* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #1a237e, #4a148c);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.register-container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    width: 100%;
    max-width: 500px;
    padding: 2.5rem;
}

.logo {
    text-align: center;
    color: #ff4081;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    font-weight: bold;
}

.form-title {
    text-align: center;
    color: #333;
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #555;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border 0.3s;
}

.form-group input:focus {
    border-color: #1a237e;
    outline: none;
}

.submit-btn {
    background: linear-gradient(135deg, #1a237e, #4a148c);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 8px;
    font-size: 1.1rem;
    cursor: pointer;
    width: 100%;
    transition: transform 0.3s;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(26, 35, 126, 0.4);
}

.login-link {
    text-align: center;
    margin-top: 1.5rem;
    color: #666;
}

.login-link a {
    color: #1a237e;
    text-decoration: none;
    font-weight: 500;
}

.login-link a:hover {
    text-decoration: underline;
}

.error-message {
    background-color: #ffebee;
    color: #c62828;
    padding: 0.8rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    text-align: center;
    display: none;
}

/*ریسپانسیو */
@media (max-width: 576px) {
    .register-container {
        padding: 1.5rem;
    }
}