:root {
    --bg-color: #050505; 
    --text-primary: #ffffff;
    --accent-cyan: #00ffcc; 
    --accent-pink: #ff00ff; 
    --glass-bg: rgba(255, 255, 255, 0.04);
    --border-thin: 1px solid rgba(255, 255, 255, 0.15);
    --onion-glow: 0 0 20px rgba(0, 255, 204, 0.3);
}

body.kids-hub {
    background-color: var(--bg-color);
    background-image: 
        linear-gradient(rgba(0, 255, 204, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 204, 0.03) 1px, transparent 1px);
    background-size: 40px 40px; 
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, sans-serif;
    margin: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

.system-bar {
    position: fixed; top: 0; left: 0; right: 0;
    text-align: center;
    font-size: clamp(1rem, 1.5vw, 0.7rem);
    opacity: 0.82; padding: 4px;
    padding-bottom: env(safe-area-inset-bottom, 0px);
    pointer-events: none; z-index: 5;
}
.system-bar a { color: white; pointer-events: auto; }

/* Hero Section Optimizations */
.hero {
    padding: 2rem 1rem 2rem;
    text-align: center;
}

.logo-text {
    font-size: clamp(4rem, 15vw, 8rem);
    font-weight: 900;
    margin-bottom: 0;
    background: linear-gradient(to bottom, #fff 60%, var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(4px 4px 0px var(--accent-pink));
}

.tagline {
    font-family: monospace;
    color: var(--accent-cyan);
    letter-spacing: 1px;
    margin-top: 0.5rem;
}

/* Responsive Grid */
.container {
    padding: 0 1.5rem 4rem;
    max-width: 1100px;
    margin: 0 auto;
}

.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* Card Styling */
.game-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: var(--border-thin);
    border-radius: 12px; /* Slightly softer for kid-friendly feel */
    padding: 2rem;
    text-align: center;
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.game-card .icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 10px rgba(255,255,255,0.2));
}

.game-card h2 {
    margin: 0.5rem 0;
    font-size: 1.5rem;
    color: var(--accent-cyan);
}

.game-card p {
    font-size: 0.95rem;
    opacity: 0.8;
    line-height: 1.4;
    margin-bottom: 1.5rem;
    min-height: 3em; /* Vertical alignment */
}

/* Interactive Play Button */
.play-btn {
    width: 100%;
    max-width: 200px;
    padding: 1rem;
    background: transparent;
    border: 2px solid var(--accent-cyan);
    color: var(--accent-cyan);
    text-decoration: none;
    text-transform: uppercase;
    font-weight: bold;
    letter-spacing: 1px;
    border-radius: 8px;
    transition: all 0.2s;
}

footer {
    position: fixed; bottom: 0; left: 0; right: 0;
    text-align: center;
    font-size: clamp(0.5rem, 1.5vw, 0.7rem);
    opacity: 0.42; padding: 4px;
    padding-bottom: env(safe-area-inset-bottom, 0px);
    pointer-events: none; z-index: 5;
}
footer a { color: white; pointer-events: auto; }

@media (hover: hover) {
    .game-card:hover {
        transform: scale(1.03);
        border-color: var(--accent-cyan);
        box-shadow: var(--onion-glow);
    }
}

.game-card:active {
    transform: scale(0.98);
}

.play-btn:active, .play-btn:hover {
    background: var(--accent-cyan);
    color: #000;
    box-shadow: 0 0 25px var(--accent-cyan);
}

@media (max-width: 480px) {
    .hero { padding: 2rem 1rem; }
    .logo-text { font-size: 5rem; }
    .game-grid { grid-template-columns: 1fr; }
}

.not-found-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding-bottom: 10vh;
}

.glitch-icon {
    font-size: 6rem;
    margin-bottom: -1rem;
    filter: drop-shadow(0 0 15px var(--accent-pink));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.error-code {
    font-family: monospace;
    color: var(--accent-pink);
    font-size: 1.2rem;
    margin-bottom: 2rem;
}