:root {
    --bg: #050a12;
    --surface: #0d1520;
    --primary: #ffffff;
    --accent: #1155ff; 
    --success: #10b981;
    --text-secondary: #94a3b8;
    --gradient: linear-gradient(135deg, #1155ff 0%, #00d2ff 100%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body { 
    font-family: 'Plus Jakarta Sans', sans-serif; 
    background: var(--bg); 
    color: var(--primary); 
    overflow-x: hidden; 
    line-height: 1.6; 
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

header { padding: 50px 0; text-align: center; }
.logo { max-width: 200px; height: auto; }

.hero { padding: 40px 0 80px; text-align: center; background: radial-gradient(circle at top, #112244 0%, transparent 70%); }
h1 { font-size: 3.5rem; font-weight: 800; line-height: 1.1; margin-bottom: 24px; letter-spacing: -2px; }
h1 span { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.ebook-container { margin: 50px auto; max-width: 320px; position: relative; }
.ebook-img { width: 100%; border-radius: 8px; box-shadow: 0 30px 60px rgba(0,0,0,0.8); border: 1px solid rgba(255,255,255,0.1); }
.badge-pages { position: absolute; bottom: -15px; right: -30px; background: var(--accent); padding: 12px 22px; border-radius: 12px; font-weight: 800; font-size: 0.9rem; box-shadow: 0 10px 20px rgba(0,0,0,0.4); z-index: 10; }

.ia-section { padding: 100px 0; background: var(--surface); text-align: center; border-radius: 50px 50px 0 0; }
.robo-icon { max-width: 120px; margin-bottom: 30px; filter: drop-shadow(0 0 15px var(--accent)); }
.ia-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-top: 50px; }
.ia-card { background: var(--bg); padding: 40px; border-radius: 24px; border: 1px solid rgba(17, 85, 255, 0.2); transition: 0.3s; }
.ia-card h3 { color: #4cc9f0; margin-bottom: 15px; font-size: 1.5rem; }

.content-section { padding: 100px 0; background: var(--bg); }
.content-headline { text-align: center; font-size: 2.5rem; font-weight: 800; margin-bottom: 60px; }
.chapters-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.chapter-box { background: var(--surface); padding: 25px; border-radius: 15px; border: 1px solid rgba(255,255,255,0.03); }
.chapter-box h4 { color: var(--accent); margin-bottom: 10px; font-size: 1.1rem; text-transform: uppercase; }
.chapter-box p { font-size: 0.9rem; color: var(--text-secondary); }

.testimonials { padding: 100px 0; background: var(--surface); }
.t-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 32px; margin-top: 50px; }
.t-card { background: var(--bg); padding: 40px; border-radius: 24px; border: 1px solid rgba(255,255,255,0.05); }
.salary-badge { display: inline-block; padding: 6px 12px; background: rgba(16, 185, 129, 0.1); color: var(--success); border-radius: 8px; font-weight: 700; margin-top: 20px; font-size: 0.9rem; }

.offer-headline { padding: 100px 20px; text-align: center; background: linear-gradient(135deg, #112244 0%, #050a12 100%); border-radius: 40px; margin: 80px 0; border: 1px solid rgba(255,255,255,0.1); }
.price-tag { margin: 40px 0; }
.old-price { text-decoration: line-through; opacity: 0.4; font-size: 1.5rem; margin-right: 20px; }
.new-price { font-size: 4.5rem; font-weight: 800; color: var(--success); display: block; line-height: 1; }

.cta-btn { 
    display: inline-block; 
    padding: 25px 60px; 
    background: var(--accent); 
    color: white; 
    text-decoration: none; 
    border-radius: 15px; 
    font-weight: 800; 
    font-size: 1.5rem; 
    transition: 0.3s; 
    box-shadow: 0 20px 40px rgba(17, 85, 255, 0.4); 
    border: none;
}
.cta-btn:hover { transform: translateY(-5px); filter: brightness(1.1); }

footer { padding: 80px 0; text-align: center; border-top: 1px solid rgba(255,255,255,0.05); }

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .new-price { font-size: 3rem; }
    .badge-pages { right: 0; }
}
.fase-selector {
    padding: 40px 0;
    background: #0f172a; /* Fundo levemente diferente para destaque */
}

.fase-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.fase-card h3 {
    margin-bottom: 25px;
    font-size: 1.5rem;
    color: #fff;
}

.options-container {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.option-item {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid transparent;
    border-radius: 12px;
    padding: 20px;
    flex: 1;
    min-width: 280px;
    cursor: pointer;
    display: flex;
    align-items: flex-start;
    text-align: left;
    transition: all 0.3s ease;
}

.option-item:hover {
    background: rgba(255, 255, 255, 0.08);
}

.option-item input {
    display: none;
}

.custom-radio {
    height: 20px;
    width: 20px;
    border: 2px solid #64748b;
    border-radius: 50%;
    margin-right: 15px;
    margin-top: 3px;
    position: relative;
    flex-shrink: 0;
}

.option-item input:checked + .custom-radio {
    border-color: #00ff88; /* Cor de destaque/sucesso */
}

.option-item input:checked + .custom-radio::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: #00ff88;
    border-radius: 50%;
}

.option-text strong {
    display: block;
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 5px;
}

.option-text p {
    font-size: 0.9rem;
    color: #94a3b8;
    margin: 0;
}

.feedback-msg {
    margin-top: 20px;
    font-weight: 700;
    min-height: 24px;
    transition: all 0.5s ease;
}

.msg-alerta { color: #ffbd44; }
.msg-sucesso { color: #00ff88; }