/* SignalFlow Market Workshop — Layer C theme */
:root {
  --color-ink: #1a2332;
  --color-ink-soft: #3d4a5c;
  --color-paper: #faf8f5;
  --color-paper-warm: #f3efe8;
  --color-accent: #c9a227;
  --color-accent-dark: #a6851f;
  --color-accent-light: #e8d48a;
  --color-border: #ddd6cb;
  --color-success: #2d6a4f;
  --color-error: #9b2226;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(26, 35, 50, 0.08);
  --shadow-md: 0 4px 20px rgba(26, 35, 50, 0.1);
  --shadow-lg: 0 12px 40px rgba(26, 35, 50, 0.12);
  --max-width: 1200px;
  --header-height: 72px;
}

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

html { scroll-behavior: smooth; font-size: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-ink);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a {
  color: var(--color-accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover { color: var(--color-ink); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-ink);
}

h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1rem; }
ul, ol { padding-left: 1.25rem; }
address { font-style: normal; line-height: 1.7; }

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.section { padding: clamp(3rem, 6vw, 5.5rem) 0; }
.section-alt { background: var(--color-paper-warm); }

.section-header {
  max-width: 640px;
  margin-bottom: 2.5rem;
}

.section-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin-bottom: 0.75rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 248, 245, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-ink);
  text-decoration: none;
}

.logo:hover { color: var(--color-ink); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  transition: transform 0.25s, opacity 0.25s;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--color-ink-soft);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
}

.main-nav a:hover { color: var(--color-ink); }

.nav-cta {
  background: var(--color-ink);
  color: var(--color-paper) !important;
  padding: 0.5rem 1.125rem;
  border-radius: var(--radius-sm);
}

.nav-cta:hover {
  background: var(--color-accent-dark) !important;
  color: var(--color-paper) !important;
}

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: var(--color-paper);
    padding: 1.5rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
  }
  .main-nav.is-open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; align-items: flex-start; gap: 0; }
  .main-nav li { width: 100%; }
  .main-nav a {
    display: block;
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--color-border);
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

.site-footer {
  background: var(--color-ink);
  color: rgba(250, 248, 245, 0.85);
  padding: 3.5rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
  padding-bottom: 2.5rem;
}

.footer-brand .logo { color: var(--color-paper); margin-bottom: 1rem; }
.footer-brand p { font-size: 0.9375rem; opacity: 0.8; max-width: 280px; }

.footer-col h3 {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin: 0 0 1rem;
}

.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 0.5rem; }
.footer-col a { color: rgba(250, 248, 245, 0.75); text-decoration: none; font-size: 0.9375rem; }
.footer-col a:hover { color: var(--color-paper); }
.footer-col address a { color: rgba(250, 248, 245, 0.75); text-decoration: none; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid rgba(250, 248, 245, 0.12);
  padding: 1.25rem min(1rem, 2vw);
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
  font-size: 0.875rem;
  opacity: 0.7;
}

.footer-legal { display: flex; gap: 1.5rem; list-style: none; margin: 0; padding: 0; }
.footer-legal a { color: rgba(250, 248, 245, 0.75); text-decoration: none; }

@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.btn-primary { background: var(--color-ink); color: var(--color-paper); border-color: var(--color-ink); }
.btn-primary:hover { background: var(--color-accent-dark); border-color: var(--color-accent-dark); color: var(--color-paper); }
.btn-secondary { background: transparent; color: var(--color-ink); border-color: var(--color-ink); }
.btn-secondary:hover { background: var(--color-ink); color: var(--color-paper); }
.btn-accent { background: var(--color-accent); color: var(--color-ink); border-color: var(--color-accent); }
.btn-accent:hover { background: var(--color-accent-dark); border-color: var(--color-accent-dark); color: var(--color-paper); }

.hero {
  position: relative;
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(4rem, 10vw, 7rem);
  overflow: hidden;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ink-soft);
  margin-bottom: 1.25rem;
}

.hero-eyebrow::before {
  content: "";
  width: 32px;
  height: 2px;
  background: var(--color-accent);
}

.hero h1 { margin: 0 0 1.25rem; letter-spacing: -0.02em; }

.hero-lead {
  font-size: 1.1875rem;
  color: var(--color-ink-soft);
  max-width: 520px;
  margin-bottom: 2rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }

.hero-visual { position: relative; }

.hero-visual img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3;
  object-fit: cover;
  width: 100%;
}

.hero-visual::after {
  content: "";
  position: absolute;
  bottom: -16px;
  right: -16px;
  width: 60%;
  height: 60%;
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-lg);
  z-index: -1;
}

.hero-asymmetric {
  background: linear-gradient(135deg, var(--color-paper-warm) 0%, var(--color-paper) 60%);
}

@media (max-width: 768px) {
  .hero-layout { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.75rem;
}

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.25s;
}

.card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.card-image img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.card-body { padding: 1.5rem; }
.card-body h3 { margin: 0 0 0.5rem; }
.card-body p { font-size: 0.9375rem; color: var(--color-ink-soft); margin-bottom: 1rem; }
.card-link { font-weight: 600; font-size: 0.9375rem; text-decoration: none; color: var(--color-accent-dark); }

.page-hero {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  background: var(--color-paper-warm);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 { margin: 0 0 0.75rem; }
.page-hero p { font-size: 1.125rem; color: var(--color-ink-soft); max-width: 600px; margin: 0; }

.breadcrumb { font-size: 0.875rem; color: var(--color-ink-soft); margin-bottom: 1rem; }
.breadcrumb a { color: var(--color-ink-soft); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-ink); }

.prose { max-width: 720px; }
.prose-wide { max-width: 800px; }
.prose h2 { margin: 2.5rem 0 1rem; }
.prose h3 { margin: 2rem 0 0.75rem; }

.split-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 3rem;
  align-items: start;
}

@media (max-width: 860px) { .split-layout { grid-template-columns: 1fr; } }

.sidebar-box {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
}

.sidebar-box h3 { font-size: 1rem; margin: 0 0 1rem; }
.sidebar-box ul { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.sidebar-box li { padding: 0.5rem 0; border-bottom: 1px solid var(--color-border); font-size: 0.9375rem; }
.price-tag { font-family: var(--font-display); font-size: 1.75rem; font-weight: 600; margin-bottom: 0.25rem; }
.price-note { font-size: 0.875rem; color: var(--color-ink-soft); margin-bottom: 1.25rem; }

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.75rem;
}

.testimonial {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}

.testimonial blockquote { margin: 0 0 1.25rem; font-size: 0.9875rem; line-height: 1.7; color: var(--color-ink-soft); }
.testimonial cite { font-style: normal; font-size: 0.875rem; font-weight: 600; }
.testimonial-role { display: block; font-weight: 400; color: var(--color-ink-soft); font-size: 0.8125rem; margin-top: 0.25rem; }

.case-study {
  background: var(--color-ink);
  color: var(--color-paper);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-top: 3rem;
}

.case-study h2 { color: var(--color-paper); margin-top: 0; }
.case-study p { opacity: 0.9; }

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 2rem;
  counter-reset: step;
}

.process-step { position: relative; padding-top: 3rem; }

.process-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 0;
  left: 0;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent-light);
  line-height: 1;
}

.process-step h3 { margin: 0 0 0.5rem; }
.process-step p { font-size: 0.9375rem; color: var(--color-ink-soft); margin: 0; }

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.pricing-table th, .pricing-table td {
  padding: 1rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.pricing-table th {
  background: var(--color-paper-warm);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pricing-note {
  background: var(--color-paper-warm);
  border-left: 3px solid var(--color-accent);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-top: 2rem;
  font-size: 0.9375rem;
}

.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-weight: 600; font-size: 0.9375rem; margin-bottom: 0.375rem; }

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.2);
}

.form-group textarea { min-height: 140px; resize: vertical; }
.form-error { color: var(--color-error); font-size: 0.8125rem; margin-top: 0.375rem; display: none; }
.form-group.is-invalid input, .form-group.is-invalid select, .form-group.is-invalid textarea { border-color: var(--color-error); }
.form-group.is-invalid .form-error { display: block; }

.form-success, .form-failure {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  display: none;
}

.form-success { background: rgba(45, 106, 79, 0.1); border: 1px solid var(--color-success); color: var(--color-success); }
.form-failure { background: rgba(155, 34, 38, 0.08); border: 1px solid var(--color-error); color: var(--color-error); }
.form-success.is-visible, .form-failure.is-visible { display: block; }

.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 3rem; }
@media (max-width: 768px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-detail { margin-bottom: 1.5rem; }
.contact-detail strong {
  display: block;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-ink-soft);
  margin-bottom: 0.25rem;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 1.25rem;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
  transform: translateY(100%);
  transition: transform 0.35s ease;
}

.cookie-banner.is-visible { transform: translateY(0); }

.cookie-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.cookie-inner p { margin: 0; font-size: 0.9375rem; flex: 1; min-width: 240px; opacity: 0.9; }
.cookie-inner a { color: var(--color-accent-light); }
.cookie-actions { display: flex; gap: 0.75rem; }

.cookie-actions button {
  padding: 0.5rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 2px solid transparent;
}

.cookie-accept { background: var(--color-accent); color: var(--color-ink); border-color: var(--color-accent); }
.cookie-reject { background: transparent; color: var(--color-paper); border-color: rgba(250, 248, 245, 0.4); }

.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1rem;
}

.error-page h1 { font-size: 6rem; color: var(--color-accent-light); margin: 0; line-height: 1; }
.error-page p { font-size: 1.125rem; color: var(--color-ink-soft); margin: 1rem 0 2rem; }

.legal-content { max-width: 760px; padding: 3rem 0 5rem; }
.legal-content h2 { font-size: 1.375rem; margin: 2.5rem 0 1rem; }
.legal-content h3 { font-size: 1.125rem; margin: 1.75rem 0 0.75rem; }

.cookies-table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.9375rem; }
.cookies-table th, .cookies-table td { padding: 0.75rem 1rem; border: 1px solid var(--color-border); text-align: left; }
.cookies-table th { background: var(--color-paper-warm); }

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.blog-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.blog-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.blog-card-content { padding: 1.5rem; }
.blog-meta { font-size: 0.8125rem; color: var(--color-ink-soft); margin-bottom: 0.5rem; }

.article-header { margin-bottom: 2rem; }
.article-header img { width: 100%; max-height: 420px; object-fit: cover; border-radius: var(--radius-md); margin-top: 1.5rem; }
.article-meta { font-size: 0.875rem; color: var(--color-ink-soft); }

.method-diagram {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2.5rem 0;
}

.method-block {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  text-align: center;
}

.method-block h3 { margin: 0 0 0.5rem; font-size: 1.0625rem; }
.method-block p { font-size: 0.875rem; color: var(--color-ink-soft); margin: 0; }

@media (max-width: 640px) { .method-diagram { grid-template-columns: 1fr; } }

.text-center { text-align: center; }
.inline-error {
  background: rgba(155, 34, 38, 0.08);
  border: 1px solid var(--color-error);
  color: var(--color-error);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  margin: 1rem 0;
  display: none;
}

.inline-error.is-visible { display: block; }