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

  --color-primary-light: 48, 89, 219;
  --color-primary-dark: 68, 109, 239;
  --color-secondary-light: 23, 37, 84;
  --color-secondary-dark: 190, 219, 255;
  --color-background-light: 249, 250, 251;
  --color-background-dark: 17, 24, 39;
  --color-surface-light: 255, 255, 255;
  --color-surface-dark: 31, 41, 55;
  --color-text-light: 31, 41, 55;
  --color-text-dark: 229, 231, 235;
  --color-muted-light: 107, 114, 128;
  --color-muted-dark: 156, 163, 175;
  --color-border-light: 229, 231, 235;
  --color-border-dark: 55, 65, 81;
  --color-success-light: 22, 163, 74;
  --color-success-dark: 74, 222, 128;

  --color-primary: rgb(var(--color-primary-light));
  --color-secondary: rgb(var(--color-secondary-light));
  --color-background: rgb(var(--color-background-light));
  --color-surface: rgb(var(--color-surface-light));
  --color-text: rgb(var(--color-text-light));
  --color-text-muted: rgb(var(--color-muted-light));
  --color-border: rgb(var(--color-border-light));
  --color-success: rgb(var(--color-success-light));
  --color-popular-glow: rgba(var(--color-primary-light), 0.3);

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

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

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

  --container-width: 1200px;
  --container-padding: 1.5rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: rgb(var(--color-primary-dark));
    --color-secondary: rgb(var(--color-secondary-dark));
    --color-background: rgb(var(--color-background-dark));
    --color-surface: rgb(var(--color-surface-dark));
    --color-text: rgb(var(--color-text-dark));
    --color-text-muted: rgb(var(--color-muted-dark));
    --color-border: rgb(var(--color-border-dark));
    --color-success: rgb(var(--color-success-dark));
    --color-popular-glow: rgba(var(--color-primary-dark), 0.4);
  }
}

*,
*::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-background);
  color: var(--color-text);
  line-height: 1.7;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  color: var(--color-secondary);
  line-height: 1.3;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

p {
  margin-bottom: 1.5rem;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

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

a:hover {
  text-decoration: underline;
}

ul,
ol {
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

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

section {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 4rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--color-text-muted);
}

.button {
  display: inline-block;
  padding: 0.8rem 1.8rem;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-medium);
  border: 2px solid transparent;
  font-size: 1rem;
  user-select: none;
}

.button:hover {
  text-decoration: none;
}

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

.primary-button:hover {
  background-color: rgb(var(--color-primary-light));
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.large-button {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
}

.full-width {
  width: 100%;
  display: block;
}

.main-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background-color: rgba(var(--color-surface-rgb), 0.85);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-secondary);
}

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

.logo-icon {
  color: var(--color-primary);
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--color-text);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width 0.3s ease;
}

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

.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}

.mobile-nav-toggle .icon-bar {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--color-text);
  margin: 5px 0;
  transition: var(--transition-medium);
}

.hero-section {
  padding: 6rem 0;
  background-color: var(--color-surface);
}

.hero-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
}

.hero-content h1 {
  margin-bottom: 1.5rem;
}

.hero-content p {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  max-width: 90%;
}

.hero-actions {
  display: flex;
  gap: 1rem;
}

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

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

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background-color: var(--color-surface);
  padding: 2.5rem;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  transition: var(--transition-medium);
  text-align: center;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.service-icon {
  width: 64px;
  height: 64px;
  background-color: rgba(var(--color-primary-light), 0.1);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 1.5rem auto;
}

.service-icon svg {
  width: 32px;
  height: 32px;
}

.service-card h3 {
  margin-bottom: 1rem;
}

.how-it-works-section {
  background-color: var(--color-surface);
}

.steps-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.steps-container::before {
  content: "";
  position: absolute;
  left: 2rem;
  top: 1rem;
  bottom: 1rem;
  width: 2px;
  background-color: var(--color-border);
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  position: relative;
}

.step-number {
  flex-shrink: 0;
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: white;
  font-size: 1.5rem;
  font-weight: 700;
  z-index: 1;
  border: 4px solid var(--color-surface);
}

.step-content p {
  margin-bottom: 0;
}

.for-whom-section {
  background-color: var(--color-background);
}

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

.tabs-nav {
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}

.tab-link {
  padding: 1rem 1.5rem;
  cursor: pointer;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 1rem;
  white-space: nowrap;
  transition: var(--transition-fast);
}

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

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

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

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

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

.tab-content ul li {
  padding-left: 2rem;
  position: relative;
}

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

.case-study-section {
  background-color: var(--color-secondary);
  color: var(--color-text-dark);
}

.case-study-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.case-study-section h2,
.case-study-section p {
  color: white;
}

.case-study-section p {
  color: var(--color-muted-dark);
}

.eyebrow-text {
  display: block;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

.case-study-text .secondary-button {
  color: white;
  border-color: white;
}

.case-study-text .secondary-button:hover {
  background-color: white;
  color: var(--color-secondary);
}

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

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  align-items: center;
}

.pricing-card {
  background-color: var(--color-surface);
  padding: 2.5rem;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: var(--transition-medium);
}

.pricing-card.popular {
  border-color: var(--color-primary);
  transform: scale(1.05);
  box-shadow: 0 0 30px var(--color-popular-glow);
  position: relative;
}

.pricing-card.popular::before {
  content: "Najlepszy wybór";
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
}

.pricing-header {
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 2rem;
  margin-bottom: 2rem;
}

.pricing-header h3 {
  font-size: 1.75rem;
}

.price {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin: 0;
}

.price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.audience {
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 0;
}

.features-list {
  list-style: none;
  padding: 0;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.features-list li {
  padding-left: 2rem;
  position: relative;
  margin-bottom: 1rem;
}

.features-list li::before {
  content: "✔";
  color: var(--color-success);
  position: absolute;
  left: 0;
}

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

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

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

.testimonial-text {
  font-style: italic;
  margin-bottom: 1.5rem;
  color: var(--color-text);
  position: relative;
  padding-left: 2rem;
}

.testimonial-text::before {
  content: "“";
  position: absolute;
  left: 0;
  top: -0.5rem;
  font-size: 3rem;
  color: var(--color-primary);
  opacity: 0.5;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-weight: 700;
  color: var(--color-secondary);
}

.author-title {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

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

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

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

.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  color: var(--color-secondary);
  font-size: 1.125rem;
}

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

.faq-item summary svg {
  width: 24px;
  height: 24px;
  transition: transform 0.3s ease;
  color: var(--color-primary);
}

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

.faq-answer {
  padding-bottom: 1.5rem;
  animation: fadeIn 0.4s;
}

.faq-answer p {
  margin-bottom: 0;
}

.faq-more-link {
  text-align: center;
  margin-top: 3rem;
}

.faq-more-link a {
  font-weight: 600;
}

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

.cta-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  background-color: var(--color-background);
  padding: 4rem;
  border-radius: var(--border-radius-lg);
}

.cta-content h2 {
  margin-bottom: 1.5rem;
}

.quick-register-form {
  background-color: var(--color-surface);
  padding: 2.5rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.quick-register-form h3 {
  text-align: center;
  margin-bottom: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  font-size: 0.875rem;
}

.form-group input {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-background);
  color: var(--color-text);
  font-size: 1rem;
  transition: var(--transition-fast);
}

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

.form-terms {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 1rem;
  margin-bottom: 0;
}

.form-thank-you-message {
  text-align: center;
  padding: 3rem;
  border: 2px dashed var(--color-success);
  border-radius: var(--border-radius-lg);
}

.form-thank-you-message h3 {
  color: var(--color-success);
}

.main-footer {
  background-color: var(--color-secondary);
  color: var(--color-muted-dark);
  padding-top: 4rem;
  font-size: 0.95rem;
}

.main-footer h4 {
  color: white;
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  padding-bottom: 3rem;
}

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

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

.footer-column a,
.footer-link {
  color: var(--color-muted-dark);
}

.footer-column a:hover,
.footer-link:hover {
  color: white;
  text-decoration: underline;
}

.footer-column p {
  color: var(--color-muted-dark);
}

.footer-bottom {
  border-top: 1px solid var(--color-border-dark);
  padding: 2rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  color: var(--color-muted-dark);
}

.social-links a:hover {
  color: white;
}

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

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

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

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  color: var(--color-text);
  padding: 1.5rem;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 2000;
  transform: translateY(100%);
  animation: slideUp 0.5s forwards;
}

.cookie-banner p {
  margin: 0;
  padding-right: 1.5rem;
}

.cookie-banner a {
  font-weight: 600;
}

@keyframes slideUp {
  to {
    transform: translateY(0);
  }
}

@media (max-width: 1024px) {
  .main-header .container {
    position: relative;
  }

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

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

  .main-nav ul {
    flex-direction: column;
    padding: 1rem;
    gap: 0;
  }

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

  .main-nav a {
    display: block;
    padding: 1rem;
    width: 100%;
  }

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

  .main-header .primary-button {
    display: none;
  }

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

  body.nav-open {
    overflow: hidden;
  }

  .nav-open .mobile-nav-toggle .icon-bar:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }

  .nav-open .mobile-nav-toggle .icon-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-open .mobile-nav-toggle .icon-bar:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }

  .hero-section .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content p {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-image {
    order: -1;
    margin-bottom: 2rem;
  }

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

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

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

  .about-column,
  .contact-column {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.2rem;
  }

  h2 {
    font-size: 1.8rem;
  }

  section {
    padding: 3rem 0;
  }

  .hero-section {
    padding: 4rem 0;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-actions .button {
    width: 100%;
    max-width: 300px;
  }

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

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

  .cta-section .container {
    padding: 2rem;
  }

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

  .about-column,
  .contact-column {
    grid-column: span 1;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  .cookie-banner {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }

  .cookie-banner p {
    padding-right: 0;
  }
}