weight: 400;
  color: var(--muted-light);
}

.call-info {
  background: rgba(253,126,22,.08);
  border: 1px solid rgba(253,126,22,.2);
  border-radius: 10px;
  padding: 24px;
  margin-top: 40px;
}

.call-info h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--white);
}

.call-info p, .call-info li {
  font-size: .875rem;
  color: var(--muted-light);
  line-height: 1.7;
}

.call-info ul {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.call-info li::before {
  content: "✓ ";
  color: var(--orange);
  font-weight: 700;
}

/* ---- Footer ---- */
.footer {
  background: var(--navy);
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: .85rem;
  color: var(--muted);
  line-height: 1.65;
  margin-top: 10px;
  max-width: 260px;
}

.footer-col h4 {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}

.footer-col ul { display: flex; flex-direction: column; gap: 8px; }

.footer-col a {
  font-size: .875rem;
  color: var(--muted-light);
  transition: color .2s;
}
.footer-col a:hover { color: var(--orange); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: .8rem;
  color: var(--muted);
}

.footer-bottom a {
  color: var(--muted);
  font-size: .8rem;
}
.footer-bottom a:hover { color: var(--orange); }

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 60px 0; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 72px 0 56px; }
}

/* ---- Utility ---- */
.text-center { text-align: center; }
.mt-40 { margin-top: 40px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }