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

body {
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  margin: 0;
  background: #f8fafc;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 40px 20px;
}

.matrix-wrapper {
  width: 100%;
  max-width: 900px;
  background: #ffffff;
  border-radius: 20px;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.1);
  overflow-x: auto; /* Handles mobile scrolling safely */
  border: 1px solid #e2e8f0;
}

.matrix-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr 1fr;
  min-width: 700px;
}

.matrix-header {
  position: sticky;
  top: 0;
  background: #ffffff;
  padding: 30px 20px;
  text-align: center;
  border-bottom: 2px solid #e2e8f0;
  z-index: 10;
}

.empty-cell {
  background: transparent;
  border-bottom: 2px solid #e2e8f0;
}

.matrix-header h3 {
  margin: 0 0 8px 0;
  font-size: 1.5rem;
  color: #0f172a;
}

.matrix-header p {
  margin: 0;
  color: #64748b;
  font-weight: 500;
}

.pro-header {
  background: #f0fdf4;
  border-top: 4px solid #10b981;
  position: relative;
}

.popular-badge {
  position: absolute;
  top: 5px;
  left: 50%;
  transform: translateX(-50%);
  background: #10b981;
  color: #ffffff;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.50rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.feature-name {
  padding: 20px;
  font-weight: 600;
  color: #334155;
  border-bottom: 1px solid #f1f5f9;
  display: flex;
  align-items: center;
}

.feature-value {
  padding: 20px;
  text-align: center;
  border-bottom: 1px solid #f1f5f9;
  color: #0f172a;
  font-weight: 500;
  display: flex;
  justify-content: center;
  align-items: center;
}

.pro-value {
  background: #f0fdf4;
}

.check-mark {
  color: #10b981;
  font-weight: 800;
  font-size: 1.25rem;
}

.text-muted {
  color: #cbd5e1;
}

.btn-basic, .btn-pro {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-basic {
  background: #f1f5f9;
  color: #475569;
  border: 1px solid #e2e8f0;
}

.btn-basic:hover { background: #e2e8f0; }

.btn-pro {
  background: #10b981;
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
}

.btn-pro:hover { background: #059669; }