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

:root {
  --primary-color: #000000;
  --primary-dark: #1a1a1a;
  --secondary-color: #333333;
  --accent-color: #666666;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;

  --bg-primary: #000000;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2d2d2d;
  --bg-card: #333333;

  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --text-muted: #999999;

  --border-color: #404040;
  --border-light: #666666;

  --font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: "Montserrat", sans-serif;
}

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

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(15, 15, 35, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  padding: 1rem 0;
}

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

.nav-status {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-auth {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-login,
.btn-register {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.875rem;
}

.btn-login {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
}

.btn-login:hover {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--accent-color);
}

.btn-register {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
}

.btn-register:hover {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--accent-color);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: opacity 0.2s ease;
}

.nav-logo:hover {
  opacity: 0.8;
}

.nav-logo i {
  color: var(--text-primary);
  font-size: 1.5rem;
}

.nav-logo img {
  width: 24px;
  height: 24px;
  margin-right: 8px;
  filter: invert(1);
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.status-badge i {
  color: var(--warning-color);
}

/* Hero Section */
.hero {
  padding: 8rem 0 4rem;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.hero-badge i {
  color: var(--accent-color);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  border-radius: var(--radius-lg);
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

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

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.code-window {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 500px;
}

.window-header {
  background: var(--bg-tertiary);
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.window-controls {
  display: flex;
  gap: 0.5rem;
}

.control {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.control.red {
  background: var(--error-color);
}
.control.yellow {
  background: var(--warning-color);
}
.control.green {
  background: var(--success-color);
}

.window-title {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.code-content {
  padding: 1.5rem;
}

.code-line {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.code-line:last-child {
  border-bottom: none;
}

.time {
  color: var(--accent-color);
  font-family: "Monaco", "Menlo", monospace;
  font-size: 0.875rem;
  min-width: 3rem;
}

.action {
  flex: 1;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.code-line i {
  font-size: 1rem;
}

.success {
  color: var(--success-color);
}
.pending {
  color: var(--warning-color);
}

/* How It Works */
.how-it-works {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

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

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto;
}

.workflow-steps {
  display: grid;
  gap: 3rem;
}

.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2rem;
  align-items: start;
}

.step-icon {
  width: 4rem;
  height: 4rem;
  background: var(--primary-color);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.step-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.step-features {
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.step-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.step-features i {
  color: var(--success-color);
  font-size: 0.75rem;
}

/* Benefits */
.benefits {
  padding: 6rem 0;
  background: var(--bg-primary);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.benefit-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 2rem;
  text-align: center;
  transition: all 0.2s ease;
}

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

.benefit-icon {
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 1.25rem;
  color: white;
}

.benefit-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

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

/* Experimental */
.experimental {
  padding: 4rem 0;
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.experimental-content {
  display: flex;
  align-items: center;
  gap: 2rem;
  text-align: center;
  justify-content: center;
}

.experimental-icon {
  width: 4rem;
  height: 4rem;
  background: var(--warning-color);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  flex-shrink: 0;
}

.experimental-text h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.experimental-text p {
  color: var(--text-secondary);
  max-width: 600px;
}

/* CTA */
.cta {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.cta-content p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.cta-form {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.cta-form input {
  flex: 1;
  padding: 0.875rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: 1rem;
}

.cta-form input::placeholder {
  color: var(--text-muted);
}

.cta-form input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.cta-note {
  color: var(--text-muted);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

/* Footer */
.footer {
  padding: 3rem 0;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 600;
  transition: opacity 0.2s ease;
}

.footer-logo:hover {
  opacity: 0.8;
}

.footer-logo i {
  color: var(--text-primary);
  font-size: 1.25rem;
}

.footer-logo img {
  width: 24px;
  height: 24px;
  margin-right: 8px;
  filter: invert(1);
}

.footer-text p {
  color: var(--text-muted);
}

.footer-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.status-indicator {
  width: 8px;
  height: 8px;
  background: var(--warning-color);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  .hero {
    padding: 6rem 0 4rem;
  }

  .hero-content {
    text-align: center;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

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

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

  .experimental-content {
    flex-direction: column;
    text-align: center;
  }

  .cta-form {
    max-width: 100%;
    gap: 0.5rem;
  }

  .cta-form input {
    font-size: 0.9rem;
    padding: 0.75rem 0.875rem;
  }

  .cta-form button {
    font-size: 0.9rem;
    padding: 0.75rem 1rem;
    white-space: nowrap;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .section-header h2 {
    font-size: 2rem;
  }

  .cta-content h2 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .hero {
    padding: 6rem 0 3rem;
  }

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

  .hero-subtitle {
    font-size: 1.125rem;
  }

  .nav-container {
    padding: 0 1rem;
  }

  .nav-logo span {
    display: none;
  }
}