body {
    font-family: 'Roboto', Arial, sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background: radial-gradient(ellipse at top left, #23234f 60%, #181829 100%);
    color: #fff;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url('https://www.transparenttextures.com/patterns/stardust.png');
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
}

.navbar {
    background: transparent;
    box-shadow: none;
}

.container {
    max-width: 1100px;
   
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 2rem;
}

.logo {
    color: #fff;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-align: center;
    width: 100%;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background 0.2s, color 0.2s;
}

.nav-link.active, .nav-link:hover {
    background: #4a4e69;
    color: #ffb700;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 90vh;
    position: relative;
    z-index: 1;
}

.welcome-text {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #fff;
    margin-top: 3rem;
    margin-bottom: 2.5rem;
    letter-spacing: 1px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2.5rem;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

.feature-card {
    background: rgba(30, 32, 60, 0.95);
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.25);
    padding: 2rem 1.5rem 1.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 16px 48px 0 rgba(31, 38, 135, 0.35);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.2rem;
    border-radius: 16px;
    padding: 0.7rem;
    background: linear-gradient(135deg, #ffb700 40%, #ff5e62 100%);
    color: #fff;
    box-shadow: 0 0 16px 4px rgba(255, 186, 0, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-card:nth-child(2) .feature-icon {
    background: linear-gradient(135deg, #ff5e62 40%, #ffb700 100%);
    box-shadow: 0 0 16px 4px rgba(255, 94, 98, 0.25);
}

.feature-card:nth-child(3) .feature-icon {
    background: linear-gradient(135deg, #00c6fb 40%, #005bea 100%);
    box-shadow: 0 0 16px 4px rgba(0, 198, 251, 0.25);
}

.feature-card:nth-child(4) .feature-icon {
    background: linear-gradient(135deg, #a18cd1 40%, #fbc2eb 100%);
    box-shadow: 0 0 16px 4px rgba(161, 140, 209, 0.25);
}

.feature-card:nth-child(5) .feature-icon {
    background: linear-gradient(135deg, #43e97b 40%, #38f9d7 100%);
    box-shadow: 0 0 16px 4px rgba(67, 233, 123, 0.25);
}

.feature-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #fff;
    text-align: center;
}

.feature-desc {
    color: #c7c7d9;
    font-size: 1rem;
    text-align: center;
}

.central-options {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin: 3rem 0 2.5rem 0;
}

.option-btn {
    display: inline-block;
    padding: 1.2rem 2.5rem;
    background: #fff;
    color: #22223b;
    border: 2px solid #4a4e69;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 2px 12px rgba(34,34,59,0.07);
    transition: background 0.2s, color 0.2s, border 0.2s, box-shadow 0.2s;
    margin: 0.5rem 0;
}

.option-btn:hover, .option-btn:focus {
    background: #4a4e69;
    color: #ffb700;
    border-color: #ffb700;
    box-shadow: 0 4px 24px rgba(34,34,59,0.13);
}

h1 {
    color: #22223b;
    margin-top: 0;
}

p {
    color: #4a4e69;
    font-size: 1.1rem;
}

@media (max-width: 600px) {
    .container { flex-direction: column; padding: 1rem; }
    .nav-links { flex-direction: column; gap: 1rem; }
    .card { padding: 1rem; }
    .central-options {
        flex-direction: column;
        gap: 1rem;
    }
    .option-btn {
        width: 90%;
        font-size: 1rem;
        padding: 1rem 0;
    }
}

@media (max-width: 700px) {
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .welcome-text {
        font-size: 1.5rem;
    }
}