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

:root {
    --primary: #00ff00;
    --secondary: #ff00ff;
    --tertiary: #00ffff;
    --dark: #0a0e27;
    --darker: #050812;
    --gray: #1a1f3a;
    --text: #e0e6ff;
    --accent: #ff0080;
}

body {
    background: linear-gradient(135deg, var(--darker) 0%, #0f0a1e 50%, var(--darker) 100%);
    color: var(--text);
    font-family: 'Courier New', monospace;
    overflow-x: hidden;
    line-height: 1.6;
}

/* Background Effects */
.background-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(90deg, rgba(0, 255, 0, 0.03) 1px, transparent 1px),
        linear-gradient(rgba(0, 255, 0, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 1;
}

.background-glow {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 0, 128, 0.1) 0%, transparent 70%);
    animation: glow 15s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes glow {
    0%, 100% { transform: translate(-10%, -10%); }
    50% { transform: translate(10%, 10%); }
}

/* Header */
.header {
    position: relative;
    z-index: 10;
    padding: 60px 20px 40px;
    text-align: center;
    border-bottom: 2px solid var(--primary);
    background: linear-gradient(180deg, rgba(10, 14, 39, 0.8), rgba(10, 14, 39, 0.4));
    box-shadow: 0 0 30px rgba(0, 255, 0, 0.2), inset 0 0 20px rgba(0, 255, 0, 0.05);
}

.header-content {
    position: relative;
}

.title {
    font-size: 3.5rem;
    font-weight: bold;
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary), 0 0 20px var(--secondary);
    letter-spacing: 3px;
    margin-bottom: 10px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { text-shadow: 0 0 10px var(--primary), 0 0 20px var(--secondary); }
    50% { text-shadow: 0 0 20px var(--primary), 0 0 40px var(--secondary), 0 0 60px var(--tertiary); }
}

.subtitle {
    font-size: 1rem;
    color: var(--tertiary);
    letter-spacing: 2px;
    text-shadow: 0 0 10px var(--tertiary);
}

.header-line {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), var(--tertiary), transparent);
    margin-top: 20px;
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
}

/* Navigation */
.navbar {
    position: relative;
    z-index: 10;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    padding: 30px 20px;
    background: rgba(10, 14, 39, 0.6);
    border-bottom: 1px solid rgba(0, 255, 0, 0.3);
}

.nav-btn {
    padding: 10px 25px;
    background: rgba(10, 14, 39, 0.8);
    color: var(--text);
    border: 2px solid var(--gray);
    cursor: pointer;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-btn:hover,
.nav-btn.active {
    border-color: var(--primary);
    color: var(--dark);
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.5), inset 0 0 10px rgba(0, 255, 0, 0.2);
}

.nav-btn.active::before {
    opacity: 1;
}

/* Main Container */
.container {
    position: relative;
    z-index: 5;
    max-width: 1400px;
    margin: 0 auto;
    padding: 60px 20px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

/* Cards */
.card {
    position: relative;
    background: linear-gradient(135deg, rgba(26, 31, 58, 0.9), rgba(15, 10, 30, 0.9));
    border: 2px solid var(--primary);
    padding: 30px;
    cursor: pointer;
    transition: all 0.4s ease;
    overflow: hidden;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.1);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 0, 0.2), transparent);
    transition: left 0.5s ease;
    z-index: 1;
}

.card:hover {
    border-color: var(--secondary);
    box-shadow: 0 0 30px rgba(255, 0, 128, 0.5), inset 0 0 20px rgba(255, 0, 128, 0.1);
    transform: translateY(-10px);
}

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

.card-header {
    position: relative;
    z-index: 2;
    margin-bottom: 20px;
}

.card-tag {
    display: inline-block;
    background: rgba(0, 255, 0, 0.1);
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 5px 12px;
    font-size: 0.75rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 15px;
    text-shadow: 0 0 5px var(--primary);
}

.card-title {
    font-size: 1.8rem;
    color: var(--secondary);
    text-shadow: 0 0 10px var(--secondary);
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.card-content {
    position: relative;
    z-index: 2;
    flex-grow: 1;
    margin-bottom: 20px;
}

.card-content p {
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.8;
    text-align: justify;
}

.card-footer {
    position: relative;
    z-index: 2;
    border-top: 1px solid rgba(0, 255, 0, 0.3);
    padding-top: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-status {
    color: var(--tertiary);
    font-size: 0.85rem;
    text-shadow: 0 0 5px var(--tertiary);
}

.card-icon {
    font-size: 1.5rem;
    opacity: 0.6;
    transition: all 0.3s ease;
}

.card:hover .card-icon {
    opacity: 1;
    transform: rotate(45deg);
}

/* Footer */
.footer {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 30px 20px;
    border-top: 2px solid var(--primary);
    background: rgba(10, 14, 39, 0.9);
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.2), inset 0 0 15px rgba(0, 255, 0, 0.05);
    color: var(--primary);
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.footer-glitch {
    margin-top: 10px;
    color: var(--secondary);
    animation: glitch 0.3s infinite;
}

@keyframes glitch {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Responsive */
@media (max-width: 768px) {
    .title {
        font-size: 2.5rem;
    }

    .cards-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .navbar {
        gap: 10px;
    }

    .nav-btn {
        padding: 8px 15px;
        font-size: 0.8rem;
    }
}

/* Animation for card appearance */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: slideIn 0.6s ease-out forwards;
}

.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.2s; }
.card:nth-child(4) { animation-delay: 0.3s; }