/* 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;
  --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 32px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Features */
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.2s;
}
.feature-card:hover { border-color: var(--accent); }
.feature-icon { font-size: 2rem; margin-bottom: 12px; }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.feature-card p { color: var(--muted); font-size: 0.95rem; }

/* Cards (form) */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}
.card-header {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--muted);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-hint { font-size: 0.75rem; color: var(--muted); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

/* Color input row */
.color-input-row { display: flex; gap: 8px; align-items: center; }
.color-input-row input[type="color"] {
  width: 48px; height: 36px; border: 1px solid var(--border);
  border-radius: 6px; padding: 2px; cursor: pointer; background: var(--bg);
}
.color-input-row input[type="text"] { flex: 1; }

/* Preview area */
.preview-label {
  font-size: 0.85rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

/* Status / toast */
.status { margin-top: 12px; padding: 10px 16px; border-radius: var(--radius); font-size: 0.875rem; }
.status.loading { background: var(--surface); color: var(--accent); }
.status.error { background: #fef2f2; color: #ef4444; }
.status.success { background: #f0fdf4; color: var(--success); }

/* Footer */
.footer { padding: 40px 0; border-top: 1px solid var(--border); margin-top: 60px; }
.footer p { color: var(--muted); font-size: 0.875rem; text-align: center; }

/* Comparison table */
.comparison-table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.9rem; }
.comparison-table th, .comparison-table td { padding: 0.75rem; text-align: left; border-bottom: 1px solid var(--border); }
.comparison-table th { background: var(--surface); font-weight: 600; }
.comparison-table tr:nth-child(even) { background: var(--surface); }
.highlight-col { color: var(--accent); font-weight: 600; }
.check { color: var(--success); }
.cross { color: #ef4444; }

/* Optional tag */
.optional-tag { font-size: 0.7rem; color: var(--muted); font-weight: 400; }