:root {
  --font-primary: "Helvetica Neue", Arial, sans-serif;
  --font-secondary: "Georgia", serif;

  /* Light Theme */
  --color-primary: #005a9c;
  --color-primary-dark: #004375;
  --color-secondary: #009e73;
  --color-accent: #d55e00;
  --color-background: #f8f9fa;
  --color-surface: #ffffff;
  --color-text: #212529;
  --color-text-muted: #6c757d;
  --color-border: #dee2e6;
  --color-shadow: rgba(0, 0, 0, 0.05);
  --color-shadow-medium: rgba(0, 0, 0, 0.1);
  --color-overlay: rgba(255, 255, 255, 0.8);

  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 32px;
  --spacing-xl: 64px;
  --spacing-xxl: 96px;

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

  --shadow-sm: 0 2px 4px var(--color-shadow);
  --shadow-md: 0 4px 8px var(--color-shadow-medium);
  --shadow-lg: 0 10px 20px var(--color-shadow-medium);

  --transition-fast: 0.2s ease-in-out;
  --transition-medium: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);

  --container-width: 1200px;
  --header-height: 80px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #4dabf7;
    --color-primary-dark: #339af0;
    --color-secondary: #20c997;
    --color-accent: #ff922b;
    --color-background: #121212;
    --color-surface: #1e1e1e;
    --color-text: #e0e0e0;
    --color-text-muted: #a0a0a0;
    --color-border: #333333;
    --color-shadow: rgba(255, 255, 255, 0.05);
    --color-shadow-medium: rgba(255, 255, 255, 0.1);
    --color-overlay: rgba(0, 0, 0, 0.8);
  }
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-fast),
    color var(--transition-fast);
}

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

h1 {
  font-size: 3.2rem;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-md);
  max-width: 75ch;
}

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

a:hover {
  color: var(--color-primary-dark);
  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;
}

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

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

.section-padding-light {
  padding-top: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

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

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

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

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

.primary-button:hover {
  background-color: var(--color-primary-dark);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

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

.secondary-button:hover {
  background-color: var(--color-primary);
  color: #ffffff;
  text-decoration: none;
  transform: translateY(-2px);
}

.large-button {
  padding: calc(var(--spacing-md) * 1.2) calc(var(--spacing-lg) * 1.5);
  font-size: 1.1rem;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--color-surface);
  box-shadow: var(--shadow-sm);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  text-decoration: none;
}

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

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

.main-nav a {
  font-weight: 600;
  color: var(--color-text-muted);
  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-primary);
  transition: width var(--transition-fast);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
  text-decoration: none;
}

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

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  z-index: 1001;
}

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

/* Hero Section */
.hero-section {
  padding-top: var(--spacing-xxl);
  padding-bottom: var(--spacing-xxl);
  text-align: center;
  display: flex;
  align-items: center;
  min-height: calc(100vh - var(--header-height));
  background-image: linear-gradient(
    to right,
    var(--color-primary) 0%,
    var(--color-secondary) 100%
  );
}

.hero-section .hero-text {
  max-width: 900px;
  margin: 0 auto;
}

.hero-section h1 {
  font-size: 4rem;
  color: #ffffff;
  margin-bottom: var(--spacing-lg);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-section p {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-xl);
}

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

.hero-cta .primary-button {
  background-color: var(--color-accent);
}

.hero-cta .primary-button:hover {
  background-color: #af4a00;
}

.hero-cta .secondary-button {
  background-color: transparent;
  border-color: #ffffff;
  color: #ffffff;
}

.hero-cta .secondary-button:hover {
  background-color: #ffffff;
  color: var(--color-primary);
}

/* Solutions Section */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.solution-card {
  background-color: var(--color-surface);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast),
    box-shadow var(--transition-fast);
  border: 1px solid var(--color-border);
}

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

.solution-card svg {
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.solution-card h3 {
  margin-bottom: var(--spacing-sm);
}

.solution-card p {
  color: var(--color-text-muted);
}

/* How it works */
.steps-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  position: relative;
}

.step {
  flex: 1;
  text-align: center;
  padding: 0 var(--spacing-lg);
}

.step-number {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 1.8rem;
  font-weight: 700;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto var(--spacing-md);
  border: 4px solid var(--color-background);
  box-shadow: var(--shadow-sm);
}

.step-content h3 {
  margin-bottom: var(--spacing-sm);
}

.step-separator {
  flex-grow: 1;
  height: 2px;
  background-color: var(--color-border);
  margin-top: 30px;
}

/* Features / Accordion */
.accordion {
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.accordion-item:last-child {
  margin-bottom: 0;
}

.accordion-header {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  font-size: 1.1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  color: var(--color-text);
}

.accordion-header span {
  flex-grow: 1;
}

.accordion-header svg {
  transition: transform var(--transition-medium);
  flex-shrink: 0;
  margin-left: var(--spacing-md);
}

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

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-medium),
    padding var(--transition-medium);
}

.accordion-content p {
  padding: 0 var(--spacing-lg) var(--spacing-md);
  color: var(--color-text-muted);
}

/* Who it is for / Tabs */
.tabs-container {
  max-width: 900px;
  margin: 0 auto;
}

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

.tab-button {
  padding: var(--spacing-md) var(--spacing-lg);
  background: none;
  border: none;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  position: relative;
  border-bottom: 3px solid transparent;
  transition: color var(--transition-fast);
}

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

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

.tab-pane {
  display: none;
  animation: fadeIn 0.5s ease-in-out;
}

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

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

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

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

/* Case Study */
.case-study-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

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

.section-header-left {
  text-align: left;
  margin-bottom: var(--spacing-lg);
}

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

.section-header-left p {
  font-size: 1.2rem;
  color: var(--color-secondary);
  font-weight: 600;
}

/* Plans */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  align-items: center;
}

.plan-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.plan-card.featured {
  border-color: var(--color-primary);
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.plan-card.featured::before {
  content: "Najpopularniejszy";
  position: absolute;
  top: 20px;
  right: -45px;
  background-color: var(--color-primary);
  color: #ffffff;
  padding: var(--spacing-sm) var(--spacing-xl);
  transform: rotate(45deg);
  font-size: 0.9rem;
  font-weight: 600;
}

.plan-header {
  margin-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-lg);
}

.plan-price {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

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

.plan-description {
  color: var(--color-text-muted);
  min-height: 40px;
}

.plan-features {
  list-style: none;
  padding: 0;
  margin: var(--spacing-lg) 0;
  text-align: left;
}

.plan-features li {
  margin-bottom: var(--spacing-md);
  padding-left: 30px;
  position: relative;
}

.plan-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-secondary);
  font-weight: 800;
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.testimonial-card {
  background-color: var(--color-surface);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  border-left: 5px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.testimonial-card p {
  font-style: italic;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

.testimonial-author {
  font-style: normal;
}

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

.testimonial-author span {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Team Section */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.team-member {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: var(--color-surface);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.team-member h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.team-member p {
  color: var(--color-primary);
  font-weight: 600;
  margin: 0;
}

/* FAQ Section */
.faq-more {
  text-align: center;
  margin-top: var(--spacing-xl);
}

/* CTA Section */
.cta-section {
  background-color: var(--color-primary);
}

.cta-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2,
.cta-content p {
  color: #ffffff;
}

.cta-form-container {
  margin-top: var(--spacing-lg);
}

#quick-register-form {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  justify-content: center;
}

#quick-register-form input {
  flex-grow: 1;
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  font-size: 1rem;
  max-width: 400px;
}

#quick-register-form .primary-button {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

#quick-register-form .primary-button:hover {
  background-color: #af4a00;
  border-color: #af4a00;
}

.form-disclaimer {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: var(--spacing-md);
}

.form-disclaimer a {
  color: #ffffff;
  text-decoration: underline;
}

#form-thank-you p {
  font-size: 1.2rem;
  font-weight: 600;
}

/* Footer */
.site-footer {
  background-color: var(--color-surface);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
}

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

.footer-column h4 {
  margin-bottom: var(--spacing-md);
  font-size: 1.1rem;
}

.footer-column p,
.footer-column li {
  color: var(--color-text-muted);
}

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

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

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

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

/* Animations on Scroll */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--transition-medium),
    transform 0.6s var(--transition-medium);
}

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

/* Cookie Banner */
.cookie-consent-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-surface);
  box-shadow: 0 -2px 10px var(--color-shadow-medium);
  padding: var(--spacing-md);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
  transform: translateY(100%);
  animation: slideUp 0.5s forwards;
}

.cookie-consent-banner.hidden {
  display: none;
}

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

@keyframes slideUp {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 1024px) {
  h1 {
    font-size: 2.8rem;
  }
  h2 {
    font-size: 2.2rem;
  }
  .hero-section h1 {
    font-size: 3.5rem;
  }

  .solutions-grid,
  .testimonials-grid {
    grid-template-columns: 1fr 1fr;
  }

  .plans-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

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

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

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

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

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

@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-overlay);
    backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

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

  .main-nav ul {
    flex-direction: column;
    text-align: center;
  }

  .main-nav a {
    font-size: 2rem;
    color: var(--color-text);
  }

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

  body.nav-open {
    overflow: hidden;
  }

  .mobile-menu-toggle.active .icon-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
  }
  .mobile-menu-toggle.active .icon-bar:nth-child(2) {
    opacity: 0;
  }
  .mobile-menu-toggle.active .icon-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
  }

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

  h1 {
    font-size: 2.5rem;
  }
  h2 {
    font-size: 2rem;
  }
  .hero-section h1 {
    font-size: 2.8rem;
  }
  .hero-section {
    min-height: 80vh;
  }

  .solutions-grid,
  .testimonials-grid,
  .team-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .steps-container {
    flex-direction: column;
    align-items: center;
  }

  .step-separator {
    width: 2px;
    height: 50px;
    margin: var(--spacing-sm) 0;
  }

  #quick-register-form {
    flex-direction: column;
  }
  #quick-register-form input,
  #quick-register-form button {
    width: 100%;
    max-width: 100%;
  }

  .cookie-consent-banner {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }
}

@media (min-width: 1800px) {
  :root {
    --container-width: 1400px;
  }
  html {
    font-size: 18px;
  }
}