:root {
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --primary: #3b82f6; /* Azul Vibrante */
    --accent: #eab308; /* Dourado */
    --text-light: #f8fafc;
    --text-dim: #94a3b8;
    --success: #22c55e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

h1, h2, h3, h4, .btn-cta {
    font-family: 'Montserrat', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* HERO SECTION */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    background: radial-gradient(circle at top right, #1e293b 0%, #0f172a 100%);
    position: relative;
    overflow: hidden;
}

/* Background detail */
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(0,0,0,0) 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    z-index: 1;
    gap: 50px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.tag-premium {
    background: rgba(234, 179, 8, 0.15);
    color: var(--accent);
    padding: 8px 16px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: 1px solid rgba(234, 179, 8, 0.3);
    display: inline-block;
    margin-bottom: 25px;
}

h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 20px;
}

.text-gradient {
    background: linear-gradient(90deg, #60a5fa, #ffffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.highlight {
    color: var(--accent);
}

.subheadline {
    color: var(--text-dim);
    font-size: 1.25rem;
    margin-bottom: 40px;
}

/* CTA BUTTON */
.btn-cta {
    background: linear-gradient(135deg, var(--accent) 0%, #ca8a04 100%);
    color: #000;
    padding: 20px 40px;
    border-radius: 12px;
    font-weight: 800;
    text-decoration: none;
    font-size: 1.1rem;
    display: inline-block;
    transition: all 0.3s ease;
    box-shadow: 0 10px 25px -5px rgba(234, 179, 8, 0.4);
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 30px -10px rgba(234, 179, 8, 0.5);
}

.cta-group {
    display: flex;
    align-items: center;
    gap: 20px;
}

.security-lock {
    font-size: 0.9rem;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 3D BOOK MOCKUP CSS */
.book-container {
    perspective: 1000px;
    display: flex;
    justify-content: center;
    padding: 50px;
}

.book {
    width: 300px;
    height: 450px;
    position: relative;
    transform-style: preserve-3d;
    transform: rotateY(-30deg);
    transition: transform 1s ease;
    box-shadow: 10px 10px 30px rgba(0,0,0,0.5);
}

.book:hover {
    transform: rotateY(-10deg);
}

.front, .left-side {
    position: absolute;
    width: 100%;
    height: 100%;
}

.front {
    background: linear-gradient(135deg, #1e40af 0%, #172554 100%);
    transform: translateZ(25px);
    border-radius: 5px 10px 10px 5px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    border: 2px solid rgba(255,255,255,0.1);
    padding: 20px;
}

.cover h3 { font-size: 4rem; line-height: 0.9; margin: 20px 0; color: white; }
.cover .author { color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: 2px; }
.cover .subtitle { font-size: 1.5rem; color: #93c5fd; display: block; font-weight: 300; }
.logo-mini { font-size: 3rem; margin-top: 40px; }

.left-side {
    width: 50px;
    left: -25px;
    background: #1e3a8a;
    transform: rotateY(-90deg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.left-side h2 {
    color: rgba(255,255,255,0.5);
    transform: rotate(-90deg);
    white-space: nowrap;
    font-size: 1.5rem;
}

/* PAIN SECTION */
.pain {
    padding: 100px 0;
    background: var(--bg-dark);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h3 { font-size: 2.5rem; margin-bottom: 15px; }
.alert-text { color: #ef4444; }

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card-pain {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.05);
    transition: transform 0.3s ease;
}

.card-pain:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.icon-box {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.card-pain h4 { font-size: 1.5rem; margin-bottom: 10px; }
.card-pain p { color: var(--text-dim); }

/* MODULES */
.modules {
    padding: 100px 0;
    background: #1e293b;
}

.check-list { list-style: none; margin-top: 30px; }
.check-list li {
    font-size: 1.2rem;
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
}
.check-list i { color: var(--success); margin-top: 5px; }

/* OFFER */
.offer {
    padding: 100px 0;
    background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
}

.offer-card {
    background: white;
    color: #0f172a;
    max-width: 550px;
    margin: 0 auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

.offer-header {
    background: var(--primary);
    color: white;
    padding: 30px;
    text-align: center;
}

.badge {
    background: var(--accent);
    color: #000;
    padding: 5px 10px;
    border-radius: 4px;
    font-weight: 800;
    font-size: 0.8rem;
}

.offer-body { padding: 40px; text-align: center; }

.pricing {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 5px;
    margin: 20px 0;
    color: var(--bg-dark);
}

.currency { font-size: 1.5rem; margin-top: 10px; font-weight: 600; }
.amount { font-size: 5rem; font-weight: 800; line-height: 1; }
.old-price { color: #64748b; text-decoration: line-through; font-weight: 600; }

.bonus-list { list-style: none; margin: 30px 0; text-align: left; margin-left: 20%; }
.bonus-list li { margin-bottom: 10px; font-weight: 500; }

.btn-large { width: 100%; text-align: center; font-size: 1.3rem; }

.guarantee-box {
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 0.9rem;
    color: #475569;
}

/* ANIMATIONS */
@keyframes fadeInRight { from { opacity: 0; transform: translateX(50px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fadeInLeft { from { opacity: 0; transform: translateX(-50px); } to { opacity: 1; transform: translateX(0); } }

.fade-in-left { animation: fadeInLeft 1s ease-out; }
.fade-in-right { animation: fadeInRight 1s ease-out; }

.pulse { animation: pulse 2s infinite; }
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(234, 179, 8, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(234, 179, 8, 0); }
    100% { box-shadow: 0 0 0 0 rgba(234, 179, 8, 0); }
}

/* RESPONSIVE */
@media (max-width: 900px) {
    .hero-container { flex-direction: column; text-align: center; }
    .hero h1 { font-size: 2.5rem; }
    .cta-group { justify-content: center; flex-direction: column; }
    .book { width: 200px; height: 300px; }
    .cover h3 { font-size: 3rem; }
}