:root {
  --primary: #1d4ed8;
  --secondary: #f59e0b;
  --bg: #f9fafb;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #6b7280;
  --success: #10b981;
  --error: #ef4444;
  --border: #e5e7eb;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --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);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Roboto", sans-serif;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Poppins", sans-serif;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: all 0.3s ease;
}

.header.scrolled {
  background: var(--card);
  box-shadow: var(--shadow-md);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  min-height: 70px;
}

.logo {
  color: var(--primary);
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-link {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--text);
  margin: 3px 0;
  transition: 0.3s;
  border-radius: 2px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
  font-size: 0.9rem;
  line-height: 1.4;
  text-align: center;
}

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

.btn-primary:hover {
  background: #1e40af;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

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

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}

.hero-bg::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(29, 78, 216, 0.8), rgba(245, 158, 11, 0.3));
  z-index: 1;
}

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

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: white;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Sections */
section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: 2.5rem;
  color: var(--text);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto;
}

/* Services */
.services {
  background: var(--card);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.service-card {
  background: var(--card);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  border: 1px solid var(--border);
  text-align: center;
}

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

.service-icon {
  color: var(--primary);
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
}

.service-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.service-description {
  color: var(--muted);
  line-height: 1.6;
}

/* Tracking */
.tracking {
  background: linear-gradient(135deg, var(--primary) 0%, #1e40af 100%);
  color: white;
}

.tracking .section-title,
.tracking .section-subtitle {
  color: white;
}

.tracking-form {
  max-width: 600px;
  margin: 0 auto 3rem;
}

.form-group {
  position: relative;
  display: flex;
  gap: 1rem;
  align-items: end;
}

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

.form-input {
  flex: 1;
  padding: 0.875rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: white;
  color: var(--text);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.1);
}

.tracking-result {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  padding: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.timeline {
  margin-top: 2rem;
}

.timeline-item {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
  position: relative;
}

.timeline-item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 17px;
  top: 35px;
  width: 2px;
  height: 30px;
  background: rgba(255, 255, 255, 0.3);
}

.timeline-item.active::after {
  background: var(--secondary);
}

.timeline-icon {
  width: 35px;
  height: 35px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1rem;
  flex-shrink: 0;
}

.timeline-item.active .timeline-icon {
  background: var(--secondary);
}

.timeline-content h5 {
  margin-bottom: 0.25rem;
  font-size: 1rem;
}

.timeline-content p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
}

/* Pricing */
.pricing-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.calculator {
  background: var(--card);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow);
}

.calculator-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.calculator-form .form-group {
  display: block;
}

.calculator-form .form-label {
  color: var(--text);
}

.calculator-result {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--bg);
  border-radius: 8px;
}

.tariff-details {
  margin-top: 1rem;
}

.tariff-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.tariff-item.total {
  font-weight: 600;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
  margin-top: 1rem;
}

.tariff-value {
  font-weight: 500;
}

.pricing-table {
  background: var(--card);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow);
}

.pricing-table table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.pricing-table th,
.pricing-table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.pricing-table th {
  background: var(--bg);
  font-weight: 600;
  color: var(--text);
}

/* About */
.about {
  background: var(--card);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-image img {
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}

.about-text .section-title {
  text-align: left;
  margin-bottom: 1.5rem;
}

.about-text p {
  color: var(--muted);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.highlights {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.highlight-icon {
  color: var(--primary);
  background: rgba(29, 78, 216, 0.1);
  padding: 0.75rem;
  border-radius: 8px;
  flex-shrink: 0;
}

.highlight-item h4 {
  margin-bottom: 0.5rem;
  color: var(--text);
}

.highlight-item p {
  color: var(--muted);
  margin: 0;
}

/* Testimonials */
.testimonials {
  background: var(--bg);
  position: relative;
}

.testimonial-carousel {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.testimonial-slide {
  display: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.testimonial-slide.active {
  display: block;
  opacity: 1;
}

.testimonial-content {
  background: var(--card);
  padding: 3rem 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.testimonial-rating {
  margin-bottom: 1.5rem;
}

.star {
  color: var(--secondary);
  font-size: 1.25rem;
  margin: 0 0.1rem;
}

.testimonial-text {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 2rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.author-photo {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
}

.author-info {
  text-align: left;
}

.author-name {
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text);
}

.author-title {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

.carousel-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.carousel-btn {
  background: var(--primary);
  color: white;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.25rem;
  transition: all 0.3s ease;
}

.carousel-btn:hover {
  background: #1e40af;
  transform: scale(1.1);
}

/* FAQ */
.faq {
  background: var(--card);
}

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

.faq-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.5rem;
  text-align: left;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.3s ease;
}

.faq-question:hover {
  background: var(--bg);
}

.faq-question[aria-expanded="true"] {
  background: var(--bg);
}

.faq-icon {
  transition: transform 0.3s ease;
  color: var(--primary);
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.active {
  max-height: 200px;
  padding: 0 1.5rem 1.5rem;
}

.faq-answer p {
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}

/* Contact */
.contact {
  background: var(--bg);
}

.contact-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-form {
  background: var(--card);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.contact-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-form .form-group {
  display: block;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-error {
  display: block;
  color: var(--error);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon {
  color: var(--primary);
  background: rgba(29, 78, 216, 0.1);
  padding: 1rem;
  border-radius: 8px;
  flex-shrink: 0;
}

.contact-item h4 {
  margin-bottom: 0.5rem;
  color: var(--text);
}

.contact-item p {
  color: var(--muted);
  margin: 0;
  line-height: 1.5;
}

/* Footer */
.footer {
  background: var(--text);
  color: white;
  padding: 3rem 0 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-title {
  color: white;
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.footer-section p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

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

.social-link {
  color: rgba(255, 255, 255, 0.8);
  transition: all 0.3s ease;
  padding: 0.5rem;
  border-radius: 8px;
}

.social-link:hover {
  color: var(--primary);
  background: rgba(255, 255, 255, 0.1);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: var(--card);
  border-radius: 12px;
  max-width: 500px;
  width: 90%;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
}

.modal-header h4 {
  margin: 0;
  color: var(--text);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--muted);
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.modal-close:hover {
  background: var(--bg);
  color: var(--text);
}

.modal-body {
  padding: 2rem;
}

.modal-body p {
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}

.modal-footer {
  padding: 1.5rem 2rem;
  text-align: center;
}

/* Animation */
[data-aos] {
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
  opacity: 1;
}

[data-aos="fade-up"] {
  transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
  transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--card);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 2rem;
    transition: left 0.3s ease;
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 2.5rem;
  }

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

  .hero-actions .btn {
    width: 200px;
  }

  .section-title {
    font-size: 2rem;
  }

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

  .pricing-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .contact-form .form-row {
    grid-template-columns: 1fr;
  }

  .calculator-form .form-row {
    grid-template-columns: 1fr;
  }

  .pricing-table {
    overflow-x: auto;
  }

  .pricing-table table {
    min-width: 500px;
  }

  .testimonial-content {
    padding: 2rem 1.5rem;
  }

  .testimonial-author {
    flex-direction: column;
    text-align: center;
  }

  .author-info {
    text-align: center;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .social-links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .service-card,
  .calculator,
  .pricing-table,
  .contact-form {
    padding: 1.5rem;
  }

  .testimonial-content {
    padding: 1.5rem 1rem;
  }

  .form-group {
    flex-direction: column;
    align-items: stretch;
  }

  .form-group .btn {
    margin-top: 1rem;
  }
}

/* Performance optimizations */
.hero-image {
  will-change: transform;
}

.service-card,
.btn {
  will-change: transform;
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Focus styles for keyboard navigation */
.btn:focus,
.form-input:focus,
.nav-link:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.faq-question:focus {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border: #000000;
    --muted: #333333;
  }
}

/* Print styles */
@media print {
  .header,
  .hero,
  .footer,
  .modal {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .service-card,
  .calculator,
  .contact-form {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}