:root {
  --color-primary: #1a365d;
  --color-primary-light: #2c5282;
  --color-accent: #f6ad55;
  --color-accent-dark: #dd6b20;
  --color-dark: #2d3748;
  --color-dark-light: #4a5568;
  --color-light: #f7fafc;
  --color-white: #ffffff;
  --color-error: #e53e3e;
  --color-success: #38a169;
  --color-border: #e2e8f0;
  --color-text: #2d3748;
  --color-text-light: #718096;
  
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  --border-radius: 4px;
  --border-radius-lg: 8px;
  --border-radius-xl: 12px;
  
  --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);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  
  --header-height: 80px;
  --container-max: 1200px;
}

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

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

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover,
a:focus {
  color: var(--color-accent);
}

button {
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: 1rem); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-weight: 600;
  text-align: center;
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  min-height: 44px;
  min-width: 44px;
}

.btn:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-accent-dark);
  color: var(--color-white);
}

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

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: var(--color-primary-light);
  color: var(--color-white);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

.btn-outline:hover,
.btn-outline:focus {
  background-color: var(--color-white);
  color: var(--color-primary);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-white);
  z-index: 1000;
  transition: all var(--transition-base);
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .header-container {
    padding: 0 var(--spacing-xl);
  }
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
}

.logo:hover,
.logo:focus {
  color: var(--color-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-accent);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 800;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 24px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.main-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background-color: var(--color-white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: right var(--transition-base);
  z-index: 1000;
}

.main-nav.active {
  right: 0;
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }
  
  .main-nav {
    position: static;
    width: auto;
    height: auto;
    flex-direction: row;
    background-color: transparent;
  }
}

.nav-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xl);
}

@media (min-width: 1024px) {
  .nav-list {
    flex-direction: row;
    gap: var(--spacing-xl);
  }
}

.nav-link {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-dark);
  padding: var(--spacing-sm) 0;
  position: relative;
}

@media (min-width: 1024px) {
  .nav-link {
    font-size: 1rem;
  }
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link:focus::after {
  width: 100%;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-accent);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  background-color: var(--color-primary);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(26, 54, 93, 0.95) 0%, rgba(26, 54, 93, 0.7) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md);
  max-width: 800px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .hero-content {
    padding: var(--spacing-3xl) var(--spacing-xl);
  }
}

.hero-title {
  font-size: var(--font-size-3xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
  .hero-title {
    font-size: var(--font-size-5xl);
  }
}

.hero-title span {
  color: var(--color-accent);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .hero-subtitle {
    font-size: var(--font-size-xl);
  }
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
}

@media (min-width: 480px) {
  .hero-buttons {
    flex-direction: row;
    justify-content: center;
  }
}

.section {
  padding: var(--spacing-3xl) 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--spacing-4xl) 0;
  }
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
  .section-title {
    font-size: var(--font-size-3xl);
  }
}

.section-subtitle {
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

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

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

@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
  }
}

.service-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.service-icon {
  width: 60px;
  height: 60px;
  background-color: var(--color-primary);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
  font-size: var(--font-size-2xl);
}

.service-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.service-description {
  color: var(--color-text-light);
}

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

.about-grid {
  display: grid;
  gap: var(--spacing-2xl);
  align-items: center;
}

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

.about-image {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-content h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.about-content h2 span {
  color: var(--color-accent);
}

.about-content p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-md);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-accent);
  display: block;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
}

.contact-form {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  max-width: 600px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .contact-form {
    padding: var(--spacing-2xl);
  }
}

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

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-dark);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-white);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 44px;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(246, 173, 85, 0.2);
}

.form-input.error,
.form-textarea.error,
.form-select.error {
  border-color: var(--color-error);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-error {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
  display: none;
}

.form-error.visible {
  display: block;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.checkbox-input {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--color-accent);
}

.checkbox-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  cursor: pointer;
}

.checkbox-label a {
  color: var(--color-primary);
  text-decoration: underline;
}

.checkbox-label a:hover {
  color: var(--color-accent);
}

.form-submit {
  width: 100%;
  margin-top: var(--spacing-md);
}

.form-success {
  text-align: center;
  padding: var(--spacing-xl);
  display: none;
}

.form-success.visible {
  display: block;
}

.form-success-icon {
  width: 60px;
  height: 60px;
  background-color: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  color: var(--color-white);
  font-size: var(--font-size-2xl);
}

.form-success-title {
  color: var(--color-success);
  margin-bottom: var(--spacing-sm);
}

.footer {
  background-color: var(--color-dark);
  color: var(--color-white);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer-description {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

.footer-title {
  font-size: var(--font-size-lg);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-link {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer-link:hover,
.footer-link:focus {
  color: var(--color-accent);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-copyright {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
}

.footer-legal {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-legal-link {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
}

.footer-legal-link:hover,
.footer-legal-link:focus {
  color: var(--color-accent);
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-white);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
  z-index: 9999;
  transform: translateY(100%);
  transition: transform var(--transition-base);
  max-height: 90vh;
  overflow-y: auto;
}

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

.cookie-content {
  padding: var(--spacing-lg);
  max-width: var(--container-max);
  margin: 0 auto;
}

@media (min-width: 768px) {
  .cookie-content {
    padding: var(--spacing-lg) var(--spacing-xl);
  }
}

.cookie-text {
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
  font-size: var(--font-size-sm);
}

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

.cookie-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.cookie-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  min-height: 44px;
}

.cookie-btn-accept {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.cookie-btn-accept:hover {
  background-color: var(--color-accent-dark);
}

.cookie-btn-reject {
  background-color: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.cookie-btn-reject:hover {
  border-color: var(--color-text);
}

.cookie-btn-settings {
  background-color: transparent;
  color: var(--color-primary);
  text-decoration: underline;
}

.cookie-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.cookie-modal-overlay.visible {
  display: flex;
}

.cookie-modal {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}

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

.cookie-modal-title {
  font-size: var(--font-size-xl);
  color: var(--color-dark);
}

.cookie-modal-body {
  padding: var(--spacing-lg);
}

.cookie-category {
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.cookie-category:last-child {
  border-bottom: none;
}

.cookie-category-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.cookie-category-title {
  font-weight: 600;
  color: var(--color-dark);
}

.cookie-category-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.cookie-toggle {
  position: relative;
  width: 50px;
  height: 26px;
}

.cookie-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.cookie-toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-border);
  border-radius: 26px;
  transition: var(--transition-fast);
}

.cookie-toggle-slider::before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: var(--color-white);
  border-radius: 50%;
  transition: var(--transition-fast);
}

.cookie-toggle input:checked + .cookie-toggle-slider {
  background-color: var(--color-accent);
}

.cookie-toggle input:checked + .cookie-toggle-slider::before {
  transform: translateX(24px);
}

.cookie-toggle input:disabled + .cookie-toggle-slider {
  opacity: 0.5;
  cursor: not-allowed;
}

.cookie-modal-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

@media (max-width: 480px) {
  .cookie-modal-footer {
    flex-direction: column;
  }
  
  .cookie-modal-footer .cookie-btn {
    width: 100%;
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
  
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

*:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 10000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}