:root {
    --primary-color: #10b981;
    --secondary-color: #059669;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-dark: linear-gradient(135deg, #1e293b 0%, #334155 100%);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    overflow-x: hidden;
}

#navbar {
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

#navbar.scrolled {
    background: rgba(30, 41, 59, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: #fff !important;
}

.navbar-brand i {
    color: var(--primary-color);
}

.nav-link {
    color: #fff !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

.app-hero-section {
    background: var(--gradient-success);
    color: #fff;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.app-hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></svg>');
    background-size: 100px;
    animation: float 20s linear infinite;
}

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

.app-icon-large {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20rem;
    color: rgba(255, 255, 255, 0.15);
    /* animation: pulse 3s ease-in-out infinite; */
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.15; }
    50% { transform: scale(1.05); opacity: 0.2; }
}

.app-meta {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.app-meta .badge {
    font-weight: 500;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-success {
    background: #fff;
    color: var(--primary-color);
    border: none;
    padding: 0.75rem 2rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.3);
    color: var(--primary-color);
}

.btn-outline-light {
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    padding: 0.75rem 2rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline-light:hover {
    background: #fff;
    color: var(--primary-color);
    border-color: #fff;
}

.features-section {
    background: var(--light-color);
}

.feature-card {
    background: #fff;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient-success);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    color: #fff;
    margin: 0 auto 1.5rem;
}

.feature-card h4 {
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.gameplay-section {
    background: #fff;
}

.gameplay-image {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 12rem;
    color: rgba(16, 185, 129, 0.1);
}

.gameplay-steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-success);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.step-content h4 {
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.step-content p {
    color: #64748b;
    margin-bottom: 0;
}

.privacy-section {
    background: var(--light-color);
}

.privacy-card {
    background: #fff;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.privacy-card h2 {
    color: var(--primary-color);
}

.privacy-card h2 i {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.privacy-content h4 {
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.privacy-content h4 i {
    color: var(--primary-color);
}

.privacy-content p {
    margin-bottom: 1.5rem;
    color: #64748b;
}

.download-section {
    background: var(--gradient-dark);
    color: #fff;
}

.download-section h2,
.download-section p {
    color: #fff;
}

.download-section .btn-success {
    background: var(--gradient-success);
    color: #fff;
}

.download-section .btn-success:hover {
    color: #fff;
}

.footer {
    background: var(--dark-color);
    color: #fff;
}

.footer-link {
    color: #fff;
    text-decoration: none;
    margin-left: 1.5rem;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .app-hero-section {
        text-align: center;
    }
    
    .app-icon-large {
        font-size: 10rem;
        margin-bottom: 2rem;
    }
    
    .app-meta {
        justify-content: center;
    }
    
    .d-flex {
        justify-content: center;
    }
    
    .gameplay-image {
        font-size: 8rem;
        margin-top: 2rem;
    }
    
    .step {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .privacy-card {
        padding: 2rem 1.5rem;
    }
    
    .footer {
        text-align: center;
    }
    
    .footer-link {
        margin: 0 0.75rem;
    }
}