:root {
  --primary: #3498db;
  --primary-dark: #2980b9;
  --secondary: #2ecc71;
  --accent: #1abc9c;
  --text: #2c3e50;
  --text-light: #7f8c8d;
  --bg: #ffffff;
  --bg-light: #f8f9fa;
  --border: #ecf0f1;
  --shadow: rgba(52, 152, 219, 0.1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

img { max-width: 100%; height: auto; display: block; border-radius: 8px; }
a { color: var(--primary); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--primary-dark); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.header { 
  background: var(--bg); 
  border-bottom: 1px solid var(--border); 
  position: sticky; 
  top: 0; 
  z-index: 100; 
  box-shadow: 0 2px 10px var(--shadow);
}
.header .container { 
  display: flex; 
  align-items: center; 
  justify-content: space-between; 
  height: 70px; 
}
.logo { 
  font-weight: 700; 
  font-size: 1.4rem; 
  color: var(--primary); 
}
.nav { display: flex; align-items: center; gap: 2rem; }
.nav-links { 
  display: flex; 
  list-style: none; 
  margin: 0; 
  padding: 0; 
  gap: 2rem; 
}
.nav-links a { 
  padding: 0.5rem 1rem; 
  border-radius: 6px; 
  transition: all 0.3s; 
  font-weight: 500;
}
.nav-links a:hover, .nav-links a.active { 
  background: var(--bg-light); 
  color: var(--primary-dark);
}
.cta-button {
  background: var(--primary);
  color: white;
  padding: 10px 20px;
  border-radius: 25px;
  font-weight: 600;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
}
.cta-button:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}
.cta-button.large {
  padding: 15px 30px;
  font-size: 1.1rem;
}

.burger-menu { 
  display: none; 
  background: none; 
  border: none; 
  width: 30px; 
  height: 30px; 
  position: relative; 
  cursor: pointer; 
}
.burger-bar, .burger-bar::before, .burger-bar::after {
  content: ''; 
  position: absolute; 
  left: 0; 
  right: 0; 
  height: 2px; 
  background: var(--text); 
  transition: 0.3s;
}
.burger-bar { top: 14px; }
.burger-bar::before { top: -8px; }
.burger-bar::after { top: 8px; }

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: white;
  padding: 4rem 0;
  text-align: center;
}
.hero-content h1 {
  font-size: 3rem;
  margin: 0 0 1rem;
  line-height: 1.2;
}
.hero-subtitle {
  font-size: 1.2rem;
  margin: 0 0 2rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.9;
}
.hero-cta {
  background: white;
  color: var(--primary);
  padding: 15px 30px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1.1rem;
  display: inline-block;
  transition: all 0.3s;
}
.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* Interactive Map */
.map-section {
  padding: 4rem 0;
  background: var(--bg-light);
}
.map-section h2 {
  text-align: center;
  margin-bottom: 1rem;
  color: var(--primary);
}
.map-intro {
  text-align: center;
  margin-bottom: 3rem;
  color: var(--text-light);
}
.map-container {
  position: relative;
  max-width: 800px;
  margin: 0 auto 3rem;
}
.map-background img {
  width: 100%;
  border-radius: 12px;
}
.hotspot {
  position: absolute;
  cursor: pointer;
  transition: transform 0.3s;
}
.hotspot:hover {
  transform: scale(1.1);
}
.hotspot-marker {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  box-shadow: 0 4px 15px var(--shadow);
}
.roof-hotspot { top: 15%; left: 60%; }
.garden-hotspot { top: 70%; left: 20%; }
.bathroom-hotspot { top: 40%; left: 75%; }
.storage-hotspot { top: 60%; left: 50%; }
.office-hotspot { top: 30%; left: 30%; }

.info-panels {
  max-width: 800px;
  margin: 0 auto;
}
.info-panel {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  margin-bottom: 1rem;
  box-shadow: 0 4px 15px var(--shadow);
  display: none;
}
.info-panel.active {
  display: block;
}
.info-panel h3 {
  color: var(--primary);
  margin-bottom: 1rem;
}

/* Benefits */
.benefits {
  padding: 4rem 0;
}
.benefits h2 {
  text-align: center;
  margin-bottom: 3rem;
  color: var(--primary);
}
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}
.benefit-card {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 15px var(--shadow);
  transition: transform 0.3s;
}
.benefit-card:hover {
  transform: translateY(-5px);
}
.benefit-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}
.benefit-card h3 {
  color: var(--primary);
  margin-bottom: 1rem;
}

/* Stats */
.stats {
  background: var(--primary);
  color: white;
  padding: 3rem 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}
.stat-number {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}
.stat-label {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* CTA Section */
.cta-section {
  background: var(--bg-light);
  padding: 4rem 0;
  text-align: center;
}
.cta-section h2 {
  color: var(--primary);
  margin-bottom: 1rem;
}

/* Page Content */
.page-content {
  padding: 2rem 0;
}
.page-header {
  text-align: center;
  margin: 2rem 0 3rem;
}
.page-header h1 {
  font-size: 2.5rem;
  margin: 0 0 1rem;
  color: var(--primary);
}
.page-header p {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* Systems */
.systems-hero, .tech-hero, .about-hero {
  margin: 2rem 0 3rem;
  text-align: center;
}
.systems-grid {
  margin: 3rem 0;
}
.system-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin: 4rem 0;
}
.system-card.reverse {
  grid-template-columns: 1fr 1fr;
}
.system-card.reverse .system-content {
  order: 2;
}
.system-card.reverse .system-image {
  order: 1;
}
.system-content h3 {
  color: var(--primary);
  margin-bottom: 1rem;
}
.system-features {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}
.system-features li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}
.system-features li:before {
  content: '✓';
  color: var(--secondary);
  font-weight: bold;
  margin-right: 0.5rem;
}

/* Process Steps */
.process-section {
  margin: 4rem 0;
}
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}
.process-step {
  text-align: center;
  padding: 2rem;
  background: var(--bg-light);
  border-radius: 12px;
}
.step-number {
  width: 60px;
  height: 60px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.5rem;
  margin: 0 auto 1rem;
}

/* Tech Sections */
.tech-sections {
  margin: 3rem 0;
}
.tech-section {
  margin: 4rem 0;
}
.tech-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.tech-section.reverse .tech-content {
  grid-template-columns: 1fr 1fr;
}
.tech-section.reverse .tech-text {
  order: 2;
}
.tech-section.reverse .tech-image {
  order: 1;
}
.tech-section h2 {
  color: var(--primary);
  margin-bottom: 1rem;
}

/* Innovation */
.innovation-section {
  background: var(--bg-light);
  padding: 3rem;
  border-radius: 12px;
  margin: 3rem 0;
}
.innovation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}
.innovation-card {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: 12px;
}
.innovation-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

/* Certifications */
.certifications {
  margin: 3rem 0;
}
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.cert-item {
  text-align: center;
  padding: 1.5rem;
  background: var(--bg-light);
  border-radius: 8px;
}
.cert-item h4 {
  color: var(--primary);
  margin-bottom: 0.5rem;
}

/* About */
.about-content {
  max-width: 800px;
  margin: 0 auto;
}
.about-section {
  margin: 3rem 0;
}
.about-section h2 {
  color: var(--primary);
  margin-bottom: 1rem;
}
.mission-vision {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 2rem 0;
}
.mv-item {
  padding: 2rem;
  background: var(--bg-light);
  border-radius: 12px;
}
.mv-item h3 {
  color: var(--primary);
  margin-bottom: 1rem;
}
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}
.value-card {
  padding: 2rem;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 15px var(--shadow);
  text-align: center;
}
.value-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.value-card h4 {
  color: var(--primary);
  margin-bottom: 1rem;
}
.team-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
  text-align: center;
}
.stat {
  padding: 1.5rem;
  background: var(--primary);
  color: white;
  border-radius: 12px;
}
.stat-number {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}
.achievements {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}
.achievement-item {
  padding: 2rem;
  background: var(--bg-light);
  border-radius: 12px;
}
.achievement-item h4 {
  color: var(--primary);
  margin-bottom: 1rem;
}
.sustainability-goals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 2rem 0;
}
.goal-item {
  padding: 2rem;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 15px var(--shadow);
}
.goal-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.goal-item h4 {
  color: var(--primary);
  margin-bottom: 1rem;
}
.goal-item ul {
  list-style: none;
  padding: 0;
}
.goal-item li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}
.goal-item li:before {
  content: '🎯';
  margin-right: 0.5rem;
}

/* Contact */
.contact-section {
  margin: 3rem 0;
}
.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0 3rem;
}
.contact-item {
  text-align: center;
  padding: 2rem;
  background: var(--bg-light);
  border-radius: 12px;
}
.contact-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.contact-item h3 {
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.contact-item span {
  color: var(--text-light);
  font-size: 0.9rem;
}
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  padding: 2rem;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 15px var(--shadow);
}
.contact-form h2 {
  color: var(--primary);
  margin-bottom: 2rem;
  text-align: center;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.contact-form label {
  display: flex;
  flex-direction: column;
  margin: 1rem 0;
  font-weight: 600;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  margin-top: 0.5rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
  transition: border-color 0.3s;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary);
}
.contact-form .checkbox {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
}
.contact-form .checkbox input {
  margin: 0;
}
#form-result {
  margin-top: 1rem;
  font-weight: 600;
  text-align: center;
}

/* Policies */
.policies-section {
  margin: 4rem 0;
}
.policy-block {
  margin: 2rem 0;
  padding: 2rem;
  background: var(--bg-light);
  border-radius: 8px;
  border-left: 4px solid var(--primary);
}
.policy-block h3 {
  margin: 0 0 1rem;
  color: var(--primary);
}

/* Footer */
.footer {
  background: var(--text);
  color: white;
  padding: 3rem 0 1rem;
  margin-top: 4rem;
}
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-section h3, .footer-section h4 {
  margin: 0 0 1rem;
  color: var(--accent);
}
.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-section li {
  margin: 0.5rem 0;
}
.footer-section a {
  color: #bdc3c7;
  transition: color 0.3s;
}
.footer-section a:hover {
  color: white;
}
.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid #34495e;
}

/* Cookie Banner */
#cookie-banner {
  position: fixed;
  bottom: 20px;
  left: 20px;
  right: 20px;
  background: var(--text);
  color: white;
  padding: 1rem;
  border-radius: 8px;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  z-index: 1000;
  box-shadow: 0 4px 15px var(--shadow);
}
#cookie-banner a {
  color: var(--accent);
}
#cookie-accept {
  background: var(--primary);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.3s;
}
#cookie-accept:hover {
  background: var(--primary-dark);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem;
    display: none;
  }
  .burger-menu {
    display: block;
  }
  body.menu-open .nav-links {
    display: flex;
  }
  
  .system-card,
  .tech-content,
  .mission-vision,
  .sustainability-goals {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .system-card.reverse .system-content,
  .system-card.reverse .system-image,
  .tech-section.reverse .tech-text,
  .tech-section.reverse .tech-image {
    order: unset;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
  
  #cookie-banner {
    flex-direction: column;
    text-align: center;
  }
  
  .hotspot {
    transform: scale(0.8);
  }
}
