/* Kinetic Blueprint — Workplace Ergonomics Design System */

:root {
  --color-ground: #1A1D20;
  --color-surface: #F1F3F5;
  --color-accent: #00F2FE;
  --color-accent-dim: rgba(0, 242, 254, 0.15);
  --color-muted: #8B9299;
  --color-border: rgba(0, 242, 254, 0.25);
  --color-text: #E8EAED;
  --color-text-dark: #1A1D20;
  --color-overlay: rgba(26, 29, 32, 0.82);
  --font-display: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(0, 242, 254, 0.2);
  --transition-fast: 0.3s ease;
  --transition-smooth: 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 72rem;
  --header-height: 4.5rem;
}

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

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

body {
  font-family: var(--font-display);
  background-color: var(--color-ground);
  color: var(--color-text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 4rem 4rem;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul {
  list-style: none;
}

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.35rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); }

p {
  margin-bottom: var(--space-md);
  color: var(--color-muted);
}

p:last-child {
  margin-bottom: 0;
}

/* Blueprint crosshair markers */
.blueprint-edge-mark {
  position: relative;
}

.blueprint-edge-mark::after {
  content: '+';
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  opacity: 0.5;
}

/* Header */
.site-header {
  position: relative;
  z-index: 100;
  padding: var(--space-md) var(--space-lg);
  background: transparent;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  position: relative;
}

.brand-text {
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 2vw, 1rem);
  font-weight: 500;
  color: var(--color-surface);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  flex-shrink: 0;
}

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

.main-nav {
  display: none;
}

.main-nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.main-nav-list a {
  font-size: 0.875rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
}

.main-nav-list a:hover,
.main-nav-list a.is-active {
  color: var(--color-accent);
}

.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  background: var(--color-accent-dim);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-accent);
  font-size: 1.25rem;
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
  flex-shrink: 0;
  order: 99;
}

.menu-toggle:hover {
  background: rgba(0, 242, 254, 0.25);
  box-shadow: var(--shadow-glow);
}

.menu-toggle.is-open {
  background: var(--color-accent);
  color: var(--color-ground);
}

/* Mobile nav panel — separate from header */
.mobile-nav-panel {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(20rem, 85vw);
  height: 100vh;
  background: var(--color-ground);
  border-left: 1px solid var(--color-border);
  z-index: 200;
  padding: var(--space-2xl) var(--space-lg) var(--space-lg);
  transition: right var(--transition-smooth);
  overflow-y: auto;
}

.mobile-nav-panel.is-open {
  right: 0;
}

.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 150;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.mobile-nav-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-nav-list a {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-surface);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
  display: block;
}

.mobile-nav-list a:hover {
  color: var(--color-accent);
}

.mobile-nav-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Main content */
main {
  flex: 1;
  position: relative;
  z-index: 1;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section-block {
  padding: var(--space-xl) 0;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  display: block;
}

.section-heading {
  color: var(--color-surface);
  margin-bottom: var(--space-md);
}

.section-intro {
  max-width: 38rem;
  margin-bottom: var(--space-lg);
}

/* Full-width hero banners */
.hero-banner {
  position: relative;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  min-height: clamp(18rem, 45vh, 28rem);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-banner-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

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

.hero-banner-overlay {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  z-index: 1;
}

.hero-banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  max-width: 42rem;
}

.hero-banner-content h1 {
  color: var(--color-surface);
  margin-bottom: var(--space-md);
}

.hero-banner-content p {
  color: rgba(241, 243, 245, 0.85);
  font-size: clamp(0.9rem, 2vw, 1.05rem);
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
  margin-top: var(--space-lg);
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  background: var(--color-accent);
  color: var(--color-ground);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
  color: var(--color-ground);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  background: transparent;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.btn-outline:hover {
  background: var(--color-accent-dim);
  color: var(--color-accent);
}

/* Grid layouts */
.grid-two {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.grid-three {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.grid-asymmetric {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

/* Cards */
.data-card {
  background: rgba(241, 243, 245, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.data-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow);
}

.data-card-icon {
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.data-card h3 {
  color: var(--color-surface);
  margin-bottom: var(--space-sm);
}

.data-card ul {
  padding-left: var(--space-lg);
  margin-top: var(--space-sm);
}

.data-card ul li {
  list-style: disc;
  color: var(--color-muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-xs);
}

.legal-content h3 {
  color: var(--color-surface);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  font-size: 1rem;
}

.card-metric {
  font-family: var(--font-mono);
  font-size: 2rem;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

/* Image frames */
.frame-compact {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  max-height: 16rem;
}

.frame-compact img {
  width: 100%;
  height: 16rem;
  object-fit: cover;
}

/* Split panel (workspace audit) */
.split-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.split-panel-input {
  background: rgba(241, 243, 245, 0.03);
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.split-panel-output {
  background: rgba(0, 242, 254, 0.04);
  padding: var(--space-lg);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: var(--color-ground);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-surface);
  font-family: var(--font-display);
  font-size: 0.9rem;
  transition: border-color var(--transition-fast);
}

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

.form-group textarea {
  min-height: 8rem;
  resize: vertical;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.checkbox-group input {
  width: auto;
  margin-top: 0.25rem;
  accent-color: var(--color-accent);
}

.checkbox-group label {
  font-size: 0.85rem;
  color: var(--color-muted);
  text-transform: none;
  letter-spacing: normal;
  font-family: var(--font-display);
}

.recommendation-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.recommendation-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(26, 29, 32, 0.5);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--color-muted);
}

.recommendation-item i {
  color: var(--color-accent);
  margin-top: 0.15rem;
  flex-shrink: 0;
}

/* Joint calculator */
.calculator-panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  background: rgba(241, 243, 245, 0.03);
}

.calculator-sliders {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.slider-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.slider-row label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: flex;
  justify-content: space-between;
}

.slider-row input[type="range"] {
  width: 100%;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.angle-display {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.angle-gauge {
  text-align: center;
  padding: var(--space-md);
  background: var(--color-ground);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.angle-gauge-value {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  color: var(--color-accent);
}

.angle-gauge-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  margin-top: var(--space-xs);
}

.angle-gauge.is-warning .angle-gauge-value {
  color: #FFB347;
}

.angle-gauge.is-alert .angle-gauge-value {
  color: #FF6B6B;
}

/* Strain body map */
.body-map-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.body-map-svg {
  width: 100%;
  max-width: 18rem;
  height: auto;
}

.body-zone {
  fill: rgba(241, 243, 245, 0.08);
  stroke: var(--color-border);
  stroke-width: 1;
  cursor: pointer;
  transition: fill var(--transition-fast), stroke var(--transition-fast);
}

.body-zone:hover,
.body-zone.is-selected {
  fill: var(--color-accent-dim);
  stroke: var(--color-accent);
}

.strain-log {
  width: 100%;
  max-width: 24rem;
}

.strain-log-entry {
  padding: var(--space-sm) var(--space-md);
  border-left: 2px solid var(--color-accent);
  margin-bottom: var(--space-sm);
  background: rgba(241, 243, 245, 0.03);
  font-size: 0.875rem;
}

.strain-duration-input {
  margin-top: var(--space-md);
  display: none;
}

.strain-duration-input.is-visible {
  display: block;
}

/* Products */
.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.product-card {
  background: rgba(241, 243, 245, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.product-card-image {
  height: 12rem;
  overflow: hidden;
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-card-body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-body h3 {
  color: var(--color-surface);
  margin-bottom: var(--space-sm);
}

.product-price {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--color-accent);
  margin-top: auto;
  padding-top: var(--space-md);
}

/* Contact */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.contact-info-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.contact-info-item i {
  color: var(--color-accent);
  font-size: 1.1rem;
  margin-top: 0.2rem;
}

.contact-info-item span {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.map-frame {
  width: 100%;
  height: 16rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.map-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* Thank you & 404 */
.status-page {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  min-height: 50vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.status-icon {
  font-size: 3rem;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
}

.status-page h1 {
  color: var(--color-surface);
  margin-bottom: var(--space-md);
}

/* Legal pages */
.legal-content {
  max-width: 48rem;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

.legal-content h1 {
  color: var(--color-surface);
  margin-bottom: var(--space-sm);
}

.legal-content h2 {
  color: var(--color-surface);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  font-size: 1.15rem;
}

.legal-content p,
.legal-content li {
  color: var(--color-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.legal-content ul {
  padding-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

.legal-content ul li {
  list-style: disc;
}

.legal-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg);
  margin-top: var(--space-xl);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  text-align: center;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm) var(--space-lg);
}

.footer-nav a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-muted);
}

.footer-nav a:hover {
  color: var(--color-accent);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm) var(--space-md);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
  width: 100%;
}

.footer-legal a {
  font-size: 0.7rem;
  color: var(--color-muted);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-muted);
}

.footer-contact {
  font-size: 0.75rem;
  color: var(--color-muted);
}

/* Privacy popup */
.consent-popup {
  position: fixed;
  bottom: var(--space-lg);
  left: var(--space-lg);
  right: var(--space-lg);
  max-width: 28rem;
  background: var(--color-surface);
  color: var(--color-text-dark);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-soft);
  z-index: 300;
  transform: translateY(calc(100% + 2rem));
  transition: transform var(--transition-smooth);
}

.consent-popup.is-visible {
  transform: translateY(0);
}

.consent-popup p {
  color: #4A4F55;
  font-size: 0.85rem;
  margin-bottom: var(--space-md);
}

.consent-popup-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.consent-popup .btn-primary {
  font-size: 0.75rem;
  padding: 0.5rem 1rem;
}

.consent-popup .btn-outline {
  color: var(--color-text-dark);
  border-color: #CCC;
  font-size: 0.75rem;
  padding: 0.5rem 1rem;
}

.consent-popup .btn-outline:hover {
  background: #EEE;
  color: var(--color-text-dark);
}

/* Process steps */
.process-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  counter-reset: step-counter;
}

.process-step {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  border-left: 2px solid var(--color-accent);
  background: rgba(241, 243, 245, 0.02);
}

.process-step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  flex-shrink: 0;
}

.process-step h3 {
  color: var(--color-surface);
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.process-step p {
  font-size: 0.875rem;
}

/* Coordinate decoration */
.coord-marker {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-accent);
  opacity: 0.4;
}

.text-center {
  text-align: center;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.mt-lg {
  margin-top: var(--space-lg);
}

/* Responsive */
@media (min-width: 640px) {
  .grid-two {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-three {
    grid-template-columns: repeat(2, 1fr);
  }

  .angle-display {
    grid-template-columns: repeat(4, 1fr);
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .split-panel {
    grid-template-columns: 1fr 1fr;
  }

  .split-panel-input {
    border-bottom: none;
    border-right: 1px solid var(--color-border);
  }

  .grid-asymmetric {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .contact-layout {
    grid-template-columns: 1fr 1.2fr;
  }

  .body-map-container {
    flex-direction: row;
    align-items: flex-start;
    justify-content: center;
  }
}

@media (min-width: 1024px) {
  .main-nav {
    display: block;
    margin-left: auto;
  }

  .menu-toggle {
    display: none;
  }

  .grid-three {
    grid-template-columns: repeat(3, 1fr);
  }

  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .calculator-sliders {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1023px) {
  .menu-toggle {
    display: flex;
  }
}

@media (max-width: 480px) {
  .site-header {
    padding: var(--space-sm) var(--space-md);
  }

  .container {
    padding: 0 var(--space-md);
  }

  .hero-banner-content {
    padding: var(--space-lg) var(--space-md);
  }

  .consent-popup {
    left: var(--space-md);
    right: var(--space-md);
    bottom: var(--space-md);
  }
}