:root {
  --primary-color: #0d6efd;
  --primary-color-hover: #0b5ed7;
  --secondary-color: #6c757d;
  --background-color: #ffffff;
  --surface-color: #f8f9fa;
  --text-color: #212529;
  --text-muted-color: #6c757d;
  --border-color: #dee2e6;
  --heading-color: #1a1a1a;
  --white-color: #ffffff;
  --black-color: #000000;
  --success-color: #198754;
  --danger-color: #dc3545;

  --font-family-base: "system-ui", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.7;

  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 5px 15px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);

  --transition-fast: all 0.2s ease-in-out;
  --transition-normal: all 0.3s ease-in-out;

  --container-width: 1240px;
  --container-padding: 20px;
}

@media (prefers-color-scheme: dark) {
  :root:not(.light-theme) {
    --primary-color: #4dabf7;
    --primary-color-hover: #74c0fc;
    --secondary-color: #adb5bd;
    --background-color: #121212;
    --surface-color: #1e1e1e;
    --text-color: #e9ecef;
    --text-muted-color: #adb5bd;
    --border-color: #495057;
    --heading-color: #ffffff;
  }
}

body.dark-theme {
  --primary-color: #4dabf7;
  --primary-color-hover: #74c0fc;
  --secondary-color: #adb5bd;
  --background-color: #121212;
  --surface-color: #1e1e1e;
  --text-color: #e9ecef;
  --text-muted-color: #adb5bd;
  --border-color: #495057;
  --heading-color: #ffffff;
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-base);
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: var(--line-height-base);
  transition: background-color var(--transition-normal),
    color var(--transition-normal);
}

.container {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--heading-color);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}
h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  text-align: center;
  margin-bottom: 3rem;
}
h3 {
  font-size: clamp(1.5rem, 3vw, 1.75rem);
}
h4 {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
}

p {
  margin-bottom: 1rem;
  max-width: 75ch;
}

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

a:hover {
  color: var(--primary-color-hover);
  text-decoration: underline;
}

ul {
  list-style: none;
}

section {
  padding: clamp(3rem, 8vw, 6rem) 0;
  overflow: hidden;
}

.main-header {
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

body.dark-theme .main-header {
  background-color: rgba(18, 18, 18, 0.8);
}

.main-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--heading-color);
  text-decoration: none;
}

.logo svg path {
  stroke: var(--primary-color);
  transition: var(--transition-normal);
}

.logo a:hover svg path {
  stroke: var(--primary-color-hover);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-weight: 500;
  font-size: 1rem;
  color: var(--text-color);
  text-decoration: none;
  position: relative;
  padding: 0.5rem 0;
}

.nav-links a:not(.btn)::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition-fast);
}

.nav-links a:hover:not(.btn)::after {
  width: 100%;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-normal);
  border: 2px solid transparent;
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-color-hover);
  color: var(--white-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

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

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: var(--white-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.mobile-menu-toggle {
  display: none;
  cursor: pointer;
}

.mobile-menu-toggle svg path {
  stroke: var(--heading-color);
}

.hero-section {
  text-align: center;
  padding: 6rem 0;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted-color);
  margin: 1.5rem auto;
}

.hero-cta {
  margin-top: 2.5rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.product-description-section {
  background-color: var(--surface-color);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.product-card {
  background-color: var(--background-color);
  padding: 2.5rem 2rem;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.product-icon {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  text-align: center;
}

.advantage-item {
  padding: 2rem;
}

.advantage-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--surface-color);
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.case-studies-section {
  background-color: var(--surface-color);
}

.case-studies-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

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

.case-study-card {
  background-color: var(--background-color);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 2rem;
}

.case-study-header h3 {
  color: var(--primary-color);
}

.case-study-header p {
  color: var(--text-muted-color);
  font-style: italic;
  margin-bottom: 1rem;
}

.case-study-body {
  flex-grow: 1;
}

.case-study-footer {
  display: flex;
  gap: 2rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.stat .stat-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--heading-color);
}

.stat .stat-label {
  font-size: 0.9rem;
  color: var(--text-muted-color);
}

.mission-vision-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 992px) {
  .mission-vision-content {
    grid-template-columns: 1fr 1fr;
  }
}

.mission-card,
.vision-card {
  text-align: center;
}

.mission-icon,
.vision-icon {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.team-section {
  background-color: var(--surface-color);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  text-align: center;
}

.team-member-icon svg {
  color: var(--text-muted-color);
  transition: var(--transition-normal);
}

.team-member:hover .team-member-icon svg {
  color: var(--primary-color);
  transform: scale(1.05);
}

.team-member-name {
  margin-top: 1rem;
  margin-bottom: 0.25rem;
}

.team-member-role {
  color: var(--text-muted-color);
  font-size: 0.9rem;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

@media (min-width: 992px) {
  .testimonials-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.testimonial-card {
  background-color: var(--surface-color);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  border-left: 4px solid var(--primary-color);
}

.testimonial-rating svg {
  color: #fcc419;
  margin-bottom: 1rem;
}

.testimonial-card blockquote {
  font-style: italic;
  margin-bottom: 1rem;
  border: none;
  padding: 0;
}

.testimonial-card cite {
  font-weight: 600;
  font-style: normal;
}

.cite-name {
  display: block;
  color: var(--heading-color);
}

.cite-company {
  font-size: 0.9rem;
  color: var(--text-muted-color);
  font-weight: 400;
}

.faq-section {
  background-color: var(--surface-color);
}

.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-color);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  padding: 1.5rem 0;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.2rem;
  font-weight: 500;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding-bottom: 1.5rem;
  color: var(--text-muted-color);
}

.faq-more-link {
  text-align: center;
  margin-top: 2rem;
}

.cta-section {
  background-color: var(--primary-color);
  color: var(--white-color);
  text-align: center;
}

.cta-section h2 {
  color: var(--white-color);
}

.cta-section p {
  margin-left: auto;
  margin-right: auto;
  opacity: 0.9;
}

.cta-section .btn {
  margin-top: 1.5rem;
  background-color: var(--white-color);
  color: var(--primary-color);
}

.cta-section .btn:hover {
  background-color: var(--surface-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.main-footer {
  background-color: var(--surface-color);
  padding-top: 4rem;
  padding-bottom: 2rem;
  color: var(--text-muted-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-column h4 {
  color: var(--heading-color);
  margin-bottom: 1.5rem;
}

.footer-column ul li {
  margin-bottom: 0.75rem;
}

.footer-column ul a {
  color: var(--text-muted-color);
  text-decoration: none;
}

.footer-column ul a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}

.footer-contact address {
  font-style: normal;
}

.footer-contact svg {
  color: var(--text-muted-color);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.9rem;
}

#cookie-notice {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--surface-color);
  border-top: 1px solid var(--border-color);
  padding: 1.5rem 0;
  z-index: 1001;
  box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.1);
  transform: translateY(100%);
  transition: transform 0.5s ease-in-out;
}

#cookie-notice.visible {
  transform: translateY(0);
}

.cookie-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.cookie-container p {
  margin-bottom: 0;
  flex-grow: 1;
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--background-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
  }

  .nav-links.nav-open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    display: block;
    padding: 1rem;
  }

  .mobile-menu-toggle {
    display: block;
  }
}