/* ============================================
   Heliotropic Interface - Refractive Elegance
   Natural Lighting Optimization Website
   ============================================ */

:root {
  /* Base Colors - Heliotropic Design */
  --color-solar-flare: #FFFFFF;
  --color-prismatic-gold: #FFD700;
  --color-atmospheric-blue: #E3F2FD;
  --color-deep-space: #2C3E50;
  --color-text-primary: #2C3E50;
  --color-text-secondary: #5A6C7D;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;
  
  /* Typography */
  --font-primary: 'Inter', sans-serif;
  --font-secondary: 'Playfair Display', serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  
  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --border-thin: 1px solid rgba(255, 215, 0, 0.3);
  --border-gold: 2px solid var(--color-prismatic-gold);
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 20px rgba(255, 215, 0, 0.3);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-blur: blur(20px);
}

/* ============================================
   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-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-solar-flare);
  overflow-x: hidden;
  position: relative;
}

/* Dynamic Brightness Effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;

  pointer-events: none;
  z-index: 0;
  transition: opacity var(--transition-slow);
}

/* Variable Weight Font Effect */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: 400;
  transition: font-weight var(--transition-base);
  color: var(--color-text-primary);
}

h1:hover, h2:hover, h3:hover {
  font-weight: 700;
}

h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-md);
}

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

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

a:hover {
  color: var(--color-prismatic-gold);
}

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

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

.site-header {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: var(--border-thin);
  padding: var(--space-md) var(--space-lg);
  z-index: 1000;
  transition: all var(--transition-base);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

.brand-name {
  font-family: var(--font-secondary);
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
}

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

.nav-list {
  display: flex;
  list-style: none;
  gap: 15px;
  align-items: center;
}

.nav-link {
  font-size: var(--font-size-base);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.nav-link:hover {
  background: var(--glass-bg);
  color: var(--color-prismatic-gold);
}

/* Burger Menu Button */
.burger-toggle {
  display: none;
  background: transparent;
  border: var(--border-thin);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  cursor: pointer;
  color: var(--color-text-primary);
  font-size: var(--font-size-xl);
  transition: all var(--transition-base);
  order: 999;
}

.burger-toggle:hover {
  background: var(--glass-bg);
  border-color: var(--color-prismatic-gold);
  color: var(--color-prismatic-gold);
}

.burger-toggle.active {
  border-color: var(--color-prismatic-gold);
  color: var(--color-prismatic-gold);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 400px;
  height: 100vh;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-left: var(--border-gold);
  padding: var(--space-xl);
  z-index: 2000;
  transition: right var(--transition-base);
  overflow-y: auto;
}

.mobile-menu.active {
  right: 0;
}

.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(44, 62, 80, 0.5);
  z-index: 1999;
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.mobile-menu-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav-list {
  list-style: none;
  margin-top: var(--space-xl);
}

.mobile-nav-item {
  margin-bottom: var(--space-md);
}

.mobile-nav-link {
  display: block;
  padding: var(--space-md);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.mobile-nav-link:hover {
  background: var(--glass-bg);
  color: var(--color-prismatic-gold);
}

.mobile-menu-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: transparent;
  border: var(--border-thin);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  cursor: pointer;
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
  transition: all var(--transition-base);
}

.mobile-menu-close:hover {
  border-color: var(--color-prismatic-gold);
  color: var(--color-prismatic-gold);
}

/* Responsive Navigation */
@media (max-width: 1023px) {
  .main-nav {
    display: none;
  }
  
  .burger-toggle {
    display: block;
  }
  
  .mobile-menu {
    display: block;
  }
  
  .mobile-menu-overlay {
    display: block;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 0 var(--space-md);
  }
  
  .brand-name {
    font-size: var(--font-size-lg);
  }
}

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

main {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - 200px);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

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

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

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

.hero-banner {
  position: relative;
  padding: var(--space-xxl) var(--space-lg);
  text-align: center;
  background: linear-gradient(135deg, var(--color-atmospheric-blue) 0%, var(--color-solar-flare) 100%);
  border-bottom: var(--border-thin);
}

.hero-content {
  max-width: 800px;
  margin: 0 auto var(--space-xl);
}

.hero-title {
  font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-4xl));
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-prismatic-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.hero-image-wrapper {
  max-width: 900px;
  margin: var(--space-xl) auto 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: var(--border-thin);
}

.hero-image {
  width: 100%;
  height: auto;
  display: block;
}

/* ============================================
   Cards & Content Blocks
   ============================================ */

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

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

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.05) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover::before {
  opacity: 1;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-prismatic-gold);
}

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

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.card-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

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

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-base);
  font-family: var(--font-primary);
  text-align: center;
  border: var(--border-thin);
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 215, 0, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn:hover {
  border-color: var(--color-prismatic-gold);
  color: var(--color-prismatic-gold);
  box-shadow: var(--shadow-glow);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-prismatic-gold) 0%, rgba(255, 215, 0, 0.8) 100%);
  border-color: var(--color-prismatic-gold);
  color: var(--color-text-primary);
}

.btn-primary:hover {
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.9) 0%, var(--color-prismatic-gold) 100%);
  color: var(--color-text-primary);
}

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

.form-container {
  max-width: 600px;
  margin: 0 auto;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--border-thin);
  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);
  font-weight: 500;
  color: var(--color-text-primary);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.5);
  color: var(--color-text-primary);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-prismatic-gold);
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
  background: rgba(255, 255, 255, 0.8);
}

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

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

.checkbox-input {
  margin-top: 4px;
  cursor: pointer;
}

.checkbox-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

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

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

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg);
}

.footer-menu {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  list-style: none;
}

.footer-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding: var(--space-xs) var(--space-sm);
  transition: color var(--transition-base);
}

.footer-link:hover {
  color: var(--color-prismatic-gold);
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-align: center;
  width: 100%;
  margin-top: var(--space-md);
}

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

.privacy-popup {
  display: none;
  position: fixed;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  max-width: 600px;
  width: calc(100% - var(--space-xl));
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--border-gold);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-lg);
  z-index: 3000;
  animation: slideUp 0.5s ease;
}

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

.privacy-popup.active {
  display: block;
}

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

.privacy-popup-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.privacy-popup-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

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

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

.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: var(--border-thin);
  margin: var(--space-xl) 0;
}

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

/* ============================================
   Special Features
   ============================================ */

/* Refractive Scrolling Effect */
.refractive-indicator {
  position: fixed;
  right: 0;
  top: 0;
  width: 4px;
  height: 100vh;
  background: linear-gradient(
    to bottom,
    #FF0000 0%,
    #FF7F00 14%,
    #FFFF00 28%,
    #00FF00 42%,
    #0000FF 57%,
    #4B0082 71%,
    #9400D3 85%,
    #FF0000 100%
  );
  opacity: 0.3;
  z-index: 999;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.refractive-indicator:hover {
  opacity: 0.6;
}

/* Lux Scale Navigation */
.lux-meter {
  position: fixed;
  right: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 300px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  padding: var(--space-sm);
  z-index: 998;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
}

.lux-scale {
  width: 100%;
  height: calc(100% - 60px);
  background: linear-gradient(
    to top,
    rgba(44, 62, 80, 0.3) 0%,
    rgba(255, 215, 0, 0.5) 50%,
    rgba(255, 255, 255, 0.8) 100%
  );
  border-radius: var(--radius-md);
  position: relative;
}

.lux-indicator {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--color-prismatic-gold);
  border-radius: var(--radius-md);
  transition: height 0.1s linear;
}

.lux-label {
  color: var(--color-text-secondary);
  text-align: center;
}

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

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

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

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

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

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

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

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

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

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

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

@media (max-width: 1024px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .section {
    padding: var(--space-xl) 0;
  }
  
  .card-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
  }
  
  .lux-meter {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --space-xxl: 3rem;
    --space-xl: 2rem;
  }
  
  h1 {
    font-size: 1.3rem;
  }
  
  h2 {
    font-size: 1rem;
  }
  
  .hero-banner {
    padding: var(--space-xl) var(--space-md);
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-container {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-menu {
    justify-content: center;
  }
  
  .contact-wrapper {
    grid-template-columns: 1fr !important;
  }
  
  .privacy-popup {
    width: calc(100% - var(--space-md));
    padding: var(--space-md);
  }
  
  .map-container {
    height: 300px;
  }
}

@media (max-width: 480px) {
  :root {
    --space-lg: 1.5rem;
    --space-xl: 1.5rem;
    --space-xxl: 2rem;
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .form-container {
    padding: var(--space-md);
  }
  
  .btn {
    width: 100%;
    padding: var(--space-md);
  }
}

@media (max-width: 320px) {
  .container {
    padding: 0 var(--space-sm);
  }
  
  .hero-banner {
    padding: var(--space-lg) var(--space-sm);
  }
  
  .section {
    padding: var(--space-lg) 0;
  }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
  .site-header,
  .site-footer,
  .burger-toggle,
  .mobile-menu,
  .privacy-popup,
  .lux-meter,
  .refractive-indicator {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
}