/* LinkWork Analysis Studio — Layer C theme */
@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Source+Sans+3:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  --color-ink: #1a2b3c;
  --color-ink-soft: #3d5166;
  --color-paper: #faf8f5;
  --color-paper-warm: #f3efe8;
  --color-accent: #c47d2a;
  --color-accent-light: #e8a849;
  --color-accent-muted: #d4a574;
  --color-line: #d9d2c7;
  --color-line-dark: #b8afa3;
  --color-success: #2d6a4f;
  --color-error: #9b2c2c;
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'Source Sans 3', system-ui, sans-serif;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --shadow-soft: 0 4px 24px rgba(26, 43, 60, 0.08);
  --shadow-card: 0 8px 32px rgba(26, 43, 60, 0.1);
  --max-width: 1200px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 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);
}

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

a {
  color: var(--color-accent);
  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: 400;
  line-height: 1.2;
  margin: 0 0 0.75em;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: 1.375rem; }

p { margin: 0 0 1em; }

ul, ol { margin: 0 0 1em; padding-left: 1.25em; }

address { font-style: normal; }

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

.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: var(--color-paper-warm);
}

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

.section-header p {
  color: var(--color-ink-soft);
  font-size: 1.125rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}

.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;
  text-decoration: none;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: 1.125rem;
}

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

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

.main-nav a {
  text-decoration: none;
  color: var(--color-ink-soft);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color 0.2s;
}

.main-nav a:hover,
.main-nav a.active { 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);
  transition: background 0.2s !important;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  transition: transform 0.3s, opacity 0.3s;
}

/* Footer */
.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 1.25fr;
  gap: 2.5rem;
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(250, 248, 245, 0.15);
}

.footer-brand .logo {
  color: var(--color-paper);
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: rgba(250, 248, 245, 0.7);
}

.footer-col h3 {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-light);
  margin-bottom: 1rem;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 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 p {
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
  color: rgba(250, 248, 245, 0.75);
}

.footer-col address a {
  color: rgba(250, 248, 245, 0.75);
  text-decoration: none;
}

.footer-legal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
  padding: 1.5rem 0;
  font-size: 0.875rem;
  color: rgba(250, 248, 245, 0.5);
}

.footer-legal ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-legal a {
  color: rgba(250, 248, 245, 0.6);
  text-decoration: none;
}

.footer-legal a:hover { color: var(--color-paper); }

/* Buttons */
.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;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--color-ink);
  color: var(--color-paper);
  border-color: var(--color-ink);
}

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

.btn-outline {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-line-dark);
}

.btn-outline:hover {
  border-color: var(--color-ink);
  background: var(--color-paper-warm);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-paper);
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background: var(--color-ink);
  border-color: var(--color-ink);
}

/* Hero variants */
.hero {
  position: relative;
  overflow: hidden;
}

.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 85vh;
  align-items: center;
}

.hero-content {
  padding: 4rem 2rem 4rem max(1rem, calc((100vw - var(--max-width)) / 2 + 1rem));
}

.hero-visual {
  position: relative;
  height: 100%;
  min-height: 500px;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 43, 60, 0.15) 0%, transparent 60%);
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.hero h1 { margin-bottom: 1.25rem; }

.hero-lead {
  font-size: 1.25rem;
  color: var(--color-ink-soft);
  max-width: 520px;
  margin-bottom: 2rem;
}

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

.hero-compact {
  padding: 5rem 0 3rem;
  background: var(--color-paper-warm);
  border-bottom: 1px solid var(--color-line);
}

.hero-compact .container {
  max-width: 720px;
}

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

.card {
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.3s, transform 0.3s;
}

.card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.card-image {
  aspect-ratio: 16/10;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.card:hover .card-image img { transform: scale(1.03); }

.card-body { padding: 1.5rem; }

.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.card h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }

.card p {
  color: var(--color-ink-soft);
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}

.card-link {
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
}

/* Feature strip */
.feature-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding: 3rem 0;
}

.feature-item {
  padding-left: 1.25rem;
  border-left: 3px solid var(--color-accent-light);
}

.feature-item h3 {
  font-size: 1.125rem;
  font-family: var(--font-body);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-item p {
  font-size: 0.9375rem;
  color: var(--color-ink-soft);
  margin: 0;
}

/* Testimonials */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.testimonial {
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.testimonial blockquote {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  line-height: 1.7;
}

.testimonial cite {
  font-style: normal;
  font-size: 0.875rem;
  color: var(--color-ink-soft);
}

.testimonial cite strong {
  display: block;
  color: var(--color-ink);
  font-weight: 600;
}

/* Page hero */
.page-hero {
  padding: 4rem 0 3rem;
  background: linear-gradient(160deg, var(--color-paper-warm) 0%, var(--color-paper) 100%);
  border-bottom: 1px solid var(--color-line);
}

.page-hero h1 { max-width: 700px; }

.page-hero .lead {
  font-size: 1.125rem;
  color: var(--color-ink-soft);
  max-width: 600px;
}

/* Content pages */
.content-page {
  padding: 3rem 0 4rem;
}

.content-page .container {
  max-width: 760px;
}

.content-page h2 {
  margin-top: 2.5rem;
  font-size: 1.5rem;
}

.content-page h3 {
  margin-top: 1.75rem;
  font-size: 1.2rem;
  font-family: var(--font-body);
  font-weight: 600;
}

.legal-page .container { max-width: 800px; }

.legal-page h2 {
  font-size: 1.375rem;
  margin-top: 2.5rem;
}

/* Pricing */
.pricing-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
}

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

.pricing-table th {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  background: var(--color-paper-warm);
}

.pricing-table td:last-child {
  font-weight: 600;
  white-space: nowrap;
}

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

/* Forms */
.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-line-dark);
  border-radius: var(--radius-sm);
  background: var(--color-paper);
  color: var(--color-ink);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea { min-height: 140px; resize: vertical; }

.form-error {
  color: var(--color-error);
  font-size: 0.875rem;
  margin-top: 0.375rem;
  display: none;
}

.form-group.invalid .form-error { display: block; }

.form-group.invalid input,
.form-group.invalid select,
.form-group.invalid textarea {
  border-color: var(--color-error);
}

.form-success {
  background: #e8f5ee;
  border: 1px solid var(--color-success);
  color: var(--color-success);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  display: none;
}

.form-success.visible { display: block; }

.form-error-banner {
  background: #fce8e8;
  border: 1px solid var(--color-error);
  color: var(--color-error);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  display: none;
}

.form-error-banner.visible { display: block; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.contact-info h2 { font-size: 1.5rem; }

.contact-block {
  margin-bottom: 2rem;
}

.contact-block h3 {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

/* Pattern library */
.pattern-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.pattern-card {
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.pattern-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.pattern-card-body { padding: 1.5rem; }

.pattern-card h3 { font-size: 1.2rem; }

.pattern-type {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
}

.pattern-type.reversal { background: #fce8e8; color: #9b2c2c; }
.pattern-type.continuation { background: #e8f0fc; color: #1e4a7a; }
.pattern-type.neutral { background: #f0ebe3; color: var(--color-ink-soft); }

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

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.3s;
}

.blog-card:hover {
  box-shadow: var(--shadow-card);
  color: inherit;
}

.blog-card img {
  aspect-ratio: 16/9;
  object-fit: cover;
}

.blog-card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card .date {
  font-size: 0.8125rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.blog-card h2 {
  font-size: 1.375rem;
  margin-bottom: 0.75rem;
}

.blog-card p {
  color: var(--color-ink-soft);
  font-size: 0.9375rem;
  flex: 1;
}

.article-meta {
  font-size: 0.875rem;
  color: var(--color-ink-soft);
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-line);
}

.article-cover {
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
  aspect-ratio: 21/9;
  object-fit: cover;
  width: 100%;
}

/* Service detail */
.service-detail-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 3rem;
  align-items: start;
}

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

.service-sidebar {
  background: var(--color-paper-warm);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
}

.service-sidebar h3 {
  font-size: 1rem;
  font-family: var(--font-body);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.detail-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
}

.detail-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-line);
  font-size: 0.9375rem;
}

.detail-list li:last-child { border-bottom: none; }

.detail-list strong {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  margin-bottom: 0.125rem;
}

/* 404 */
.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 1rem;
}

.error-page h1 {
  font-size: 6rem;
  color: var(--color-line-dark);
  margin-bottom: 0.25rem;
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 1.25rem 1.5rem;
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.15);
  transform: translateY(100%);
  transition: transform 0.4s ease;
}

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

.cookie-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: min(100%, var(--max-width));
  margin-inline: auto;
  flex-wrap: wrap;
}

.cookie-banner p {
  margin: 0;
  font-size: 0.9375rem;
  flex: 1;
  min-width: 240px;
}

.cookie-banner a { color: var(--color-accent-light); }

.cookie-actions {
  display: flex;
  gap: 0.75rem;
  flex-shrink: 0;
}

.cookie-actions .btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

.cookie-actions .btn-accept {
  background: var(--color-accent);
  color: var(--color-paper);
  border: none;
}

.cookie-actions .btn-reject {
  background: transparent;
  color: var(--color-paper);
  border: 1px solid rgba(250, 248, 245, 0.4);
}

/* Cookies table */
.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;
  text-align: left;
  border: 1px solid var(--color-line);
}

.cookies-table th {
  background: var(--color-paper-warm);
  font-weight: 600;
}

/* Case study */
.case-study {
  background: var(--color-paper-warm);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin: 2.5rem 0;
}

.case-study h3 { margin-top: 0; }

/* Script error */
.script-error {
  background: #fce8e8;
  border: 1px solid var(--color-error);
  color: var(--color-error);
  padding: 1rem;
  border-radius: var(--radius-sm);
  margin: 1rem 0;
  font-size: 0.875rem;
  display: none;
}

.script-error.visible { display: block; }

/* Responsive */
@media (max-width: 960px) {
  .hero-split { grid-template-columns: 1fr; }
  .hero-visual { min-height: 320px; order: -1; }
  .hero-content { padding: 2.5rem 1rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .feature-strip { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .service-detail-grid { grid-template-columns: 1fr; }
  .service-sidebar { position: static; }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-paper);
    border-bottom: 1px solid var(--color-line);
    padding: 1rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s, opacity 0.3s;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .main-nav li { border-bottom: 1px solid var(--color-line); }
  .main-nav a { display: block; padding: 0.875rem 0.5rem; }
  .nav-cta { text-align: center; margin-top: 0.5rem; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-legal { flex-direction: column; text-align: center; }
}