/* Base styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

/* Improve focus visibility for accessibility */
*:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

:root {
  --color-bg: #fafbfc;
  --color-surface: #ffffff;
  --color-surface-alt: #f4f6f8;
  --color-border: #e7eaee;
  --color-text: #1a202c;
  --color-text-soft: #4a5568;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-muted: #718096;
  --color-elev-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.025);
  --spacing-unit: 1rem;
  --border-radius: 0.75rem;
}
html.theme-dark {
  --color-bg: #0f1419;
  --color-surface: #1a1f2e;
  --color-surface-alt: #252d3d;
  --color-border: #2d3748;
  --color-text: #e2e8f0;
  --color-text-soft: #a0aec0;
  --color-accent: #4299e1;
  --color-accent-hover: #3182ce;
  --color-muted: #718096;
  --color-elev-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

@media (prefers-color-scheme: dark) {
  html:not(.theme-light) {
    --color-bg: #0f1419;
    --color-surface: #1a1f2e;
    --color-surface-alt: #252d3d;
    --color-border: #2d3748;
    --color-text: #e2e8f0;
    --color-text-soft: #a0aec0;
    --color-accent: #4299e1;
    --color-accent-hover: #3182ce;
    --color-muted: #718096;
    --color-elev-shadow: 0 2px 8px rgba(0,0,0,0.3);
  }
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #0f172a;
  color: #ffffff;
  padding: 0.5rem 1rem;
  z-index: 10000;
  border-radius: 0 0 .5rem 0;
  text-decoration: none;
  font-size: 0.875rem;
  transition: top .2s ease;
}
.skip-link:focus {
  top: 0;
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

/* Container */
.container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background-color: var(--color-accent);
  width: 0%;
  z-index: 1000;
  transition: width 0.15s ease-out;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 999;
  transition: background 0.2s ease;
}
html.theme-dark .site-header {
  background: rgba(15, 20, 25, 0.92);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
  position: relative;
}
.logo {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  z-index: 1001;
  transition: color 0.2s ease;
}
.logo:hover {
  color: var(--color-accent);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 2rem;
  height: 2rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  z-index: 1001;
}
.hamburger-line {
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}
.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav a {
  color: var(--color-text-soft);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}
.nav a:hover {
  color: var(--color-text);
}
.nav .nav-cta {
  background-color: var(--color-accent);
  color: #ffffff;
  padding: 0.5rem 1.1rem;
  border-radius: var(--border-radius);
  transition: all 0.2s ease;
  font-weight: 500;
}
.nav .nav-cta:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

/* Theme toggle button */
.theme-toggle {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text-soft);
  padding: 0.45rem 0.85rem;
  border-radius: var(--border-radius);
  font-size: 0.85rem;
  cursor: pointer;
  display: inline-flex;
  gap: 0.35rem;
  align-items: center;
  transition: all 0.2s ease;
}
.theme-toggle:hover { 
  color: var(--color-text);
  background: var(--color-surface);
  border-color: var(--color-accent);
}
.theme-toggle:focus { 
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  outline: none;
  text-align: center;
}
.btn.primary {
  background-color: var(--color-accent);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.15);
}
.btn.primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}
.btn.secondary {
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
  background-color: var(--color-surface);
}
.btn.secondary:hover {
  background-color: var(--color-surface-alt);
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

/* Hero section */
.hero {
  position: relative;
  padding-top: 4rem;
  padding-bottom: 4rem;
  overflow: hidden;
  background-color: var(--color-surface);
}
.hero-background {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.4;
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
}
.blob-1 {
  top: -60px;
  left: -100px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle at 30% 30%, rgba(96, 165, 250, 0.3), transparent);
}
.blob-2 {
  bottom: -100px;
  right: -80px;
  width: 440px;
  height: 440px;
  background: radial-gradient(circle at 70% 70%, rgba(167, 139, 250, 0.25), transparent);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}
.hero-title {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  line-height: 1.2;
  margin-bottom: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
}
.hero-desc {
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  color: var(--color-text-soft);
  margin-bottom: 2rem;
  line-height: 1.6;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}
.hero-subtext { 
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-bottom: 1rem;
}
.logos-section {
  margin-top: 3rem;
}
.logos-title {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 1rem;
  font-weight: 500;
}
.logos-wrapper {
  overflow: hidden;
}
.logos-track {
  display: flex;
  gap: 1.5rem;
  white-space: nowrap;
  animation: marquee 30s linear infinite;
}
.logos-track span {
  background-color: var(--color-surface-alt);
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: 0.85rem;
  color: var(--color-text-soft);
  font-weight: 500;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Highlights */
.highlights { 
  background-color: var(--color-bg);
  padding: 5rem 0;
}
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}
.card {
  position: relative;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 2rem 1.75rem;
  box-shadow: var(--color-elev-shadow);
  transition: all 0.3s ease;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border-color: var(--color-accent);
}
.card-icon {
  margin-bottom: 1rem;
}
.icon-circle {
  display: inline-flex;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.65rem;
  background-color: var(--color-surface-alt);
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}
.card-title { 
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--color-text);
  line-height: 1.4;
}
.card-desc { 
  font-size: 0.9rem;
  color: var(--color-text-soft);
  line-height: 1.6;
}

/* Section title */
.section-title { 
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  margin-bottom: 2rem;
  color: var(--color-text);
  line-height: 1.3;
}

/* Steps */
.how { 
  background-color: var(--color-surface);
  padding: 5rem 0;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}
.step-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 2rem 1.75rem;
  box-shadow: var(--color-elev-shadow);
  transition: all 0.3s ease;
}
.step-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border-color: var(--color-accent);
}
.step-number {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
}
.step-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--color-text);
  line-height: 1.4;
}
.step-desc {
  font-size: 0.9rem;
  color: var(--color-text-soft);
  line-height: 1.6;
}

/* Products */
.products { 
  background-color: var(--color-bg);
  padding: 5rem 0;
}
.products-grid .card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--color-accent);
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
}
.products-grid .card-link:hover {
  color: var(--color-accent-hover);
}
.products-grid .card-link span {
  transition: transform 0.2s ease;
}
.products-grid .card-link:hover span {
  transform: translateX(4px);
}

/* Principles */
.principles { 
  background-color: var(--color-surface);
  padding: 5rem 0;
}
.principles-header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}
.principles-subtext {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.5;
}

/* Trust */
.trust { 
  background-color: var(--color-bg);
  padding: 5rem 0;
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}
.trust-card { 
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 2rem 1.75rem;
  box-shadow: var(--color-elev-shadow);
  transition: all 0.3s ease;
}
.trust-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border-color: var(--color-accent);
}
.trust-title { 
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-text);
}
.trust-list { 
  list-style: none;
  padding-left: 0;
  color: var(--color-text-soft);
  font-size: 0.9rem;
  line-height: 1.8;
}
.trust-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
}
.trust-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 600;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.stat-item { 
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 1.25rem 1rem;
  text-align: center;
}
.stat-value { 
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.stat-label { 
  font-size: 0.75rem;
  color: var(--color-muted);
  line-height: 1.4;
}

/* Contact */
.contact { 
  background-color: var(--color-surface);
  padding: 5rem 0;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 3rem;
  align-items: start;
}
.contact-desc { 
  font-size: 0.95rem;
  color: var(--color-text-soft);
  margin-top: 1rem;
  line-height: 1.6;
}
.contact-sub { 
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 1.25rem;
}

/* Additional contact options */
.contact-options {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.contact-options .btn {
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
}
.contact-form { 
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--color-elev-shadow);
}
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}
.form-field {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.25rem;
}
.form-field label { 
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}
.req {
  color: #dc2626;
  margin-left: 0.25rem;
}
.form-field input,
.form-field textarea { 
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-surface);
  color: var(--color-text);
  transition: all 0.2s ease;
  font-family: inherit;
}
.form-field input:focus,
.form-field textarea:focus { 
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  border-color: var(--color-accent);
}
.form-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.5rem;
}
.form-status { 
  font-size: 0.875rem;
  color: var(--color-text);
}

/* Footer */
.site-footer { 
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
  padding: 2.5rem 0;
}
.footer-inner { 
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}
.footer-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer-links a { 
  color: var(--color-text-soft);
  text-decoration: none;
  transition: color 0.2s ease;
  font-weight: 500;
}
.footer-links a:hover { 
  color: var(--color-accent);
}

/* Consent banner */
.consent-banner {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  left: 1rem;
  max-width: 420px;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  padding: 1.25rem;
  font-size: 0.85rem;
  z-index: 11000;
}
@media (min-width: 640px) {
  .consent-banner {
    left: auto;
    margin: 0;
  }
}
.consent-inner { 
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.consent-text { 
  margin: 0;
  line-height: 1.5;
  color: var(--color-text-soft);
  font-size: 0.85rem;
}
.consent-actions { 
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.consent-actions .btn { 
  font-size: 0.8rem;
  padding: 0.5rem 1rem;
}
.consent-close { 
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
  color: var(--color-muted);
  transition: color 0.2s ease;
}
.consent-close:hover { 
  color: var(--color-text);
}
.consent-banner[hidden] { 
  display: none;
}

/* Media queries */
@media (max-width: 767px) {
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav {
    position: fixed;
    top: 3.5rem;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    padding: 1.5rem 1rem;
    gap: 1rem;
    align-items: stretch;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
  }
  
  .nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  
  .nav a {
    padding: 0.75rem 1rem;
    text-align: center;
    border-radius: var(--border-radius);
    background: var(--color-surface-alt);
  }
  
  .nav .nav-cta {
    width: 100%;
    text-align: center;
  }
  
  .theme-toggle {
    width: 100%;
    justify-content: center;
  }
  
  .hero {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .steps-grid {
    grid-template-columns: 1fr;
  }
  
  .trust-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .highlights,
  .how,
  .products,
  .principles,
  .trust,
  .contact {
    padding: 3rem 0;
  }
  
  .card,
  .step-card,
  .trust-card {
    padding: 1.5rem;
  }
  
  .contact-form {
    padding: 1.5rem;
  }
}

@media (min-width: 768px) {
  .header-inner {
    height: 4rem;
  }
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
  .contact-options {
    flex-direction: row;
  }
}

@media (min-width: 1024px) {
  .container {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}