:root {
    --bg-dark: #0f1115;
    --bg-card: #181b21;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --accent-amber: #F58F29;
    --accent-amber-hover: #d9771e;
    --accent-gold: #D4AF37;
    --border-subtle: rgba(255, 255, 255, 0.08);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, .logo {
    font-family: 'Oswald', sans-serif;
    text-transform: uppercase;
}

a {
    text-decoration: none;
    transition: all 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.text-center { text-align: center; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.align-center { align-items: center; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    font-weight: 600;
    border-radius: 4px;
    font-family: 'Oswald', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-amber), #e65c00);
    color: #fff;
    border: none;
    box-shadow: 0 4px 15px rgba(245, 143, 41, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 143, 41, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--text-muted);
}

.btn-outline {
    background: transparent;
    color: var(--accent-amber);
    border: 1px solid var(--accent-amber);
}

.btn-outline:hover {
    background: rgba(245, 143, 41, 0.1);
}

.btn-large {
    padding: 1.2rem 3rem;
    font-size: 1.2rem;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: rgba(15, 17, 21, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-subtle);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 2px;
}

.logo span {
    color: var(--accent-amber);
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(245, 143, 41, 0.1);
    color: var(--accent-amber);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 1px solid rgba(245, 143, 41, 0.2);
}

.hero h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #fff, var(--text-muted));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 90%;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
}

.book-mockup {
    width: 320px;
    height: 480px;
    background: #111;
    border-radius: 8px 16px 16px 8px;
    box-shadow: 
        inset 4px 0 10px rgba(0,0,0,0.5),
        20px 20px 30px rgba(0,0,0,0.8),
        -1px 0 1px rgba(255,255,255,0.2);
    position: relative;
    transform: perspective(1000px) rotateY(-15deg);
    transition: transform 0.5s ease;
    border-left: 12px solid #222;
}

.book-mockup:hover {
    transform: perspective(1000px) rotateY(-5deg) scale(1.02);
}

.book-cover {
    padding: 4rem 2rem;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.05);
    height: 100%;
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.book-cover h2 {
    color: var(--accent-amber);
    font-size: 2.5rem;
    letter-spacing: 4px;
    margin-bottom: 0.5rem;
}

.book-cover p {
    color: #888;
    letter-spacing: 2px;
    font-size: 0.9rem;
}

.book-cover .edition {
    margin-top: auto;
    font-family: 'Oswald', sans-serif;
    color: #444;
}

.floating-alert {
    position: absolute;
    bottom: 20px;
    right: -20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-subtle);
    font-weight: 500;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

/* Problem/Solution */
.problem-solution {
    padding: 6rem 0;
    background: #0a0c0f;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.problem, .solution {
    padding: 3rem;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-subtle);
    transition: transform 0.3s ease;
}

.problem:hover, .solution:hover {
    transform: translateY(-5px);
}

.problem h3 { color: #ef4444; font-size: 2rem; margin-bottom: 1rem; }
.solution h3 { color: #10b981; font-size: 2rem; margin-bottom: 1rem; }
.problem p, .solution p { color: var(--text-muted); font-size: 1.1rem; }

/* Features Showcase */
.features-showcase {
    padding: 8rem 0;
}

.features-showcase h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 4rem auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-subtle);
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(245, 143, 41, 0.3);
}

.feature-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #fff;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Audience */
.audience {
    padding: 6rem 0;
    background: linear-gradient(180deg, #0f1115 0%, #1a1511 100%);
}

.audience h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.audience p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.check-list {
    list-style: none;
}

.check-list li {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.glass-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    position: relative;
}

.glass-card::before {
    content: '"';
    position: absolute;
    top: 10px;
    left: 20px;
    font-size: 6rem;
    color: rgba(245, 143, 41, 0.2);
    font-family: serif;
}

.quote {
    font-size: 1.2rem;
    font-style: italic;
    color: var(--text-main);
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.author {
    color: var(--accent-amber);
    font-weight: 600;
    font-family: 'Oswald', sans-serif;
    letter-spacing: 1px;
}

/* CTA Section */
.cta-section {
    padding: 8rem 0;
    background: url('data:image/svg+xml;utf8,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="%230f1115"/><circle cx="50" cy="50" r="1" fill="%23ffffff" fill-opacity="0.1"/></svg>');
}

.cta-section h2 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.cta-section p {
    color: var(--text-muted);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 3rem auto;
}

.guarantee {
    margin-top: 2rem !important;
    font-size: 0.9rem !important;
}

footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 900px) {
    .grid-2, .hero {
        grid-template-columns: 1fr;
    }
    .hero h1 { font-size: 3rem; }
    .hero-image { margin-top: 3rem; }
    .problem-solution .grid-2 { gap: 2rem; }
}