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

body {
    font-family: 'Courier New', monospace;
    background: #000;
    color: #00ff00;
    overflow: hidden;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

#matrix-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: #000;
}

.login-container {
    text-align: center;
    z-index: 10;
    background: rgba(0, 0, 0, 0.8);
    padding: 50px;
    border-radius: 10px;
    border: 2px solid #00ff00;
    box-shadow: 0 0 30px #00ff00;
    backdrop-filter: blur(5px);
}

.login-title {
    font-size: 2.5rem;
    margin-bottom: 40px;
    text-shadow: 0 0 20px #00ff00;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        text-shadow: 0 0 10px #00ff00, 0 0 20px #00ff00, 0 0 30px #00ff00;
    }
    to {
        text-shadow: 0 0 15px #00ff00, 0 0 25px #00ff00, 0 0 35px #00ff00;
    }
}

.input-container {
    display: flex;
    gap: 15px;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
}

#password-input {
    background: rgba(0, 255, 0, 0.1);
    border: 2px solid #00ff00;
    color: #00ff00;
    padding: 15px 20px;
    font-size: 1.2rem;
    font-family: 'Courier New', monospace;
    border-radius: 5px;
    width: 250px;
    text-align: center;
    letter-spacing: 3px;
    outline: none;
    transition: all 0.3s ease;
}

#password-input:focus {
    box-shadow: 0 0 20px #00ff00;
    background: rgba(0, 255, 0, 0.2);
}

#password-input::placeholder {
    color: rgba(0, 255, 0, 0.6);
}

#enter-btn {
    background: linear-gradient(45deg, #00ff00, #00cc00);
    border: none;
    color: #000;
    padding: 15px 30px;
    font-size: 1.2rem;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Courier New', monospace;
}

#enter-btn:hover {
    background: linear-gradient(45deg, #00cc00, #009900);
    box-shadow: 0 0 20px #00ff00;
    transform: translateY(-2px);
}

#enter-btn:active {
    transform: translateY(0);
}

.error-message {
    color: #ff0000;
    font-size: 1rem;
    height: 20px;
    text-shadow: 0 0 10px #ff0000;
}

.matrix-char {
    position: absolute;
    color: #00ff00;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    animation: fall linear infinite;
    opacity: 0.8;
    text-shadow: 0 0 5px #00ff00;
}

@keyframes fall {
    0% {
        transform: translateY(-100vh);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh);
        opacity: 0;
    }
}

.matrix-char:nth-child(odd) {
    color: #00ccff;
    text-shadow: 0 0 5px #00ccff;
}

.matrix-char:nth-child(even) {
    color: #00ff00;
    text-shadow: 0 0 5px #00ff00;
}