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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary: #64748b;
  --dark: #0f172a;
  --gray-900: #1e293b;
  --gray-700: #334155;
  --gray-500: #64748b;
  --gray-300: #cbd5e1;
  --gray-100: #f1f5f9;
  --white: #ffffff;
  --success: #10b981;
  --warning: #f59e0b;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--gray-900);
  line-height: 1.6;
  background: var(--white);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  line-height: 1.2;
  color: var(--dark);
}

h1 { font-size: 3rem; font-weight: 700; }
h2 { font-size: 2.25rem; font-weight: 600; }
h3 { font-size: 1.25rem; font-weight: 600; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
}

.btn-secondary:hover {
  background: var(--gray-300);
}

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

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

.btn-disabled {
  background: var(--gray-300);
  color: var(--gray-500);
  cursor: not-allowed;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.125rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-100);
  z-index: 1000;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
}

.logo-icon {
  color: var(--primary);
  font-size: 1.75rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav a:not(.btn) {
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav a:not(.btn):hover {
  color: var(--primary);
}

/* Hero */
.hero {
  padding: 160px 0 100px;
  text-align: center;
  background: linear-gradient(180deg, var(--gray-100) 0%, var(--white) 100%);
}

.hero h1 {
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--gray-500);
  max-width: 640px;
  margin: 0 auto 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Features */
.features {
  padding: 100px 0;
}

.features h2,
.tools h2,
.contact h2 {
  text-align: center;
  margin-bottom: 16px;
}

.section-subtitle {
  text-align: center;
  color: var(--gray-500);
  font-size: 1.125rem;
  margin-bottom: 60px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}

.feature-card {
  padding: 32px;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: 12px;
  transition: all 0.2s ease;
}

.feature-card:hover {
  border-color: var(--primary-light);
  box-shadow: 0 4px 24px rgba(37, 99, 235, 0.1);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--gray-500);
}

/* Tools */
.tools {
  padding: 100px 0;
  background: var(--gray-100);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.tool-card {
  padding: 32px;
  background: var(--white);
  border-radius: 12px;
  border: 1px solid var(--gray-300);
  transition: all 0.2s ease;
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

.tool-coming-soon {
  opacity: 0.75;
}

.tool-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.tool-icon {
  font-size: 2rem;
}

.tool-badge {
  padding: 4px 12px;
  background: var(--success);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 100px;
  text-transform: uppercase;
}

.badge-soon {
  background: var(--warning);
}

.tool-card h3 {
  margin-bottom: 12px;
}

.tool-card p {
  color: var(--gray-500);
  margin-bottom: 24px;
}

/* Contact */
.contact {
  padding: 100px 0;
  text-align: center;
}

.contact-content {
  max-width: 480px;
  margin: 0 auto;
}

.contact-content p {
  color: var(--gray-500);
  margin-bottom: 24px;
}

/* Footer */
.footer {
  background: var(--dark);
  color: var(--gray-300);
  padding: 60px 0 24px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--gray-700);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--white);
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  color: var(--gray-300);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  padding-top: 24px;
  text-align: center;
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }

  .header .container {
    height: 60px;
    padding: 0 16px;
  }

  .logo {
    font-size: 1.125rem;
    gap: 6px;
  }

  .logo-icon {
    font-size: 1.25rem;
  }

  .nav {
    gap: 16px;
  }

  .nav a:not(.btn) {
    display: none;
  }

  .nav .btn {
    padding: 8px 16px;
    font-size: 0.875rem;
  }

  .hero {
    padding: 100px 0 60px;
  }

  .features, .tools, .contact {
    padding: 60px 0;
  }

  .footer-content {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }
}