body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", Tahoma, sans-serif;
    background: linear-gradient(135deg, #4a4d51, #5f6565, #6c7072);
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
}

/* Container */
.auth-container {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    justify-content: center;
}

/* Glass box */
.auth-box {
    width: 300px;
    padding: 30px;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(18px);
    border-radius: 20px;
    box-shadow: 0 10px 35px rgba(0,0,0,0.3);
}

/* Titles */
.auth-box h2 {
    text-align: center;
    margin-bottom: 20px;
    font-weight: 500;
}

/* Inputs */
.auth-box label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.auth-box input,
.auth-box select {
    width: 100%;
    padding: 10px;
    margin: 6px 0 14px;
    border-radius: 10px;
    border: none;
    outline: none;
    background: rgba(0,0,0,0.35);
    color: white;
}

/* Buttons */
.auth-box button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 30px;
    background: rgba(0,0,0,0.6);
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.auth-box button:hover {
    transform: translateY(-2px);
    background: rgba(0,0,0,0.8);
}