:root {
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-primary-light: #818cf8;
  --color-accent: #f472b6;
  --color-success: #10b981;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-bg: #fafbfc;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

.gradient-bg {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 100vh;
  background: 
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(99, 102, 241, 0.15), transparent),
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(244, 114, 182, 0.1), transparent),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(129, 140, 248, 0.08), transparent);
  pointer-events: none;
  z-index: -1;
}

.header {
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text);
}

.logo-icon {
  font-size: 1.75rem;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.hero {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 5rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.1); }
}

.headline {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

.highlight {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subheadline {
  font-size: 1.25rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 540px;
  margin: 0 auto 2rem;
}

.features-preview {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

.feature-icon {
  font-size: 1rem;
}

.signup-form {
  max-width: 480px;
  margin: 0 auto 2rem;
}

.form-group {
  display: flex;
  gap: 0.75rem;
  background: var(--color-surface);
  padding: 0.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.form-group input {
  flex: 1;
  padding: 1rem 1.25rem;
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text);
  outline: none;
  min-width: 0;
}

.form-group input::placeholder {
  color: var(--color-text-light);
}

.form-group button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 1.75rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  white-space: nowrap;
  min-height: 52px;
}

.form-group button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

.form-group button:active {
  transform: translateY(0);
}

.form-group button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-loader {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.form-hint {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.success-message {
  padding: 2.5rem;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  max-width: 480px;
  margin: 0 auto 2rem;
}

.success-message[hidden] {
  display: none;
}

.success-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.success-message h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.success-message p {
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.position-text {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.position-text strong {
  color: var(--color-primary);
}

.social-proof {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.avatars {
  display: flex;
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 0.875rem;
  border: 2px solid var(--color-bg);
  margin-left: -8px;
}

.avatar:first-child {
  margin-left: 0;
}

.social-proof p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.social-proof strong {
  color: var(--color-text);
}

.benefits {
  max-width: 960px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 2.5rem;
  color: var(--color-text);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.benefit-card {
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.benefit-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

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

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

.footer {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--color-text-light);
  font-size: 0.875rem;
}

@media (max-width: 640px) {
  .header {
    padding: 1rem 1.25rem;
  }

  .main {
    padding: 1.5rem 1.25rem 3rem;
  }

  .hero {
    margin-bottom: 4rem;
  }

  .badge {
    font-size: 0.8125rem;
    padding: 0.4rem 0.875rem;
  }

  .subheadline {
    font-size: 1.1rem;
  }

  .features-preview {
    flex-direction: column;
    align-items: center;
  }

  .form-group {
    flex-direction: column;
    padding: 0.75rem;
  }

  .form-group input {
    padding: 0.875rem 1rem;
  }

  .form-group button {
    width: 100%;
    padding: 1rem;
  }

  .success-message {
    padding: 2rem 1.5rem;
  }

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

  .benefit-card {
    padding: 1.5rem;
  }
}

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