/* ============================================
   Liquid Kinetic - Biodegradable Lubricants
   ============================================ */

:root {
  /* Arctic Tech Palette */
  --color-primary: #010B13;
  --color-secondary: #ADFF2F;
  --color-accent: #00E5FF;
  --color-text: #F0F4F7;
  --color-bg-dark: #010B13;
  --color-bg-glass: rgba(1, 11, 19, 0.7);
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;
  
  /* Typography */
  --font-heading: 'Orbitron', sans-serif;
  --font-body: 'Chakra Petch', sans-serif;
  
  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(173, 255, 47, 0.3);
  --shadow-cyan: 0 0 20px rgba(0, 229, 255, 0.3);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Glass Effect */
  --glass-bg: rgba(1, 11, 19, 0.8);
  --glass-border: rgba(173, 255, 47, 0.2);
  --glass-blur: blur(10px);
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg-dark);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

h1 {
  font-size: clamp(1.7rem, 4vw, 3rem);
}

h2 {
  font-size: clamp(1.35rem, 3vw, 2rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1rem);
}

p {
  margin-bottom: var(--space-md);
  font-size: clamp(1rem, 2vw, 1.125rem);
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

/* ============================================
   Header & Navigation
   ============================================ */

.site-header {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-md) var(--space-lg);
  position: relative;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: clamp(1rem, 2vw, 1.45rem);
  color: var(--color-secondary);
  font-weight: 700;
}

.nav-menu {
  display: flex;
  list-style: none;
  align-items: center;
}

.nav-menu li a {
  color: var(--color-text);
  font-size: clamp(0.875rem, 2vw, 1rem);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
}

.nav-menu li a:hover {
  color: var(--color-accent);
  background: rgba(0, 229, 255, 0.1);
}

.burger-toggle {
  display: none;
  background: transparent;
  border: 2px solid var(--color-secondary);
  color: var(--color-secondary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 1.5rem;
  transition: all var(--transition-base);
  order: 999;
}

.burger-toggle:hover {
  background: var(--color-secondary);
  color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.burger-toggle.active {
  background: var(--color-secondary);
  color: var(--color-primary);
}

/* Mobile Navigation */
@media (max-width: 1023px) {
  .burger-toggle {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-left: 1px solid var(--glass-border);
    flex-direction: column;
    padding: var(--space-xxl) var(--space-lg);
    gap: var(--space-md);
    transition: right var(--transition-base);
    z-index: 999;
    overflow-y: auto;
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .nav-menu li {
    width: 100%;
  }
  
  .nav-menu li a {
    display: block;
    width: 100%;
    padding: var(--space-md);
    border-bottom: 1px solid var(--glass-border);
  }
}

/* ============================================
   Main Content
   ============================================ */

main {
  min-height: calc(100vh - 200px);
  position: relative;
}

/* ============================================
   Hero Banner
   ============================================ */

.hero-section {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xxl) var(--space-lg);
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 1200px;
  width: 100%;
}

.hero-text {
  margin-bottom: var(--space-xl);
}

.hero-text h1 {
  margin-bottom: var(--space-lg);
  text-shadow: 0 0 30px rgba(173, 255, 47, 0.5);
}

.hero-text p {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  max-width: 800px;
  margin: 0 auto;
}

.hero-image {
  margin-top: var(--space-xl);
  width: 100%;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

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

/* ============================================
   Sections
   ============================================ */

.content-section {
  padding: var(--space-xxl) var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-xl);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-secondary), transparent);
  margin: var(--space-md) auto;
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.section-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.section-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(173, 255, 47, 0.1), transparent);
  transition: left var(--transition-slow);
}

.section-card:hover::before {
  left: 100%;
}

.section-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--color-secondary);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}

.card-title {
  color: var(--color-secondary);
  margin-bottom: var(--space-sm);
}

/* ============================================
   Friction HUD (Real-Time Performance Overlay)
   ============================================ */

.friction-hud {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  min-width: 200px;
  z-index: 100;
  box-shadow: var(--shadow-lg), var(--shadow-cyan);
  display: none;
}

.friction-hud.active {
  display: block;
  animation: hudPulse 2s ease-in-out infinite;
}

@keyframes hudPulse {
  0%, 100% {
    box-shadow: var(--shadow-lg), var(--shadow-cyan);
  }
  50% {
    box-shadow: var(--shadow-lg), 0 0 30px rgba(0, 229, 255, 0.6);
  }
}

.hud-title {
  font-size: 0.875rem;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

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

.hud-metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  padding: var(--space-xs) 0;
  border-bottom: 1px solid rgba(173, 255, 47, 0.1);
}

.hud-metric:last-child {
  border-bottom: none;
}

.hud-label {
  color: var(--color-text);
  opacity: 0.8;
}

.hud-value {
  color: var(--color-secondary);
  font-weight: 700;
  font-family: var(--font-heading);
}

/* ============================================
   Magnetic Interactions
   ============================================ */

.magnetic-element {
  transition: transform var(--transition-fast);
  cursor: pointer;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  background: transparent;
  border: 2px solid var(--color-secondary);
  color: var(--color-secondary);
  font-family: var(--font-body);
  font-size: clamp(0.875rem, 2vw, 1rem);
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  margin-top: 10px;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--color-secondary);
  transition: left var(--transition-base);
  z-index: -1;
}

.btn:hover::before {
  left: 0;
}

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

.btn-primary {
  background: var(--color-secondary);
  color: var(--color-primary);
}

.btn-primary::before {
  color: black;
  background: var(--color-accent);
}

.btn-primary:hover {
  color: var(--color-text);
}

/* ============================================
   Forms
   ============================================ */

.form-container {
  max-width: 600px;
  margin: 0 auto;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background: rgba(1, 11, 19, 0.5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 10px rgba(173, 255, 47, 0.3);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

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

.form-checkbox input[type="checkbox"] {
  margin-top: 4px;
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-secondary);
}

.form-checkbox label {
  font-size: 0.875rem;
  line-height: 1.5;
}

/* ============================================
   Google Maps
   ============================================ */

.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: var(--space-xl) 0;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-md);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ============================================
   Privacy Popup
   ============================================ */

.privacy-popup {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  max-width: 500px;
  width: calc(100% - 40px);
  z-index: 10000;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  display: none;
}

.privacy-popup.active {
  display: block;
  animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
  from {
    transform: translateX(-50%) translateY(100px);
    opacity: 0;
  }
  to {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
  }
}

.popup-content {
  margin-bottom: var(--space-md);
}

.popup-content p {
  font-size: 0.875rem;
  margin-bottom: var(--space-sm);
}

.popup-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
}

/* ============================================
   Temperature Slider (Molecular-Spec)
   ============================================ */

.temp-control {
  max-width: 800px;
  margin: var(--space-xl) auto;
  padding: var(--space-xl);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
}

.temp-slider-container {
  margin: var(--space-xl) 0;
}

.temp-slider-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  color: var(--color-text);
  font-size: 1.125rem;
}

.temp-slider {
  width: 100%;
  height: 8px;
  background: rgba(173, 255, 47, 0.2);
  border-radius: var(--radius-md);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.temp-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  background: var(--color-secondary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-base);
}

.temp-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 30px rgba(173, 255, 47, 0.8);
}

.temp-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  background: var(--color-secondary);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-base);
}

.temp-slider::-moz-range-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 30px rgba(173, 255, 47, 0.8);
}

.temp-display {
  text-align: center;
  font-size: clamp(2rem, 5vw, 4rem);
  font-family: var(--font-heading);
  color: var(--color-accent);
  margin: var(--space-lg) 0;
  text-shadow: 0 0 20px rgba(0, 229, 255, 0.5);
}

.flow-animation {
  width: 100%;
  height: 300px;
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.1), rgba(173, 255, 47, 0.1));
  border-radius: var(--radius-lg);
  margin: var(--space-xl) 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.flow-state {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-family: var(--font-heading);
  color: var(--color-secondary);
  text-align: center;
  z-index: 2;
}

/* ============================================
   Trace Map (Bio-Cycle)
   ============================================ */

.trace-map {
  width: 100%;
  min-height: 500px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin: var(--space-xl) 0;
  position: relative;
  overflow: hidden;
}

.energy-flow {
  position: absolute;
  width: 2px;
  background: linear-gradient(180deg, var(--color-secondary), var(--color-accent));
  opacity: 0.6;
  animation: flowPulse 3s ease-in-out infinite;
}

@keyframes flowPulse {
  0%, 100% {
    opacity: 0.3;
    box-shadow: 0 0 10px var(--color-secondary);
  }
  50% {
    opacity: 0.8;
    box-shadow: 0 0 20px var(--color-secondary);
  }
}

.lifecycle-stage {
  position: absolute;
  padding: var(--space-md);
  background: rgba(173, 255, 47, 0.1);
  border: 1px solid var(--color-secondary);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.875rem;
}

/* ============================================
   X-Ray Views (Mechanical-Vault)
   ============================================ */

.xray-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin: var(--space-xl) 0;
}

.xray-view {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--transition-base);
}

.xray-view:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg), var(--shadow-cyan);
  border-color: var(--color-accent);
}

.xray-image {
  width: 100%;
  height: 250px;
  object-fit: contain;
  margin-bottom: var(--space-md);
  filter: contrast(1.2) brightness(0.9);
}

.scenario-selector {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
  margin: var(--space-xl) 0;
}

.scenario-btn {
  padding: var(--space-sm) var(--space-lg);
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--color-text);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.scenario-btn:hover,
.scenario-btn.active {
  background: var(--color-accent);
  color: var(--color-primary);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-cyan);
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--glass-border);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-xxl);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
}

.footer-section h3 {
  font-size: 1.125rem;
  color: var(--color-secondary);
  margin-bottom: var(--space-md);
}

.footer-menu {
  list-style: none;
}

.footer-menu li {
  margin-bottom: var(--space-sm);
}

.footer-menu a {
  color: var(--color-text);
  opacity: 0.8;
  transition: all var(--transition-base);
}

.footer-menu a:hover {
  opacity: 1;
  color: var(--color-accent);
  padding-left: var(--space-sm);
}

.footer-info {
  font-size: 0.875rem;
  opacity: 0.7;
  line-height: 1.8;
}

.copyright {
  text-align: center;
  padding-top: var(--space-lg);
  margin-top: var(--space-lg);
  border-top: 1px solid var(--glass-border);
  font-size: 0.875rem;
  opacity: 0.6;
}

/* ============================================
   Utility Classes
   ============================================ */

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

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

.mb-lg {
  margin-bottom: var(--space-lg);
}

.hidden {
  display: none;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
  :root {
    --space-xl: 2rem;
    --space-xxl: 3rem;
  }
  
  .hero-section {
    min-height: 50vh;
    padding: var(--space-lg) var(--space-md);
  }
  
  .content-section {
    padding: var(--space-lg) var(--space-md);
  }
  
  .section-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .friction-hud {
    top: 10px;
    right: 10px;
    min-width: 150px;
    padding: var(--space-sm);
    font-size: 0.75rem;
  }
  
  .temp-control {
    padding: var(--space-md);
  }
  
  .form-container {
    padding: var(--space-lg);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .site-header {
    padding: var(--space-sm) var(--space-md);
  }
  
  .hero-section {
    min-height: 40vh;
  }
  
  .btn {
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.875rem;
  }
  
  .privacy-popup {
    bottom: 10px;
    padding: var(--space-md);
  }
}

@media (max-width: 320px) {
  html {
    font-size: 14px;
  }
  
  .site-header {
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .brand-name {
    font-size: 1rem;
  }
}

/* ============================================
   Animations
   ============================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* ============================================
   Loading States
   ============================================ */

.loading {
  opacity: 0.5;
  pointer-events: none;
}