:root {
  /* Primary colors */
  --primary-1: #2ecc71; /* Green for eco-friendly theme */
  --primary-2: #3498db; /* Blue for technology */
  --primary-3: #e74c3c; /* Red accent for energy */
  --primary-4: #f39c12; /* Orange for electric vibrancy */
  --primary-5: #9b59b6; /* Purple for innovation */
  
  /* Light/dark shades */
  --primary-1-light: #72e2a3;
  --primary-1-dark: #25a25a;
  --primary-2-light: #67b2e4;
  --primary-2-dark: #2980b9;
  --primary-3-light: #ed7669;
  --primary-3-dark: #c0392b;
  --primary-4-light: #f6b254;
  --primary-4-dark: #d35400;
  --primary-5-light: #b07cc6;
  --primary-5-dark: #8e44ad;
  
  /* Neutrals */
  --white: #ffffff;
  --light-gray: #f8f9fa;
  --gray: #6c757d;
  --dark-gray: #343a40;
  --black: #212529;
  
  /* Font sizes */
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-xxl: 2rem;
  --font-size-jumbo: 3.5rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-pill: 50rem;
  --radius-circle: 50%;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-default: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Segoe UI', Roboto, sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--dark-gray);
  overflow-x: hidden;
}

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

section {
  padding: var(--spacing-xxl) 0;
  position: relative;
}

.container {
  padding-right: var(--spacing-lg);
  padding-left: var(--spacing-lg);
}

.shape {
  position: absolute;
  z-index: -1;
}

.btn {
  display: inline-block;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 1px solid transparent;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-pill);
  transition: var(--transition-default);
}

.btn-primary {
  background-color: var(--primary-1);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--primary-1-dark);
}

.btn-secondary {
  background-color: var(--primary-2);
  color: var(--white);
}

.btn-secondary:hover {
  background-color: var(--primary-2-dark);
}

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

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 1rem 0;
  transition: var(--transition-default);
}

.header-scrolled {
  padding: 0.5rem 0;
  background-color: rgba(255, 255, 255, 0.98);
}

.navbar-brand {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-1);
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  list-style: none;
}

.nav-link {
  padding: 0.5rem 1rem;
  text-decoration: none;
  color: var(--dark-gray);
  font-weight: 500;
  transition: var(--transition-default);
}

.nav-link:hover, 
.nav-link.active {
  color: var(--primary-1);
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-color: var(--light-gray);
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(46, 204, 113, 0.8), rgba(52, 152, 219, 0.8));
  z-index: -1;
}

.hero-content {
  color: var(--white);
}

.hero-content h1 {
  font-size: var(--font-size-jumbo);
  margin-bottom: var(--spacing-lg);
}

.hero-content p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
}

/* About Section */
.about-section {
  background-color: var(--white);
}

.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.about-feature {
  padding: var(--spacing-lg);
  background-color: var(--light-gray);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  transition: var(--transition-default);
}

.about-feature:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.about-feature i {
  font-size: 2.5rem;
  color: var(--primary-1);
  margin-bottom: var(--spacing-md);
}

/* Services Section */
.services-section {
  background-color: var(--light-gray);
  position: relative;
}

.services-item {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: var(--transition-default);
  height: 100%;
}

.services-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.services-item-img {
  height: 200px;
  overflow: hidden;
}

.services-item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-default);
}

.services-item:hover .services-item-img img {
  transform: scale(1.1);
}

.services-item-content {
  padding: var(--spacing-lg);
}

.services-item-name {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--primary-1);
}

.services-item-desc {
  margin-bottom: var(--spacing-md);
}

.services-item-price {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--primary-3);
  margin-bottom: var(--spacing-md);
}

.services-item-features {
  list-style: none;
  margin-bottom: var(--spacing-md);
}

.services-item-features li {
  padding: var(--spacing-xs) 0;
  display: flex;
  align-items: center;
}

.services-item-features li:before {
  content: "✓";
  color: var(--primary-1);
  margin-right: var(--spacing-sm);
  font-weight: bold;
}

/* Features Section */
.features-section {
  background-color: var(--white);
}

.features-item {
  text-align: center;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.features-item i {
  font-size: 3rem;
  color: var(--primary-2);
  margin-bottom: var(--spacing-md);
  transition: var(--transition-default);
}

.features-item:hover i {
  transform: scale(1.2);
}

/* Price Plan Section */
.priceplan-section {
  background-color: var(--light-gray);
}

.priceplan-item {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: var(--transition-default);
  height: 100%;
  padding: var(--spacing-xl);
  text-align: center;
  position: relative;
  z-index: 1;
}

.priceplan-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background-color: var(--primary-1);
  z-index: -1;
}

.priceplan-item:nth-child(2)::before {
  background-color: var(--primary-2);
}

.priceplan-item:nth-child(3)::before {
  background-color: var(--primary-3);
}

.priceplan-item-name {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

.priceplan-item-price {
  font-size: var(--font-size-jumbo);
  font-weight: 700;
  color: var(--primary-1);
  margin-bottom: var(--spacing-lg);
}

.priceplan-item:nth-child(2) .priceplan-item-price {
  color: var(--primary-2);
}

.priceplan-item:nth-child(3) .priceplan-item-price {
  color: var(--primary-3);
}

.priceplan-item-features {
  list-style: none;
  margin-bottom: var(--spacing-xl);
  text-align: left;
}

.priceplan-item-features li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--light-gray);
  display: flex;
  align-items: center;
}

.priceplan-item-features li:last-child {
  border-bottom: none;
}

.priceplan-item-features li:before {
  content: "✓";
  color: var(--primary-1);
  margin-right: var(--spacing-sm);
  font-weight: bold;
}

.priceplan-item:nth-child(2) .priceplan-item-features li:before {
  color: var(--primary-2);
}

.priceplan-item:nth-child(3) .priceplan-item-features li:before {
  color: var(--primary-3);
}

/* Team Section */
.team-section {
  background-color: var(--white);
}

.team-member {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.team-member-img {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-circle);
  overflow: hidden;
  margin: 0 auto var(--spacing-lg);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  border: 5px solid var(--white);
}

.team-member-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-member-name {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.team-member-role {
  color: var(--primary-1);
  font-weight: 600;
}

/* Reviews Section */
.reviews-section {
  background-color: var(--light-gray);
}

.reviews-slider {
  overflow: hidden;
  padding: var(--spacing-lg) 0;
}

.reviews-item {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  position: relative;
}

.reviews-item::before {
  content: '"';
  position: absolute;
  top: 10px;
  left: 20px;
  font-size: 5rem;
  color: var(--primary-1-light);
  opacity: 0.3;
  line-height: 1;
}

.reviews-item-text {
  margin-bottom: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

.reviews-item-author {
  font-weight: 700;
  color: var(--primary-1);
}

/* Core Info Section */
.coreinfo-section {
  background-color: var(--white);
}

.coreinfo-item {
  text-align: center;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border-radius: var(--radius-md);
  transition: var(--transition-default);
  background-color: var(--light-gray);
}

.coreinfo-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.coreinfo-item i {
  font-size: 2.5rem;
  color: var(--primary-3);
  margin-bottom: var(--spacing-md);
}

/* Contact Section */
.contact-section {
  background-color: var(--light-gray);
}

.contact-form {
  background-color: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

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

.form-control {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-md);
  font-weight: 400;
  line-height: 1.5;
  color: var(--dark-gray);
  background-color: var(--white);
  background-clip: padding-box;
  border: 1px solid #ced4da;
  border-radius: var(--radius-md);
  transition: var(--transition-default);
}

.form-control:focus {
  color: var(--dark-gray);
  background-color: var(--white);
  border-color: var(--primary-1-light);
  outline: 0;
  box-shadow: 0 0 0 0.25rem rgba(46, 204, 113, 0.25);
}

.form-check {
  display: block;
  min-height: 1.5rem;
  padding-left: 1.5em;
  margin-bottom: 0.125rem;
}

.form-check-input {
  width: 1em;
  height: 1em;
  margin-top: 0.25em;
  vertical-align: top;
  background-color: var(--white);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  border: 1px solid rgba(0, 0, 0, 0.25);
  appearance: none;
  print-color-adjust: exact;
}

.form-check-input:checked {
  background-color: var(--primary-1);
  border-color: var(--primary-1);
}

.form-select {
  display: block;
  width: 100%;
  padding: 0.75rem 2.25rem 0.75rem 1rem;
  font-size: var(--font-size-md);
  font-weight: 400;
  line-height: 1.5;
  color: var(--dark-gray);
  background-color: var(--white);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 16px 12px;
  border: 1px solid #ced4da;
  border-radius: var(--radius-md);
  appearance: none;
}

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

/* Blog Section */
.blog-section {
  background-color: var(--white);
}

.blog-item {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  margin-bottom: var(--spacing-xl);
  transition: var(--transition-default);
}

.blog-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.blog-item-img {
  height: 240px;
  overflow: hidden;
}

.blog-item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-default);
}

.blog-item:hover .blog-item-img img {
  transform: scale(1.1);
}

.blog-item-content {
  padding: var(--spacing-lg);
}

.blog-item-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

.blog-item-title a {
  color: var(--dark-gray);
  text-decoration: none;
  transition: var(--transition-default);
}

.blog-item-title a:hover {
  color: var(--primary-1);
}

.blog-item-excerpt {
  margin-bottom: var(--spacing-md);
}

.blog-item-link {
  display: inline-block;
  color: var(--primary-1);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-default);
}

.blog-item-link:hover {
  color: var(--primary-1-dark);
}

/* FAQ Section */
.faq-section {
  background-color: var(--light-gray);
}

.accordion-item {
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.accordion-header {
  margin: 0;
}

.accordion-button {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  padding: 1rem 1.25rem;
  font-size: var(--font-size-md);
  color: var(--dark-gray);
  text-align: left;
  background-color: var(--white);
  border: 0;
  border-radius: 0;
  overflow-anchor: none;
  transition: var(--transition-default);
}

.accordion-button:not(.collapsed) {
  color: var(--primary-1);
  background-color: var(--light-gray);
}

.accordion-button:focus {
  z-index: 3;
  border-color: rgba(46, 204, 113, 0.5);
  outline: 0;
  box-shadow: 0 0 0 0.25rem rgba(46, 204, 113, 0.25);
}

.accordion-body {
  padding: 1rem 1.25rem;
  background-color: var(--white);
}

/* Gallery Section */
.gallery-section {
  background-color: var(--white);
}

.gallery-item {
  margin-bottom: var(--spacing-lg);
  overflow: hidden;
  border-radius: var(--radius-md);
  position: relative;
}

.gallery-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: var(--transition-default);
}

.gallery-item:hover img {
  transform: scale(1.1);
}

/* Footer */
footer {
  background-color: var(--dark-gray);
  color: var(--white);
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

footer a {
  color: var(--white);
  text-decoration: none;
  transition: var(--transition-default);
}

footer a:hover {
  color: var(--primary-1-light);
}

.footer-brand {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  display: inline-block;
}

.footer-desc {
  margin-bottom: var(--spacing-lg);
}

.footer-heading {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
  position: relative;
  padding-bottom: var(--spacing-sm);
}

.footer-heading:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 2px;
  background-color: var(--primary-1);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-contact p {
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
}

.footer-contact p i {
  margin-right: var(--spacing-sm);
  color: var(--primary-1);
}

#site-copyright {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: var(--font-size-sm);
  display: block;
}