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

:root {
  --color-primary: #1a1a1a;
  --color-secondary: #4a5568;
  --color-accent: #2c5282;
  --color-background: #fafaf9;
  --color-surface: #ffffff;
  --color-border: #e5e5e0;
  --color-success: #059669;
  --font-display: "Playfair Display", serif;
  --font-body: "Inter", sans-serif;

  /* Touch target sizes */
  --touch-target: 3rem; /* 48px minimum for mobile */
  --transition-fast: 0.2s;
  --transition-base: 0.3s;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-background);
  color: var(--color-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

/* Accessibility: Skip to main content link */
.skip-link {
  position: absolute;
  top: -9999px;
  left: -9999px;
  z-index: 999;
  padding: 1rem;
  background-color: var(--color-primary);
  color: white;
  text-decoration: none;
  border-radius: 0 0 4px 0;
}

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

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  padding: 1rem;
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1rem;
}

/* Logo responsive sizing */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-text {
  font-size: clamp(1rem, 4vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.logo-icon {
  width: clamp(28px, 8vw, 32px);
  height: clamp(28px, 8vw, 32px);
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  border-radius: 6px;
  flex-shrink: 0;
}

/* Mobile hamburger menu button */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  align-items: center;
  justify-content: center;
  width: var(--touch-target);
  height: var(--touch-target);
  border-radius: 8px;
  transition: background-color var(--transition-fast);
}

.nav-toggle:hover,
.nav-toggle:focus {
  background-color: var(--color-background);
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.hamburger {
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: all var(--transition-fast);
  border-radius: 2px;
}

/* Hamburger menu animation when open */
.nav-toggle[aria-expanded="true"] .hamburger:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle[aria-expanded="true"] .hamburger:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .hamburger:nth-child(3) {
  transform: rotate(-45deg) translate(8px, -8px);
}

/* Responsive navigation menu */
.nav-wrapper {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.nav-wrapper[data-open="true"] {
  display: block;
}

.nav-links {
  display: flex;
  flex-direction: column;
  gap: 0;
  list-style: none;
  padding: 1rem;
  align-items: center;
}

.nav-links li {
  border-bottom: 1px solid var(--color-border);
}

.nav-links li:last-child {
  border-bottom: none;
}

.nav-links a {
  display: block;
  padding: 1rem;
  color: var(--color-secondary);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  min-height: var(--touch-target);
  display: flex;
  align-items: center;
}

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

.nav-links .login-btn {
  background-color: var(--color-primary);
  color: white !important;
  border-radius: 8px;
  margin-top: 0.5rem;
  justify-content: center;
  min-height: 3rem;
}

.nav-links .login-btn:hover,
.nav-links .login-btn:focus {
  background-color: #000;
}

/* Desktop navigation layout */
@media (min-width: 769px) {
  .nav-toggle {
    display: none;
  }

  .nav-wrapper {
    display: block !important;
    position: static;
    background-color: transparent;
    border: none;
    box-shadow: none;
  }

  .nav-links {
    flex-direction: row;
    gap: 2rem;
    padding: 0;
  }

  .nav-links li {
    border-bottom: none;
  }

  .nav-links a {
    padding: 0;
    font-size: 0.9375rem;
    min-height: auto;
  }

  .nav-links a:hover,
  .nav-links a:focus {
    background-color: transparent;
    color: var(--color-primary);
  }

  .nav-links .login-btn {
    padding: 0.5rem 1rem;
    margin-top: 0;
  }
}

/* Hero Section */
.hero {
  padding: clamp(7rem, 12vw, 10rem) clamp(1rem, 5vw, 2rem) clamp(4rem, 8vw, 6rem);
  max-width: 1400px;
  margin: 0 auto;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.announcement-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  font-size: clamp(0.75rem, 2vw, 0.875rem);
  color: var(--color-secondary);
  margin-bottom: clamp(1rem, 4vw, 2rem);
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-success);
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 8vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-primary);
  margin-bottom: clamp(1rem, 4vw, 1.5rem);
  letter-spacing: -0.02em;
}

.hero-description {
  font-size: clamp(0.95rem, 3vw, 1.25rem);
  color: var(--color-secondary);
  line-height: 1.6;
  margin-bottom: clamp(2rem, 6vw, 3rem);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: clamp(0.875rem, 2vw, 1rem) clamp(1.5rem, 4vw, 2rem);
  font-size: clamp(0.9rem, 2vw, 1rem);
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: all var(--transition-base);
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  min-height: var(--touch-target);
  min-width: clamp(140px, 100%, 200px);
}

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

@media (min-width: 769px) {
  .btn {
    min-width: auto;
  }
}

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

.btn-primary:hover {
  background-color: #000;
}

@media (hover: hover) {
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  }
}

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

.btn-secondary:hover {
  border-color: var(--color-primary);
  background-color: var(--color-surface);
}

/* Features Section */
.features {
  padding: clamp(4rem, 8vw, 6rem) clamp(1rem, 5vw, 2rem);
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.section-label {
  font-size: clamp(0.75rem, 2vw, 0.875rem);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 6vw, 3rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2rem);
}

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

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: clamp(1.75rem, 4vw, 2.5rem);
  transition: all var(--transition-base);
}

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

@media (hover: hover) {
  .feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary);
  }
}

.feature-icon {
  width: clamp(48px, 10vw, 56px);
  height: clamp(48px, 10vw, 56px);
  background: linear-gradient(135deg, #f0f0f0, #e0e0e0);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: clamp(1rem, 3vw, 1.5rem);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  flex-shrink: 0;
}

.feature-title {
  font-size: clamp(1rem, 3vw, 1.25rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.feature-description {
  color: var(--color-secondary);
  line-height: 1.6;
  font-size: clamp(0.9rem, 2vw, 0.9375rem);
}

/* Trust Section */
.trust-section {
  padding: clamp(3rem, 8vw, 4rem) clamp(1rem, 5vw, 2rem);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.trust-content {
  max-width: 1400px;
  margin: 0 auto;
  text-align: center;
}

.trust-description {
  color: var(--color-secondary);
  max-width: 600px;
  margin: clamp(0.75rem, 3vw, 1rem) auto 0;
  font-size: clamp(0.9rem, 2vw, 1rem);
}

.trust-badges {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: clamp(1.5rem, 4vw, 2rem);
}

@media (min-width: 768px) {
  .trust-badges {
    grid-template-columns: repeat(4, 1fr);
  }
}

.trust-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
}

.trust-icon {
  width: clamp(44px, 10vw, 48px);
  height: clamp(44px, 10vw, 48px);
  background-color: var(--color-background);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  flex-shrink: 0;
}

.trust-label {
  font-size: clamp(0.8rem, 2vw, 0.875rem);
  font-weight: 600;
  color: var(--color-primary);
}

/* Footer */
.footer {
  padding: clamp(2rem, 4vw, 3rem) clamp(1rem, 5vw, 2rem);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  color: var(--color-secondary);
  font-size: clamp(0.75rem, 2vw, 0.875rem);
}

.footer-content p {
  margin-bottom: 0.5rem;
}

.footer-content p:last-child {
  margin-bottom: 0;
}

/* Large desktop optimization */
@media (min-width: 1440px) {
  .header-content {
    padding: 0;
  }
}