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

html,
body {
    min-height: 100vh;
    margin: 0;
    display: flex;
    flex-direction: column;
}

body {
    flex: 1;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.register-container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 600px;
    width: 100%;
    padding: 50px;
}

.full-screen-center {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0px;
}


.register-header {
    text-align: center;
    margin-bottom: 30px;
}

.register-header h1 {
    color: #333;
    font-size: 28px;
    margin-bottom: 8px;
}

.register-header p {
    color: #666;
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: #333;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e1e8ed;
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input.input-validation-error {
    border-color: #e74c3c;
}

.text-danger {
    color: #e74c3c;
    font-size: 12px;
    margin-top: 5px;
    display: block;
}

.validation-summary-errors {
    background: #fee;
    border: 1px solid #fcc;
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 20px;
}

.validation-summary-errors ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.validation-summary-errors li {
    color: #c33;
    font-size: 14px;
    margin-bottom: 5px;
}

.recaptcha-container {
    margin: 20px 0;
    display: flex;
    justify-content: center;
}

.btn-register {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.btn-register:active {
    transform: translateY(0);
}

.login-link {
    text-align: center;
    margin-top: 20px;
    color: #666;
    font-size: 14px;
}

.login-link a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

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

.password-hint {
    font-size: 12px;
    color: #999;
    margin-top: 5px;
}

.error-message {
    background: #fee;
    border: 1px solid #fcc;
    color: #c33;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    animation: shake 0.5s;
}

@media (max-width: 576px) {
    .full-screen-center {
        padding: 10px;
    }

    body {
        padding: 10px;
    }

    .register-container {
        padding: 30px 20px;
    }

    .register-header h1 {
        font-size: 24px;
    }

    .form-group {
        margin-bottom: 15px;
    }

    .form-group input {
        padding: 10px 15px;
        font-size: 13px;
    }

    .btn-register {
        padding: 12px;
        font-size: 15px;
    }
}