/* Reset & Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --secondary: #10b981;
  --secondary-dark: #059669;
  --accent: #8b5cf6;
  --accent-dark: #7c3aed;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #ffffff;
  --bg-light: #f9fafb;
  --bg-dark: #111827;
  --border: #e5e7eb;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-lg: rgba(0, 0, 0, 0.15);
}

html,
body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

@supports (overflow: clip) {
  html,
  body {
    overflow-x: clip;
  }
}

/* Prevent horizontal overflow from long tokens/media */
img,
svg,
video,
canvas {
  max-width: 100%;
  height: auto;
}

pre,
code {
  max-width: 100%;
  overflow-x: auto;
}

p,
h1,
h2,
h3,
h4,
li,
a,
span {
  overflow-wrap: anywhere;
  word-break: break-word;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  font-size: 16px;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  z-index: 1000;
  box-shadow: 0 2px 4px var(--shadow);
}

.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.navbar-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-logo:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.navbar-logo svg {
  width: 24px;
  height: 24px;
  fill: var(--primary);
}

.navbar-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
  list-style: none;
}

.navbar-links a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
  padding: 0.5rem 0;
}

.navbar-links a:hover,
.navbar-links a:focus {
  color: var(--primary);
  outline: none;
}

.navbar-links a:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.navbar-links .nav-discrete {
  color: var(--text-light);
  font-size: 0.875rem;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 4rem 1.5rem;
  text-align: center;
}

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

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  opacity: 0.95;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.2s;
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
}

.btn:focus {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-lg);
}

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

.btn-secondary:hover {
  background: var(--secondary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: white;
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
}

.btn-sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
}

/* Sections */
.section {
  padding: 4rem 1.5rem;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text);
}

.section-subtitle {
  font-size: 1.125rem;
  text-align: center;
  color: var(--text-light);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s;
  box-shadow: 0 2px 4px var(--shadow);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px var(--shadow-lg);
  border-color: var(--primary);
}

.feature-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  fill: var(--primary);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Steps */
.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.step {
  text-align: center;
  padding: 1.5rem;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.step h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.step p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Security Section */
.security-section {
  background: var(--bg-light);
}

.security-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.security-content p {
  color: var(--text-light);
  font-size: 1.125rem;
  line-height: 1.8;
}

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

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
}

.faq-item:first-child {
  padding-top: 0;
}

.faq-question {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.faq-answer {
  color: var(--text-light);
  line-height: 1.7;
}

/* Footer */
.footer {
  background: var(--bg-dark);
  color: white;
  padding: 3rem 1.5rem 1.5rem;
  margin-top: 4rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-company {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-links a:hover,
.footer-links a:focus {
  color: white;
  outline: none;
}

.footer-links a:focus {
  outline: 2px solid white;
  outline-offset: 2px;
  border-radius: 4px;
}

.footer-copyright {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Chat Embed Styles */
.chat-embed {
  position: relative;
  width: 100%;
  max-width: 100%;
  margin: 2rem auto 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 16px var(--shadow-lg);
  background: var(--bg);
  border: 1px solid var(--border);
}

.chat-iframe {
  width: 100%;
  height: 600px;
  border: none;
  display: block;
  background: var(--bg);
}

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

.chat-fallback {
  padding: 2rem;
  text-align: center;
  background: var(--bg-light);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.chat-fallback p {
  margin-bottom: 1rem;
  color: var(--text-light);
  font-size: 0.9375rem;
}

.chat-fallback .btn {
  margin-top: 0.5rem;
}

.chat-fallback .btn:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

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

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

  .navbar-container {
    flex-direction: column;
    gap: 1rem;
  }

  .navbar-links {
    justify-content: center;
    gap: 1rem;
  }

  .hero-cta,
  .hero-cta-secondary {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

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

  .steps-container {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 2.5rem 1.5rem;
  }

  .chat-iframe {
    height: 70vh;
    min-height: 400px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 2.5rem 1rem;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .section-title {
    font-size: 1.75rem;
  }
}

/* Language switcher (global) */
.lang-switch {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  padding: 4px;
  gap: 4px;
  backdrop-filter: blur(8px);
}

.lang-switch__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--text, #1f2937);
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
}

.lang-switch__link.is-active {
  background: #101828;
  color: #fff;
}