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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    background: #111;
    color: #e0e0e0;
}

/* Navigation */
.navbar {
    background: rgba(15, 15, 15, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: 0.8rem 0;
    transition: background 0.3s;
}

.navbar .nav-link {
    color: #ccc !important;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    padding: 0.5rem 1rem !important;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
}

.navbar .nav-link:hover {
    color: #fff !important;
    background: rgba(255, 255, 255, 0.06);
}

.navbar .btn-light {
    background: #4d355e;
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    padding: 0.45rem 1.2rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.navbar .btn-light:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(77, 53, 94, 0.4);
}

/* Hero Section */
.hero-section {
    min-height: auto;
    display: flex;
    align-items: center;
    background: linear-gradient(160deg, #0a0a0a 0%, #0f0f1a 50%, #0a1020 100%);
    color: white;
    padding-top: 100px;
    padding-bottom: 40px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(77, 53, 94, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-section h1 {
    font-size: 2.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.hero-section .lead {
    color: #a0a0b0;
    font-size: 1.15rem;
    font-weight: 400;
}

.hero-section .btn-lg {
    border-radius: 10px;
    padding: 0.75rem 2rem;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.hero-section .btn-lg:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(77, 53, 94, 0.4);
}

.hero-section video {
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Sections */
.section {
    padding: 60px 0;
    background: #111;
    color: white;
}

.section h2 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 3rem;
}

.section h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.section p {
    color: #a0a0a0;
    font-size: 0.95rem;
    line-height: 1.8;
}

.section img {
    transition: transform 0.4s, box-shadow 0.4s;
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.section img:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(102, 126, 234, 0.15);
}

.section .row.g-4 {
    margin-bottom: 4rem;
}

/* Slide Animations */
.slide-left {
    opacity: 0;
    transform: translateX(-60px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.slide-right {
    opacity: 0;
    transform: translateX(60px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.slide-left.visible,
.slide-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Feature Icon */
.feature-icon {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 14px;
    background: rgba(102, 126, 234, 0.1);
    transition: background 0.3s, transform 0.3s;
}

.feature-icon:hover {
    background: rgba(102, 126, 234, 0.2);
    transform: scale(1.05);
}

/* Feature Cards */
.feature-card {
    text-align: center;
    padding: 2.5rem;
    background: rgba(255, 255, 255, 0.03);
    color: white;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s, border-color 0.3s;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: rgba(102, 126, 234, 0.3);
}

/* Content Box */
.content-box {
    background: rgba(255, 255, 255, 0.03);
    color: white;
    padding: 3rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    border-left: 4px solid #667eea;
}

.content-box h4 {
    color: #667eea;
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    font-size: 1.2rem;
}

.content-box h4:first-child {
    margin-top: 0;
}

.content-box p {
    color: #b0b0b0;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.content-box strong {
    color: white;
}

.content-box a {
    color: #667eea;
    text-decoration: none;
    border-bottom: 1px solid rgba(102, 126, 234, 0.3);
    transition: border-color 0.2s;
}

.content-box a:hover {
    border-color: #667eea;
}

/* Footer */
.footer {
    background: #0a0a0a;
    color: white;
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer h5 {
    color: white;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer a {
    color: #999 !important;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.footer a:hover {
    color: #667eea !important;
}

.footer .text-muted {
    color: #666 !important;
    font-size: 0.9rem;
}

.footer hr {
    border-color: rgba(255, 255, 255, 0.06);
    margin: 2rem 0;
}

/* Mobile: Windows-only notice */
.mobile-notice {
    display: none;
    background: rgba(255, 255, 255, 0.05);
    color: #a0a0a0;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

@media (max-width: 768px) {
    .download-btn {
        display: none !important;
    }

    .mobile-notice {
        display: inline-block;
    }

    .hero-section {
        min-height: auto;
        padding-top: 80px;
        padding-bottom: 20px;
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .hero-section h1 {
        font-size: 2rem;
    }

    .hero-section .text-start {
        margin-bottom: 2rem;
    }

    .section {
        padding: 20px 1rem;
    }

    .section h2 {
        font-size: 1.6rem;
        margin-bottom: 2rem;
    }

    .section img {
        height: 250px;
        margin-bottom: 1.5rem;
    }

    .feature-icon {
        width: 50px;
        height: 50px;
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .hero-section h1 {
        font-size: 1.7rem;
    }

    .section img {
        height: 200px;
    }
}