body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0b0b0d;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    background: #15151b;
    padding: 40px;
    border-radius: 16px;
    width: 350px;
    text-align: center;
    box-shadow: 0 0 25px rgba(0, 255, 153, 0.2);
    border: 1px solid #1f1f25;
    opacity: 0;
    animation: fadeIn 0.8s forwards ease-out;
}

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

.logoText {
    font-size: 40px;
    font-weight: bold;
    margin-bottom: 10px;
    background: linear-gradient(90deg, #00ff9d, #00ffa3, #00ff9d);
    -webkit-background-clip: text;
    color: transparent;
    text-shadow: 0 0 10px #00ff9d, 0 0 20px #00ff9d;
    letter-spacing: 2px;
}

h2 {
    margin-bottom: 20px;
    font-size: 22px;
    color: #00ff9d;
    text-shadow: 0 0 10px #00ff9d;
}

input {
    width: 90%;
    padding: 12px;
    border-radius: 10px;
    border: none;
    margin-top: 10px;
    background: #0f0f13;
    color: white;
    font-size: 16px;
    outline: none;
}

button {
    width: 95%;
    padding: 12px;
    background: #00ff9d;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    margin-top: 15px;
    cursor: pointer;
    font-weight: bold;
    color: #000;
    transition: 0.2s;
}

button:hover {
    background: #00d987;
}

#error {
    margin-top: 15px;
    color: #ff4c4c;
    display: none;
    font-size: 14px;
}

.shake {
    animation: shake 0.3s;
}

@keyframes shake {
    0% { transform: translateX(0px); }
    25% { transform: translateX(-5px); }
    50% { transform: translateX(5px); }
    75% { transform: translateX(-5px); }
    100% { transform: translateX(0px); }
}