:root {
    --primary: #111827;
    --accent: #3b82f6;
    --bg: #f9fafb;
    --white: #fff;
}

body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    padding: 2.5rem 1rem 1rem 1rem;
    background: var(--white);
    box-shadow: 0 2px 6px rgba(0,0,0,0.03);
}

.logo {
    width: 70px;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    margin: 0;
    letter-spacing: 1px;
}

.subtitle {
    color: var(--accent);
    font-size: 1.2rem;
    margin-top: 0.5rem;
}

main {
    flex: 1;
    max-width: 700px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.intro {
    text-align: center;
    margin-bottom: 2rem;
}

.features {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
}

.feature {
    background: var(--white);
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(59,130,246,0.07);
    padding: 1.5rem 1.2rem;
    flex: 1 1 180px;
    max-width: 220px;
    text-align: center;
    transition: transform 0.2s;
}

.feature:hover {
    transform: translateY(-4px) scale(1.03);
}

.icon {
    width: 40px;
    height: 40px;
    margin: 0 auto 1rem auto;
    /* Simple 3D block effect using CSS */
    background: linear-gradient(135deg, var(--accent) 70%, #60a5fa 100%);
    box-shadow: 3px 3px 0 #2563eb, 0 0 0 2px #fff inset;
    border-radius: 6px;
    position: relative;
    animation: bounce 1.2s infinite alternate;
}

#block2 { animation-delay: 0.2s; }
#block3 { animation-delay: 0.4s; }

@keyframes bounce {
    to { transform: translateY(-8px) scale(1.07); }
}

footer {
    text-align: center;
    padding: 1.2rem 0;
    background: var(--white);
    color: #64748b;
    font-size: 1rem;
    border-top: 1px solid #e5e7eb;
}

@media (max-width: 600px) {
    .features {
        flex-direction: column;
        gap: 1rem;
    }
}

/* Custom animation for the feature blocks */
@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* Apply animation to feature blocks */
.bg-gray-900 {
    animation: float 3s ease-in-out infinite;
}

/* Custom hover effects */
.hover\:shadow-md:hover {
    transform: translateY(-2px);
    transition: all 0.3s ease;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}