:root {
  --font-primary: "system-ui", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  --font-secondary: "Georgia", "Times New Roman", serif;

  --color-primary-light: #005a9c;
  --color-primary-dark: #0073b1;
  --color-accent-light: #e67e22;
  --color-accent-dark: #f39c12;

  --color-text-light: #333333;
  --color-text-secondary-light: #555555;
  --color-background-light: #ffffff;
  --color-background-secondary-light: #f8f9fa;
  --color-border-light: #dee2e6;
  --color-card-background-light: #ffffff;
  --color-card-shadow-light: rgba(0, 0, 0, 0.05);

  --color-text-dark: #e0e0e0;
  --color-text-secondary-dark: #b0b0b0;
  --color-background-dark: #121212;
  --color-background-secondary-dark: #1e1e1e;
  --color-border-dark: #444444;
  --color-card-background-dark: #2a2a2a;
  --color-card-shadow-dark: rgba(0, 0, 0, 0.2);

  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 80px;

  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;

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

  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-h1: 3rem;
  --font-size-h2: 2.25rem;
  --font-size-h3: 1.75rem;
  --font-size-h4: 1.25rem;

  --line-height-base: 1.6;
  --line-height-heading: 1.2;

  --container-width: 1200px;
  --header-height: 70px;
}

[data-theme="light"] {
  --color-primary: var(--color-primary-light);
  --color-accent: var(--color-accent-light);
  --color-text: var(--color-text-light);
  --color-text-secondary: var(--color-text-secondary-light);
  --color-background: var(--color-background-light);
  --color-background-secondary: var(--color-background-secondary-light);
  --color-border: var(--color-border-light);
  --color-card-background: var(--color-card-background-light);
  --color-card-shadow: var(--color-card-shadow-light);
}

[data-theme="dark"] {
  --color-primary: var(--color-primary-dark);
  --color-accent: var(--color-accent-dark);
  --color-text: var(--color-text-dark);
  --color-text-secondary: var(--color-text-secondary-dark);
  --color-background: var(--color-background-dark);
  --color-background-secondary: var(--color-background-secondary-dark);
  --color-border: var(--color-border-dark);
  --color-card-background: var(--color-card-background-dark);
  --color-card-shadow: var(--color-card-shadow-dark);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: var(--color-primary-dark);
    --color-accent: var(--color-accent-dark);
    --color-text: var(--color-text-dark);
    --color-text-secondary: var(--color-text-secondary-dark);
    --color-background: var(--color-background-dark);
    --color-background-secondary: var(--color-background-secondary-dark);
    --color-border: var(--color-border-dark);
    --color-card-background: var(--color-card-background-dark);
    --color-card-shadow: var(--color-card-shadow-dark);
  }
}

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

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: var(--line-height-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-medium),
    color var(--transition-medium);
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

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

h1 {
  font-size: var(--font-size-h1);
}
h2 {
  font-size: var(--font-size-h2);
}
h3 {
  font-size: var(--font-size-h3);
}
h4 {
  font-size: var(--font-size-h4);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

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

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

ul,
ol {
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

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

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

.section-padding {
  padding-top: var(--spacing-section);
  padding-bottom: var(--spacing-section);
}

.section-padding-light {
  padding-top: var(--spacing-section);
  padding-bottom: var(--spacing-section);
  background-color: var(--color-background-secondary);
}

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

.section-title h2 {
  margin-bottom: var(--spacing-md);
}

.section-title p {
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  font-size: var(--font-size-lg);
}

.button {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-medium);
  border: 2px solid transparent;
  font-size: var(--font-size-base);
  text-decoration: none;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  text-decoration: none;
}

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

.button-primary:hover {
  background-color: var(--color-accent);
  color: white;
}

.button-accent {
  background-color: var(--color-accent);
  color: white;
}

.button-accent:hover {
  background-color: var(--color-primary);
  color: white;
}

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

.button-secondary:hover {
  background-color: var(--color-primary);
  color: white;
}

.button-large {
  padding: var(--spacing-lg) var(--spacing-xxl);
  font-size: var(--font-size-lg);
}

.button-full {
  width: 100%;
}

.link-with-arrow {
  display: inline-block;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: var(--spacing-lg);
}

.link-with-arrow::after {
  content: " →";
  transition: var(--transition-fast);
  display: inline-block;
}

.link-with-arrow:hover::after {
  transform: translateX(5px);
}

.site-header {
  background-color: var(--color-background);
  height: var(--header-height);
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px var(--color-card-shadow);
  transition: background-color var(--transition-medium);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.logo:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.main-navigation ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-xl);
}

.main-navigation a {
  text-decoration: none;
  color: var(--color-text-secondary);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
}

.main-navigation a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-medium);
}

.main-navigation a:hover,
.main-navigation a.active {
  color: var(--color-primary);
}

.main-navigation a:hover::after,
.main-navigation a.active::after {
  width: 100%;
}

.hero-section {
  padding-top: var(--spacing-section);
  padding-bottom: calc(var(--spacing-section) * 1.5);
  text-align: center;
  background-color: var(--color-background-secondary);
}

.hero-text h1 {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-lg);
}

.hero-text p {
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

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

.feature-card {
  background-color: var(--color-card-background);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-md);
  text-align: center;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 15px var(--color-card-shadow);
  transition: var(--transition-medium);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px var(--color-card-shadow);
  border-color: var(--color-primary);
}

.feature-icon {
  margin-bottom: var(--spacing-lg);
}

.feature-icon svg {
  color: var(--color-primary);
  width: 48px;
  height: 48px;
}

.feature-card h3 {
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-xl);
}

.how-it-works-section .steps-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-xl);
}

.step {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  flex: 1;
}

.step-number {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: white;
  font-size: var(--font-size-xl);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-content h4 {
  margin-bottom: var(--spacing-sm);
}

.step-arrow {
  display: flex;
  align-items: center;
  height: 100px;
  color: var(--color-border);
}

.step-arrow svg {
  width: 32px;
  height: 32px;
}

.tabs-container {
  max-width: 900px;
  margin: 0 auto;
}

.tabs-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-xl);
}

.tab-link {
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: pointer;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  transition: var(--transition-medium);
  margin-bottom: -1px;
  font-weight: 500;
}

.tab-link:hover {
  color: var(--color-primary);
}

.tab-link.active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  font-weight: 600;
}

.tab-content {
  display: none;
  animation: fadeIn 0.5s;
}

.tab-content.active {
  display: block;
}

.tab-content h4 {
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.tab-content ul {
  list-style: none;
  padding-left: 0;
}

.tab-content ul li {
  padding-left: var(--spacing-xl);
  position: relative;
}

.tab-content ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.case-study-section .case-study-content {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--spacing-xxl);
  align-items: center;
}

.case-study-image img {
  border-radius: var(--border-radius-lg);
  box-shadow: 0 10px 30px var(--color-card-shadow);
}

.eyebrow-text {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
}

.case-study-text h2 {
  margin-bottom: var(--spacing-lg);
}

.case-study-text blockquote {
  font-family: var(--font-secondary);
  font-size: var(--font-size-lg);
  font-style: italic;
  border-left: 4px solid var(--color-primary);
  padding-left: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  color: var(--color-text);
}

.case-study-results h4 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.case-study-results ul {
  list-style: none;
  padding-left: 0;
}

.case-study-results li {
  margin-bottom: var(--spacing-sm);
}

.case-study-results li strong {
  color: var(--color-text);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  align-items: stretch;
}

.pricing-card {
  background-color: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: var(--transition-medium);
}

.pricing-card.featured {
  border-color: var(--color-primary);
  transform: scale(1.05);
  box-shadow: 0 10px 40px var(--color-card-shadow);
}

.pricing-header {
  padding: var(--spacing-xl);
  text-align: center;
  position: relative;
}

.featured-badge {
  position: absolute;
  top: 0;
  right: var(--spacing-lg);
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 0 0 var(--border-radius-sm) var(--border-radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.pricing-header h3 {
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-xl);
}

.price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.price span {
  font-size: 3rem;
}

.price span + span {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  font-weight: 400;
}

.pricing-body {
  padding: var(--spacing-xl);
  flex-grow: 1;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.pricing-body ul {
  list-style: none;
  padding: 0;
}

.pricing-body li {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-xl);
  position: relative;
}

.pricing-body li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.pricing-footer {
  padding: var(--spacing-xl);
  margin-top: auto;
}

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

.testimonial-card {
  background-color: var(--color-card-background);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.testimonial-text {
  font-style: italic;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  flex-grow: 1;
  position: relative;
  padding-left: var(--spacing-xl);
}

.testimonial-text::before {
  content: "“";
  font-family: var(--font-secondary);
  font-size: 3rem;
  color: var(--color-primary);
  position: absolute;
  left: -10px;
  top: -10px;
  opacity: 0.2;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: auto;
}

.author-info strong {
  display: block;
  color: var(--color-text);
}

.author-info span {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.team-member {
  text-align: center;
  background-color: var(--color-card-background);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
}

.team-member h4 {
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.section-cta {
  text-align: center;
  margin-top: var(--spacing-xxl);
}

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

.faq-accordion details {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
}

.faq-accordion details:first-of-type {
  border-top: 1px solid var(--color-border);
}

.faq-accordion summary {
  font-size: var(--font-size-lg);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text);
}

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

.faq-accordion summary svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.faq-accordion details[open] summary svg {
  transform: rotate(180deg);
}

.faq-accordion details[open] summary {
  color: var(--color-primary);
}

.faq-accordion details p {
  padding-top: var(--spacing-md);
  padding-left: var(--spacing-sm);
  color: var(--color-text-secondary);
}

.cta-form-section {
  background-color: var(--color-primary);
  color: white;
}

.cta-form-section h2,
.cta-form-section p {
  color: white;
}

.cta-form-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: center;
}

.cta-form-box {
  background-color: var(--color-background);
  color: var(--color-text);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cta-form-box h4 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

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

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

.form-group input {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-base);
  background-color: var(--color-background-secondary);
  color: var(--color-text);
  transition: var(--transition-fast);
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 115, 177, 0.2);
}

.form-legal {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-align: center;
  margin-top: var(--spacing-md);
}

.form-legal a {
  font-weight: 600;
}

#form-success-message p {
  color: var(--color-primary);
  font-weight: 600;
  text-align: center;
  background-color: var(--color-background-secondary);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-md);
}

.site-footer {
  background-color: var(--color-background-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
}

.footer-column h4 {
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

.footer-column ul {
  list-style: none;
  padding: 0;
}

.footer-column li {
  margin-bottom: var(--spacing-md);
}

.footer-column a,
.footer-column address,
.footer-column p {
  color: var(--color-text-secondary);
}

.footer-column a:hover {
  color: var(--color-primary);
}

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

.footer-bottom {
  padding-top: var(--spacing-lg);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.fade-in-section {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.cookie-consent-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-card-background);
  box-shadow: 0 -2px 10px var(--color-card-shadow);
  padding: var(--spacing-lg);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
  transform: translateY(100%);
  transition: transform 0.5s ease-in-out;
}

.cookie-consent-banner.active {
  transform: translateY(0);
}

.cookie-consent-banner p {
  margin: 0;
  color: var(--color-text-secondary);
}

.cookie-consent-banner .button {
  flex-shrink: 0;
}

@media (max-width: 1200px) {
  :root {
    --font-size-h1: 2.5rem;
    --font-size-h2: 2rem;
  }
}

@media (max-width: 992px) {
  .main-navigation {
    display: none;
  }

  .case-study-section .case-study-content {
    grid-template-columns: 1fr;
  }

  .cta-form-container {
    grid-template-columns: 1fr;
  }

  .pricing-card.featured {
    transform: scale(1);
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-section: 60px;
    --font-size-h1: 2.25rem;
    --font-size-h2: 1.75rem;
  }

  .header-content {
    padding-right: var(--spacing-md);
  }

  .how-it-works-section .steps-container {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
  }

  .step {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .step-arrow {
    transform: rotate(90deg);
    height: auto;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .cookie-consent-banner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 576px) {
  :root {
    --font-size-base: 15px;
  }

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

  .hero-cta {
    flex-direction: column;
  }

  .tabs-nav {
    flex-direction: column;
    gap: 0;
  }

  .tab-link {
    border-bottom: 1px solid var(--color-border);
  }

  .tab-link.active {
    border-bottom: 3px solid var(--color-primary);
  }

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