:root {
  --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji",
    "Segoe UI Symbol";
  --font-secondary: "Georgia", "Times New Roman", serif;

  --color-bg: #ffffff;
  --color-bg-alt: #f7f8fa;
  --color-bg-accent: #1a202c;

  --color-text: #1a202c;
  --color-text-secondary: #4a5568;
  --color-text-inverted: #ffffff;
  --color-text-accent: #2b6cb0;

  --color-border: #e2e8f0;
  --color-border-focus: #3182ce;

  --color-brand: #2b6cb0;
  --color-brand-hover: #2c5282;
  --color-brand-light: #bee3f8;

  --color-success: #38a169;
  --color-warning: #d69e2e;
  --color-danger: #e53e3e;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;

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

  --transition-fast: all 0.2s ease-in-out;
  --transition-slow: all 0.4s ease-in-out;

  --container-width: 1280px;
  --container-padding: 1.5rem;

  --font-size-sm: clamp(0.8rem, 0.17vw + 0.76rem, 0.96rem);
  --font-size-base: clamp(1rem, 0.34vw + 0.91rem, 1.33rem);
  --font-size-md: clamp(1.25rem, 0.61vw + 1.1rem, 1.77rem);
  --font-size-lg: clamp(1.56rem, 1vw + 1.31rem, 2.36rem);
  --font-size-xl: clamp(1.95rem, 1.56vw + 1.56rem, 3.15rem);
  --font-size-xxl: clamp(2.44rem, 2.38vw + 1.85rem, 4.2rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1a202c;
    --color-bg-alt: #2d3748;
    --color-bg-accent: #edf2f7;

    --color-text: #edf2f7;
    --color-text-secondary: #a0aec0;
    --color-text-inverted: #1a202c;
    --color-text-accent: #63b3ed;

    --color-border: #4a5568;
    --color-border-focus: #63b3ed;

    --color-brand: #63b3ed;
    --color-brand-hover: #90cdf4;
    --color-brand-light: #2a4365;

    --color-success: #68d391;
    --color-warning: #f6e05e;
    --color-danger: #fc8181;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2),
      0 2px 4px -1px rgba(0, 0, 0, 0.16);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.2),
      0 4px 6px -2px rgba(0, 0, 0, 0.15);
  }
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: var(--font-size-base);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

a:hover {
  text-decoration: underline;
  opacity: 0.8;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-xxl);
}
h2 {
  font-size: var(--font-size-xl);
}
h3 {
  font-size: var(--font-size-lg);
}
h4 {
  font-size: var(--font-size-md);
}

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

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

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.narrow-container {
  max-width: 800px;
}

.section-divider {
  border: 0;
  height: 1px;
  background-color: var(--color-border);
  margin: var(--spacing-xxl) auto;
  width: 80%;
}

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

@media (prefers-color-scheme: dark) {
  .main-header {
    background-color: rgba(26, 32, 44, 0.8);
  }
}

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

.logo {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
  opacity: 1;
}

.logo svg {
  margin-right: var(--spacing-sm);
  color: var(--color-brand);
  width: 28px;
  height: 28px;
}

.main-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
}

.main-nav li {
  margin: 0 var(--spacing-md);
}

.main-nav a {
  color: var(--color-text-secondary);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
}

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

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-text);
}

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

.cta-button {
  background-color: var(--color-brand);
  color: var(--color-text-inverted);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid transparent;
  transition: var(--transition-fast);
}

.cta-button:hover {
  background-color: var(--color-brand-hover);
  color: var(--color-text-inverted);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.cta-button.large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-md);
}

.cta-button.inverted {
  background-color: var(--color-bg);
  color: var(--color-brand);
  border-color: var(--color-brand);
}

.cta-button.inverted:hover {
  background-color: var(--color-brand-light);
  color: var(--color-brand-hover);
}

.cta-button svg {
  margin-right: var(--spacing-sm);
}

.hero-section {
  padding: var(--spacing-xxl) 0;
  background-color: var(--color-bg-alt);
  text-align: center;
}

.hero-section .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

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

.hero-text h1 {
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.hero-text .subtitle {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
}

.hero-image {
  max-width: 600px;
  margin: var(--spacing-xl) auto 0;
}

.hero-image img {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

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

.content-section.gray-bg {
  background-color: var(--color-bg-alt);
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
}

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

.section-header p {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
}

.grid-container {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-container.four-cols {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-container.two-cols {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  align-items: center;
}

.grid-item {
  background-color: var(--color-bg);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  transition: var(--transition-slow);
}

.grid-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.grid-item svg {
  color: var(--color-brand);
  width: 48px;
  height: 48px;
  margin-bottom: var(--spacing-md);
}

.grid-item h3 {
  font-size: var(--font-size-md);
  margin-bottom: var(--spacing-sm);
}

.grid-item p {
  font-size: var(--font-size-sm);
  line-height: 1.5;
}

.feature-image {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.steps-list {
  list-style: none;
  padding-left: 0;
  counter-reset: steps-counter;
}

.steps-list li {
  counter-increment: steps-counter;
  position: relative;
  padding-left: 40px;
  margin-bottom: var(--spacing-lg);
}

.steps-list li::before {
  content: counter(steps-counter);
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: var(--color-brand-light);
  color: var(--color-brand);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
}

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

.tabs-nav {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-lg);
  overflow-x: auto;
}

.tab-link {
  background: none;
  border: none;
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: pointer;
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  white-space: nowrap;
  display: flex;
  align-items: center;
  transition: var(--transition-fast);
}

.tab-link svg {
  margin-right: var(--spacing-sm);
  width: 20px;
  height: 20px;
}

.tab-link::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--color-brand);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.tab-link.active {
  color: var(--color-brand);
}

.tab-link.active::after {
  transform: scaleX(1);
}

.tab-content {
  display: none;
  padding: var(--spacing-lg) 0;
  animation: fadeIn 0.5s ease;
}

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

.tab-content h3 {
  margin-bottom: var(--spacing-lg);
}

.tab-content ul {
  list-style-type: "✓ ";
  padding-left: var(--spacing-lg);
}

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

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

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

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

.accordion-header {
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  padding: var(--spacing-lg) 0;
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-icon {
  transition: var(--transition-slow);
  min-width: 24px;
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease-in-out;
}

.accordion-content p,
.accordion-content ul {
  padding: 0 var(--spacing-md) var(--spacing-md);
}

.accordion-item.active .accordion-content {
  max-height: 1000px; /* Should be large enough */
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

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

.testimonial-card .quote {
  font-family: var(--font-secondary);
  font-style: italic;
  font-size: var(--font-size-md);
  flex-grow: 1;
  color: var(--color-text);
}

.testimonial-card .quote::before {
  content: "“";
  font-size: 3rem;
  color: var(--color-brand);
  position: relative;
  top: 1rem;
  left: -1rem;
}

.testimonial-card .author {
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-top: var(--spacing-lg);
  margin-bottom: 0;
  text-align: right;
}

.cta-section {
  background-color: var(--color-bg-accent);
  color: var(--color-text-inverted);
  padding: var(--spacing-xxl) 0;
}

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

.cta-section p {
  color: var(--color-border);
}

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

.cta-text-content .small-text {
  font-size: var(--font-size-sm);
  opacity: 0.7;
  margin-top: var(--spacing-md);
}

.cta-image-content img {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.main-footer {
  background-color: var(--color-bg-alt);
  padding: var(--spacing-xxl) 0 0;
  color: var(--color-text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
}

.footer-column h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

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

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

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

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

.footer-column.contact p {
  display: flex;
  align-items: flex-start;
}

.footer-column.contact svg {
  margin-right: var(--spacing-sm);
  margin-top: 4px;
  flex-shrink: 0;
  color: var(--color-text-secondary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  text-align: center;
  font-size: var(--font-size-sm);
}

#cookie-consent-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-bg-accent);
  color: var(--color-text-inverted);
  padding: var(--spacing-md);
  z-index: 2000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
}

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

#cookie-consent-banner a {
  color: var(--color-brand-light);
  text-decoration: underline;
}

#accept-cookies {
  background-color: var(--color-brand);
  color: var(--color-text-inverted);
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  margin-left: var(--spacing-lg);
  white-space: nowrap;
}

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

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@media (min-width: 768px) {
  .hero-section .container {
    grid-template-columns: 2fr 1fr;
    text-align: left;
  }

  .hero-content {
    margin: 0;
  }

  .hero-image {
    margin: 0;
  }

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

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-column.about {
    grid-column: 1 / -1;
  }
}

@media (max-width: 767px) {
  .main-header .container {
    position: relative;
  }

  .cta-button {
    display: none;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }

  .main-nav.active {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    padding: var(--spacing-md) 0;
  }

  .main-nav li {
    margin: 0;
    width: 100%;
  }

  .main-nav a {
    display: block;
    padding: var(--spacing-md) var(--container-padding);
    width: 100%;
  }

  .main-nav a::after {
    display: none;
  }

  .hamburger-menu {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 2rem;
    height: 2rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 10;
  }

  .hamburger-menu span {
    width: 2rem;
    height: 0.25rem;
    background: var(--color-text);
    border-radius: 10px;
    transition: all 0.3s linear;
    position: relative;
    transform-origin: 1px;
  }

  .hamburger-menu.active span:nth-child(1) {
    transform: rotate(45deg);
  }

  .hamburger-menu.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(20px);
  }

  .hamburger-menu.active span:nth-child(3) {
    transform: rotate(-45deg);
  }

  .cta-section,
  .hero-section,
  .content-section {
    padding: var(--spacing-xl) 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  #cookie-consent-banner p {
    margin-bottom: var(--spacing-md);
  }

  #accept-cookies {
    margin-left: 0;
  }
}