:root {
  --bg-color: #f8f9fa;
  --text-color: #212529;
  --container-bg: #ffffff;
  --input-bg: #ffffff;
  --input-border: #ced4da;
  --input-text: #212529;
  --accent-color: #007bff;
  --accent-hover: #0056b3;
  --button-text: #ffffff;
  --header-bg: #ffffff;
  --shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  --hero-gradient: linear-gradient(135deg, #007bff 0%, #00d4ff 100%);
  --step-num-bg: rgba(0, 123, 255, 0.1);
}

[data-theme="dark"] {
  --bg-color: #0f111a;
  --text-color: #e9ecef;
  --container-bg: #1a1c23;
  --input-bg: #252836;
  --input-border: #3f4458;
  --input-text: #ffffff;
  --accent-color: #4da3ff;
  --accent-hover: #1a8cff;
  --button-text: #ffffff;
  --header-bg: #1a1c23;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  --hero-gradient: linear-gradient(135deg, #1a237e 0%, #007bff 100%);
  --step-num-bg: rgba(77, 163, 255, 0.1);
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  transition: background-color 0.3s, color 0.3s;
  margin: 0;
  line-height: 1.6;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

/* Scroll Progress Bar */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 4px;
  background: var(--accent-color);
  z-index: 2000;
  transition: width 0.1s ease-out;
}

/* Scroll Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

header {
  padding: 1rem 5%;
  background-color: var(--header-bg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background-color 0.3s;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-color);
  letter-spacing: -0.5px;
}

.desktop-nav {
  display: flex;
  gap: 2rem;
}

.desktop-nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.3s;
}

.desktop-nav a:hover {
  color: var(--accent-color);
}

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

/* Mobile Menu Toggle */
#mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 2000;
}

#mobile-menu-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--text-color);
  transition: all 0.3s;
}

#mobile-menu-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

#mobile-menu-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Nav Overlay */
#mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--header-bg);
  z-index: 1500;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateX(100%);
  transition: transform 0.3s ease-in-out;
}

#mobile-nav-overlay.active {
  transform: translateX(0);
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.mobile-nav a {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-color);
}

main {
  display: flex;
  flex-direction: column;
}

/* Hero Section */
#hero {
  padding: 8rem 5% 6rem;
  background: var(--hero-gradient);
  color: #ffffff;
  text-align: center;
  clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
  position: relative;
  overflow: hidden;
}

#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.hero-content p {
  font-size: 1.25rem;
  margin-bottom: 3rem;
  opacity: 0.9;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.cta-btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  background-color: #ffffff;
  color: #007bff;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1.1rem;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
  background-color: #f8f9fa;
}

/* Stats Section */
#stats {
  padding: 4rem 5%;
  background-color: var(--container-bg);
  text-align: center;
  margin-top: -2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent-color);
}

.plus {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-color);
}

.stat-item p {
  font-weight: 600;
  opacity: 0.8;
  margin-top: 0.5rem;
}

/* Services Section */
#services {
  padding: 6rem 5%;
  background-color: rgba(0,0,0,0.01);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.service-card {
  background-color: var(--container-bg);
  padding: 3rem 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: all 0.3s;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.service-image {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
}

.service-card h3 {
  margin-bottom: 1rem;
  color: var(--accent-color);
}

/* Team Section */
#team {
  padding: 6rem 5%;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.team-card {
  background-color: var(--container-bg);
  padding: 3rem 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: all 0.3s;
}

.team-card:hover {
  transform: translateY(-10px);
}

.member-image {
  width: 100px;
  height: 100px;
  background-color: var(--step-num-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  margin: 0 auto 1.5rem;
}

.team-card h3 {
  margin-bottom: 0.25rem;
}

.team-card .role {
  color: var(--accent-color);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.team-card .desc {
  font-size: 0.85rem;
  opacity: 0.7;
}

/* Partners Section */
#partners {
  padding: 6rem 5%;
  text-align: center;
}

.partners-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
  opacity: 0.6;
}

.logo-item {
  font-weight: 900;
  font-size: 1.25rem;
  letter-spacing: 2px;
  padding: 1rem;
  border: 2px solid var(--input-border);
  border-radius: 8px;
  transition: all 0.3s;
}

.logo-item:hover {
  opacity: 1;
  color: var(--accent-color);
  border-color: var(--accent-color);
  transform: scale(1.05);
}

/* Features Section */
#features {
  padding: 6rem 5%;
  text-align: center;
}

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

.underline {
  width: 60px;
  height: 4px;
  background: var(--accent-color);
  margin: 1rem auto;
  border-radius: 2px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background-color: var(--container-bg);
  padding: 3rem 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-10px);
}

.feature-card .icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  margin-bottom: 1rem;
  color: var(--accent-color);
}

/* Process Section */
#process {
  padding: 6rem 5%;
  background-color: rgba(0,0,0,0.02);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  background-color: var(--step-num-bg);
  color: var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  margin: 0 auto 1.5rem;
  transition: all 0.3s;
}

/* Testimonials Section */
#testimonials {
  padding: 6rem 5%;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.testimonial-card {
  background-color: var(--container-bg);
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: var(--shadow);
  border-left: 5px solid var(--accent-color);
}

.quote {
  font-style: italic;
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.user-info strong {
  display: block;
  color: var(--accent-color);
}

.user-info span {
  font-size: 0.85rem;
  opacity: 0.7;
}

/* FAQ Section */
#faq {
  padding: 6rem 5%;
  background-color: rgba(0,0,0,0.02);
}

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

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

.faq-question {
  width: 100%;
  padding: 1.5rem 0;
  background: none;
  border: none;
  color: var(--text-color);
  text-align: left;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.faq-answer p {
  padding-bottom: 1.5rem;
  margin: 0;
  opacity: 0.8;
}

.faq-item.active .faq-answer {
  max-height: 200px;
}

.faq-item.active .arrow {
  transform: rotate(180deg);
}

.arrow {
  font-size: 0.8rem;
  transition: transform 0.3s;
}

/* Comments Section */
#comments {
  padding: 6rem 5%;
}

.comments-container {
  max-width: 1000px;
  margin: 0 auto;
  background-color: var(--container-bg);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow);
}

/* Contact Section */
#contact-section {
  padding: 7rem 5%;
  background-color: rgba(0,0,0,0.02);
  display: flex;
  justify-content: center;
}

.contact-container {
  background-color: var(--container-bg);
  padding: 2.5rem;
  border: 1px solid var(--input-border);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
  width: 100%;
  max-width: 550px;
}

.contact-container h2 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  line-height: 1.25;
}

.contact-container p {
  margin: 0 0 2rem;
  color: var(--text-color);
  opacity: 0.72;
}

.contact-container form {
  display: grid;
  gap: 1.25rem;
}

.form-group {
  display: grid;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid var(--input-border);
  border-radius: 8px;
  background-color: var(--input-bg);
  color: var(--input-text);
  font: inherit;
  transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s;
}

.form-group input {
  min-height: 48px;
  padding: 0.85rem 1rem;
}

.form-group textarea {
  min-height: 150px;
  padding: 0.95rem 1rem;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--input-text);
  opacity: 0.42;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--step-num-bg);
  outline: none;
}

.submit-btn {
  width: 100%;
  min-height: 50px;
  margin-top: 0.25rem;
  border: none;
  border-radius: 8px;
  background-color: var(--accent-color);
  color: var(--button-text);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.submit-btn:hover {
  background-color: var(--accent-hover);
  box-shadow: 0 8px 18px rgba(0, 123, 255, 0.22);
  transform: translateY(-1px);
}

.submit-btn:focus-visible {
  outline: 3px solid var(--step-num-bg);
  outline-offset: 3px;
}

.submit-btn:disabled {
  cursor: not-allowed;
  opacity: 0.65;
  transform: none;
}

#form-status {
  margin-top: 1rem;
  text-align: center;
  font-weight: 600;
  padding: 1rem;
  border-radius: 8px;
  display: none;
}

#form-status.success {
  display: block;
  background-color: rgba(40, 167, 69, 0.1);
  color: #28a745;
}

#form-status.error {
  display: block;
  background-color: rgba(220, 53, 69, 0.1);
  color: #dc3545;
}

/* Floating Action Button & Scroll to Top */
#fab, #scroll-to-top {
  position: fixed;
  right: 30px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  z-index: 999;
  transition: all 0.3s;
  opacity: 0;
  visibility: hidden;
}

#fab {
  bottom: 30px;
  background-color: var(--accent-color);
  color: #ffffff;
}

#scroll-to-top {
  bottom: 100px;
  background-color: var(--container-bg);
  color: var(--accent-color);
  border: 2px solid var(--accent-color);
  cursor: pointer;
}

#fab.show, #scroll-to-top.show {
  opacity: 1;
  visibility: visible;
}

#fab:hover, #scroll-to-top:hover {
  transform: scale(1.1);
}

/* Footer */
footer {
  background-color: var(--container-bg);
  padding: 4rem 5% 2rem;
  border-top: 1px solid var(--input-border);
  transition: background-color 0.3s;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-brand .logo {
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  opacity: 0.7;
  margin-bottom: 1.5rem;
}

.newsletter h5 {
  margin-bottom: 1rem;
  font-size: 1rem;
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
}

.newsletter-form input {
  flex: 1;
  padding: 0.6rem;
  border: 1px solid var(--input-border);
  border-radius: 4px;
  background-color: var(--input-bg);
  color: var(--input-text);
}

.newsletter-form button {
  padding: 0.6rem 1rem;
  background-color: var(--accent-color);
  color: #ffffff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.newsletter-form button:hover {
  background-color: var(--accent-hover);
}

.footer-links h4, .footer-social h4 {
  margin-bottom: 1.5rem;
}

.footer-links a, .footer-social a {
  display: block;
  text-decoration: none;
  color: var(--text-color);
  opacity: 0.7;
  margin-bottom: 0.75rem;
  transition: all 0.3s;
}

.footer-links a:hover, .footer-social a:hover {
  opacity: 1;
  color: var(--accent-color);
}

.social-icons {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.footer-bottom {
  text-align: center;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--input-border);
  opacity: 0.5;
  font-size: 0.85rem;
}

#theme-toggle {
  background-color: transparent;
  border: 2px solid var(--accent-color);
  color: var(--accent-color);
  padding: 0.6rem 1.2rem;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 700;
  transition: all 0.3s;
}

#theme-toggle:hover {
  background-color: var(--accent-color);
  color: #ffffff;
}

@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2.5rem;
  }
  .desktop-nav {
    display: none;
  }
  #mobile-menu-toggle {
    display: flex;
  }
  .newsletter-form {
    flex-direction: column;
  }
  #fab {
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
  }
  #scroll-to-top {
    bottom: 80px;
    right: 20px;
    width: 50px;
    height: 50px;
  }
  #contact-section {
    padding: 4rem 1rem;
  }
  .contact-container {
    padding: 1.5rem;
  }
}