:root {
  --bg-dark: #050507;
  --bg-card: #111118;
  --bg-alt: #0d0d12;
  --primary: #7c3aed;
  --secondary: #3b82f6;
  --success: #10b981;
  --error: #ef4444;
  --text-main: #ffffff;
  --text-dim: #a1a1aa;
  --gradient: linear-gradient(135deg, #7c3aed, #3b82f6);
  --transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

/* BASE */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; }
body { background-color: var(--bg-dark); color: var(--text-main); line-height: 1.6; }

/* HEADER */
header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.2rem 8%; position: fixed; width: 100%; top: 0;
  background: rgba(5, 5, 7, 0.8); backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05); z-index: 1000;
}

header h1 { font-size: 1.25rem; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.btn-back {
  text-decoration: none; color: var(--text-dim); padding: 8px 18px;
  border-radius: 10px; font-size: 14px; border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition);
}
.btn-back:hover { border-color: var(--primary); color: var(--text-main); background: rgba(124, 58, 237, 0.1); }

/* HERO */
.hero {
  padding: 160px 8% 80px; text-align: center;
  background: radial-gradient(circle at 50% 0%, rgba(124, 58, 237, 0.1), transparent 50%);
}

.badge {
  background: rgba(124, 58, 237, 0.1); color: var(--primary);
  padding: 6px 16px; border-radius: 30px; font-size: 12px;
  font-weight: 800; text-transform: uppercase; letter-spacing: 2px;
  border: 1px solid rgba(124, 58, 237, 0.2);
}

.hero h2 { font-size: clamp(2.5rem, 6vw, 4rem); margin: 1.5rem 0; letter-spacing: -2px; }
.hero p { color: var(--text-dim); max-width: 700px; margin: 0 auto; font-size: 1.1rem; }

/* GRID & CARDS */
.content-section { padding: 80px 8%; }
.alt-bg { background-color: var(--bg-alt); }
.section-title { text-align: center; margin-bottom: 3.5rem; font-size: 2.2rem; letter-spacing: -1px; }

.grid-container {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 2rem;
}

.card {
  background: var(--bg-card); padding: 2.5rem; border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.03); transition: var(--transition);
}
.card:hover { transform: translateY(-10px); border-color: var(--primary); box-shadow: 0 20px 40px -20px rgba(0,0,0,0.5); }
.card h3 { margin-bottom: 1rem; font-size: 1.4rem; }
.card p { color: var(--text-dim); font-size: 0.95rem; }

/* COMPARAÇÃO LADO A LADO */
.comparison-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem; max-width: 1000px; margin: 0 auto;
}

.comparison-card {
  padding: 2.5rem; border-radius: 24px; border: 1px solid rgba(255, 255, 255, 0.05);
}

.comparison-card h3 { margin-bottom: 1.5rem; font-size: 1.5rem; }

.comparison-card ul { list-style: none; }
.comparison-card li { 
  margin-bottom: 12px; padding-left: 28px; position: relative; color: var(--text-dim); 
}

.negative { background: rgba(239, 68, 68, 0.02); border-color: rgba(239, 68, 68, 0.1); }
.negative h3 { color: var(--error); }
.negative li::before { content: "✕"; position: absolute; left: 0; color: var(--error); font-weight: bold; }

.positive { background: rgba(16, 185, 129, 0.02); border-color: rgba(16, 185, 129, 0.1); }
.positive h3 { color: var(--success); }
.positive li::before { content: "✓"; position: absolute; left: 0; color: var(--success); font-weight: bold; }

/* CONCLUSÃO */
.highlight-card {
  background: var(--gradient); padding: 5rem 2rem; border-radius: 32px;
  text-align: center; color: white; margin-top: 4rem;
}
.highlight-card h3 { font-size: 2rem; margin-bottom: 1.5rem; }
.highlight-card p { font-size: 1.2rem; max-width: 600px; margin: 0 auto; opacity: 0.9; }

/* FOOTER */
footer { padding: 4rem; text-align: center; color: var(--text-dim); font-size: 0.9rem; border-top: 1px solid rgba(255,255,255,0.05); }

@media (max-width: 768px) {
  .hero { padding-top: 120px; }
  .content-section { padding: 60px 5%; }
}