* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}
body {
    background: linear-gradient(to right, #141e30, #243b55);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
.container {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    text-align: center;
    width: 350px;
    position: relative;
    z-index: 2;
}
h2 {
    color: #fff;
    margin-bottom: 1rem;
}
.input-group {
    margin-bottom: 1rem;
}
.input-group label {
    display: block;
    color: #fff;
    font-size: 14px;
    margin-bottom: 5px;
}
.input-group input {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 5px;
    outline: none;
}
.btn {
    display: inline-block;
    background: #00c6ff;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
    font-size: 16px;
    text-decoration: none;
    text-align: center;
    font-weight: bold;
    position: relative;
    z-index: 10;
    margin-top: 15px;
}

.btn:hover {
    background: #0072ff;
    transform: scale(1.05);
}

.btn:active {
    transform: scale(0.95);
}

.register-link, .login-link {
    margin-top: 1rem;
    color: white;
}
.register-link a, .login-link a {
    color: #00c6ff;
    text-decoration: none;
}
.register-link a:hover, .login-link a:hover {
    text-decoration: underline;
}
.error-message {
    color: #ff4d4d;
    background: rgba(255, 0, 0, 0.1);
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    margin-bottom: 10px;
    font-weight: bold;
}
.success-message {
    color: #4CAF50;
    background: rgba(76, 175, 80, 0.1);
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    font-weight: bold;
    margin-bottom: 10px;
}