@keyframes gradientBG {
    0% {background-position: 0% 50%;}
    50% {background-position: 100% 50%;}
    100% {background-position: 0% 50%;}
}

@keyframes float {
    0% {transform: translatey(0px);}
    50% {transform: translatey(-20px);}
    100% {transform: translatey(0px);}
}

@keyframes rotate {
    100% {transform: rotate(360deg);}
}

body {
    font-family: 'Ubuntu', sans-serif;
    background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
}

.login-container {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 300px;
    width: 100%;
    animation: float 6s ease-in-out infinite;
    position: relative;
}

.login-container::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    background: linear-gradient(45deg, #ff0000, #ff7300, #fffb00, #48ff00, #00ffd5, #002bff, #7a00ff, #ff00c8, #ff0000);
    z-index: -1;
    filter: blur(20px);
    background-size: 400%;
    animation: rotate 20s linear infinite;
    border-radius: 15px;
}

h1 {
    color: #4a4a4a;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

input[type="password"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
    transition: all 0.3s ease;
    font-family: 'Ubuntu', sans-serif;
}

input[type="password"]:focus {
    border-color: #4CAF50;
    box-shadow: 0 0 8px rgba(76, 175, 80, 0.6);
}

input[type="submit"] {
    width: 100%;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
    font-family: 'Ubuntu', sans-serif;
    font-weight: 700;
}

input[type="submit"]:hover {
    background-color: #45a049;
    transform: scale(1.05);
}

.error-message {
    color: #000000;
    margin-bottom: 1rem;
    animation: shake 0.82s cubic-bezier(.36,.07,.19,.97) both;
    font-weight: 300;
}

@keyframes shake {
    10%, 90% {transform: translate3d(-1px, 0, 0);}
    20%, 80% {transform: translate3d(2px, 0, 0);}
    30%, 50%, 70% {transform: translate3d(-4px, 0, 0);}
    40%, 60% {transform: translate3d(4px, 0, 0);}
}