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

body {
    font-family: 'JetBrains Mono', monospace;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a0033 50%, #0a0a0a 100%);
    color: #fff;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(168, 85, 247, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.mhne-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    padding: 2rem;
    animation: fadeIn 0.8s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.back-btn {
    position: fixed;
    top: 2rem;
    left: 2rem;
    background: rgba(139, 92, 246, 0.2);
    border: 2px solid #8B5CF6;
    color: #fff;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-family: 'Orbitron', monospace;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    z-index: 100;
}

.back-btn:hover {
    background: rgba(139, 92, 246, 0.4);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.6);
    transform: translateX(-5px);
}

.vault-content {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 4rem;
}

.vault-header {
    text-align: center;
    margin-bottom: 4rem;
    animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.vault-title {
    font-family: 'Orbitron', monospace;
    font-size: 4rem;
    font-weight: 900;
    background: linear-gradient(135deg, #8B5CF6, #A855F7, #C084FC);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px rgba(139, 92, 246, 0.5);
    margin-bottom: 1rem;
}

.vault-subtitle {
    font-size: 1.2rem;
    color: #A855F7;
    font-weight: 300;
    letter-spacing: 2px;
}

.hidden-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.secret-card {
    background: rgba(139, 92, 246, 0.05);
    border: 2px solid rgba(139, 92, 246, 0.3);
    border-radius: 15px;
    padding: 2rem;
    cursor: pointer;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    animation: cardAppear 0.6s ease-out backwards;
}

.secret-card:nth-child(1) { animation-delay: 0.1s; }
.secret-card:nth-child(2) { animation-delay: 0.2s; }
.secret-card:nth-child(3) { animation-delay: 0.3s; }
.secret-card:nth-child(4) { animation-delay: 0.4s; }
.secret-card:nth-child(5) { animation-delay: 0.5s; }
.secret-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes cardAppear {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.secret-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.2), transparent);
    transition: left 0.5s ease;
}

.secret-card:hover::before {
    left: 100%;
}

.secret-card:hover {
    transform: translateY(-10px);
    border-color: #8B5CF6;
    box-shadow: 0 10px 40px rgba(139, 92, 246, 0.4);
    background: rgba(139, 92, 246, 0.1);
}

.card-icon {
    font-size: 3rem;
    color: #8B5CF6;
    margin-bottom: 1rem;
}

.secret-card h3 {
    font-family: 'Orbitron', monospace;
    font-size: 1.5rem;
    color: #fff;
    margin-bottom: 1rem;
}

.secret-card p {
    color: #aaa;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.status-badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.status-badge.classified {
    background: rgba(239, 68, 68, 0.2);
    color: #EF4444;
    border: 1px solid #EF4444;
}

.status-badge.restricted {
    background: rgba(251, 191, 36, 0.2);
    color: #FBBF24;
    border: 1px solid #FBBF24;
}

.status-badge.top-secret {
    background: rgba(139, 92, 246, 0.2);
    color: #8B5CF6;
    border: 1px solid #8B5CF6;
}

.vault-footer {
    text-align: center;
    padding: 2rem;
    border-top: 2px solid rgba(139, 92, 246, 0.3);
    color: #888;
}

.vault-footer p {
    margin: 0.5rem 0;
}

.timestamp {
    color: #8B5CF6;
    font-family: 'Orbitron', monospace;
}

@media (max-width: 768px) {
    .vault-title {
        font-size: 2.5rem;
    }
    
    .hidden-content {
        grid-template-columns: 1fr;
    }
    
    .back-btn {
        top: 1rem;
        left: 1rem;
        padding: 10px 20px;
        font-size: 0.8rem;
    }
}