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

body.login-bg {
    font-family: 'Segoe UI', sans-serif;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(-45deg, #ff4e8a, #6a11cb, #ff6ec4, #7873f5);
    background-size: 400% 400%;
    animation: gradientBG 10s ease infinite;
}

/* Animated Gradient */
@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Login Card */
.login-box {
    width: 90%;
    max-width: 380px;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    color: #fff;

    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);

    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    animation: fadeIn 0.5s ease;
}

.login-box h2 {
    margin-bottom: 5px;
}

.subtitle {
    font-size: 14px;
    margin-bottom: 25px;
    opacity: 0.8;
}

/* Floating Input */
.input-group {
    position: relative;
    margin-bottom: 25px;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 10px;
    outline: none;
    background: rgba(255,255,255,0.15);
    color: #fff;
    font-size: 14px;
}

.input-group label {
    position: absolute;
    left: 12px;
    top: 12px;
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    pointer-events: none;
    transition: 0.3s;
}

/* Floating effect */
.input-group input:focus + label,
.input-group input:valid + label {
    top: -10px;
    left: 10px;
    font-size: 12px;
    background: #6a11cb;
    padding: 2px 6px;
    border-radius: 5px;
}

/* Button */
.login-btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, #ff4e8a, #6a11cb);
    color: #fff;
    font-weight: 500;
    cursor: pointer;
    transition: 0.3s;
}

.login-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

/* Error */
.error-msg {
    background: rgba(255,0,0,0.2);
    padding: 8px;
    margin-bottom: 15px;
    border-radius: 8px;
    font-size: 13px;
}

/* Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 480px) {
    .login-box {
        padding: 30px 20px;
    }
}