/* Shared styles — dark mode, responsive, no payment CTAs */
:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --border: #2a2d3a;
  --text: #e4e6f0;
  --muted: #8b8fa3;
  --accent: #6366f1;
  --accent-hover: #4f52d9;
  --success: #22c55e;
  --danger: #ef4444;
  --radius: 8px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; }

/* Layout */
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
section { padding: 60px 0; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }
.text-center { text-align: center; }
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* Nav */
.navbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar .logo { font-size: 1.2rem; font-weight: 700; color: var(--text); }
.navbar .logo span { color: var(--accent); }
.nav-links { display: flex; gap: 24px; list-style: none; }
.nav-links a { color: var(--muted); font-size: 0.95rem; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}
.btn:hover { transform: translateY(-1px); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 8px 16px; font-size: 0.875rem; }

/* Hero */
.hero { padding: 100px 0 80px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 800; line-height: 1.2; margin-bottom: 20px; }
.hero h1 span { color: var(--accent); }
.hero p { font-size: 1.15rem; color: var(--muted); max-width: 600px; margin: 0 auto 24px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 24px; }
.benefit-stack { max-width: 600px; margin: 0 auto 16px; }
.trust-row { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; margin-top: 24px; }
.trust-item { color: var(--muted); font-size: 0.9rem; }
.trust-item .icon { color: var(--success); margin-right: 4px; }

/* Cards */
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s;
}
.feature-card:hover { border-color: var(--accent); }
.feature-icon { font-size: 2rem; margin-bottom: 12px; }
.feature-card h3 { margin-bottom: 8px; font-size: 1.1rem; }
.feature-card p { color: var(--muted); font-size: 0.95rem; }

/* Comparison table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.95rem;
}
.comparison-table th, .comparison-table td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  text-align: left;
}
.comparison-table th { background: var(--surface); font-weight: 600; }
.comparison-table .highlight-col { background: rgba(99,102,241,0.1); }
.check { color: var(--success); }
.cross { color: var(--danger); }

/* Badge */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}
.badge-success { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-accent { background: rgba(99,102,241,0.15); color: var(--accent); }
.badge-danger { background: rgba(239,68,68,0.15); color: var(--danger); }

/* App layout */
.app-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 768px) {
  .app-layout { grid-template-columns: 1fr; }
  .hero { padding: 60px 0 40px; }
  .hero h1 { font-size: 1.8rem; }
}

/* Sidebar / preview */
.sidebar { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.preview-area { background: #fff; color: #111; border-radius: var(--radius); padding: 32px; font-family: 'Times New Roman', serif; white-space: pre-wrap; line-height: 1.8; min-height: 300px; }
.preview-area pre { margin: 0; font-family: 'Courier New', monospace; font-size: 0.9rem; }

/* Form */
.form-section { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; }
.form-section h2 { font-size: 1.2rem; margin-bottom: 20px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.95rem; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg); color: var(--text); font-size: 1rem; font-family: var(--font);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.2);
}
.form-group textarea { min-height: 80px; resize: vertical; }

/* Watermark */
.watermark { color: var(--muted); font-size: 0.8rem; margin-top: 12px; font-style: italic; text-align: center; }

/* Footer */
.footer { padding: 32px 0; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.9rem; text-align: center; }

/* FAQ */
.faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.faq-item h3 { font-size: 1.05rem; margin-bottom: 8px; }
.faq-item p { color: var(--muted); font-size: 0.95rem; }

/* Print */
@media print {
  body { background: #fff !important; color: #000 !important; }
  nav, .no-print, .watermark, footer, .action-buttons, .form-section { display: none !important; }
  .preview-area { border: none; padding: 0; }
  .app-layout { grid-template-columns: 1fr; }
}