:root {
    --bg-deep-space: #0D0E1B;
    --bg-nebula: #1A1C2D;
    --surface: #262A40;
    --primary: #00BFFF;
    --primary-glow: rgba(0, 191, 255, 0.3);
    --secondary: #9398C6;
    --text-primary: #E0E1FF;
    --border: #3A3F64;
}

/* --- Base & Animations --- */
body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg-deep-space);
    color: var(--text-primary);
    margin: 0;
    line-height: 1.7;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.section {
    padding: 100px 20px;
    position: relative;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 15px;
}

.section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.8rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--primary);
    text-shadow: 0 0 15px var(--primary-glow);
    animation: fadeIn 1s ease-out forwards;
}

/* --- Header & Navigation --- */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
    background: rgba(13, 14, 27, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s ease;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    text-shadow: 0 0 10px var(--primary-glow);
}
    
.nav-links a {
    font-family: 'Roboto', sans-serif;
    color: var(--text-primary);
    text-decoration: none;
    margin-left: 30px;
    font-weight: 400;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary);
}

.cta-button {
    font-family: 'Orbitron', sans-serif;
    padding: 10px 25px;
    border: 1px solid var(--primary);
    border-radius: 8px;
    color: var(--primary);
    text-decoration: none;
    background-color: transparent;
    transition: all 0.3s ease;
    font-weight: 700;
}

.cta-button:hover {
    background-color: var(--primary);
    color: var(--bg-deep-space);
    box-shadow: 0 0 20px var(--primary-glow);
}

/* --- Hero Section --- */
.hero {
    padding-top: 180px;
    padding-bottom: 180px;
    text-align: center;
    background: linear-gradient(180deg, rgba(13,14,27,0) 0%, var(--bg-deep-space) 100%),
                radial-gradient(ellipse at 50% -20%, rgba(0, 191, 255, 0.2), transparent 70%);
}

.hero h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 4.5rem;
    font-weight: 900;
    margin: 0 0 20px;
    color: #fff;
    letter-spacing: 1px;
    animation: fadeIn 0.8s ease-out forwards;
}

.hero .subtitle {
    font-size: 1.3rem;
    color: var(--secondary);
    margin-bottom: 40px;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeIn 1s ease-out 0.2s forwards;
    opacity: 0;
}

.hero .hero-cta {
    font-size: 1.1rem;
    padding: 15px 40px;
    animation: fadeIn 1s ease-out 0.4s forwards;
    opacity: 0;
}

/* --- Features Section --- */
.features {
    background-color: var(--bg-nebula);
}

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

.feature-card {
    background: var(--surface);
    padding: 35px;
    border-radius: 16px;
    border: 1px solid transparent;
    display: flex;
    align-items: flex-start;
    gap: 25px;
    transition: all 0.3s ease;
}
    
.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-top: 5px;
}

.feature-card h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.4rem;
    margin: 0 0 10px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--secondary);
    margin: 0;
    line-height: 1.6;
}
    
/* --- FAQ Section --- */
.faq {
    max-width: 800px;
    margin: auto;
}
    
.faq-item {
    background: var(--surface);
    border-radius: 12px;
    margin-bottom: 15px;
    border: 1px solid var(--border);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
}
    
.faq-question i {
    transition: transform 0.3s ease;
}

.faq-answer {
    padding: 0 25px 20px;
    color: var(--secondary);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}
    
.faq-item.active .faq-answer {
    max-height: 200px;
}

/* --- Footer --- */
.main-footer {
    background-color: var(--bg-nebula);
    padding: 50px 20px;
    text-align: center;
    border-top: 1px solid var(--border);
}
    
.main-footer .logo {
    font-size: 1.5rem;
    margin-bottom: 15px;
    display: inline-block;
}

.main-footer p {
    margin: 5px 0;
    color: var(--secondary);
}

/* --- Mobile Responsive --- */
@media (max-width: 768px) {
    .nav-links a:not(.cta-button) {
        display: none;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    .hero .subtitle {
        font-size: 1.1rem;
    }
    .section-title {
        font-size: 2.2rem;
    }
}