/**
 * PostureCore Dynamics - Stylesheet v1.0.0
 * Theme: Architectural Ergonomics & Workplace Health
 * Typography: Outfit (Modern Clean Sans) + Frank Ruhl Libre (Editorial Serif)
 */
@import url('https://fonts.googleapis.com/css2?family=Frank+Ruhl+Libre:wght@400;500;700;800&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  --pc-dark:        #12161F;
  --pc-dark-subtle: #1C2333;
  --pc-blue:        #2563EB;
  --pc-blue-hover:  #1D4ED8;
  --pc-blue-light:  #EFF6FF;
  --pc-amber:       #D97706;
  --pc-amber-light: #FEF3C7;
  --pc-emerald:     #059669;
  --pc-slate-900:   #0F172A;
  --pc-slate-800:   #1E293B;
  --pc-slate-600:   #475569;
  --pc-slate-400:   #94A3B8;
  --pc-slate-200:   #E2E8F0;
  --pc-slate-100:   #F1F5F9;
  --pc-bg:          #FAFBFD;
  --pc-surface:     #FFFFFF;
  
  --font-serif: 'Frank Ruhl Libre', Georgia, serif;
  --font-sans:  'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  
  --shadow-sm: 0 1px 3px rgba(18, 22, 31, 0.04);
  --shadow-card: 0 8px 24px -4px rgba(18, 22, 31, 0.07);
  --shadow-hover: 0 16px 36px -6px rgba(37, 99, 235, 0.15);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--pc-bg);
  color: var(--pc-slate-800);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* Reading Progress Bar */
#reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--pc-blue), var(--pc-emerald));
  width: 0%;
  z-index: 1200;
  transition: width 0.1s ease;
}

/* REDESIGNED HEADER: Dual-Row Masthead Navigation */
.masthead-header {
  background-color: var(--pc-surface);
  border-bottom: 1px solid var(--pc-slate-200);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}
.masthead-top-row {
  max-width: 1300px;
  margin: 0 auto;
  padding: 14px 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #F1F5F9;
}
.masthead-meta-left {
  font-size: 0.76rem;
  color: var(--pc-slate-600);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
}
.masthead-meta-left span {
  color: var(--pc-blue);
  font-weight: 700;
}
.masthead-brand-center {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.masthead-brand-name {
  font-family: var(--font-serif);
  font-size: 1.95rem;
  font-weight: 800;
  color: var(--pc-dark);
  letter-spacing: -0.02em;
  line-height: 1;
}
.masthead-brand-name span {
  color: var(--pc-blue);
}
.masthead-brand-tag {
  font-size: 0.58rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--pc-slate-400);
  font-weight: 700;
  margin-top: 3px;
}
.masthead-meta-right {
  font-size: 0.78rem;
  color: var(--pc-slate-600);
}
.masthead-meta-right a {
  color: var(--pc-blue);
  text-decoration: none;
  font-weight: 600;
}

.masthead-nav-row {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 36px;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 48px;
  gap: 8px;
}
.mast-nav-link {
  color: var(--pc-slate-600);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}
.mast-nav-link:hover, .mast-nav-link.is-active {
  color: var(--pc-blue);
  background-color: var(--pc-blue-light);
}

/* Breadcrumb */
.pc-breadcrumb {
  background-color: #F8FAFC;
  border-bottom: 1px solid var(--pc-slate-200);
  padding: 10px 0;
}
.bc-content {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 36px;
  font-size: 0.78rem;
  color: var(--pc-slate-600);
  display: flex;
  align-items: center;
  gap: 8px;
}
.bc-content a {
  color: var(--pc-blue);
  text-decoration: none;
}

/* Hero Section: Asymmetric Ergonomic Lab */
.ergo-hero {
  background-color: var(--pc-surface);
  border-bottom: 1px solid var(--pc-slate-200);
  padding: 64px 0;
}
.ergo-hero-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 36px;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 52px;
  align-items: center;
}
.ergo-kicker {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--pc-blue);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.ergo-kicker::before {
  content: '';
  width: 16px;
  height: 2px;
  background-color: var(--pc-blue);
}
.ergo-h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.3rem, 4vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--pc-dark);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.ergo-h1 em {
  color: var(--pc-blue);
  font-style: normal;
}
.ergo-lead {
  font-size: 1.05rem;
  color: var(--pc-slate-600);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 580px;
}
.ergo-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn-ergo-primary {
  background-color: var(--pc-blue);
  color: #FFFFFF;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.28);
  transition: all 0.2s ease;
}
.btn-ergo-primary:hover {
  background-color: var(--pc-blue-hover);
  transform: translateY(-2px);
}
.btn-ergo-outline {
  background-color: transparent;
  color: var(--pc-dark);
  border: 1.5px solid var(--pc-slate-200);
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s ease;
}
.btn-ergo-outline:hover {
  background-color: #F8FAFC;
  border-color: var(--pc-dark);
}

/* Ergonomic Telemetry Card in Hero */
.ergo-telemetry-box {
  background: linear-gradient(145deg, #161C28 0%, #0F1420 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 34px;
  color: #FFFFFF;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}
.telem-tag {
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #60A5FA;
  margin-bottom: 8px;
}
.telem-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 16px;
}
.telem-metric-row {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 16px;
}
.telem-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.telem-label {
  font-size: 0.84rem;
  color: var(--pc-slate-400);
}
.telem-value {
  font-family: var(--font-sans);
  font-size: 0.96rem;
  font-weight: 800;
  color: #60A5FA;
}

/* Ergonomic Article Grid */
.grid-section {
  padding: 72px 0;
}
.grid-wrapper {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 36px;
}
.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 36px;
}
.sec-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 2.8vw, 2.3rem);
  color: var(--pc-dark);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.ergo-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.ergo-card {
  background-color: var(--pc-surface);
  border: 1px solid var(--pc-slate-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.ergo-card:hover {
  transform: translateY(-4px);
  border-color: var(--pc-blue);
  box-shadow: var(--shadow-hover);
}
.card-media {
  height: 200px;
  overflow: hidden;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.ergo-card:hover .card-media img {
  transform: scale(1.05);
}
.card-inner-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.card-cat {
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--pc-blue);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.card-h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--pc-dark);
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 10px;
}
.card-desc {
  font-size: 0.86rem;
  color: var(--pc-slate-600);
  line-height: 1.65;
  margin-bottom: 16px;
}
.card-meta-bar {
  display: flex;
  justify-content: space-between;
  font-size: 0.76rem;
  color: var(--pc-slate-400);
  border-top: 1px solid #F1F5F9;
  padding-top: 12px;
}

/* Article Reading Layout */
.article-reading-wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 54px 36px 72px;
}
.art-h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 2.9rem);
  font-weight: 800;
  color: var(--pc-dark);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}
.art-lead-quote {
  font-size: 1.12rem;
  color: var(--pc-slate-600);
  line-height: 1.85;
  border-left: 4px solid var(--pc-blue);
  padding-left: 20px;
  margin-bottom: 32px;
  font-style: italic;
}
.art-img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 36px;
  box-shadow: var(--shadow-card);
}
.art-prose p {
  font-size: 1.02rem;
  line-height: 1.9;
  color: #334155;
  margin-bottom: 24px;
}
.art-prose h2 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--pc-dark);
  margin: 40px 0 16px;
  font-weight: 800;
}
.art-prose h3 {
  font-family: var(--font-sans);
  font-size: 1.22rem;
  color: var(--pc-blue);
  margin: 28px 0 12px;
  font-weight: 700;
}
.art-prose ul, .art-prose ol {
  padding-left: 24px;
  margin-bottom: 24px;
}
.art-prose li {
  font-size: 1rem;
  line-height: 1.8;
  color: #334155;
  margin-bottom: 10px;
}

/* Callouts */
.callout-box {
  background-color: var(--pc-blue-light);
  border-left: 4px solid var(--pc-blue);
  border-radius: var(--radius-sm);
  padding: 22px 24px;
  margin: 32px 0;
}
.callout-title {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--pc-blue-hover);
  margin-bottom: 8px;
}
.callout-box p {
  font-size: 0.92rem !important;
  color: var(--pc-slate-800) !important;
  margin-bottom: 0 !important;
  line-height: 1.7 !important;
}

.warning-box {
  background-color: #FFFBEB;
  border-left: 4px solid #D97706;
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  margin: 32px 0;
}
.warning-label {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  color: #854D0E;
  margin-bottom: 6px;
}
.warning-box p {
  font-size: 0.88rem !important;
  color: #713F12 !important;
  line-height: 1.65 !important;
  margin-bottom: 0 !important;
}

/* REDESIGNED FOOTER: Horizontal Monograph Colophon */
.monograph-footer {
  background-color: var(--pc-dark);
  color: #94A3B8;
  padding: 64px 0 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-wrapper {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 36px;
}
.footer-top-monograph {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 52px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 36px;
}
.footer-brand-h {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: #FFFFFF;
  font-weight: 800;
  margin-bottom: 12px;
}
.footer-brand-h span {
  color: #60A5FA;
}
.footer-mission {
  font-size: 0.92rem;
  line-height: 1.8;
  color: #94A3B8;
  max-width: 600px;
}

.footer-offices-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.office-card {
  background-color: #1A202C;
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 16px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
}
.office-city {
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 4px;
}
.office-address {
  color: #94A3B8;
  line-height: 1.5;
}

/* Dedicated Legal Disclaimer Box in Footer */
.footer-prominent-disclaimer {
  background-color: rgba(217, 119, 6, 0.1);
  border: 1px solid rgba(217, 119, 6, 0.35);
  border-radius: var(--radius-sm);
  padding: 18px 24px;
  margin-bottom: 32px;
}
.disc-h {
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
  color: #FBBF24;
  letter-spacing: 0.12em;
  margin-bottom: 6px;
}
.disc-p {
  font-size: 0.8rem;
  color: #FDE68A;
  line-height: 1.7;
}

.footer-nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.78rem;
}
.footer-tag-links {
  display: flex;
  gap: 20px;
}
.footer-tag-links a {
  color: #94A3B8;
  text-decoration: none;
}
.footer-tag-links a:hover {
  color: #60A5FA;
}

/* Contact Form */
.contact-grid {
  max-width: 1100px;
  margin: 0 auto;
  padding: 64px 36px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 52px;
}
.contact-card {
  background-color: var(--pc-surface);
  border: 1px solid var(--pc-slate-200);
  border-radius: var(--radius-md);
  padding: 36px;
  box-shadow: var(--shadow-card);
}
.form-grp {
  margin-bottom: 18px;
}
.form-lbl {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--pc-dark);
  margin-bottom: 6px;
  display: block;
}
.form-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--pc-slate-200);
  font-size: 0.92rem;
  font-family: inherit;
  color: var(--pc-dark);
  background-color: #F8FAFC;
  outline: none;
  transition: border-color 0.2s ease;
}
.form-input:focus {
  border-color: var(--pc-blue);
  background-color: #FFFFFF;
}
textarea.form-input {
  resize: vertical;
  min-height: 120px;
}
.btn-submit {
  background-color: var(--pc-dark);
  color: #FFFFFF;
  border: none;
  padding: 13px 30px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  width: 100%;
  font-family: inherit;
  transition: background-color 0.2s ease;
}
.btn-submit:hover {
  background-color: var(--pc-blue);
}

@media (max-width: 1024px) {
  .ergo-hero-inner { grid-template-columns: 1fr; }
  .ergo-cards-grid { grid-template-columns: 1fr 1fr; }
  .footer-top-monograph { grid-template-columns: 1fr; }
  .footer-offices-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .masthead-top-row { flex-direction: column; gap: 10px; text-align: center; }
  .masthead-nav-row { flex-wrap: wrap; height: auto; padding: 10px; }
  .ergo-cards-grid { grid-template-columns: 1fr; }
  .footer-offices-grid { grid-template-columns: 1fr; }
  .art-img { height: 240px; }
}