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

body {
    font-family: 'Courier New', monospace;
    background: #0a0a0a;
    color: #00ff00;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    overflow-x: hidden;
}

/* Scanline effect */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 255, 0, 0.03) 0px,
        rgba(0, 255, 0, 0.03) 1px,
        transparent 1px,
        transparent 2px
    );
    pointer-events: none;
    z-index: 1000;
}

/* Vignette effect */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
    pointer-events: none;
    z-index: 999;
}

.terminal-container {
    width: 100%;
    max-width: 1200px;
    background: rgba(0, 20, 0, 0.9);
    border: 2px solid #00ff00;
    border-radius: 5px;
    box-shadow: 
        0 0 20px rgba(0, 255, 0, 0.3),
        inset 0 0 50px rgba(0, 255, 0, 0.05);
    position: relative;
    animation: flicker 0.15s infinite;
}

@keyframes flicker {
    0% { opacity: 0.98; }
    50% { opacity: 1; }
    100% { opacity: 0.98; }
}

.terminal-header {
    background: rgba(0, 50, 0, 0.5);
    padding: 15px 20px;
    border-bottom: 1px solid #00ff00;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.terminal-title {
    font-size: 18px;
    font-weight: bold;
    text-shadow: 0 0 10px #00ff00;
    letter-spacing: 2px;
}

.status {
    font-size: 12px;
    color: #00cc00;
    text-shadow: 0 0 5px #00ff00;
}

.content {
    padding: 30px 20px;
}

.alphabet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    max-width: 1000px;
    margin: 0 auto;
}

.alphabet-item {
    background: rgba(0, 30, 0, 0.6);
    border: 1px solid #00ff00;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    cursor: default;
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.1);
}

.alphabet-item:hover {
    background: rgba(0, 50, 0, 0.8);
    box-shadow: 
        0 0 20px rgba(0, 255, 0, 0.4),
        inset 0 0 20px rgba(0, 255, 0, 0.1);
    transform: translateY(-2px);
}

.letter {
    font-size: 42px;
    font-weight: bold;
    color: #00ff00;
    text-shadow: 
        0 0 10px #00ff00,
        0 0 20px #00ff00,
        0 0 30px #00ff00;
    font-family: 'Courier New', monospace;
}

.code {
    font-size: 16px;
    color: #00cc00;
    letter-spacing: 3px;
    text-shadow: 0 0 5px #00ff00;
}

.terminal-footer {
    background: rgba(0, 50, 0, 0.5);
    padding: 15px 20px;
    border-top: 1px solid #00ff00;
    text-align: right;
}

.blink {
    animation: blink 1s infinite;
    color: #00ff00;
    text-shadow: 0 0 10px #00ff00;
}

@keyframes blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0; }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .terminal-title {
        font-size: 14px;
    }
    
    .alphabet-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 10px;
    }
    
    .letter {
        font-size: 32px;
    }
    
    .code {
        font-size: 14px;
        letter-spacing: 2px;
    }
}

@media (max-width: 480px) {
    .alphabet-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
    
    .terminal-title {
        font-size: 12px;
        letter-spacing: 1px;
    }
    
    .status {
        font-size: 10px;
    }
}